Add bitbake-dev to allow ease of testing and development of bitbake trunk

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@5337 311d38ba-8fff-0310-9ca6-ca027cbcb966

41 files changed, 12277 insertions, 0 deletions

diff --git a/bitbake-dev/lib/bb/COW.py b/bitbake-dev/lib/bb/COW.py
new file mode 100644
index 0000000000..e5063d60a8
--- /dev/null
+++ b/bitbake-dev/lib/bb/COW.py
@@ -0,0 +1,320 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# This is a copy on write dictionary and set which abuses classes to try and be nice and fast.
+#
+# Copyright (C) 2006 Tim Amsell 
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+#Please Note: 
+# Be careful when using mutable types (ie Dict and Lists) - operations involving these are SLOW.
+# Assign a file to __warn__ to get warnings about slow operations.
+#
+
+from inspect import getmro
+
+import copy
+import types, sets
+types.ImmutableTypes = tuple([ \
+    types.BooleanType, \
+    types.ComplexType, \
+    types.FloatType, \
+    types.IntType, \
+    types.LongType, \
+    types.NoneType, \
+    types.TupleType, \
+    sets.ImmutableSet] + \
+    list(types.StringTypes))
+
+MUTABLE = "__mutable__"
+
+class COWMeta(type):
+    pass
+ 
+class COWDictMeta(COWMeta):
+    __warn__ = False
+    __hasmutable__ = False
+    __marker__ = tuple()
+
+    def __str__(cls):
+        # FIXME: I have magic numbers!
+        return "<COWDict Level: %i Current Keys: %i>" % (cls.__count__, len(cls.__dict__) - 3)
+    __repr__ = __str__
+
+    def cow(cls):
+        class C(cls):
+            __count__ = cls.__count__ + 1
+        return C
+    copy = cow
+    __call__ = cow
+
+    def __setitem__(cls, key, value):
+        if not isinstance(value, types.ImmutableTypes):
+            if not isinstance(value, COWMeta):
+                cls.__hasmutable__ = True
+            key += MUTABLE
+        setattr(cls, key, value)
+    
+    def __getmutable__(cls, key, readonly=False):
+        nkey = key + MUTABLE
+        try:
+            return cls.__dict__[nkey]
+        except KeyError:
+            pass
+
+        value = getattr(cls, nkey)
+        if readonly:
+            return value
+
+        if not cls.__warn__ is False and not isinstance(value, COWMeta):
+            print >> cls.__warn__, "Warning: Doing a copy because %s is a mutable type." % key
+        try:
+            value = value.copy()
+        except AttributeError, e:
+            value = copy.copy(value)
+        setattr(cls, nkey, value)
+        return value
+
+    __getmarker__ = []
+    def __getreadonly__(cls, key, default=__getmarker__):
+        """\
+        Get a value (even if mutable) which you promise not to change.
+        """
+        return cls.__getitem__(key, default, True)
+
+    def __getitem__(cls, key, default=__getmarker__, readonly=False):
+        try:
+            try:
+                value = getattr(cls, key)
+            except AttributeError:
+                value = cls.__getmutable__(key, readonly)
+            
+            # This is for values which have been deleted 
+            if value is cls.__marker__:
+                raise AttributeError("key %s does not exist." % key)
+
+            return value
+        except AttributeError, e:
+            if not default is cls.__getmarker__:
+                return default
+
+            raise KeyError(str(e))
+
+    def __delitem__(cls, key):
+        cls.__setitem__(key, cls.__marker__)
+
+    def __revertitem__(cls, key):
+        if not cls.__dict__.has_key(key):
+            key += MUTABLE
+        delattr(cls, key)
+
+    def has_key(cls, key):
+        value = cls.__getreadonly__(key, cls.__marker__)
+        if value is cls.__marker__:
+            return False
+        return True
+
+    def iter(cls, type, readonly=False):
+        for key in dir(cls):
+            if key.startswith("__"):
+                    continue
+
+            if key.endswith(MUTABLE):
+                key = key[:-len(MUTABLE)]
+
+            if type == "keys":
+                yield key
+
+            try:
+                if readonly:
+                    value = cls.__getreadonly__(key)
+                else:
+                    value = cls[key]
+            except KeyError:
+                continue
+
+            if type == "values":
+                yield value
+            if type == "items":
+                yield (key, value)
+        raise StopIteration()
+
+    def iterkeys(cls):
+        return cls.iter("keys")
+    def itervalues(cls, readonly=False):
+        if not cls.__warn__ is False and cls.__hasmutable__ and readonly is False:
+            print >> cls.__warn__, "Warning: If you arn't going to change any of the values call with True."
+        return cls.iter("values", readonly)
+    def iteritems(cls, readonly=False):
+        if not cls.__warn__ is False and cls.__hasmutable__ and readonly is False:
+            print >> cls.__warn__, "Warning: If you arn't going to change any of the values call with True."
+        return cls.iter("items", readonly)
+
+class COWSetMeta(COWDictMeta):
+    def __str__(cls):
+        # FIXME: I have magic numbers!
+        return "<COWSet Level: %i Current Keys: %i>" % (cls.__count__, len(cls.__dict__) -3)
+    __repr__ = __str__
+
+    def cow(cls):
+        class C(cls):
+            __count__ = cls.__count__ + 1
+        return C
+
+    def add(cls, value):
+        COWDictMeta.__setitem__(cls, repr(hash(value)), value)
+
+    def remove(cls, value):
+        COWDictMeta.__delitem__(cls, repr(hash(value)))
+ 
+    def __in__(cls, value):
+        return COWDictMeta.has_key(repr(hash(value)))
+
+    def iterkeys(cls):
+        raise TypeError("sets don't have keys")
+    
+    def iteritems(cls):
+        raise TypeError("sets don't have 'items'")
+
+# These are the actual classes you use!
+class COWDictBase(object):
+    __metaclass__ = COWDictMeta
+    __count__ = 0
+
+class COWSetBase(object):
+    __metaclass__ = COWSetMeta
+    __count__ = 0
+
+if __name__ == "__main__":
+    import sys
+    COWDictBase.__warn__ = sys.stderr
+    a = COWDictBase()
+    print "a", a
+
+    a['a'] = 'a'
+    a['b'] = 'b'
+    a['dict'] = {}
+
+    b = a.copy()
+    print "b", b
+    b['c'] = 'b'
+
+    print
+
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems():
+        print x
+    print
+
+    b['dict']['a'] = 'b'
+    b['a'] = 'c'
+
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems():
+        print x
+    print
+
+    try:
+        b['dict2']
+    except KeyError, e:
+        print "Okay!"
+
+    a['set'] = COWSetBase()
+    a['set'].add("o1")
+    a['set'].add("o1")
+    a['set'].add("o2")
+
+    print "a", a
+    for x in a['set'].itervalues():
+        print x
+    print "--"
+    print "b", b
+    for x in b['set'].itervalues():
+        print x
+    print
+
+    b['set'].add('o3')
+
+    print "a", a
+    for x in a['set'].itervalues():
+        print x
+    print "--"
+    print "b", b
+    for x in b['set'].itervalues():
+        print x
+    print
+
+    a['set2'] = set()
+    a['set2'].add("o1")
+    a['set2'].add("o1")
+    a['set2'].add("o2")
+
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems(readonly=True):
+        print x
+    print
+
+    del b['b']
+    try:
+        print b['b']
+    except KeyError:
+        print "Yay! deleted key raises error"
+
+    if b.has_key('b'):
+        print "Boo!"
+    else:
+        print "Yay - has_key with delete works!"
+    
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems(readonly=True):
+        print x
+    print
+
+    b.__revertitem__('b')
+
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems(readonly=True):
+        print x
+    print
+
+    b.__revertitem__('dict')
+    print "a", a
+    for x in a.iteritems():
+        print x
+    print "--"
+    print "b", b
+    for x in b.iteritems(readonly=True):
+        print x
+    print
diff --git a/bitbake-dev/lib/bb/__init__.py b/bitbake-dev/lib/bb/__init__.py
new file mode 100644
index 0000000000..99995212c3
--- /dev/null
+++ b/bitbake-dev/lib/bb/__init__.py
@@ -0,0 +1,1133 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# BitBake Build System Python Library
+#
+# Copyright (C) 2003  Holger Schurig
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# Based on Gentoo's portage.py.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+__version__ = "1.9.0"
+
+__all__ = [
+
+    "debug",
+    "note",
+    "error",
+    "fatal",
+
+    "mkdirhier",
+    "movefile",
+
+    "tokenize",
+    "evaluate",
+    "flatten",
+    "relparse",
+    "ververify",
+    "isjustname",
+    "isspecific",
+    "pkgsplit",
+    "catpkgsplit",
+    "vercmp",
+    "pkgcmp",
+    "dep_parenreduce",
+    "dep_opconvert",
+
+# fetch
+    "decodeurl",
+    "encodeurl",
+
+# modules
+    "parse",
+    "data",
+    "command",
+    "event",
+    "build",
+    "fetch",
+    "manifest",
+    "methodpool",
+    "cache",
+    "runqueue",
+    "taskdata",
+    "providers",
+ ]
+
+whitespace = '\t\n\x0b\x0c\r '
+lowercase = 'abcdefghijklmnopqrstuvwxyz'
+
+import sys, os, types, re, string, bb
+from bb import msg
+
+#projectdir = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
+projectdir = os.getcwd()
+
+if "BBDEBUG" in os.environ:
+    level = int(os.environ["BBDEBUG"])
+    if level:
+        bb.msg.set_debug_level(level)
+
+class VarExpandError(Exception):
+    pass
+
+class MalformedUrl(Exception):
+    """Exception raised when encountering an invalid url"""
+
+
+#######################################################################
+#######################################################################
+#
+# SECTION: Debug
+#
+# PURPOSE: little functions to make yourself known
+#
+#######################################################################
+#######################################################################
+
+def plain(*args):
+    bb.msg.warn(''.join(args))
+
+def debug(lvl, *args):
+    bb.msg.debug(lvl, None, ''.join(args))
+
+def note(*args):
+    bb.msg.note(1, None, ''.join(args))
+
+def warn(*args):
+    bb.msg.warn(1, None, ''.join(args))
+
+def error(*args):
+    bb.msg.error(None, ''.join(args))
+
+def fatal(*args):
+    bb.msg.fatal(None, ''.join(args))
+
+
+#######################################################################
+#######################################################################
+#
+# SECTION: File
+#
+# PURPOSE: Basic file and directory tree related functions
+#
+#######################################################################
+#######################################################################
+
+def mkdirhier(dir):
+    """Create a directory like 'mkdir -p', but does not complain if
+    directory already exists like os.makedirs
+    """
+
+    debug(3, "mkdirhier(%s)" % dir)
+    try:
+        os.makedirs(dir)
+        debug(2, "created " + dir)
+    except OSError, e:
+        if e.errno != 17: raise e
+
+
+#######################################################################
+
+import stat
+
+def movefile(src,dest,newmtime=None,sstat=None):
+    """Moves a file from src to dest, preserving all permissions and
+    attributes; mtime will be preserved even when moving across
+    filesystems.  Returns true on success and false on failure. Move is
+    atomic.
+    """
+
+    #print "movefile("+src+","+dest+","+str(newmtime)+","+str(sstat)+")"
+    try:
+        if not sstat:
+            sstat=os.lstat(src)
+    except Exception, e:
+        print "movefile: Stating source file failed...", e
+        return None
+
+    destexists=1
+    try:
+        dstat=os.lstat(dest)
+    except:
+        dstat=os.lstat(os.path.dirname(dest))
+        destexists=0
+
+    if destexists:
+        if stat.S_ISLNK(dstat[stat.ST_MODE]):
+            try:
+                os.unlink(dest)
+                destexists=0
+            except Exception, e:
+                pass
+
+    if stat.S_ISLNK(sstat[stat.ST_MODE]):
+        try:
+            target=os.readlink(src)
+            if destexists and not stat.S_ISDIR(dstat[stat.ST_MODE]):
+                os.unlink(dest)
+            os.symlink(target,dest)
+            #os.lchown(dest,sstat[stat.ST_UID],sstat[stat.ST_GID])
+            os.unlink(src)
+            return os.lstat(dest)
+        except Exception, e:
+            print "movefile: failed to properly create symlink:", dest, "->", target, e
+            return None
+
+    renamefailed=1
+    if sstat[stat.ST_DEV]==dstat[stat.ST_DEV]:
+        try:
+            ret=os.rename(src,dest)
+            renamefailed=0
+        except Exception, e:
+            import errno
+            if e[0]!=errno.EXDEV:
+                # Some random error.
+                print "movefile: Failed to move", src, "to", dest, e
+                return None
+            # Invalid cross-device-link 'bind' mounted or actually Cross-Device
+
+    if renamefailed:
+        didcopy=0
+        if stat.S_ISREG(sstat[stat.ST_MODE]):
+            try: # For safety copy then move it over.
+                shutil.copyfile(src,dest+"#new")
+                os.rename(dest+"#new",dest)
+                didcopy=1
+            except Exception, e:
+                print 'movefile: copy', src, '->', dest, 'failed.', e
+                return None
+        else:
+            #we don't yet handle special, so we need to fall back to /bin/mv
+            a=getstatusoutput("/bin/mv -f "+"'"+src+"' '"+dest+"'")
+            if a[0]!=0:
+                print "movefile: Failed to move special file:" + src + "' to '" + dest + "'", a
+                return None # failure
+        try:
+            if didcopy:
+                missingos.lchown(dest,sstat[stat.ST_UID],sstat[stat.ST_GID])
+                os.chmod(dest, stat.S_IMODE(sstat[stat.ST_MODE])) # Sticky is reset on chown
+                os.unlink(src)
+        except Exception, e:
+            print "movefile: Failed to chown/chmod/unlink", dest, e
+            return None
+
+    if newmtime:
+        os.utime(dest,(newmtime,newmtime))
+    else:
+        os.utime(dest, (sstat[stat.ST_ATIME], sstat[stat.ST_MTIME]))
+        newmtime=sstat[stat.ST_MTIME]
+    return newmtime
+
+def copyfile(src,dest,newmtime=None,sstat=None):
+    """
+    Copies a file from src to dest, preserving all permissions and
+    attributes; mtime will be preserved even when moving across
+    filesystems.  Returns true on success and false on failure.
+    """
+    import os, stat, shutil
+
+    #print "copyfile("+src+","+dest+","+str(newmtime)+","+str(sstat)+")"
+    try:
+        if not sstat:
+            sstat=os.lstat(src)
+    except Exception, e:
+        print "copyfile: Stating source file failed...", e
+        return False
+
+    destexists=1
+    try:
+        dstat=os.lstat(dest)
+    except:
+        dstat=os.lstat(os.path.dirname(dest))
+        destexists=0
+
+    if destexists:
+        if stat.S_ISLNK(dstat[stat.ST_MODE]):
+            try:
+                os.unlink(dest)
+                destexists=0
+            except Exception, e:
+                pass
+
+    if stat.S_ISLNK(sstat[stat.ST_MODE]):
+        try:
+            target=os.readlink(src)
+            if destexists and not stat.S_ISDIR(dstat[stat.ST_MODE]):
+                os.unlink(dest)
+            os.symlink(target,dest)
+            #os.lchown(dest,sstat[stat.ST_UID],sstat[stat.ST_GID])
+            return os.lstat(dest)
+        except Exception, e:
+            print "copyfile: failed to properly create symlink:", dest, "->", target, e
+            return False
+
+    if stat.S_ISREG(sstat[stat.ST_MODE]):
+            try: # For safety copy then move it over.
+                shutil.copyfile(src,dest+"#new")
+                os.rename(dest+"#new",dest)
+            except Exception, e:
+                print 'copyfile: copy', src, '->', dest, 'failed.', e
+                return False
+    else:
+            #we don't yet handle special, so we need to fall back to /bin/mv
+            a=getstatusoutput("/bin/cp -f "+"'"+src+"' '"+dest+"'")
+            if a[0]!=0:
+                print "copyfile: Failed to copy special file:" + src + "' to '" + dest + "'", a
+                return False # failure
+    try:
+        os.lchown(dest,sstat[stat.ST_UID],sstat[stat.ST_GID])
+        os.chmod(dest, stat.S_IMODE(sstat[stat.ST_MODE])) # Sticky is reset on chown
+    except Exception, e:
+        print "copyfile: Failed to chown/chmod/unlink", dest, e
+        return False
+
+    if newmtime:
+        os.utime(dest,(newmtime,newmtime))
+    else:
+        os.utime(dest, (sstat[stat.ST_ATIME], sstat[stat.ST_MTIME]))
+        newmtime=sstat[stat.ST_MTIME]
+    return newmtime
+
+#######################################################################
+#######################################################################
+#
+# SECTION: Download
+#
+# PURPOSE: Download via HTTP, FTP, CVS, BITKEEPER, handling of MD5-signatures
+#          and mirrors
+#
+#######################################################################
+#######################################################################
+
+def decodeurl(url):
+    """Decodes an URL into the tokens (scheme, network location, path,
+    user, password, parameters).
+
+    >>> decodeurl("http://www.google.com/index.html")
+    ('http', 'www.google.com', '/index.html', '', '', {})
+
+    CVS url with username, host and cvsroot. The cvs module to check out is in the
+    parameters:
+
+    >>> decodeurl("cvs://anoncvs@cvs.handhelds.org/cvs;module=familiar/dist/ipkg")
+    ('cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', '', {'module': 'familiar/dist/ipkg'})
+
+    Dito, but this time the username has a password part. And we also request a special tag
+    to check out.
+
+    >>> decodeurl("cvs://anoncvs:anonymous@cvs.handhelds.org/cvs;module=familiar/dist/ipkg;tag=V0-99-81")
+    ('cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', 'anonymous', {'tag': 'V0-99-81', 'module': 'familiar/dist/ipkg'})
+    """
+
+    m = re.compile('(?P<type>[^:]*)://((?P<user>.+)@)?(?P<location>[^;]+)(;(?P<parm>.*))?').match(url)
+    if not m:
+        raise MalformedUrl(url)
+
+    type = m.group('type')
+    location = m.group('location')
+    if not location:
+        raise MalformedUrl(url)
+    user = m.group('user')
+    parm = m.group('parm')
+
+    locidx = location.find('/')
+    if locidx != -1:
+        host = location[:locidx]
+        path = location[locidx:]
+    else:
+        host = ""
+        path = location
+    if user:
+        m = re.compile('(?P<user>[^:]+)(:?(?P<pswd>.*))').match(user)
+        if m:
+            user = m.group('user')
+            pswd = m.group('pswd')
+    else:
+        user = ''
+        pswd = ''
+
+    p = {}
+    if parm:
+        for s in parm.split(';'):
+            s1,s2 = s.split('=')
+            p[s1] = s2
+
+    return (type, host, path, user, pswd, p)
+
+#######################################################################
+
+def encodeurl(decoded):
+    """Encodes a URL from tokens (scheme, network location, path,
+    user, password, parameters).
+
+    >>> encodeurl(['http', 'www.google.com', '/index.html', '', '', {}])
+    'http://www.google.com/index.html'
+
+    CVS with username, host and cvsroot. The cvs module to check out is in the
+    parameters:
+
+    >>> encodeurl(['cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', '', {'module': 'familiar/dist/ipkg'}])
+    'cvs://anoncvs@cvs.handhelds.org/cvs;module=familiar/dist/ipkg'
+
+    Dito, but this time the username has a password part. And we also request a special tag
+    to check out.
+
+    >>> encodeurl(['cvs', 'cvs.handhelds.org', '/cvs', 'anoncvs', 'anonymous', {'tag': 'V0-99-81', 'module': 'familiar/dist/ipkg'}])
+    'cvs://anoncvs:anonymous@cvs.handhelds.org/cvs;tag=V0-99-81;module=familiar/dist/ipkg'
+    """
+
+    (type, host, path, user, pswd, p) = decoded
+
+    if not type or not path:
+        fatal("invalid or missing parameters for url encoding")
+    url = '%s://' % type
+    if user:
+        url += "%s" % user
+        if pswd:
+            url += ":%s" % pswd
+        url += "@"
+    if host:
+        url += "%s" % host
+    url += "%s" % path
+    if p:
+        for parm in p.keys():
+            url += ";%s=%s" % (parm, p[parm])
+
+    return url
+
+#######################################################################
+
+def which(path, item, direction = 0):
+    """
+    Locate a file in a PATH
+    """
+
+    paths = (path or "").split(':')
+    if direction != 0:
+        paths.reverse()
+
+    for p in (path or "").split(':'):
+        next = os.path.join(p, item)
+        if os.path.exists(next):
+            return next
+
+    return ""
+
+#######################################################################
+
+
+
+
+#######################################################################
+#######################################################################
+#
+# SECTION: Dependency
+#
+# PURPOSE: Compare build & run dependencies
+#
+#######################################################################
+#######################################################################
+
+def tokenize(mystring):
+    """Breaks a string like 'foo? (bar) oni? (blah (blah))' into (possibly embedded) lists:
+
+    >>> tokenize("x")
+    ['x']
+    >>> tokenize("x y")
+    ['x', 'y']
+    >>> tokenize("(x y)")
+    [['x', 'y']]
+    >>> tokenize("(x y) b c")
+    [['x', 'y'], 'b', 'c']
+    >>> tokenize("foo? (bar) oni? (blah (blah))")
+    ['foo?', ['bar'], 'oni?', ['blah', ['blah']]]
+    >>> tokenize("sys-apps/linux-headers nls? (sys-devel/gettext)")
+    ['sys-apps/linux-headers', 'nls?', ['sys-devel/gettext']]
+    """
+
+    newtokens = []
+    curlist   = newtokens
+    prevlists = []
+    level     = 0
+    accum     = ""
+    for x in mystring:
+        if x=="(":
+            if accum:
+                curlist.append(accum)
+                accum=""
+            prevlists.append(curlist)
+            curlist=[]
+            level=level+1
+        elif x==")":
+            if accum:
+                curlist.append(accum)
+                accum=""
+            if level==0:
+                print "!!! tokenizer: Unmatched left parenthesis in:\n'"+mystring+"'"
+                return None
+            newlist=curlist
+            curlist=prevlists.pop()
+            curlist.append(newlist)
+            level=level-1
+        elif x in whitespace:
+            if accum:
+                curlist.append(accum)
+                accum=""
+        else:
+            accum=accum+x
+    if accum:
+        curlist.append(accum)
+    if (level!=0):
+        print "!!! tokenizer: Exiting with unterminated parenthesis in:\n'"+mystring+"'"
+        return None
+    return newtokens
+
+
+#######################################################################
+
+def evaluate(tokens,mydefines,allon=0):
+    """Removes tokens based on whether conditional definitions exist or not.
+    Recognizes !
+
+    >>> evaluate(['sys-apps/linux-headers', 'nls?', ['sys-devel/gettext']], {})
+    ['sys-apps/linux-headers']
+
+    Negate the flag:
+
+    >>> evaluate(['sys-apps/linux-headers', '!nls?', ['sys-devel/gettext']], {})
+    ['sys-apps/linux-headers', ['sys-devel/gettext']]
+
+    Define 'nls':
+
+    >>> evaluate(['sys-apps/linux-headers', 'nls?', ['sys-devel/gettext']], {"nls":1})
+    ['sys-apps/linux-headers', ['sys-devel/gettext']]
+
+    Turn allon on:
+
+    >>> evaluate(['sys-apps/linux-headers', 'nls?', ['sys-devel/gettext']], {}, True)
+    ['sys-apps/linux-headers', ['sys-devel/gettext']]
+    """
+
+    if tokens == None:
+        return None
+    mytokens = tokens + []        # this copies the list
+    pos = 0
+    while pos < len(mytokens):
+        if type(mytokens[pos]) == types.ListType:
+            evaluate(mytokens[pos], mydefines)
+            if not len(mytokens[pos]):
+                del mytokens[pos]
+                continue
+        elif mytokens[pos][-1] == "?":
+            cur = mytokens[pos][:-1]
+            del mytokens[pos]
+            if allon:
+                if cur[0] == "!":
+                    del mytokens[pos]
+            else:
+                if cur[0] == "!":
+                    if (cur[1:] in mydefines) and (pos < len(mytokens)):
+                        del mytokens[pos]
+                        continue
+                elif (cur not in mydefines) and (pos < len(mytokens)):
+                    del mytokens[pos]
+                    continue
+        pos = pos + 1
+    return mytokens
+
+
+#######################################################################
+
+def flatten(mytokens):
+    """Converts nested arrays into a flat arrays:
+
+    >>> flatten([1,[2,3]])
+    [1, 2, 3]
+    >>> flatten(['sys-apps/linux-headers', ['sys-devel/gettext']])
+    ['sys-apps/linux-headers', 'sys-devel/gettext']
+    """
+
+    newlist=[]
+    for x in mytokens:
+        if type(x)==types.ListType:
+            newlist.extend(flatten(x))
+        else:
+            newlist.append(x)
+    return newlist
+
+
+#######################################################################
+
+_package_weights_ = {"pre":-2,"p":0,"alpha":-4,"beta":-3,"rc":-1}    # dicts are unordered
+_package_ends_    = ["pre", "p", "alpha", "beta", "rc", "cvs", "bk", "HEAD" ]            # so we need ordered list
+
+def relparse(myver):
+    """Parses the last elements of a version number into a triplet, that can
+    later be compared:
+
+    >>> relparse('1.2_pre3')
+    [1.2, -2, 3.0]
+    >>> relparse('1.2b')
+    [1.2, 98, 0]
+    >>> relparse('1.2')
+    [1.2, 0, 0]
+    """
+
+    number   = 0
+    p1       = 0
+    p2       = 0
+    mynewver = myver.split('_')
+    if len(mynewver)==2:
+        # an _package_weights_
+        number = float(mynewver[0])
+        match = 0
+        for x in _package_ends_:
+            elen = len(x)
+            if mynewver[1][:elen] == x:
+                match = 1
+                p1 = _package_weights_[x]
+                try:
+                    p2 = float(mynewver[1][elen:])
+                except:
+                    p2 = 0
+                break
+        if not match:
+            # normal number or number with letter at end
+            divider = len(myver)-1
+            if myver[divider:] not in "1234567890":
+                # letter at end
+                p1 = ord(myver[divider:])
+                number = float(myver[0:divider])
+            else:
+                number = float(myver)
+    else:
+        # normal number or number with letter at end
+        divider = len(myver)-1
+        if myver[divider:] not in "1234567890":
+            #letter at end
+            p1     = ord(myver[divider:])
+            number = float(myver[0:divider])
+        else:
+            number = float(myver)
+    return [number,p1,p2]
+
+
+#######################################################################
+
+__ververify_cache__ = {}
+
+def ververify(myorigval,silent=1):
+    """Returns 1 if given a valid version string, els 0. Valid versions are in the format
+
+    <v1>.<v2>...<vx>[a-z,_{_package_weights_}[vy]]
+
+    >>> ververify('2.4.20')
+    1
+    >>> ververify('2.4..20')        # two dots
+    0
+    >>> ververify('2.x.20')            # 'x' is not numeric
+    0
+    >>> ververify('2.4.20a')
+    1
+    >>> ververify('2.4.20cvs')        # only one trailing letter
+    0
+    >>> ververify('1a')
+    1
+    >>> ververify('test_a')            # no version at all
+    0
+    >>> ververify('2.4.20_beta1')
+    1
+    >>> ververify('2.4.20_beta')
+    1
+    >>> ververify('2.4.20_wrongext')    # _wrongext is no valid trailer
+    0
+    """
+
+    # Lookup the cache first
+    try:
+        return __ververify_cache__[myorigval]
+    except KeyError:
+        pass
+
+    if len(myorigval) == 0:
+        if not silent:
+            error("package version is empty")
+        __ververify_cache__[myorigval] = 0
+        return 0
+    myval = myorigval.split('.')
+    if len(myval)==0:
+        if not silent:
+            error("package name has empty version string")
+        __ververify_cache__[myorigval] = 0
+        return 0
+    # all but the last version must be a numeric
+    for x in myval[:-1]:
+        if not len(x):
+            if not silent:
+                error("package version has two points in a row")
+            __ververify_cache__[myorigval] = 0
+            return 0
+        try:
+            foo = int(x)
+        except:
+            if not silent:
+                error("package version contains non-numeric '"+x+"'")
+            __ververify_cache__[myorigval] = 0
+            return 0
+    if not len(myval[-1]):
+            if not silent:
+                error("package version has trailing dot")
+            __ververify_cache__[myorigval] = 0
+            return 0
+    try:
+        foo = int(myval[-1])
+        __ververify_cache__[myorigval] = 1
+        return 1
+    except:
+        pass
+
+    # ok, our last component is not a plain number or blank, let's continue
+    if myval[-1][-1] in lowercase:
+        try:
+            foo = int(myval[-1][:-1])
+            return 1
+            __ververify_cache__[myorigval] = 1
+            # 1a, 2.0b, etc.
+        except:
+            pass
+    # ok, maybe we have a 1_alpha or 1_beta2; let's see
+    ep=string.split(myval[-1],"_")
+    if len(ep)!= 2:
+        if not silent:
+            error("package version has more than one letter at then end")
+        __ververify_cache__[myorigval] = 0
+        return 0
+    try:
+        foo = string.atoi(ep[0])
+    except:
+        # this needs to be numeric, i.e. the "1" in "1_alpha"
+        if not silent:
+            error("package version must have numeric part before the '_'")
+        __ververify_cache__[myorigval] = 0
+        return 0
+
+    for mye in _package_ends_:
+        if ep[1][0:len(mye)] == mye:
+            if len(mye) == len(ep[1]):
+                # no trailing numeric is ok
+                __ververify_cache__[myorigval] = 1
+                return 1
+            else:
+                try:
+                    foo = string.atoi(ep[1][len(mye):])
+                    __ververify_cache__[myorigval] = 1
+                    return 1
+                except:
+                    # if no _package_weights_ work, *then* we return 0
+                    pass
+    if not silent:
+        error("package version extension after '_' is invalid")
+    __ververify_cache__[myorigval] = 0
+    return 0
+
+
+def isjustname(mypkg):
+    myparts = string.split(mypkg,'-')
+    for x in myparts:
+        if ververify(x):
+            return 0
+    return 1
+
+
+_isspecific_cache_={}
+
+def isspecific(mypkg):
+    "now supports packages with no category"
+    try:
+        return __isspecific_cache__[mypkg]
+    except:
+        pass
+
+    mysplit = string.split(mypkg,"/")
+    if not isjustname(mysplit[-1]):
+            __isspecific_cache__[mypkg] = 1
+            return 1
+    __isspecific_cache__[mypkg] = 0
+    return 0
+
+
+#######################################################################
+
+__pkgsplit_cache__={}
+
+def pkgsplit(mypkg, silent=1):
+
+    """This function can be used as a package verification function. If
+    it is a valid name, pkgsplit will return a list containing:
+    [pkgname, pkgversion(norev), pkgrev ].
+
+    >>> pkgsplit('')
+    >>> pkgsplit('x')
+    >>> pkgsplit('x-')
+    >>> pkgsplit('-1')
+    >>> pkgsplit('glibc-1.2-8.9-r7')
+    >>> pkgsplit('glibc-2.2.5-r7')
+    ['glibc', '2.2.5', 'r7']
+    >>> pkgsplit('foo-1.2-1')
+    >>> pkgsplit('Mesa-3.0')
+    ['Mesa', '3.0', 'r0']
+    """
+
+    try:
+        return __pkgsplit_cache__[mypkg]
+    except KeyError:
+        pass
+
+    myparts = string.split(mypkg,'-')
+    if len(myparts) < 2:
+        if not silent:
+            error("package name without name or version part")
+        __pkgsplit_cache__[mypkg] = None
+        return None
+    for x in myparts:
+        if len(x) == 0:
+            if not silent:
+                error("package name with empty name or version part")
+            __pkgsplit_cache__[mypkg] = None
+            return None
+    # verify rev
+    revok = 0
+    myrev = myparts[-1]
+    ververify(myrev, silent)
+    if len(myrev) and myrev[0] == "r":
+        try:
+            string.atoi(myrev[1:])
+            revok = 1
+        except:
+            pass
+    if revok:
+        if ververify(myparts[-2]):
+            if len(myparts) == 2:
+                __pkgsplit_cache__[mypkg] = None
+                return None
+            else:
+                for x in myparts[:-2]:
+                    if ververify(x):
+                        __pkgsplit_cache__[mypkg]=None
+                        return None
+                        # names can't have versiony looking parts
+                myval=[string.join(myparts[:-2],"-"),myparts[-2],myparts[-1]]
+                __pkgsplit_cache__[mypkg]=myval
+                return myval
+        else:
+            __pkgsplit_cache__[mypkg] = None
+            return None
+
+    elif ververify(myparts[-1],silent):
+        if len(myparts)==1:
+            if not silent:
+                print "!!! Name error in",mypkg+": missing name part."
+            __pkgsplit_cache__[mypkg]=None
+            return None
+        else:
+            for x in myparts[:-1]:
+                if ververify(x):
+                    if not silent: error("package name has multiple version parts")
+                    __pkgsplit_cache__[mypkg] = None
+                    return None
+            myval = [string.join(myparts[:-1],"-"), myparts[-1],"r0"]
+            __pkgsplit_cache__[mypkg] = myval
+            return myval
+    else:
+        __pkgsplit_cache__[mypkg] = None
+        return None
+
+
+#######################################################################
+
+__catpkgsplit_cache__ = {}
+
+def catpkgsplit(mydata,silent=1):
+    """returns [cat, pkgname, version, rev ]
+
+    >>> catpkgsplit('sys-libs/glibc-1.2-r7')
+    ['sys-libs', 'glibc', '1.2', 'r7']
+    >>> catpkgsplit('glibc-1.2-r7')
+    [None, 'glibc', '1.2', 'r7']
+    """
+
+    try:
+        return __catpkgsplit_cache__[mydata]
+    except KeyError:
+        pass
+
+    cat = os.path.basename(os.path.dirname(mydata))
+    mydata = os.path.join(cat, os.path.basename(mydata))
+    if mydata[-3:] == '.bb':
+        mydata = mydata[:-3]
+
+    mysplit = mydata.split("/")
+    p_split = None
+    splitlen = len(mysplit)
+    if splitlen == 1:
+        retval = [None]
+        p_split = pkgsplit(mydata,silent)
+    else:
+        retval = [mysplit[splitlen - 2]]
+        p_split = pkgsplit(mysplit[splitlen - 1],silent)
+    if not p_split:
+        __catpkgsplit_cache__[mydata] = None
+        return None
+    retval.extend(p_split)
+    __catpkgsplit_cache__[mydata] = retval
+    return retval
+
+
+#######################################################################
+
+__vercmp_cache__ = {}
+
+def vercmp(val1,val2):
+    """This takes two version strings and returns an integer to tell you whether
+    the versions are the same, val1>val2 or val2>val1.
+
+    >>> vercmp('1', '2')
+    -1.0
+    >>> vercmp('2', '1')
+    1.0
+    >>> vercmp('1', '1.0')
+    0
+    >>> vercmp('1', '1.1')
+    -1.0
+    >>> vercmp('1.1', '1_p2')
+    1.0
+    """
+
+    # quick short-circuit
+    if val1 == val2:
+        return 0
+    valkey = val1+" "+val2
+
+    # cache lookup
+    try:
+        return __vercmp_cache__[valkey]
+        try:
+            return - __vercmp_cache__[val2+" "+val1]
+        except KeyError:
+            pass
+    except KeyError:
+        pass
+
+    # consider 1_p2 vc 1.1
+    # after expansion will become (1_p2,0) vc (1,1)
+    # then 1_p2 is compared with 1 before 0 is compared with 1
+    # to solve the bug we need to convert it to (1,0_p2)
+    # by splitting _prepart part and adding it back _after_expansion
+
+    val1_prepart = val2_prepart = ''
+    if val1.count('_'):
+        val1, val1_prepart = val1.split('_', 1)
+    if val2.count('_'):
+        val2, val2_prepart = val2.split('_', 1)
+
+    # replace '-' by '.'
+    # FIXME: Is it needed? can val1/2 contain '-'?
+
+    val1 = string.split(val1,'-')
+    if len(val1) == 2:
+        val1[0] = val1[0] +"."+ val1[1]
+    val2 = string.split(val2,'-')
+    if len(val2) == 2:
+        val2[0] = val2[0] +"."+ val2[1]
+
+    val1 = string.split(val1[0],'.')
+    val2 = string.split(val2[0],'.')
+
+    # add back decimal point so that .03 does not become "3" !
+    for x in range(1,len(val1)):
+        if val1[x][0] == '0' :
+            val1[x] = '.' + val1[x]
+    for x in range(1,len(val2)):
+        if val2[x][0] == '0' :
+            val2[x] = '.' + val2[x]
+
+    # extend varion numbers
+    if len(val2) < len(val1):
+        val2.extend(["0"]*(len(val1)-len(val2)))
+    elif len(val1) < len(val2):
+        val1.extend(["0"]*(len(val2)-len(val1)))
+
+    # add back _prepart tails
+    if val1_prepart:
+        val1[-1] += '_' + val1_prepart
+    if val2_prepart:
+        val2[-1] += '_' + val2_prepart
+    # The above code will extend version numbers out so they
+    # have the same number of digits.
+    for x in range(0,len(val1)):
+        cmp1 = relparse(val1[x])
+        cmp2 = relparse(val2[x])
+        for y in range(0,3):
+            myret = cmp1[y] - cmp2[y]
+            if myret != 0:
+                __vercmp_cache__[valkey] = myret
+                return myret
+    __vercmp_cache__[valkey] = 0
+    return 0
+
+
+#######################################################################
+
+def pkgcmp(pkg1,pkg2):
+    """ Compares two packages, which should have been split via
+    pkgsplit(). if the return value val is less than zero, then pkg2 is
+    newer than pkg1, zero if equal and positive if older.
+
+    >>> pkgcmp(['glibc', '2.2.5', 'r7'], ['glibc', '2.2.5', 'r7'])
+    0
+    >>> pkgcmp(['glibc', '2.2.5', 'r4'], ['glibc', '2.2.5', 'r7'])
+    -1
+    >>> pkgcmp(['glibc', '2.2.5', 'r7'], ['glibc', '2.2.5', 'r2'])
+    1
+    """
+
+    mycmp = vercmp(pkg1[1],pkg2[1])
+    if mycmp > 0:
+        return 1
+    if mycmp < 0:
+        return -1
+    r1=string.atoi(pkg1[2][1:])
+    r2=string.atoi(pkg2[2][1:])
+    if r1 > r2:
+        return 1
+    if r2 > r1:
+        return -1
+    return 0
+
+
+#######################################################################
+
+def dep_parenreduce(mysplit, mypos=0):
+    """Accepts a list of strings, and converts '(' and ')' surrounded items to sub-lists:
+
+    >>> dep_parenreduce([''])
+    ['']
+    >>> dep_parenreduce(['1', '2', '3'])
+    ['1', '2', '3']
+    >>> dep_parenreduce(['1', '(', '2', '3', ')', '4'])
+    ['1', ['2', '3'], '4']
+    """
+
+    while mypos < len(mysplit):
+        if mysplit[mypos] == "(":
+            firstpos = mypos
+            mypos = mypos + 1
+            while mypos < len(mysplit):
+                if mysplit[mypos] == ")":
+                    mysplit[firstpos:mypos+1] = [mysplit[firstpos+1:mypos]]
+                    mypos = firstpos
+                    break
+                elif mysplit[mypos] == "(":
+                    # recurse
+                    mysplit = dep_parenreduce(mysplit,mypos)
+                mypos = mypos + 1
+        mypos = mypos + 1
+    return mysplit
+
+
+def dep_opconvert(mysplit, myuse):
+    "Does dependency operator conversion"
+
+    mypos   = 0
+    newsplit = []
+    while mypos < len(mysplit):
+        if type(mysplit[mypos]) == types.ListType:
+            newsplit.append(dep_opconvert(mysplit[mypos],myuse))
+            mypos += 1
+        elif mysplit[mypos] == ")":
+            # mismatched paren, error
+            return None
+        elif mysplit[mypos]=="||":
+            if ((mypos+1)>=len(mysplit)) or (type(mysplit[mypos+1])!=types.ListType):
+                # || must be followed by paren'd list
+                return None
+            try:
+                mynew = dep_opconvert(mysplit[mypos+1],myuse)
+            except Exception, e:
+                error("unable to satisfy OR dependancy: " + string.join(mysplit," || "))
+                raise e
+            mynew[0:0] = ["||"]
+            newsplit.append(mynew)
+            mypos += 2
+        elif mysplit[mypos][-1] == "?":
+            # use clause, i.e "gnome? ( foo bar )"
+            # this is a quick and dirty hack so that repoman can enable all USE vars:
+            if (len(myuse) == 1) and (myuse[0] == "*"):
+                # enable it even if it's ! (for repoman) but kill it if it's
+                # an arch variable that isn't for this arch. XXX Sparc64?
+                if (mysplit[mypos][:-1] not in settings.usemask) or \
+                        (mysplit[mypos][:-1]==settings["ARCH"]):
+                    enabled=1
+                else:
+                    enabled=0
+            else:
+                if mysplit[mypos][0] == "!":
+                    myusevar = mysplit[mypos][1:-1]
+                    enabled = not myusevar in myuse
+                    #if myusevar in myuse:
+                    #    enabled = 0
+                    #else:
+                    #    enabled = 1
+                else:
+                    myusevar=mysplit[mypos][:-1]
+                    enabled = myusevar in myuse
+                    #if myusevar in myuse:
+                    #    enabled=1
+                    #else:
+                    #    enabled=0
+            if (mypos +2 < len(mysplit)) and (mysplit[mypos+2] == ":"):
+                # colon mode
+                if enabled:
+                    # choose the first option
+                    if type(mysplit[mypos+1]) == types.ListType:
+                        newsplit.append(dep_opconvert(mysplit[mypos+1],myuse))
+                    else:
+                        newsplit.append(mysplit[mypos+1])
+                else:
+                    # choose the alternate option
+                    if type(mysplit[mypos+1]) == types.ListType:
+                        newsplit.append(dep_opconvert(mysplit[mypos+3],myuse))
+                    else:
+                        newsplit.append(mysplit[mypos+3])
+                mypos += 4
+            else:
+                # normal use mode
+                if enabled:
+                    if type(mysplit[mypos+1]) == types.ListType:
+                        newsplit.append(dep_opconvert(mysplit[mypos+1],myuse))
+                    else:
+                        newsplit.append(mysplit[mypos+1])
+                # otherwise, continue
+                mypos += 2
+        else:
+            # normal item
+            newsplit.append(mysplit[mypos])
+            mypos += 1
+    return newsplit
+
+if __name__ == "__main__":
+    import doctest, bb
+    doctest.testmod(bb)
diff --git a/bitbake-dev/lib/bb/build.py b/bitbake-dev/lib/bb/build.py
new file mode 100644
index 0000000000..ca7cfbc6bb
--- /dev/null
+++ b/bitbake-dev/lib/bb/build.py
@@ -0,0 +1,377 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# BitBake 'Build' implementation
+#
+# Core code for function execution and task handling in the
+# BitBake build tools.
+#
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# Based on Gentoo's portage.py.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+#Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+from bb import data, event, mkdirhier, utils
+import bb, os, sys
+
+# events
+class FuncFailed(Exception):
+    """
+    Executed function failed
+    First parameter a message
+    Second paramter is a logfile (optional)
+    """
+
+class EventException(Exception):
+    """Exception which is associated with an Event."""
+
+    def __init__(self, msg, event):
+        self.args = msg, event
+
+class TaskBase(event.Event):
+    """Base class for task events"""
+
+    def __init__(self, t, d ):
+        self._task = t
+        self._package = bb.data.getVar("PF", d, 1)
+        event.Event.__init__(self, d)
+        self._message = "package %s: task %s: %s" % (bb.data.getVar("PF", d, 1), t, bb.event.getName(self)[4:])
+
+    def getTask(self):
+        return self._task
+
+    def setTask(self, task):
+        self._task = task
+
+    task = property(getTask, setTask, None, "task property")
+
+class TaskStarted(TaskBase):
+    """Task execution started"""
+
+class TaskSucceeded(TaskBase):
+    """Task execution completed"""
+
+class TaskFailed(TaskBase):
+    """Task execution failed"""
+    def __init__(self, msg, logfile, t, d ):
+        self.logfile = logfile
+        self.msg = msg
+        TaskBase.__init__(self, t, d)
+
+class InvalidTask(TaskBase):
+    """Invalid Task"""
+
+# functions
+
+def exec_func(func, d, dirs = None):
+    """Execute an BB 'function'"""
+
+    body = data.getVar(func, d)
+    if not body:
+        return
+
+    flags = data.getVarFlags(func, d)
+    for item in ['deps', 'check', 'interactive', 'python', 'cleandirs', 'dirs', 'lockfiles', 'fakeroot']:
+        if not item in flags:
+            flags[item] = None
+
+    ispython = flags['python']
+
+    cleandirs = (data.expand(flags['cleandirs'], d) or "").split()
+    for cdir in cleandirs:
+        os.system("rm -rf %s" % cdir)
+
+    if dirs:
+        dirs = data.expand(dirs, d)
+    else:
+        dirs = (data.expand(flags['dirs'], d) or "").split()
+    for adir in dirs:
+        mkdirhier(adir)
+
+    if len(dirs) > 0:
+        adir = dirs[-1]
+    else:
+        adir = data.getVar('B', d, 1)
+
+    # Save current directory
+    try:
+        prevdir = os.getcwd()
+    except OSError:
+        prevdir = data.getVar('TOPDIR', d, True)
+
+    # Setup logfiles
+    t = data.getVar('T', d, 1)
+    if not t:
+        bb.msg.fatal(bb.msg.domain.Build, "T not set")
+    mkdirhier(t)
+    # Gross hack, FIXME
+    import random
+    logfile = "%s/log.%s.%s.%s" % (t, func, str(os.getpid()),random.random())
+    runfile = "%s/run.%s.%s" % (t, func, str(os.getpid()))
+
+    # Change to correct directory (if specified)
+    if adir and os.access(adir, os.F_OK):
+        os.chdir(adir)
+
+    # Handle logfiles
+    si = file('/dev/null', 'r')
+    try:
+        if bb.msg.debug_level['default'] > 0 or ispython:
+            so = os.popen("tee \"%s\"" % logfile, "w")
+        else:
+            so = file(logfile, 'w')
+    except OSError, e:
+        bb.msg.error(bb.msg.domain.Build, "opening log file: %s" % e)
+        pass
+
+    se = so
+
+    # Dup the existing fds so we dont lose them
+    osi = [os.dup(sys.stdin.fileno()), sys.stdin.fileno()]
+    oso = [os.dup(sys.stdout.fileno()), sys.stdout.fileno()]
+    ose = [os.dup(sys.stderr.fileno()), sys.stderr.fileno()]
+
+    # Replace those fds with our own
+    os.dup2(si.fileno(), osi[1])
+    os.dup2(so.fileno(), oso[1])
+    os.dup2(se.fileno(), ose[1])
+
+    locks = []
+    lockfiles = (data.expand(flags['lockfiles'], d) or "").split()
+    for lock in lockfiles:
+        locks.append(bb.utils.lockfile(lock))
+
+    try:
+        # Run the function
+        if ispython:
+            exec_func_python(func, d, runfile, logfile)
+        else:
+            exec_func_shell(func, d, runfile, logfile, flags)
+
+        # Restore original directory
+        try:
+            os.chdir(prevdir)
+        except:
+            pass
+
+    finally:
+
+        # Unlock any lockfiles
+        for lock in locks:
+            bb.utils.unlockfile(lock)
+
+        # Restore the backup fds
+        os.dup2(osi[0], osi[1])
+        os.dup2(oso[0], oso[1])
+        os.dup2(ose[0], ose[1])
+
+        # Close our logs
+        si.close()
+        so.close()
+        se.close()
+
+        # Close the backup fds
+        os.close(osi[0])
+        os.close(oso[0])
+        os.close(ose[0])
+
+def exec_func_python(func, d, runfile, logfile):
+    """Execute a python BB 'function'"""
+    import re, os
+
+    bbfile = bb.data.getVar('FILE', d, 1)
+    tmp  = "def " + func + "():\n%s" % data.getVar(func, d)
+    tmp += '\n' + func + '()'
+
+    f = open(runfile, "w")
+    f.write(tmp)
+    comp = utils.better_compile(tmp, func, bbfile)
+    g = {} # globals
+    g['bb'] = bb
+    g['os'] = os
+    g['d'] = d
+    utils.better_exec(comp, g, tmp, bbfile)
+
+
+def exec_func_shell(func, d, runfile, logfile, flags):
+    """Execute a shell BB 'function' Returns true if execution was successful.
+
+    For this, it creates a bash shell script in the tmp dectory, writes the local
+    data into it and finally executes. The output of the shell will end in a log file and stdout.
+
+    Note on directory behavior.  The 'dirs' varflag should contain a list
+    of the directories you need created prior to execution.  The last
+    item in the list is where we will chdir/cd to.
+    """
+
+    deps = flags['deps']
+    check = flags['check']
+    if check in globals():
+        if globals()[check](func, deps):
+            return
+
+    f = open(runfile, "w")
+    f.write("#!/bin/sh -e\n")
+    if bb.msg.debug_level['default'] > 0: f.write("set -x\n")
+    data.emit_env(f, d)
+
+    f.write("cd %s\n" % os.getcwd())
+    if func: f.write("%s\n" % func)
+    f.close()
+    os.chmod(runfile, 0775)
+    if not func:
+        bb.msg.error(bb.msg.domain.Build, "Function not specified")
+        raise FuncFailed("Function not specified for exec_func_shell")
+
+    # execute function
+    if flags['fakeroot']:
+        maybe_fakeroot = "PATH=\"%s\" fakeroot " % bb.data.getVar("PATH", d, 1)
+    else:
+        maybe_fakeroot = ''
+    lang_environment = "LC_ALL=C "
+    ret = os.system('%s%ssh -e %s' % (lang_environment, maybe_fakeroot, runfile))
+
+    if ret == 0:
+        return
+
+    bb.msg.error(bb.msg.domain.Build, "Function %s failed" % func)
+    raise FuncFailed("function %s failed" % func, logfile)
+
+
+def exec_task(task, d):
+    """Execute an BB 'task'
+
+       The primary difference between executing a task versus executing
+       a function is that a task exists in the task digraph, and therefore
+       has dependencies amongst other tasks."""
+
+    # Check whther this is a valid task
+    if not data.getVarFlag(task, 'task', d):
+        raise EventException("No such task", InvalidTask(task, d))
+
+    try:
+        bb.msg.debug(1, bb.msg.domain.Build, "Executing task %s" % task)
+        old_overrides = data.getVar('OVERRIDES', d, 0)
+        localdata = data.createCopy(d)
+        data.setVar('OVERRIDES', 'task_%s:%s' % (task, old_overrides), localdata)
+        data.update_data(localdata)
+        event.fire(TaskStarted(task, localdata))
+        exec_func(task, localdata)
+        event.fire(TaskSucceeded(task, localdata))
+    except FuncFailed, message:
+        # Try to extract the optional logfile
+        try:
+            (msg, logfile) = message
+        except:
+            logfile = None
+            msg = message
+        bb.msg.note(1, bb.msg.domain.Build, "Task failed: %s" % message )
+        failedevent = TaskFailed(msg, logfile, task, d)
+        event.fire(failedevent)
+        raise EventException("Function failed in task: %s" % message, failedevent)
+
+    # make stamp, or cause event and raise exception
+    if not data.getVarFlag(task, 'nostamp', d) and not data.getVarFlag(task, 'selfstamp', d):
+        make_stamp(task, d)
+
+def extract_stamp(d, fn):
+    """
+    Extracts stamp format which is either a data dictonary (fn unset) 
+    or a dataCache entry (fn set). 
+    """
+    if fn:
+        return d.stamp[fn]
+    return data.getVar('STAMP', d, 1)
+
+def stamp_internal(task, d, file_name):
+    """
+    Internal stamp helper function
+    Removes any stamp for the given task
+    Makes sure the stamp directory exists
+    Returns the stamp path+filename
+    """
+    stamp = extract_stamp(d, file_name)
+    if not stamp:
+        return
+    stamp = "%s.%s" % (stamp, task)
+    mkdirhier(os.path.dirname(stamp))
+    # Remove the file and recreate to force timestamp
+    # change on broken NFS filesystems
+    if os.access(stamp, os.F_OK):
+        os.remove(stamp)
+    return stamp
+
+def make_stamp(task, d, file_name = None):
+    """
+    Creates/updates a stamp for a given task
+    (d can be a data dict or dataCache)
+    """
+    stamp = stamp_internal(task, d, file_name)
+    if stamp:
+        f = open(stamp, "w")
+        f.close()
+
+def del_stamp(task, d, file_name = None):
+    """
+    Removes a stamp for a given task
+    (d can be a data dict or dataCache)
+    """
+    stamp_internal(task, d, file_name)
+
+def add_tasks(tasklist, d):
+    task_deps = data.getVar('_task_deps', d)
+    if not task_deps:
+        task_deps = {}
+    if not 'tasks' in task_deps:
+        task_deps['tasks'] = []
+    if not 'parents' in task_deps:
+        task_deps['parents'] = {}
+
+    for task in tasklist:
+        task = data.expand(task, d)
+        data.setVarFlag(task, 'task', 1, d)
+
+        if not task in task_deps['tasks']:
+            task_deps['tasks'].append(task)
+
+        flags = data.getVarFlags(task, d)    
+        def getTask(name):
+            if not name in task_deps:
+                task_deps[name] = {}
+            if name in flags:
+                deptask = data.expand(flags[name], d)
+                task_deps[name][task] = deptask
+        getTask('depends')
+        getTask('deptask')
+        getTask('rdeptask')
+        getTask('recrdeptask')
+        getTask('nostamp')
+        task_deps['parents'][task] = []
+        for dep in flags['deps']:
+            dep = data.expand(dep, d)
+            task_deps['parents'][task].append(dep)
+
+    # don't assume holding a reference
+    data.setVar('_task_deps', task_deps, d)
+
+def remove_task(task, kill, d):
+    """Remove an BB 'task'.
+
+       If kill is 1, also remove tasks that depend on this task."""
+
+    data.delVarFlag(task, 'task', d)
+
diff --git a/bitbake-dev/lib/bb/cache.py b/bitbake-dev/lib/bb/cache.py
new file mode 100644
index 0000000000..bcf393a578
--- /dev/null
+++ b/bitbake-dev/lib/bb/cache.py
@@ -0,0 +1,465 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# BitBake 'Event' implementation
+#
+# Caching of bitbake variables before task execution
+
+# Copyright (C) 2006        Richard Purdie
+
+# but small sections based on code from bin/bitbake:
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+# Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
+# Copyright (C) 2005        Holger Hans Peter Freyther
+# Copyright (C) 2005        ROAD GmbH
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+import os, re
+import bb.data
+import bb.utils
+from sets import Set
+
+try:
+    import cPickle as pickle
+except ImportError:
+    import pickle
+    bb.msg.note(1, bb.msg.domain.Cache, "Importing cPickle failed. Falling back to a very slow implementation.")
+
+__cache_version__ = "128"
+
+class Cache:
+    """
+    BitBake Cache implementation
+    """
+    def __init__(self, cooker):
+
+
+        self.cachedir = bb.data.getVar("CACHE", cooker.configuration.data, True)
+        self.clean = {}
+        self.checked = {}
+        self.depends_cache = {}
+        self.data = None
+        self.data_fn = None
+        self.cacheclean = True
+
+        if self.cachedir in [None, '']:
+            self.has_cache = False
+            bb.msg.note(1, bb.msg.domain.Cache, "Not using a cache. Set CACHE = <directory> to enable.")
+        else:
+            self.has_cache = True
+            self.cachefile = os.path.join(self.cachedir,"bb_cache.dat")
+            
+            bb.msg.debug(1, bb.msg.domain.Cache, "Using cache in '%s'" % self.cachedir)
+            try:
+                os.stat( self.cachedir )
+            except OSError:
+                bb.mkdirhier( self.cachedir )
+
+        if not self.has_cache:
+            return            
+
+        # If any of configuration.data's dependencies are newer than the
+        # cache there isn't even any point in loading it...
+        newest_mtime = 0
+        deps = bb.data.getVar("__depends", cooker.configuration.data, True)
+        for f,old_mtime in deps:
+            if old_mtime > newest_mtime:
+                newest_mtime = old_mtime
+
+        if bb.parse.cached_mtime_noerror(self.cachefile) >= newest_mtime:
+            try:
+                p = pickle.Unpickler(file(self.cachefile, "rb"))
+                self.depends_cache, version_data = p.load()
+                if version_data['CACHE_VER'] != __cache_version__:
+                    raise ValueError, 'Cache Version Mismatch'
+                if version_data['BITBAKE_VER'] != bb.__version__:
+                    raise ValueError, 'Bitbake Version Mismatch'
+            except EOFError:
+                bb.msg.note(1, bb.msg.domain.Cache, "Truncated cache found, rebuilding...")
+                self.depends_cache = {}
+            except:
+                bb.msg.note(1, bb.msg.domain.Cache, "Invalid cache found, rebuilding...")
+                self.depends_cache = {}
+        else:
+            bb.msg.note(1, bb.msg.domain.Cache, "Out of date cache found, rebuilding...")
+
+    def getVar(self, var, fn, exp = 0):
+        """
+        Gets the value of a variable
+        (similar to getVar in the data class)
+        
+        There are two scenarios:
+          1. We have cached data - serve from depends_cache[fn]
+          2. We're learning what data to cache - serve from data 
+             backend but add a copy of the data to the cache.
+        """
+        if fn in self.clean:
+            return self.depends_cache[fn][var]
+
+        if not fn in self.depends_cache:
+            self.depends_cache[fn] = {}
+
+        if fn != self.data_fn:
+            # We're trying to access data in the cache which doesn't exist
+            # yet setData hasn't been called to setup the right access. Very bad.
+            bb.msg.error(bb.msg.domain.Cache, "Parsing error data_fn %s and fn %s don't match" % (self.data_fn, fn))
+
+        self.cacheclean = False
+        result = bb.data.getVar(var, self.data, exp)
+        self.depends_cache[fn][var] = result
+        return result
+
+    def setData(self, fn, data):
+        """
+        Called to prime bb_cache ready to learn which variables to cache.
+        Will be followed by calls to self.getVar which aren't cached
+        but can be fulfilled from self.data.
+        """
+        self.data_fn = fn
+        self.data = data
+
+        # Make sure __depends makes the depends_cache
+        self.getVar("__depends", fn, True)
+        self.depends_cache[fn]["CACHETIMESTAMP"] = bb.parse.cached_mtime(fn)
+
+    def loadDataFull(self, fn, cfgData):
+        """
+        Return a complete set of data for fn.
+        To do this, we need to parse the file.
+        """
+        bb.msg.debug(1, bb.msg.domain.Cache, "Parsing %s (full)" % fn)
+
+        bb_data, skipped = self.load_bbfile(fn, cfgData)
+        return bb_data
+
+    def loadData(self, fn, cfgData):
+        """
+        Load a subset of data for fn.
+        If the cached data is valid we do nothing,
+        To do this, we need to parse the file and set the system
+        to record the variables accessed.
+        Return the cache status and whether the file was skipped when parsed
+        """
+        if fn not in self.checked:
+            self.cacheValidUpdate(fn)
+        if self.cacheValid(fn):
+            if "SKIPPED" in self.depends_cache[fn]:
+                return True, True
+            return True, False
+
+        bb.msg.debug(1, bb.msg.domain.Cache, "Parsing %s" % fn)
+
+        bb_data, skipped = self.load_bbfile(fn, cfgData)
+        self.setData(fn, bb_data)
+        return False, skipped
+
+    def cacheValid(self, fn):
+        """
+        Is the cache valid for fn?
+        Fast version, no timestamps checked.
+        """
+        # Is cache enabled?
+        if not self.has_cache:
+            return False
+        if fn in self.clean:
+            return True
+        return False
+
+    def cacheValidUpdate(self, fn):
+        """
+        Is the cache valid for fn?
+        Make thorough (slower) checks including timestamps.
+        """
+        # Is cache enabled?
+        if not self.has_cache:
+            return False
+
+        self.checked[fn] = ""
+
+        # Pretend we're clean so getVar works
+        self.clean[fn] = ""
+
+        # File isn't in depends_cache
+        if not fn in self.depends_cache:
+            bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s is not cached" % fn)
+            self.remove(fn)
+            return False
+
+        mtime = bb.parse.cached_mtime_noerror(fn) 
+
+        # Check file still exists
+        if mtime == 0:
+            bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s not longer exists" % fn)
+            self.remove(fn)
+            return False
+
+        # Check the file's timestamp
+        if mtime != self.getVar("CACHETIMESTAMP", fn, True):
+            bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s changed" % fn)
+            self.remove(fn)
+            return False
+
+        # Check dependencies are still valid
+        depends = self.getVar("__depends", fn, True)
+        if depends:
+            for f,old_mtime in depends:
+                fmtime = bb.parse.cached_mtime_noerror(f)
+                # Check if file still exists
+                if fmtime == 0:
+                    self.remove(fn)
+                    return False
+
+                if (fmtime != old_mtime):
+                    bb.msg.debug(2, bb.msg.domain.Cache, "Cache: %s's dependency %s changed" % (fn, f))
+                    self.remove(fn)
+                    return False
+
+        #bb.msg.debug(2, bb.msg.domain.Cache, "Depends Cache: %s is clean" % fn)
+        if not fn in self.clean:
+            self.clean[fn] = ""
+
+        return True
+
+    def skip(self, fn):
+        """
+        Mark a fn as skipped
+        Called from the parser
+        """
+        if not fn in self.depends_cache:
+            self.depends_cache[fn] = {}
+        self.depends_cache[fn]["SKIPPED"] = "1"
+
+    def remove(self, fn):
+        """
+        Remove a fn from the cache
+        Called from the parser in error cases
+        """
+        bb.msg.debug(1, bb.msg.domain.Cache, "Removing %s from cache" % fn)
+        if fn in self.depends_cache:
+            del self.depends_cache[fn]
+        if fn in self.clean:
+            del self.clean[fn]
+
+    def sync(self):
+        """
+        Save the cache
+        Called from the parser when complete (or exiting)
+        """
+
+        if not self.has_cache:
+            return
+
+        if self.cacheclean:
+            bb.msg.note(1, bb.msg.domain.Cache, "Cache is clean, not saving.")
+            return
+
+        version_data = {}
+        version_data['CACHE_VER'] = __cache_version__
+        version_data['BITBAKE_VER'] = bb.__version__
+
+        p = pickle.Pickler(file(self.cachefile, "wb" ), -1 )
+        p.dump([self.depends_cache, version_data])
+
+    def mtime(self, cachefile):
+        return bb.parse.cached_mtime_noerror(cachefile)
+
+    def handle_data(self, file_name, cacheData):
+        """
+        Save data we need into the cache 
+        """
+
+        pn       = self.getVar('PN', file_name, True)
+        pe       = self.getVar('PE', file_name, True) or "0"
+        pv       = self.getVar('PV', file_name, True)
+        pr       = self.getVar('PR', file_name, True)
+        dp       = int(self.getVar('DEFAULT_PREFERENCE', file_name, True) or "0")
+        depends   = bb.utils.explode_deps(self.getVar("DEPENDS", file_name, True) or "")
+        packages  = (self.getVar('PACKAGES', file_name, True) or "").split()
+        packages_dynamic = (self.getVar('PACKAGES_DYNAMIC', file_name, True) or "").split()
+        rprovides = (self.getVar("RPROVIDES", file_name, True) or "").split()
+
+        cacheData.task_deps[file_name] = self.getVar("_task_deps", file_name, True)
+
+        # build PackageName to FileName lookup table
+        if pn not in cacheData.pkg_pn:
+            cacheData.pkg_pn[pn] = []
+        cacheData.pkg_pn[pn].append(file_name)
+
+        cacheData.stamp[file_name] = self.getVar('STAMP', file_name, True)
+
+        # build FileName to PackageName lookup table
+        cacheData.pkg_fn[file_name] = pn
+        cacheData.pkg_pepvpr[file_name] = (pe,pv,pr)
+        cacheData.pkg_dp[file_name] = dp
+
+        provides = [pn]
+        for provide in (self.getVar("PROVIDES", file_name, True) or "").split():
+            if provide not in provides:
+                provides.append(provide)
+
+        # Build forward and reverse provider hashes
+        # Forward: virtual -> [filenames]
+        # Reverse: PN -> [virtuals]
+        if pn not in cacheData.pn_provides:
+            cacheData.pn_provides[pn] = []
+
+        cacheData.fn_provides[file_name] = provides
+        for provide in provides:
+            if provide not in cacheData.providers:
+                cacheData.providers[provide] = []
+            cacheData.providers[provide].append(file_name)
+            if not provide in cacheData.pn_provides[pn]:
+                cacheData.pn_provides[pn].append(provide)
+
+        cacheData.deps[file_name] = []
+        for dep in depends:
+            if not dep in cacheData.deps[file_name]:
+                cacheData.deps[file_name].append(dep)
+            if not dep in cacheData.all_depends:
+                cacheData.all_depends.append(dep)
+
+        # Build reverse hash for PACKAGES, so runtime dependencies 
+        # can be be resolved (RDEPENDS, RRECOMMENDS etc.)
+        for package in packages:
+            if not package in cacheData.packages:
+                cacheData.packages[package] = []
+            cacheData.packages[package].append(file_name)
+            rprovides += (self.getVar("RPROVIDES_%s" % package, file_name, 1) or "").split() 
+
+        for package in packages_dynamic:
+            if not package in cacheData.packages_dynamic:
+                cacheData.packages_dynamic[package] = []
+            cacheData.packages_dynamic[package].append(file_name)
+
+        for rprovide in rprovides:
+            if not rprovide in cacheData.rproviders:
+                cacheData.rproviders[rprovide] = []
+            cacheData.rproviders[rprovide].append(file_name)
+
+        # Build hash of runtime depends and rececommends
+
+        if not file_name in cacheData.rundeps:
+            cacheData.rundeps[file_name] = {}
+        if not file_name in cacheData.runrecs:
+            cacheData.runrecs[file_name] = {}
+
+        rdepends = self.getVar('RDEPENDS', file_name, True) or ""
+        rrecommends = self.getVar('RRECOMMENDS', file_name, True) or ""
+        for package in packages + [pn]:
+            if not package in cacheData.rundeps[file_name]:
+                cacheData.rundeps[file_name][package] = []
+            if not package in cacheData.runrecs[file_name]:
+                cacheData.runrecs[file_name][package] = []
+
+            cacheData.rundeps[file_name][package] = rdepends + " " + (self.getVar("RDEPENDS_%s" % package, file_name, True) or "")
+            cacheData.runrecs[file_name][package] = rrecommends + " " + (self.getVar("RRECOMMENDS_%s" % package, file_name, True) or "")
+
+        # Collect files we may need for possible world-dep
+        # calculations
+        if not self.getVar('BROKEN', file_name, True) and not self.getVar('EXCLUDE_FROM_WORLD', file_name, True):
+            cacheData.possible_world.append(file_name)
+
+
+    def load_bbfile( self, bbfile , config):
+        """
+        Load and parse one .bb build file
+        Return the data and whether parsing resulted in the file being skipped
+        """
+
+        import bb
+        from bb import utils, data, parse, debug, event, fatal
+
+        # expand tmpdir to include this topdir
+        data.setVar('TMPDIR', data.getVar('TMPDIR', config, 1) or "", config)
+        bbfile_loc = os.path.abspath(os.path.dirname(bbfile))
+        oldpath = os.path.abspath(os.getcwd())
+        if bb.parse.cached_mtime_noerror(bbfile_loc):
+            os.chdir(bbfile_loc)
+        bb_data = data.init_db(config)
+        try:
+            bb_data = parse.handle(bbfile, bb_data) # read .bb data
+            os.chdir(oldpath)
+            return bb_data, False
+        except bb.parse.SkipPackage:
+            os.chdir(oldpath)
+            return bb_data, True
+        except:
+            os.chdir(oldpath)
+            raise
+
+def init(cooker):
+    """
+    The Objective: Cache the minimum amount of data possible yet get to the 
+    stage of building packages (i.e. tryBuild) without reparsing any .bb files.
+
+    To do this, we intercept getVar calls and only cache the variables we see 
+    being accessed. We rely on the cache getVar calls being made for all 
+    variables bitbake might need to use to reach this stage. For each cached 
+    file we need to track:
+
+    * Its mtime
+    * The mtimes of all its dependencies
+    * Whether it caused a parse.SkipPackage exception
+
+    Files causing parsing errors are evicted from the cache.
+
+    """
+    return Cache(cooker)
+
+
+
+#============================================================================#
+# CacheData
+#============================================================================#
+class CacheData:
+    """
+    The data structures we compile from the cached data
+    """
+
+    def __init__(self):
+        """
+        Direct cache variables
+        (from Cache.handle_data)
+        """
+        self.providers   = {}
+        self.rproviders = {}
+        self.packages = {}
+        self.packages_dynamic = {}
+        self.possible_world = []
+        self.pkg_pn = {}
+        self.pkg_fn = {}
+        self.pkg_pepvpr = {}
+        self.pkg_dp = {}
+        self.pn_provides = {}
+        self.fn_provides = {}
+        self.all_depends = []
+        self.deps = {}
+        self.rundeps = {}
+        self.runrecs = {}
+        self.task_queues = {}
+        self.task_deps = {}
+        self.stamp = {}
+        self.preferred = {}
+
+        """
+        Indirect Cache variables
+        (set elsewhere)
+        """
+        self.ignored_dependencies = []
+        self.world_target = Set()
+        self.bbfile_priority = {}
+        self.bbfile_config_priorities = []
diff --git a/bitbake-dev/lib/bb/command.py b/bitbake-dev/lib/bb/command.py
new file mode 100644
index 0000000000..8384e89e55
--- /dev/null
+++ b/bitbake-dev/lib/bb/command.py
@@ -0,0 +1,211 @@
+"""
+BitBake 'Command' module
+
+Provide an interface to interact with the bitbake server through 'commands'
+"""
+
+# Copyright (C) 2006-2007  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+The bitbake server takes 'commands' from its UI/commandline. 
+Commands are either 'online' of 'offline' in nature. 
+Offline commands return data to the client in the form of events.
+Online commands must only return data through the function return value
+and must not trigger events, directly or indirectly.
+Commands are queued in a CommandQueue
+"""
+
+import bb
+
+offline_cmds = {}
+online_cmds = {}
+
+class Command:
+    """
+    A queue of 'offline' commands for bitbake
+    """
+    def __init__(self, cooker):
+
+        self.cooker = cooker
+        self.cmds_online = CommandsOnline()
+        self.cmds_offline = CommandsOffline()
+
+        # FIXME Add lock for this
+        self.currentOfflineCommand = None
+
+        for attr in CommandsOnline.__dict__:
+            command = attr[:].lower()
+            method = getattr(CommandsOnline, attr)
+            online_cmds[command] = (method)
+
+        for attr in CommandsOffline.__dict__:
+            command = attr[:].lower()
+            method = getattr(CommandsOffline, attr)
+            offline_cmds[command] = (method)
+
+    def runCommand(self, commandline):
+        try:
+            command = commandline.pop(0)
+            if command in CommandsOnline.__dict__:
+                # Can run online commands straight away            
+                return getattr(CommandsOnline, command)(self.cmds_online, self, commandline)
+            if self.currentOfflineCommand is not None:
+                return "Busy (%s in progress)" % self.currentOfflineCommand[0]
+            if command not in CommandsOffline.__dict__:
+                return "No such command"
+            self.currentOfflineCommand = (command, commandline)
+            return True
+        except:
+            import traceback
+            return traceback.format_exc()
+
+    def runOfflineCommand(self):
+        try:
+            if self.currentOfflineCommand is not None:
+                (command, options) = self.currentOfflineCommand
+                getattr(CommandsOffline, command)(self.cmds_offline, self, options)
+        except:
+            import traceback
+            self.finishOfflineCommand(traceback.format_exc())
+
+    def finishOfflineCommand(self, error = None):
+        if error:
+            bb.event.fire(bb.command.CookerCommandFailed(self.cooker.configuration.event_data, error))
+        else:
+            bb.event.fire(bb.command.CookerCommandCompleted(self.cooker.configuration.event_data))
+        self.currentOfflineCommand = None
+
+
+class CommandsOnline:
+    """
+    A class of online commands
+    These should run quickly so as not to hurt interactive performance.
+    These must not influence any running offline command.
+    """
+
+    def stateShutdown(self, command, params):
+        """
+        Trigger cooker 'shutdown' mode
+        """
+        command.cooker.cookerAction = bb.cooker.cookerShutdown
+
+    def stateStop(self, command, params):
+        """
+        Stop the cooker
+        """
+        command.cooker.cookerAction = bb.cooker.cookerStop
+
+    def getCmdLineAction(self, command, params):
+        """
+        Get any command parsed from the commandline
+        """
+        return command.cooker.commandlineAction
+
+    def readVariable(self, command, params):
+        """
+        Read the value of a variable from configuration.data
+        """
+        varname = params[0]
+        expand = True
+        if len(params) > 1:
+            expand = params[1]
+
+        return bb.data.getVar(varname, command.cooker.configuration.data, expand)
+
+class CommandsOffline:
+    """
+    A class of offline commands
+    These functions communicate via generated events.
+    Any function that requires metadata parsing should be here.
+    """
+
+    def buildFile(self, command, params):
+        """
+        Build a single specified .bb file
+        """
+        bfile = params[0]
+        task = params[1]
+
+        command.cooker.buildFile(bfile, task)
+
+    def buildTargets(self, command, params):
+        """
+        Build a set of targets
+        """
+        pkgs_to_build = params[0]
+
+        command.cooker.buildTargets(pkgs_to_build)
+
+    def generateDepTreeEvent(self, command, params):
+        """
+        Generate an event containing the dependency information
+        """
+        pkgs_to_build = params[0]
+
+        command.cooker.generateDepTreeEvent(pkgs_to_build)
+        command.finishOfflineCommand()
+
+    def generateDotGraph(self, command, params):
+        """
+        Dump dependency information to disk as .dot files
+        """
+        pkgs_to_build = params[0]
+
+        command.cooker.generateDotGraphFiles(pkgs_to_build)
+        command.finishOfflineCommand()
+
+    def showVersions(self, command, params):
+        """
+        Show the currently selected versions
+        """
+        command.cooker.showVersions()
+        command.finishOfflineCommand()
+
+    def showEnvironment(self, command, params):
+        """
+        Print the environment
+        """
+        bfile = params[0]
+        pkg = params[1]
+
+        command.cooker.showEnvironment(bfile, pkg)
+        command.finishOfflineCommand()
+
+    def parseFiles(self, command, params):
+        """
+        Parse the .bb files
+        """
+        command.cooker.updateCache()
+        command.finishOfflineCommand()
+
+#
+# Events
+#
+class CookerCommandCompleted(bb.event.Event):
+    """
+    Cooker command completed
+    """
+    def  __init__(self, data):
+        bb.event.Event.__init__(self, data)
+
+
+class CookerCommandFailed(bb.event.Event):
+    """
+    Cooker command completed
+    """
+    def  __init__(self, data, error):
+        bb.event.Event.__init__(self, data)
+        self.error = error
diff --git a/bitbake-dev/lib/bb/cooker.py b/bitbake-dev/lib/bb/cooker.py
new file mode 100644
index 0000000000..c92ad70a2c
--- /dev/null
+++ b/bitbake-dev/lib/bb/cooker.py
@@ -0,0 +1,941 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+# Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
+# Copyright (C) 2005        Holger Hans Peter Freyther
+# Copyright (C) 2005        ROAD GmbH
+# Copyright (C) 2006 - 2007 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import sys, os, getopt, glob, copy, os.path, re, time
+import bb
+from bb import utils, data, parse, event, cache, providers, taskdata, runqueue
+from bb import xmlrpcserver, command
+from sets import Set
+import itertools, sre_constants
+
+class MultipleMatches(Exception):
+    """
+    Exception raised when multiple file matches are found
+    """
+
+class ParsingErrorsFound(Exception):
+    """
+    Exception raised when parsing errors are found
+    """
+
+class NothingToBuild(Exception):
+    """
+    Exception raised when there is nothing to build
+    """
+
+
+# Different states cooker can be in
+cookerClean = 1
+cookerParsed = 2
+
+# Different action states the cooker can be in
+cookerRun = 1           # Cooker is running normally
+cookerShutdown = 2      # Active tasks should be brought to a controlled stop
+cookerStop = 3          # Stop, now!
+
+#============================================================================#
+# BBCooker
+#============================================================================#
+class BBCooker:
+    """
+    Manages one bitbake build run
+    """
+
+    def __init__(self, configuration):
+        self.status = None
+
+        self.cache = None
+        self.bb_cache = None
+
+        self.server = bb.xmlrpcserver.BitBakeXMLRPCServer(self)
+        #self.server.register_function(self.showEnvironment)
+
+        self.configuration = configuration
+
+        if self.configuration.verbose:
+            bb.msg.set_verbose(True)
+
+        if self.configuration.debug:
+            bb.msg.set_debug_level(self.configuration.debug)
+        else:
+            bb.msg.set_debug_level(0)
+
+        if self.configuration.debug_domains:
+            bb.msg.set_debug_domains(self.configuration.debug_domains)
+
+        self.configuration.data = bb.data.init()
+
+        for f in self.configuration.file:
+            self.parseConfigurationFile( f )
+
+        self.parseConfigurationFile( os.path.join( "conf", "bitbake.conf" ) )
+
+        if not self.configuration.cmd:
+            self.configuration.cmd = bb.data.getVar("BB_DEFAULT_TASK", self.configuration.data, True) or "build"
+
+        bbpkgs = bb.data.getVar('BBPKGS', self.configuration.data, True)
+        if bbpkgs:
+            self.configuration.pkgs_to_build.extend(bbpkgs.split())
+
+        #
+        # Special updated configuration we use for firing events
+        #
+        self.configuration.event_data = bb.data.createCopy(self.configuration.data)
+        bb.data.update_data(self.configuration.event_data)
+
+        # TOSTOP must not be set or our children will hang when they output
+        fd = sys.stdout.fileno()
+        if os.isatty(fd):
+            import termios
+            tcattr = termios.tcgetattr(fd)
+            if tcattr[3] & termios.TOSTOP:
+                bb.msg.note(1, bb.msg.domain.Build, "The terminal had the TOSTOP bit set, clearing...")
+                tcattr[3] = tcattr[3] & ~termios.TOSTOP
+                termios.tcsetattr(fd, termios.TCSANOW, tcattr)
+
+        # Change nice level if we're asked to
+        nice = bb.data.getVar("BB_NICE_LEVEL", self.configuration.data, True)
+        if nice:
+            curnice = os.nice(0)
+            nice = int(nice) - curnice
+            bb.msg.note(2, bb.msg.domain.Build, "Renice to %s " % os.nice(nice))
+ 
+        # Parse any commandline into actions
+        if self.configuration.show_environment:
+            self.commandlineAction = None
+
+            if 'world' in self.configuration.pkgs_to_build:
+                bb.error("'world' is not a valid target for --environment.")
+            elif len(self.configuration.pkgs_to_build) > 1:
+                bb.error("Only one target can be used with the --environment option.")
+            elif self.configuration.buildfile and len(self.configuration.pkgs_to_build) > 0:
+                bb.error("No target should be used with the --environment and --buildfile options.")
+            else:
+                self.commandlineAction = ["showEnvironment", self.configuration.buildfile, self.configuration.pkgs_to_build]
+        elif self.configuration.buildfile is not None:
+            self.commandlineAction = ["buildFile", self.configuration.buildfile, self.configuration.cmd]
+        elif self.configuration.show_versions:
+            self.commandlineAction = ["showVersions"]
+        elif self.configuration.parse_only:
+            self.commandlineAction = ["parseFiles"]
+        elif self.configuration.dot_graph:
+            if self.configuration.pkgs_to_build:
+                self.commandlineAction = ["generateDotGraph", self.configuration.pkgs_to_build]
+            else:
+                self.commandlineAction = None
+                bb.error("Please specify a package name for dependency graph generation.")
+        else:
+            if self.configuration.pkgs_to_build:
+                self.commandlineAction = ["buildTargets", self.configuration.pkgs_to_build]
+            else:
+                self.commandlineAction = None
+                bb.error("Nothing to do.  Use 'bitbake world' to build everything, or run 'bitbake --help' for usage information.")
+
+        # FIXME - implement
+        #if self.configuration.interactive:
+        #    self.interactiveMode()
+
+        self.command = bb.command.Command(self)
+        self.cookerIdle = True
+        self.cookerState = cookerClean
+        self.cookerAction = cookerRun
+        self.server.register_idle_function(self.runCommands, self)
+
+
+    def runCommands(self, server, data, abort):
+        """
+        Run any queued offline command
+        This is done by the idle handler so it runs in true context rather than
+        tied to any UI.
+        """
+        if self.cookerIdle and not abort:
+            self.command.runOfflineCommand()
+
+        # Always reschedule
+        return True
+
+    def tryBuildPackage(self, fn, item, task, the_data):
+        """
+        Build one task of a package, optionally build following task depends
+        """
+        bb.event.fire(bb.event.PkgStarted(item, the_data))
+        try:
+            if not self.configuration.dry_run:
+                bb.build.exec_task('do_%s' % task, the_data)
+            bb.event.fire(bb.event.PkgSucceeded(item, the_data))
+            return True
+        except bb.build.FuncFailed:
+            bb.msg.error(bb.msg.domain.Build, "task stack execution failed")
+            bb.event.fire(bb.event.PkgFailed(item, the_data))
+            raise
+        except bb.build.EventException, e:
+            event = e.args[1]
+            bb.msg.error(bb.msg.domain.Build, "%s event exception, aborting" % bb.event.getName(event))
+            bb.event.fire(bb.event.PkgFailed(item, the_data))
+            raise
+
+    def tryBuild(self, fn):
+        """
+        Build a provider and its dependencies. 
+        build_depends is a list of previous build dependencies (not runtime)
+        If build_depends is empty, we're dealing with a runtime depends
+        """
+
+        the_data = self.bb_cache.loadDataFull(fn, self.configuration.data)
+
+        item = self.status.pkg_fn[fn]
+
+        #if bb.build.stamp_is_current('do_%s' % self.configuration.cmd, the_data):
+        #    return True
+
+        return self.tryBuildPackage(fn, item, self.configuration.cmd, the_data)
+
+    def showVersions(self):
+
+        # Need files parsed
+        self.updateCache()
+
+        pkg_pn = self.status.pkg_pn
+        preferred_versions = {}
+        latest_versions = {}
+
+        # Sort by priority
+        for pn in pkg_pn.keys():
+            (last_ver,last_file,pref_ver,pref_file) = bb.providers.findBestProvider(pn, self.configuration.data, self.status)
+            preferred_versions[pn] = (pref_ver, pref_file)
+            latest_versions[pn] = (last_ver, last_file)
+
+        pkg_list = pkg_pn.keys()
+        pkg_list.sort()
+
+        bb.msg.plain("%-35s %25s %25s" % ("Package Name", "Latest Version", "Preferred Version"))
+        bb.msg.plain("%-35s %25s %25s\n" % ("============", "==============", "================="))
+
+        for p in pkg_list:
+            pref = preferred_versions[p]
+            latest = latest_versions[p]
+
+            prefstr = pref[0][0] + ":" + pref[0][1] + '-' + pref[0][2]
+            lateststr = latest[0][0] + ":" + latest[0][1] + "-" + latest[0][2]
+
+            if pref == latest:
+                prefstr = ""
+
+            bb.msg.plain("%-35s %25s %25s" % (p, lateststr, prefstr))
+
+    def showEnvironment(self, buildfile = None, pkgs_to_build = []):
+        """
+        Show the outer or per-package environment
+        """
+        fn = None
+        envdata = None
+
+        if buildfile:
+            self.cb = None
+            self.bb_cache = bb.cache.init(self)
+            fn = self.matchFile(buildfile)
+        elif len(pkgs_to_build) == 1:
+            self.updateCache()
+
+            localdata = data.createCopy(self.configuration.data)
+            bb.data.update_data(localdata)
+            bb.data.expandKeys(localdata)
+
+            taskdata = bb.taskdata.TaskData(self.configuration.abort)
+            taskdata.add_provider(localdata, self.status, pkgs_to_build[0])
+            taskdata.add_unresolved(localdata, self.status)
+
+            targetid = taskdata.getbuild_id(pkgs_to_build[0])
+            fnid = taskdata.build_targets[targetid][0]
+            fn = taskdata.fn_index[fnid]
+        else:
+            envdata = self.configuration.data
+
+        if fn:
+            try:
+                envdata = self.bb_cache.loadDataFull(fn, self.configuration.data)
+            except IOError, e:
+                bb.msg.error(bb.msg.domain.Parsing, "Unable to read %s: %s" % (fn, e))
+                raise
+            except Exception, e:
+                bb.msg.error(bb.msg.domain.Parsing, "%s" % e)
+                raise
+
+        class dummywrite:
+            def __init__(self):
+                self.writebuf = ""
+            def write(self, output):
+                self.writebuf = self.writebuf + output
+
+        # emit variables and shell functions
+        try:
+            data.update_data(envdata)
+            wb = dummywrite()
+            data.emit_env(wb, envdata, True)
+            bb.msg.plain(wb.writebuf)
+        except Exception, e:
+            bb.msg.fatal(bb.msg.domain.Parsing, "%s" % e)
+        # emit the metadata which isnt valid shell
+        data.expandKeys(envdata)
+        for e in envdata.keys():
+            if data.getVarFlag( e, 'python', envdata ):
+                bb.msg.plain("\npython %s () {\n%s}\n" % (e, data.getVar(e, envdata, 1)))
+
+    def generateDepTreeData(self, pkgs_to_build):
+        """
+        Create a dependency tree of pkgs_to_build, returning the data.
+        """
+
+        # Need files parsed
+        self.updateCache()
+
+        pkgs_to_build = self.checkPackages(pkgs_to_build)
+
+        localdata = data.createCopy(self.configuration.data)
+        bb.data.update_data(localdata)
+        bb.data.expandKeys(localdata)
+        taskdata = bb.taskdata.TaskData(self.configuration.abort)
+
+        runlist = []
+        for k in pkgs_to_build:
+            taskdata.add_provider(localdata, self.status, k)
+            runlist.append([k, "do_%s" % self.configuration.cmd])
+        taskdata.add_unresolved(localdata, self.status)
+
+        rq = bb.runqueue.RunQueue(self, self.configuration.data, self.status, taskdata, runlist)
+        rq.prepare_runqueue()
+
+        seen_fnids = []  
+        depend_tree = {}
+        depend_tree["depends"] = {}
+        depend_tree["tdepends"] = {}
+        depend_tree["pn"] = {}
+        depend_tree["rdepends-pn"] = {}
+        depend_tree["packages"] = {}
+        depend_tree["rdepends-pkg"] = {}
+        depend_tree["rrecs-pkg"] = {}
+
+        for task in range(len(rq.runq_fnid)):
+            taskname = rq.runq_task[task]
+            fnid = rq.runq_fnid[task]
+            fn = taskdata.fn_index[fnid]
+            pn = self.status.pkg_fn[fn]
+            version  = "%s:%s-%s" % self.status.pkg_pepvpr[fn]
+            if pn not in depend_tree["pn"]:
+                depend_tree["pn"][pn] = {}
+                depend_tree["pn"][pn]["filename"] = fn
+                depend_tree["pn"][pn]["version"] = version
+            for dep in rq.runq_depends[task]:
+                depfn = taskdata.fn_index[rq.runq_fnid[dep]]
+                deppn = self.status.pkg_fn[depfn]
+                dotname = "%s.%s" % (pn, rq.runq_task[task])
+                if not dotname in depend_tree["tdepends"]:
+                    depend_tree["tdepends"][dotname] = []
+                depend_tree["tdepends"][dotname].append("%s.%s" % (deppn, rq.runq_task[dep]))
+            if fnid not in seen_fnids:
+                seen_fnids.append(fnid)
+                packages = []
+
+                depend_tree["depends"][pn] = []
+                for dep in taskdata.depids[fnid]:
+                    depend_tree["depends"][pn].append(taskdata.build_names_index[dep])
+
+                depend_tree["rdepends-pn"][pn] = []
+                for rdep in taskdata.rdepids[fnid]:
+                        depend_tree["rdepends-pn"][pn].append(taskdata.run_names_index[rdep])
+
+                rdepends = self.status.rundeps[fn]
+                for package in rdepends:
+                    depend_tree["rdepends-pkg"][package] = []
+                    for rdepend in rdepends[package]:
+                        depend_tree["rdepends-pkg"][package].append(rdepend)
+                    packages.append(package)
+
+                rrecs = self.status.runrecs[fn]
+                for package in rrecs:
+                    depend_tree["rrecs-pkg"][package] = []
+                    for rdepend in rrecs[package]:
+                        depend_tree["rrecs-pkg"][package].append(rdepend)
+                    if not package in packages:
+                        packages.append(package)
+
+                for package in packages:
+                    if package not in depend_tree["packages"]:
+                        depend_tree["packages"][package] = {}
+                        depend_tree["packages"][package]["pn"] = pn
+                        depend_tree["packages"][package]["filename"] = fn
+                        depend_tree["packages"][package]["version"] = version
+
+        return depend_tree
+
+
+    def generateDepTreeEvent(self, pkgs_to_build):
+        """
+        Create a task dependency graph of pkgs_to_build.
+        Generate an event with the result
+        """
+        depgraph = self.generateDepTreeData(pkgs_to_build)
+        bb.event.fire(bb.event.DepTreeGenerated(self.configuration.data, depgraph))
+
+    def generateDotGraphFiles(self, pkgs_to_build):
+        """
+        Create a task dependency graph of pkgs_to_build.
+        Save the result to a set of .dot files.
+        """
+
+        depgraph = self.generateDepTreeData(pkgs_to_build)
+
+        # Prints a flattened form of package-depends below where subpackages of a package are merged into the main pn
+        depends_file = file('pn-depends.dot', 'w' )
+        print >> depends_file, "digraph depends {"
+        for pn in depgraph["pn"]:
+            fn = depgraph["pn"][pn]["filename"]
+            version = depgraph["pn"][pn]["version"]
+            print >> depends_file, '"%s" [label="%s %s\\n%s"]' % (pn, pn, version, fn)
+        for pn in depgraph["depends"]:
+            for depend in depgraph["depends"][pn]:
+                print >> depends_file, '"%s" -> "%s"' % (pn, depend)
+        for pn in depgraph["rdepends-pn"]:
+            for rdepend in depgraph["rdepends-pn"][pn]:
+                print >> depends_file, '"%s" -> "%s" [style=dashed]' % (pn, rdepend)
+        print >> depends_file,  "}"
+        bb.msg.plain("PN dependencies saved to 'pn-depends.dot'")
+
+        depends_file = file('package-depends.dot', 'w' )
+        print >> depends_file, "digraph depends {"
+        for package in depgraph["packages"]:
+            pn = depgraph["packages"][package]["pn"]
+            fn = depgraph["packages"][package]["filename"]
+            version = depgraph["packages"][package]["version"]
+            if package == pn:
+                print >> depends_file, '"%s" [label="%s %s\\n%s"]' % (pn, pn, version, fn)
+            else:
+                print >> depends_file, '"%s" [label="%s(%s) %s\\n%s"]' % (package, package, pn, version, fn)
+            for depend in depgraph["depends"][pn]:
+                print >> depends_file, '"%s" -> "%s"' % (package, depend)
+        for package in depgraph["rdepends-pkg"]:
+            for rdepend in depgraph["rdepends-pkg"][package]:
+                print >> depends_file, '"%s" -> "%s" [style=dashed]' % (package, rdepend)
+        for package in depgraph["rrecs-pkg"]:
+            for rdepend in depgraph["rrecs-pkg"][package]:
+                print >> depends_file, '"%s" -> "%s" [style=dashed]' % (package, rdepend)
+        print >> depends_file,  "}"
+        bb.msg.plain("Package dependencies saved to 'package-depends.dot'")
+
+        tdepends_file = file('task-depends.dot', 'w' )
+        print >> tdepends_file, "digraph depends {"
+        for task in depgraph["tdepends"]:
+            (pn, taskname) = task.rsplit(".", 1)
+            fn = depgraph["pn"][pn]["filename"]
+            version = depgraph["pn"][pn]["version"]
+            print >> tdepends_file, '"%s.%s" [label="%s %s\\n%s\\n%s"]' % (pn, taskname, pn, taskname, version, fn)
+            for dep in depgraph["tdepends"][task]:
+                print >> tdepends_file, '"%s" -> "%s"' % (task, dep)
+        print >> tdepends_file,  "}"
+        bb.msg.plain("Task dependencies saved to 'task-depends.dot'")
+
+    def buildDepgraph( self ):
+        all_depends = self.status.all_depends
+        pn_provides = self.status.pn_provides
+
+        localdata = data.createCopy(self.configuration.data)
+        bb.data.update_data(localdata)
+        bb.data.expandKeys(localdata)
+
+        def calc_bbfile_priority(filename):
+            for (regex, pri) in self.status.bbfile_config_priorities:
+                if regex.match(filename):
+                    return pri
+            return 0
+
+        # Handle PREFERRED_PROVIDERS
+        for p in (bb.data.getVar('PREFERRED_PROVIDERS', localdata, 1) or "").split():
+            try:
+                (providee, provider) = p.split(':')
+            except:
+                bb.msg.fatal(bb.msg.domain.Provider, "Malformed option in PREFERRED_PROVIDERS variable: %s" % p)
+                continue
+            if providee in self.status.preferred and self.status.preferred[providee] != provider:
+                bb.msg.error(bb.msg.domain.Provider, "conflicting preferences for %s: both %s and %s specified" % (providee, provider, self.status.preferred[providee]))
+            self.status.preferred[providee] = provider
+
+        # Calculate priorities for each file
+        for p in self.status.pkg_fn.keys():
+            self.status.bbfile_priority[p] = calc_bbfile_priority(p)
+
+    def buildWorldTargetList(self):
+        """
+         Build package list for "bitbake world"
+        """
+        all_depends = self.status.all_depends
+        pn_provides = self.status.pn_provides
+        bb.msg.debug(1, bb.msg.domain.Parsing, "collating packages for \"world\"")
+        for f in self.status.possible_world:
+            terminal = True
+            pn = self.status.pkg_fn[f]
+
+            for p in pn_provides[pn]:
+                if p.startswith('virtual/'):
+                    bb.msg.debug(2, bb.msg.domain.Parsing, "World build skipping %s due to %s provider starting with virtual/" % (f, p))
+                    terminal = False
+                    break
+                for pf in self.status.providers[p]:
+                    if self.status.pkg_fn[pf] != pn:
+                        bb.msg.debug(2, bb.msg.domain.Parsing, "World build skipping %s due to both us and %s providing %s" % (f, pf, p))
+                        terminal = False
+                        break
+            if terminal:
+                self.status.world_target.add(pn)
+
+            # drop reference count now
+            self.status.possible_world = None
+            self.status.all_depends    = None
+
+    def interactiveMode( self ):
+        """Drop off into a shell"""
+        try:
+            from bb import shell
+        except ImportError, details:
+            bb.msg.fatal(bb.msg.domain.Parsing, "Sorry, shell not available (%s)" % details )
+        else:
+            shell.start( self )
+
+    def parseConfigurationFile( self, afile ):
+        try:
+            self.configuration.data = bb.parse.handle( afile, self.configuration.data )
+
+            # Handle any INHERITs and inherit the base class
+            inherits  = ["base"] + (bb.data.getVar('INHERIT', self.configuration.data, True ) or "").split()
+            for inherit in inherits:
+                self.configuration.data = bb.parse.handle(os.path.join('classes', '%s.bbclass' % inherit), self.configuration.data, True )
+
+            # Nomally we only register event handlers at the end of parsing .bb files
+            # We register any handlers we've found so far here...
+            for var in data.getVar('__BBHANDLERS', self.configuration.data) or []:
+                bb.event.register(var,bb.data.getVar(var, self.configuration.data))
+
+            bb.fetch.fetcher_init(self.configuration.data)
+
+            bb.event.fire(bb.event.ConfigParsed(self.configuration.data))
+
+        except IOError, e:
+            bb.msg.fatal(bb.msg.domain.Parsing, "Error when parsing %s: %s" % (afile, str(e)))
+        except IOError:
+            bb.msg.fatal(bb.msg.domain.Parsing, "Unable to open %s" % afile )
+        except bb.parse.ParseError, details:
+            bb.msg.fatal(bb.msg.domain.Parsing, "Unable to parse %s (%s)" % (afile, details) )
+
+    def handleCollections( self, collections ):
+        """Handle collections"""
+        if collections:
+            collection_list = collections.split()
+            for c in collection_list:
+                regex = bb.data.getVar("BBFILE_PATTERN_%s" % c, self.configuration.data, 1)
+                if regex == None:
+                    bb.msg.error(bb.msg.domain.Parsing, "BBFILE_PATTERN_%s not defined" % c)
+                    continue
+                priority = bb.data.getVar("BBFILE_PRIORITY_%s" % c, self.configuration.data, 1)
+                if priority == None:
+                    bb.msg.error(bb.msg.domain.Parsing, "BBFILE_PRIORITY_%s not defined" % c)
+                    continue
+                try:
+                    cre = re.compile(regex)
+                except re.error:
+                    bb.msg.error(bb.msg.domain.Parsing, "BBFILE_PATTERN_%s \"%s\" is not a valid regular expression" % (c, regex))
+                    continue
+                try:
+                    pri = int(priority)
+                    self.status.bbfile_config_priorities.append((cre, pri))
+                except ValueError:
+                    bb.msg.error(bb.msg.domain.Parsing, "invalid value for BBFILE_PRIORITY_%s: \"%s\"" % (c, priority))
+
+    def buildSetVars(self):
+        """
+        Setup any variables needed before starting a build
+        """
+        if not bb.data.getVar("BUILDNAME", self.configuration.data):
+            bb.data.setVar("BUILDNAME", os.popen('date +%Y%m%d%H%M').readline().strip(), self.configuration.data)
+        bb.data.setVar("BUILDSTART", time.strftime('%m/%d/%Y %H:%M:%S',time.gmtime()), self.configuration.data)
+
+    def matchFiles(self, buildfile):
+        """
+        Find the .bb files which match the expression in 'buildfile'.
+        """
+
+        bf = os.path.abspath(buildfile)
+        try:
+            os.stat(bf)
+            return [bf]
+        except OSError:
+            (filelist, masked) = self.collect_bbfiles()
+            regexp = re.compile(buildfile)
+            matches = []
+            for f in filelist:
+                if regexp.search(f) and os.path.isfile(f):
+                    bf = f
+                    matches.append(f)
+            return matches
+
+    def matchFile(self, buildfile):
+        """
+        Find the .bb file which matches the expression in 'buildfile'.
+        Raise an error if multiple files
+        """
+        matches = self.matchFiles(buildfile)
+        if len(matches) != 1:
+            bb.msg.error(bb.msg.domain.Parsing, "Unable to match %s (%s matches found):" % (buildfile, len(matches)))
+            for f in matches:
+                bb.msg.error(bb.msg.domain.Parsing, "    %s" % f)
+            raise MultipleMatches
+        return matches[0]
+
+    def buildFile(self, buildfile, task):
+        """
+        Build the file matching regexp buildfile
+        """
+
+        fn = self.matchFile(buildfile)
+        self.buildSetVars()
+
+        # Load data into the cache for fn
+        self.bb_cache = bb.cache.init(self)
+        self.bb_cache.loadData(fn, self.configuration.data)      
+
+        # Parse the loaded cache data
+        self.status = bb.cache.CacheData()
+        self.bb_cache.handle_data(fn, self.status)  
+
+        # Tweak some variables
+        item = self.bb_cache.getVar('PN', fn, True)
+        self.status.ignored_dependencies = Set()
+        self.status.bbfile_priority[fn] = 1
+
+        # Remove external dependencies
+        self.status.task_deps[fn]['depends'] = {}
+        self.status.deps[fn] = []
+        self.status.rundeps[fn] = []
+        self.status.runrecs[fn] = []
+
+        # Remove stamp for target if force mode active
+        if self.configuration.force:
+            bb.msg.note(2, bb.msg.domain.RunQueue, "Remove stamp %s, %s" % (task, fn))
+            bb.build.del_stamp('do_%s' % task, self.status, fn)
+
+        # Setup taskdata structure
+        taskdata = bb.taskdata.TaskData(self.configuration.abort)
+        taskdata.add_provider(self.configuration.data, self.status, item)
+
+        buildname = bb.data.getVar("BUILDNAME", self.configuration.data)
+        bb.event.fire(bb.event.BuildStarted(buildname, [item], self.configuration.event_data))
+
+        # Execute the runqueue
+        runlist = [[item, "do_%s" % self.configuration.cmd]]
+
+        rq = bb.runqueue.RunQueue(self, self.configuration.data, self.status, taskdata, runlist)
+
+        def buildFileIdle(server, rq, abort):
+
+            if abort or self.cookerAction == cookerStop:
+                rq.finish_runqueue(True)
+            elif self.cookerAction == cookerShutdown:
+                rq.finish_runqueue(False)
+            failures = 0
+            try:
+                retval = rq.execute_runqueue()
+            except runqueue.TaskFailure, fnids:
+                for fnid in fnids:
+                    bb.msg.error(bb.msg.domain.Build, "'%s' failed" % taskdata.fn_index[fnid])
+                    failures = failures + 1
+                retval = False
+            if not retval:
+                self.cookerIdle = True
+                self.command.finishOfflineCommand()
+                bb.event.fire(bb.event.BuildCompleted(buildname, targets, self.configuration.event_data, failures))
+            return retval
+
+        self.cookerIdle = False
+        self.server.register_idle_function(buildFileIdle, rq)
+
+    def buildTargets(self, targets):
+        """
+        Attempt to build the targets specified
+        """
+
+        # Need files parsed
+        self.updateCache()
+
+        targets = self.checkPackages(targets)
+
+        def buildTargetsIdle(server, rq, abort):
+
+            if abort or self.cookerAction == cookerStop:
+                rq.finish_runqueue(True)
+            elif self.cookerAction == cookerShutdown:
+                rq.finish_runqueue(False)
+            failures = 0
+            try:
+                retval = rq.execute_runqueue()
+            except runqueue.TaskFailure, fnids:
+                for fnid in fnids:
+                    bb.msg.error(bb.msg.domain.Build, "'%s' failed" % taskdata.fn_index[fnid])
+                    failures = failures + 1
+                retval = False
+            if not retval:
+                self.cookerIdle = True
+                self.command.finishOfflineCommand()
+                bb.event.fire(bb.event.BuildCompleted(buildname, targets, self.configuration.event_data, failures))
+            return retval
+
+        self.buildSetVars()
+
+        buildname = bb.data.getVar("BUILDNAME", self.configuration.data)
+        bb.event.fire(bb.event.BuildStarted(buildname, targets, self.configuration.event_data))
+
+        localdata = data.createCopy(self.configuration.data)
+        bb.data.update_data(localdata)
+        bb.data.expandKeys(localdata)
+
+        taskdata = bb.taskdata.TaskData(self.configuration.abort)
+
+        runlist = []
+        for k in targets:
+            taskdata.add_provider(localdata, self.status, k)
+            runlist.append([k, "do_%s" % self.configuration.cmd])
+        taskdata.add_unresolved(localdata, self.status)
+
+        rq = bb.runqueue.RunQueue(self, self.configuration.data, self.status, taskdata, runlist)
+
+        self.cookerIdle = False
+        self.server.register_idle_function(buildTargetsIdle, rq)
+
+    def updateCache(self):
+
+        if self.cookerState == cookerParsed:
+            return
+
+        # Import Psyco if available and not disabled
+        import platform
+        if platform.machine() in ['i386', 'i486', 'i586', 'i686']:
+            if not self.configuration.disable_psyco:
+                try:
+                    import psyco
+                except ImportError:
+                    bb.msg.note(1, bb.msg.domain.Collection, "Psyco JIT Compiler (http://psyco.sf.net) not available. Install it to increase performance.")
+                else:
+                    psyco.bind( self.parse_bbfiles )
+            else:
+                bb.msg.note(1, bb.msg.domain.Collection, "You have disabled Psyco. This decreases performance.")
+
+        self.status = bb.cache.CacheData()
+
+        ignore = bb.data.getVar("ASSUME_PROVIDED", self.configuration.data, 1) or ""
+        self.status.ignored_dependencies = Set(ignore.split())
+
+        for dep in self.configuration.extra_assume_provided:
+            self.status.ignored_dependencies.add(dep)
+
+        self.handleCollections( bb.data.getVar("BBFILE_COLLECTIONS", self.configuration.data, 1) )
+
+        bb.msg.debug(1, bb.msg.domain.Collection, "collecting .bb files")
+        (filelist, masked) = self.collect_bbfiles()
+        self.parse_bbfiles(filelist, masked)
+        bb.msg.debug(1, bb.msg.domain.Collection, "parsing complete")
+
+        self.buildDepgraph()
+
+        self.cookerState = cookerParsed
+
+    def checkPackages(self, pkgs_to_build):
+
+        if len(pkgs_to_build) == 0:
+            raise NothingToBuild
+
+        if 'world' in pkgs_to_build:
+            self.buildWorldTargetList()
+            pkgs_to_build.remove('world')
+            for t in self.status.world_target:
+                pkgs_to_build.append(t)
+
+        return pkgs_to_build
+
+    def get_bbfiles( self, path = os.getcwd() ):
+        """Get list of default .bb files by reading out the current directory"""
+        contents = os.listdir(path)
+        bbfiles = []
+        for f in contents:
+            (root, ext) = os.path.splitext(f)
+            if ext == ".bb":
+                bbfiles.append(os.path.abspath(os.path.join(os.getcwd(),f)))
+        return bbfiles
+
+    def find_bbfiles( self, path ):
+        """Find all the .bb files in a directory"""
+        from os.path import join
+
+        found = []
+        for dir, dirs, files in os.walk(path):
+            for ignored in ('SCCS', 'CVS', '.svn'):
+                if ignored in dirs:
+                    dirs.remove(ignored)
+            found += [join(dir,f) for f in files if f.endswith('.bb')]
+
+        return found
+
+    def collect_bbfiles( self ):
+        """Collect all available .bb build files"""
+        parsed, cached, skipped, masked = 0, 0, 0, 0
+        self.bb_cache = bb.cache.init(self)
+
+        files = (data.getVar( "BBFILES", self.configuration.data, 1 ) or "").split()
+        data.setVar("BBFILES", " ".join(files), self.configuration.data)
+
+        if not len(files):
+            files = self.get_bbfiles()
+
+        if not len(files):
+            bb.msg.error(bb.msg.domain.Collection, "no files to build.")
+
+        newfiles = []
+        for f in files:
+            if os.path.isdir(f):
+                dirfiles = self.find_bbfiles(f)
+                if dirfiles:
+                    newfiles += dirfiles
+                    continue
+            newfiles += glob.glob(f) or [ f ]
+
+        bbmask = bb.data.getVar('BBMASK', self.configuration.data, 1)
+
+        if not bbmask:
+            return (newfiles, 0)
+
+        try:
+            bbmask_compiled = re.compile(bbmask)
+        except sre_constants.error:
+            bb.msg.fatal(bb.msg.domain.Collection, "BBMASK is not a valid regular expression.")
+
+        finalfiles = []
+        for i in xrange( len( newfiles ) ):
+            f = newfiles[i]
+            if bbmask and bbmask_compiled.search(f):
+                bb.msg.debug(1, bb.msg.domain.Collection, "skipping masked file %s" % f)
+                masked += 1
+                continue
+            finalfiles.append(f)
+
+        return (finalfiles, masked)
+
+    def parse_bbfiles(self, filelist, masked):
+        parsed, cached, skipped, error, total = 0, 0, 0, 0, len(filelist)
+        for i in xrange(total):
+            f = filelist[i]
+
+            #bb.msg.debug(1, bb.msg.domain.Collection, "parsing %s" % f)
+
+            # read a file's metadata
+            try:
+                fromCache, skip = self.bb_cache.loadData(f, self.configuration.data)
+                if skip:
+                    skipped += 1
+                    bb.msg.debug(2, bb.msg.domain.Collection, "skipping %s" % f)
+                    self.bb_cache.skip(f)
+                    continue
+                elif fromCache: cached += 1
+                else: parsed += 1
+                deps = None
+
+                # Disabled by RP as was no longer functional
+                # allow metadata files to add items to BBFILES
+                #data.update_data(self.pkgdata[f])
+                #addbbfiles = self.bb_cache.getVar('BBFILES', f, False) or None
+                #if addbbfiles:
+                #    for aof in addbbfiles.split():
+                #        if not files.count(aof):
+                #            if not os.path.isabs(aof):
+                #                aof = os.path.join(os.path.dirname(f),aof)
+                #            files.append(aof)
+
+                self.bb_cache.handle_data(f, self.status)
+
+            except IOError, e:
+                error += 1
+                self.bb_cache.remove(f)
+                bb.msg.error(bb.msg.domain.Collection, "opening %s: %s" % (f, e))
+                pass
+            except KeyboardInterrupt:
+                self.bb_cache.sync()
+                raise
+            except Exception, e:
+                error += 1
+                self.bb_cache.remove(f)
+                bb.msg.error(bb.msg.domain.Collection, "%s while parsing %s" % (e, f))
+            except:
+                self.bb_cache.remove(f)
+                raise
+            finally:
+                bb.event.fire(bb.event.ParseProgress(self.configuration.event_data, cached, parsed, skipped, masked, error, total))
+
+        self.bb_cache.sync()
+        if error > 0:
+             raise ParsingErrorsFound
+
+    def serve(self):
+
+        if self.configuration.profile:
+            try:
+                import cProfile as profile
+            except:
+                import profile
+
+            profile.runctx("self.server.serve_forever()", globals(), locals(), "profile.log")
+
+            # Redirect stdout to capture profile information
+            pout = open('profile.log.processed', 'w')
+            so = sys.stdout.fileno()
+            os.dup2(pout.fileno(), so)
+
+            import pstats
+            p = pstats.Stats('profile.log')
+            p.sort_stats('time')
+            p.print_stats()
+            p.print_callers()
+            p.sort_stats('cumulative')
+            p.print_stats()
+
+            os.dup2(so, pout.fileno())
+            pout.flush()
+            pout.close()
+        else:
+            self.server.serve_forever()
+        
+        bb.event.fire(CookerExit(self.configuration.event_data))
+        
+class CookerExit(bb.event.Event):
+    """
+    Notify clients of the Cooker shutdown
+    """
+
+    def __init__(self, d):
+        bb.event.Event.__init__(self, d)
+
diff --git a/bitbake-dev/lib/bb/daemonize.py b/bitbake-dev/lib/bb/daemonize.py
new file mode 100644
index 0000000000..6023c9ccd2
--- /dev/null
+++ b/bitbake-dev/lib/bb/daemonize.py
@@ -0,0 +1,189 @@
+"""

+Python Deamonizing helper

+

+Configurable daemon behaviors:

+

+   1.) The current working directory set to the "/" directory.

+   2.) The current file creation mode mask set to 0.

+   3.) Close all open files (1024). 

+   4.) Redirect standard I/O streams to "/dev/null".

+

+A failed call to fork() now raises an exception.

+

+References:

+   1) Advanced Programming in the Unix Environment: W. Richard Stevens

+   2) Unix Programming Frequently Asked Questions:

+         http://www.erlenstar.demon.co.uk/unix/faq_toc.html

+

+Modified to allow a function to be daemonized and return for 

+bitbake use by Richard Purdie

+"""

+

+__author__ = "Chad J. Schroeder"

+__copyright__ = "Copyright (C) 2005 Chad J. Schroeder"

+__version__ = "0.2"

+

+# Standard Python modules.

+import os               # Miscellaneous OS interfaces.

+import sys              # System-specific parameters and functions.

+

+# Default daemon parameters.

+# File mode creation mask of the daemon.

+UMASK = 0

+

+# Default maximum for the number of available file descriptors.

+MAXFD = 1024

+

+# The standard I/O file descriptors are redirected to /dev/null by default.

+if (hasattr(os, "devnull")):

+   REDIRECT_TO = os.devnull

+else:

+   REDIRECT_TO = "/dev/null"

+

+def createDaemon(function, logfile):

+   """

+   Detach a process from the controlling terminal and run it in the

+   background as a daemon, returning control to the caller.

+   """

+

+   try:

+      # Fork a child process so the parent can exit.  This returns control to

+      # the command-line or shell.  It also guarantees that the child will not

+      # be a process group leader, since the child receives a new process ID

+      # and inherits the parent's process group ID.  This step is required

+      # to insure that the next call to os.setsid is successful.

+      pid = os.fork()

+   except OSError, e:

+      raise Exception, "%s [%d]" % (e.strerror, e.errno)

+

+   if (pid == 0):       # The first child.

+      # To become the session leader of this new session and the process group

+      # leader of the new process group, we call os.setsid().  The process is

+      # also guaranteed not to have a controlling terminal.

+      os.setsid()

+

+      # Is ignoring SIGHUP necessary?

+      #

+      # It's often suggested that the SIGHUP signal should be ignored before

+      # the second fork to avoid premature termination of the process.  The

+      # reason is that when the first child terminates, all processes, e.g.

+      # the second child, in the orphaned group will be sent a SIGHUP.

+      #

+      # "However, as part of the session management system, there are exactly

+      # two cases where SIGHUP is sent on the death of a process:

+      #

+      #   1) When the process that dies is the session leader of a session that

+      #      is attached to a terminal device, SIGHUP is sent to all processes

+      #      in the foreground process group of that terminal device.

+      #   2) When the death of a process causes a process group to become

+      #      orphaned, and one or more processes in the orphaned group are

+      #      stopped, then SIGHUP and SIGCONT are sent to all members of the

+      #      orphaned group." [2]

+      #

+      # The first case can be ignored since the child is guaranteed not to have

+      # a controlling terminal.  The second case isn't so easy to dismiss.

+      # The process group is orphaned when the first child terminates and

+      # POSIX.1 requires that every STOPPED process in an orphaned process

+      # group be sent a SIGHUP signal followed by a SIGCONT signal.  Since the

+      # second child is not STOPPED though, we can safely forego ignoring the

+      # SIGHUP signal.  In any case, there are no ill-effects if it is ignored.

+      #

+      # import signal           # Set handlers for asynchronous events.

+      # signal.signal(signal.SIGHUP, signal.SIG_IGN)

+

+      try:

+         # Fork a second child and exit immediately to prevent zombies.  This

+         # causes the second child process to be orphaned, making the init

+         # process responsible for its cleanup.  And, since the first child is

+         # a session leader without a controlling terminal, it's possible for

+         # it to acquire one by opening a terminal in the future (System V-

+         # based systems).  This second fork guarantees that the child is no

+         # longer a session leader, preventing the daemon from ever acquiring

+         # a controlling terminal.

+         pid = os.fork()        # Fork a second child.

+      except OSError, e:

+         raise Exception, "%s [%d]" % (e.strerror, e.errno)

+

+      if (pid == 0):    # The second child.

+         # We probably don't want the file mode creation mask inherited from

+         # the parent, so we give the child complete control over permissions.

+         os.umask(UMASK)

+      else:

+         # Parent (the first child) of the second child.

+         os._exit(0)

+   else:

+      # exit() or _exit()?

+      # _exit is like exit(), but it doesn't call any functions registered

+      # with atexit (and on_exit) or any registered signal handlers.  It also

+      # closes any open file descriptors.  Using exit() may cause all stdio

+      # streams to be flushed twice and any temporary files may be unexpectedly

+      # removed.  It's therefore recommended that child branches of a fork()

+      # and the parent branch(es) of a daemon use _exit().

+      return

+

+   # Close all open file descriptors.  This prevents the child from keeping

+   # open any file descriptors inherited from the parent.  There is a variety

+   # of methods to accomplish this task.  Three are listed below.

+   #

+   # Try the system configuration variable, SC_OPEN_MAX, to obtain the maximum

+   # number of open file descriptors to close.  If it doesn't exists, use

+   # the default value (configurable).

+   #

+   # try:

+   #    maxfd = os.sysconf("SC_OPEN_MAX")

+   # except (AttributeError, ValueError):

+   #    maxfd = MAXFD

+   #

+   # OR

+   #

+   # if (os.sysconf_names.has_key("SC_OPEN_MAX")):

+   #    maxfd = os.sysconf("SC_OPEN_MAX")

+   # else:

+   #    maxfd = MAXFD

+   #

+   # OR

+   #

+   # Use the getrlimit method to retrieve the maximum file descriptor number

+   # that can be opened by this process.  If there is not limit on the

+   # resource, use the default value.

+   #

+   import resource              # Resource usage information.

+   maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]

+   if (maxfd == resource.RLIM_INFINITY):

+      maxfd = MAXFD

+  

+   # Iterate through and close all file descriptors.

+#   for fd in range(0, maxfd):

+#      try:

+#         os.close(fd)

+#      except OSError:  # ERROR, fd wasn't open to begin with (ignored)

+#         pass

+

+   # Redirect the standard I/O file descriptors to the specified file.  Since

+   # the daemon has no controlling terminal, most daemons redirect stdin,

+   # stdout, and stderr to /dev/null.  This is done to prevent side-effects

+   # from reads and writes to the standard I/O file descriptors.

+

+   # This call to open is guaranteed to return the lowest file descriptor,

+   # which will be 0 (stdin), since it was closed above.

+#   os.open(REDIRECT_TO, os.O_RDWR)     # standard input (0)

+

+   # Duplicate standard input to standard output and standard error.

+#   os.dup2(0, 1)                       # standard output (1)

+#   os.dup2(0, 2)                       # standard error (2)

+

+

+   si = file('/dev/null', 'r')

+   so = file(logfile, 'w')

+   se = so

+

+

+   # Replace those fds with our own

+   os.dup2(si.fileno(), sys.stdin.fileno())

+   os.dup2(so.fileno(), sys.stdout.fileno())

+   os.dup2(se.fileno(), sys.stderr.fileno())

+

+   function()

+

+   os._exit(0)

+

diff --git a/bitbake-dev/lib/bb/data.py b/bitbake-dev/lib/bb/data.py
new file mode 100644
index 0000000000..54b2615afb
--- /dev/null
+++ b/bitbake-dev/lib/bb/data.py
@@ -0,0 +1,570 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Data' implementations
+
+Functions for interacting with the data structure used by the
+BitBake build tools.
+
+The expandData and update_data are the most expensive
+operations. At night the cookie monster came by and
+suggested 'give me cookies on setting the variables and
+things will work out'. Taking this suggestion into account
+applying the skills from the not yet passed 'Entwurf und
+Analyse von Algorithmen' lecture and the cookie 
+monster seems to be right. We will track setVar more carefully
+to have faster update_data and expandKeys operations.
+
+This is a treade-off between speed and memory again but
+the speed is more critical here.
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2005        Holger Hans Peter Freyther
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+#Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import sys, os, re, time, types
+if sys.argv[0][-5:] == "pydoc":
+    path = os.path.dirname(os.path.dirname(sys.argv[1]))
+else:
+    path = os.path.dirname(os.path.dirname(sys.argv[0]))
+sys.path.insert(0,path)
+
+from bb import data_smart
+import bb
+
+_dict_type = data_smart.DataSmart
+
+def init():
+    return _dict_type()
+
+def init_db(parent = None):
+    if parent:
+        return parent.createCopy()
+    else:
+        return _dict_type()
+
+def createCopy(source):
+     """Link the source set to the destination
+     If one does not find the value in the destination set,
+     search will go on to the source set to get the value.
+     Value from source are copy-on-write. i.e. any try to
+     modify one of them will end up putting the modified value
+     in the destination set.
+     """
+     return source.createCopy()
+
+def initVar(var, d):
+    """Non-destructive var init for data structure"""
+    d.initVar(var)
+
+
+def setVar(var, value, d):
+    """Set a variable to a given value
+
+    Example:
+        >>> d = init()
+        >>> setVar('TEST', 'testcontents', d)
+        >>> print getVar('TEST', d)
+        testcontents
+    """
+    d.setVar(var,value)
+
+
+def getVar(var, d, exp = 0):
+    """Gets the value of a variable
+
+    Example:
+        >>> d = init()
+        >>> setVar('TEST', 'testcontents', d)
+        >>> print getVar('TEST', d)
+        testcontents
+    """
+    return d.getVar(var,exp)
+
+
+def renameVar(key, newkey, d):
+    """Renames a variable from key to newkey
+
+    Example:
+        >>> d = init()
+        >>> setVar('TEST', 'testcontents', d)
+        >>> renameVar('TEST', 'TEST2', d)
+        >>> print getVar('TEST2', d)
+        testcontents
+    """
+    d.renameVar(key, newkey)
+
+def delVar(var, d):
+    """Removes a variable from the data set
+
+    Example:
+        >>> d = init()
+        >>> setVar('TEST', 'testcontents', d)
+        >>> print getVar('TEST', d)
+        testcontents
+        >>> delVar('TEST', d)
+        >>> print getVar('TEST', d)
+        None
+    """
+    d.delVar(var)
+
+def setVarFlag(var, flag, flagvalue, d):
+    """Set a flag for a given variable to a given value
+
+    Example:
+        >>> d = init()
+        >>> setVarFlag('TEST', 'python', 1, d)
+        >>> print getVarFlag('TEST', 'python', d)
+        1
+    """
+    d.setVarFlag(var,flag,flagvalue)
+
+def getVarFlag(var, flag, d):
+    """Gets given flag from given var
+
+    Example:
+        >>> d = init()
+        >>> setVarFlag('TEST', 'python', 1, d)
+        >>> print getVarFlag('TEST', 'python', d)
+        1
+    """
+    return d.getVarFlag(var,flag)
+
+def delVarFlag(var, flag, d):
+    """Removes a given flag from the variable's flags
+
+    Example:
+        >>> d = init()
+        >>> setVarFlag('TEST', 'testflag', 1, d)
+        >>> print getVarFlag('TEST', 'testflag', d)
+        1
+        >>> delVarFlag('TEST', 'testflag', d)
+        >>> print getVarFlag('TEST', 'testflag', d)
+        None
+
+    """
+    d.delVarFlag(var,flag)
+
+def setVarFlags(var, flags, d):
+    """Set the flags for a given variable
+
+    Note:
+        setVarFlags will not clear previous
+        flags. Think of this method as
+        addVarFlags
+
+    Example:
+        >>> d = init()
+        >>> myflags = {}
+        >>> myflags['test'] = 'blah'
+        >>> setVarFlags('TEST', myflags, d)
+        >>> print getVarFlag('TEST', 'test', d)
+        blah
+    """
+    d.setVarFlags(var,flags)
+
+def getVarFlags(var, d):
+    """Gets a variable's flags
+
+    Example:
+        >>> d = init()
+        >>> setVarFlag('TEST', 'test', 'blah', d)
+        >>> print getVarFlags('TEST', d)['test']
+        blah
+    """
+    return d.getVarFlags(var)
+
+def delVarFlags(var, d):
+    """Removes a variable's flags
+
+    Example:
+        >>> data = init()
+        >>> setVarFlag('TEST', 'testflag', 1, data)
+        >>> print getVarFlag('TEST', 'testflag', data)
+        1
+        >>> delVarFlags('TEST', data)
+        >>> print getVarFlags('TEST', data)
+        None
+
+    """
+    d.delVarFlags(var)
+
+def keys(d):
+    """Return a list of keys in d
+
+    Example:
+        >>> d = init()
+        >>> setVar('TEST',  1, d)
+        >>> setVar('MOO' ,  2, d)
+        >>> setVarFlag('TEST', 'test', 1, d)
+        >>> keys(d)
+        ['TEST', 'MOO']
+    """
+    return d.keys()
+
+def getData(d):
+    """Returns the data object used"""
+    return d
+
+def setData(newData, d):
+    """Sets the data object to the supplied value"""
+    d = newData
+
+
+##
+## Cookie Monsters' query functions
+##
+def _get_override_vars(d, override):
+    """
+    Internal!!!
+
+    Get the Names of Variables that have a specific
+    override. This function returns a iterable
+    Set or an empty list
+    """
+    return []
+
+def _get_var_flags_triple(d):
+    """
+    Internal!!!
+
+    """
+    return []
+
+__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
+__expand_python_regexp__ = re.compile(r"\${@.+?}")
+
+def expand(s, d, varname = None):
+    """Variable expansion using the data store.
+
+    Example:
+        Standard expansion:
+        >>> d = init()
+        >>> setVar('A', 'sshd', d)
+        >>> print expand('/usr/bin/${A}', d)
+        /usr/bin/sshd
+
+        Python expansion:
+        >>> d = init()
+        >>> print expand('result: ${@37 * 72}', d)
+        result: 2664
+
+        Shell expansion:
+        >>> d = init()
+        >>> print expand('${TARGET_MOO}', d)
+        ${TARGET_MOO}
+        >>> setVar('TARGET_MOO', 'yupp', d)
+        >>> print expand('${TARGET_MOO}',d)
+        yupp
+        >>> setVar('SRC_URI', 'http://somebug.${TARGET_MOO}', d)
+        >>> delVar('TARGET_MOO', d)
+        >>> print expand('${SRC_URI}', d)
+        http://somebug.${TARGET_MOO}
+    """
+    return d.expand(s, varname)
+
+def expandKeys(alterdata, readdata = None):
+    if readdata == None:
+        readdata = alterdata
+
+    todolist = {}
+    for key in keys(alterdata):
+        if not '${' in key:
+            continue
+
+        ekey = expand(key, readdata)
+        if key == ekey:
+            continue
+        todolist[key] = ekey
+
+    # These two for loops are split for performance to maximise the 
+    # usefulness of the expand cache
+
+    for key in todolist:
+        ekey = todolist[key]
+        renameVar(key, ekey, alterdata)
+
+def expandData(alterdata, readdata = None):
+    """For each variable in alterdata, expand it, and update the var contents.
+       Replacements use data from readdata.
+
+    Example:
+        >>> a=init()
+        >>> b=init()
+        >>> setVar("dlmsg", "dl_dir is ${DL_DIR}", a)
+        >>> setVar("DL_DIR", "/path/to/whatever", b)
+        >>> expandData(a, b)
+        >>> print getVar("dlmsg", a)
+        dl_dir is /path/to/whatever
+       """
+    if readdata == None:
+        readdata = alterdata
+
+    for key in keys(alterdata):
+        val = getVar(key, alterdata)
+        if type(val) is not types.StringType:
+            continue
+        expanded = expand(val, readdata)
+#       print "key is %s, val is %s, expanded is %s" % (key, val, expanded)
+        if val != expanded:
+            setVar(key, expanded, alterdata)
+
+import os
+
+def inheritFromOS(d):
+    """Inherit variables from the environment."""
+#   fakeroot needs to be able to set these
+    non_inherit_vars = [ "LD_LIBRARY_PATH", "LD_PRELOAD" ]
+    for s in os.environ.keys():
+        if not s in non_inherit_vars:
+            try:
+                setVar(s, os.environ[s], d)
+                setVarFlag(s, 'matchesenv', '1', d)
+            except TypeError:
+                pass
+
+import sys
+
+def emit_var(var, o=sys.__stdout__, d = init(), all=False):
+    """Emit a variable to be sourced by a shell."""
+    if getVarFlag(var, "python", d):
+        return 0
+
+    export = getVarFlag(var, "export", d)
+    unexport = getVarFlag(var, "unexport", d)
+    func = getVarFlag(var, "func", d)
+    if not all and not export and not unexport and not func:
+        return 0
+
+    try:
+        if all:
+            oval = getVar(var, d, 0)
+        val = getVar(var, d, 1)
+    except KeyboardInterrupt:
+        raise
+    except:
+        excname = str(sys.exc_info()[0])
+        if excname == "bb.build.FuncFailed":
+            raise
+        o.write('# expansion of %s threw %s\n' % (var, excname))
+        return 0
+
+    if all:
+        o.write('# %s=%s\n' % (var, oval))
+
+    if type(val) is not types.StringType:
+        return 0
+
+    if (var.find("-") != -1 or var.find(".") != -1 or var.find('{') != -1 or var.find('}') != -1 or var.find('+') != -1) and not all:
+        return 0
+
+    varExpanded = expand(var, d)
+
+    if unexport:
+        o.write('unset %s\n' % varExpanded)
+        return 1
+
+    if getVarFlag(var, 'matchesenv', d):
+        return 0
+
+    val.rstrip()
+    if not val:
+        return 0
+
+    if func:
+        # NOTE: should probably check for unbalanced {} within the var
+        o.write("%s() {\n%s\n}\n" % (varExpanded, val))
+        return 1
+
+    if export:
+        o.write('export ')
+
+    # if we're going to output this within doublequotes,
+    # to a shell, we need to escape the quotes in the var
+    alter = re.sub('"', '\\"', val.strip())
+    o.write('%s="%s"\n' % (varExpanded, alter))
+    return 1
+
+
+def emit_env(o=sys.__stdout__, d = init(), all=False):
+    """Emits all items in the data store in a format such that it can be sourced by a shell."""
+
+    env = keys(d)
+
+    for e in env:
+        if getVarFlag(e, "func", d):
+            continue
+        emit_var(e, o, d, all) and o.write('\n')
+
+    for e in env:
+        if not getVarFlag(e, "func", d):
+            continue
+        emit_var(e, o, d) and o.write('\n')
+
+def update_data(d):
+    """Modifies the environment vars according to local overrides and commands.
+    Examples:
+        Appending to a variable:
+        >>> d = init()
+        >>> setVar('TEST', 'this is a', d)
+        >>> setVar('TEST_append', ' test', d)
+        >>> setVar('TEST_append', ' of the emergency broadcast system.', d)
+        >>> update_data(d)
+        >>> print getVar('TEST', d)
+        this is a test of the emergency broadcast system.
+
+        Prepending to a variable:
+        >>> setVar('TEST', 'virtual/libc', d)
+        >>> setVar('TEST_prepend', 'virtual/tmake ', d)
+        >>> setVar('TEST_prepend', 'virtual/patcher ', d)
+        >>> update_data(d)
+        >>> print getVar('TEST', d)
+        virtual/patcher virtual/tmake virtual/libc
+
+        Overrides:
+        >>> setVar('TEST_arm', 'target', d)
+        >>> setVar('TEST_ramses', 'machine', d)
+        >>> setVar('TEST_local', 'local', d)
+        >>> setVar('OVERRIDES', 'arm', d)
+
+        >>> setVar('TEST', 'original', d)
+        >>> update_data(d)
+        >>> print getVar('TEST', d)
+        target
+
+        >>> setVar('OVERRIDES', 'arm:ramses:local', d)
+        >>> setVar('TEST', 'original', d)
+        >>> update_data(d)
+        >>> print getVar('TEST', d)
+        local
+
+        CopyMonster:
+        >>> e = d.createCopy()
+        >>> setVar('TEST_foo', 'foo', e)
+        >>> update_data(e)
+        >>> print getVar('TEST', e)
+        local
+
+        >>> setVar('OVERRIDES', 'arm:ramses:local:foo', e)
+        >>> update_data(e)
+        >>> print getVar('TEST', e)
+        foo
+
+        >>> f = d.createCopy()
+        >>> setVar('TEST_moo', 'something', f)
+        >>> setVar('OVERRIDES', 'moo:arm:ramses:local:foo', e)
+        >>> update_data(e)
+        >>> print getVar('TEST', e)
+        foo
+
+
+        >>> h = init()
+        >>> setVar('SRC_URI', 'file://append.foo;patch=1 ', h)
+        >>> g = h.createCopy()
+        >>> setVar('SRC_URI_append_arm', 'file://other.foo;patch=1', g)
+        >>> setVar('OVERRIDES', 'arm:moo', g)
+        >>> update_data(g)
+        >>> print getVar('SRC_URI', g)
+        file://append.foo;patch=1 file://other.foo;patch=1
+
+    """
+    bb.msg.debug(2, bb.msg.domain.Data, "update_data()")
+
+    # now ask the cookie monster for help
+    #print "Cookie Monster"
+    #print "Append/Prepend %s" % d._special_values
+    #print "Overrides      %s" % d._seen_overrides
+
+    overrides = (getVar('OVERRIDES', d, 1) or "").split(':') or []
+
+    #
+    # Well let us see what breaks here. We used to iterate
+    # over each variable and apply the override and then
+    # do the line expanding.
+    # If we have bad luck - which we will have - the keys
+    # where in some order that is so important for this
+    # method which we don't have anymore.
+    # Anyway we will fix that and write test cases this
+    # time.
+
+    #
+    # First we apply all overrides
+    # Then  we will handle _append and _prepend
+    #
+
+    for o in overrides:
+        # calculate '_'+override
+        l    = len(o)+1
+
+        # see if one should even try
+        if not d._seen_overrides.has_key(o):
+            continue
+
+        vars = d._seen_overrides[o]
+        for var in vars:
+            name = var[:-l]
+            try:
+                d[name] = d[var]
+            except:
+                bb.msg.note(1, bb.msg.domain.Data, "Untracked delVar")
+
+    # now on to the appends and prepends
+    if d._special_values.has_key('_append'):
+        appends = d._special_values['_append'] or []
+        for append in appends:
+            for (a, o) in getVarFlag(append, '_append', d) or []:
+                # maybe the OVERRIDE was not yet added so keep the append
+                if (o and o in overrides) or not o:
+                    delVarFlag(append, '_append', d)
+                if o and not o in overrides:
+                    continue
+
+                sval = getVar(append,d) or ""
+                sval+=a
+                setVar(append, sval, d)
+
+
+    if d._special_values.has_key('_prepend'):
+        prepends = d._special_values['_prepend'] or []
+
+        for prepend in prepends:
+            for (a, o) in getVarFlag(prepend, '_prepend', d) or []:
+                # maybe the OVERRIDE was not yet added so keep the prepend
+                if (o and o in overrides) or not o:
+                    delVarFlag(prepend, '_prepend', d)
+                if o and not o in overrides:
+                    continue
+
+                sval = a + (getVar(prepend,d) or "")
+                setVar(prepend, sval, d)
+
+
+def inherits_class(klass, d):
+    val = getVar('__inherit_cache', d) or []
+    if os.path.join('classes', '%s.bbclass' % klass) in val:
+        return True
+    return False
+
+def _test():
+    """Start a doctest run on this module"""
+    import doctest
+    from bb import data
+    doctest.testmod(data)
+
+if __name__ == "__main__":
+    _test()
diff --git a/bitbake-dev/lib/bb/data_smart.py b/bitbake-dev/lib/bb/data_smart.py
new file mode 100644
index 0000000000..b3a51b0edf
--- /dev/null
+++ b/bitbake-dev/lib/bb/data_smart.py
@@ -0,0 +1,292 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake Smart Dictionary Implementation
+
+Functions for interacting with the data structure used by the
+BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2004, 2005  Seb Frankengul
+# Copyright (C) 2005, 2006  Holger Hans Peter Freyther
+# Copyright (C) 2005        Uli Luckas
+# Copyright (C) 2005        ROAD GmbH
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import copy, os, re, sys, time, types
+import bb
+from bb   import utils, methodpool
+from COW  import COWDictBase
+from sets import Set
+from new  import classobj
+
+
+__setvar_keyword__ = ["_append","_prepend"]
+__setvar_regexp__ = re.compile('(?P<base>.*?)(?P<keyword>_append|_prepend)(_(?P<add>.*))?')
+__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
+__expand_python_regexp__ = re.compile(r"\${@.+?}")
+
+
+class DataSmart:
+    def __init__(self, special = COWDictBase.copy(), seen = COWDictBase.copy() ):
+        self.dict = {}
+
+        # cookie monster tribute
+        self._special_values = special
+        self._seen_overrides = seen
+
+        self.expand_cache = {}
+
+    def expand(self,s, varname):
+        def var_sub(match):
+            key = match.group()[2:-1]
+            if varname and key:
+                if varname == key:
+                    raise Exception("variable %s references itself!" % varname)
+            var = self.getVar(key, 1)
+            if var is not None:
+                return var
+            else:
+                return match.group()
+
+        def python_sub(match):
+            import bb
+            code = match.group()[3:-1]
+            locals()['d'] = self
+            s = eval(code)
+            if type(s) == types.IntType: s = str(s)
+            return s
+
+        if type(s) is not types.StringType: # sanity check
+            return s
+
+        if varname and varname in self.expand_cache:
+            return self.expand_cache[varname]
+
+        while s.find('${') != -1:
+            olds = s
+            try:
+                s = __expand_var_regexp__.sub(var_sub, s)
+                s = __expand_python_regexp__.sub(python_sub, s)
+                if s == olds: break
+                if type(s) is not types.StringType: # sanity check
+                    bb.msg.error(bb.msg.domain.Data, 'expansion of %s returned non-string %s' % (olds, s))
+            except KeyboardInterrupt:
+                raise
+            except:
+                bb.msg.note(1, bb.msg.domain.Data, "%s:%s while evaluating:\n%s" % (sys.exc_info()[0], sys.exc_info()[1], s))
+                raise
+
+        if varname:
+            self.expand_cache[varname] = s
+
+        return s
+
+    def initVar(self, var):
+        self.expand_cache = {}
+        if not var in self.dict:
+            self.dict[var] = {}
+
+    def _findVar(self,var):
+        _dest = self.dict
+
+        while (_dest and var not in _dest):
+            if not "_data" in _dest:
+                _dest = None
+                break
+            _dest = _dest["_data"]
+
+        if _dest and var in _dest:
+            return _dest[var]
+        return None
+
+    def _makeShadowCopy(self, var):
+        if var in self.dict:
+            return
+
+        local_var = self._findVar(var)
+
+        if local_var:
+            self.dict[var] = copy.copy(local_var)
+        else:
+            self.initVar(var)
+
+    def setVar(self,var,value):
+        self.expand_cache = {}
+        match  = __setvar_regexp__.match(var)
+        if match and match.group("keyword") in __setvar_keyword__:
+            base = match.group('base')
+            keyword = match.group("keyword")
+            override = match.group('add')
+            l = self.getVarFlag(base, keyword) or []
+            l.append([value, override])
+            self.setVarFlag(base, keyword, l)
+
+            # todo make sure keyword is not __doc__ or __module__
+            # pay the cookie monster
+            try:
+                self._special_values[keyword].add( base )
+            except:
+                self._special_values[keyword] = Set()
+                self._special_values[keyword].add( base )
+
+            return
+
+        if not var in self.dict:
+            self._makeShadowCopy(var)
+        if self.getVarFlag(var, 'matchesenv'):
+            self.delVarFlag(var, 'matchesenv')
+            self.setVarFlag(var, 'export', 1)
+
+        # more cookies for the cookie monster
+        if '_' in var:
+            override = var[var.rfind('_')+1:]
+            if not self._seen_overrides.has_key(override):
+                self._seen_overrides[override] = Set()
+            self._seen_overrides[override].add( var )
+
+        # setting var
+        self.dict[var]["content"] = value
+
+    def getVar(self,var,exp):
+        value = self.getVarFlag(var,"content")
+
+        if exp and value:
+            return self.expand(value,var)
+        return value
+
+    def renameVar(self, key, newkey):
+        """
+        Rename the variable key to newkey 
+        """
+        val = self.getVar(key, 0)
+        if val is None:
+            return
+
+        self.setVar(newkey, val)
+
+        for i in ('_append', '_prepend'):
+            dest = self.getVarFlag(newkey, i) or []
+            src = self.getVarFlag(key, i) or []
+            dest.extend(src)
+            self.setVarFlag(newkey, i, dest)
+            
+            if self._special_values.has_key(i) and key in self._special_values[i]:
+                self._special_values[i].remove(key)
+                self._special_values[i].add(newkey)
+
+        self.delVar(key)
+
+    def delVar(self,var):
+        self.expand_cache = {}
+        self.dict[var] = {}
+
+    def setVarFlag(self,var,flag,flagvalue):
+        if not var in self.dict:
+            self._makeShadowCopy(var)
+        self.dict[var][flag] = flagvalue
+
+    def getVarFlag(self,var,flag):
+        local_var = self._findVar(var)
+        if local_var:
+            if flag in local_var:
+                return copy.copy(local_var[flag])
+        return None
+
+    def delVarFlag(self,var,flag):
+        local_var = self._findVar(var)
+        if not local_var:
+            return
+        if not var in self.dict:
+            self._makeShadowCopy(var)
+
+        if var in self.dict and flag in self.dict[var]:
+            del self.dict[var][flag]
+
+    def setVarFlags(self,var,flags):
+        if not var in self.dict:
+            self._makeShadowCopy(var)
+
+        for i in flags.keys():
+            if i == "content":
+                continue
+            self.dict[var][i] = flags[i]
+
+    def getVarFlags(self,var):
+        local_var = self._findVar(var)
+        flags = {}
+
+        if local_var:
+            for i in local_var.keys():
+                if i == "content":
+                    continue
+                flags[i] = local_var[i]
+
+        if len(flags) == 0:
+            return None
+        return flags
+
+
+    def delVarFlags(self,var):
+        if not var in self.dict:
+            self._makeShadowCopy(var)
+
+        if var in self.dict:
+            content = None
+
+            # try to save the content
+            if "content" in self.dict[var]:
+                content  = self.dict[var]["content"]
+                self.dict[var]            = {}
+                self.dict[var]["content"] = content
+            else:
+                del self.dict[var]
+
+
+    def createCopy(self):
+        """
+        Create a copy of self by setting _data to self
+        """
+        # we really want this to be a DataSmart...
+        data = DataSmart(seen=self._seen_overrides.copy(), special=self._special_values.copy())
+        data.dict["_data"] = self.dict
+
+        return data
+
+    # Dictionary Methods
+    def keys(self):
+        def _keys(d, mykey):
+            if "_data" in d:
+                _keys(d["_data"],mykey)
+
+            for key in d.keys():
+                if key != "_data":
+                    mykey[key] = None
+        keytab = {}
+        _keys(self.dict,keytab)
+        return keytab.keys()
+
+    def __getitem__(self,item):
+        #print "Warning deprecated"
+        return self.getVar(item, False)
+
+    def __setitem__(self,var,data):
+        #print "Warning deprecated"
+        self.setVar(var,data)
+
+
diff --git a/bitbake-dev/lib/bb/event.py b/bitbake-dev/lib/bb/event.py
new file mode 100644
index 0000000000..c13a0127a5
--- /dev/null
+++ b/bitbake-dev/lib/bb/event.py
@@ -0,0 +1,302 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Event' implementation
+
+Classes and functions for manipulating 'events' in the
+BitBake build tools.
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, re
+import bb.utils
+
+class Event:
+    """Base class for events"""
+    type = "Event"
+
+    def __init__(self, d):
+        self._data = d
+
+    def getData(self):
+        return self._data
+
+    def setData(self, data):
+        self._data = data
+
+    data = property(getData, setData, None, "data property")
+
+NotHandled = 0
+Handled = 1
+
+Registered        = 10
+AlreadyRegistered = 14
+
+# Internal
+_handlers = {}
+_ui_handlers = {}
+_ui_handler_seq = 0
+
+def fire(event):
+    """Fire off an Event"""
+
+    for handler in _handlers:
+        h = _handlers[handler]
+        if type(h).__name__ == "code":
+            exec(h)
+            tmpHandler(event)
+        else:
+            h(event)
+
+    # Remove the event data elements for UI handlers - too much data otherwise
+    # They can request data if they need it
+    event.data = None
+    event._data = None
+
+    errors = []
+    for h in _ui_handlers:
+        #print "Sending event %s" % event
+        classid = "%s.%s" % (event.__class__.__module__, event.__class__.__name__)
+        try:
+            _ui_handlers[h].event.send((classid, event))
+        except:
+            errors.append(h)
+    for h in errors:
+        del _ui_handlers[h]
+
+def register(name, handler):
+    """Register an Event handler"""
+
+    # already registered
+    if name in _handlers:
+        return AlreadyRegistered
+
+    if handler is not None:
+        # handle string containing python code
+        if type(handler).__name__ == "str":
+            tmp = "def tmpHandler(e):\n%s" % handler
+            comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._registerCode")
+            _handlers[name] = comp
+        else:
+            _handlers[name] = handler
+
+        return Registered
+
+def remove(name, handler):
+    """Remove an Event handler"""
+    _handlers.pop(name)
+
+def register_UIHhandler(handler):
+    bb.event._ui_handler_seq = bb.event._ui_handler_seq + 1
+    _ui_handlers[_ui_handler_seq] = handler
+    return _ui_handler_seq
+
+def unregister_UIHhandler(handlerNum):
+    if handlerNum in _ui_handlers:
+        del _ui_handlers[handlerNum]
+    return
+
+def getName(e):
+    """Returns the name of a class or class instance"""
+    if getattr(e, "__name__", None) == None:
+        return e.__class__.__name__
+    else:
+        return e.__name__
+
+class ConfigParsed(Event):
+    """Configuration Parsing Complete"""
+
+class StampUpdate(Event):
+    """Trigger for any adjustment of the stamp files to happen"""
+
+    def __init__(self, targets, stampfns, d):
+        self._targets = targets
+        self._stampfns = stampfns
+        Event.__init__(self, d)
+
+    def getStampPrefix(self):
+        return self._stampfns
+
+    def getTargets(self):
+        return self._targets
+
+    stampPrefix = property(getStampPrefix)
+    targets = property(getTargets)
+
+class PkgBase(Event):
+    """Base class for package events"""
+
+    def __init__(self, t, d):
+        self._pkg = t
+        Event.__init__(self, d)
+        self._message = "package %s: %s" % (bb.data.getVar("P", d, 1), getName(self)[3:])
+
+    def getPkg(self):
+        return self._pkg
+
+    def setPkg(self, pkg):
+        self._pkg = pkg
+
+    pkg = property(getPkg, setPkg, None, "pkg property")
+
+
+class BuildBase(Event):
+    """Base class for bbmake run events"""
+
+    def __init__(self, n, p, c, failures = 0):
+        self._name = n
+        self._pkgs = p
+        Event.__init__(self, c)
+        self._failures = failures
+
+    def getPkgs(self):
+        return self._pkgs
+
+    def setPkgs(self, pkgs):
+        self._pkgs = pkgs
+
+    def getName(self):
+        return self._name
+
+    def setName(self, name):
+        self._name = name
+
+    def getCfg(self):
+        return self.data
+
+    def setCfg(self, cfg):
+        self.data = cfg
+
+    def getFailures(self):
+        """
+        Return the number of failed packages
+        """
+        return self._failures
+
+    pkgs = property(getPkgs, setPkgs, None, "pkgs property")
+    name = property(getName, setName, None, "name property")
+    cfg = property(getCfg, setCfg, None, "cfg property")
+
+
+class DepBase(PkgBase):
+    """Base class for dependency events"""
+
+    def __init__(self, t, data, d):
+        self._dep = d
+        PkgBase.__init__(self, t, data)
+
+    def getDep(self):
+        return self._dep
+
+    def setDep(self, dep):
+        self._dep = dep
+
+    dep = property(getDep, setDep, None, "dep property")
+
+
+class PkgStarted(PkgBase):
+    """Package build started"""
+
+
+class PkgFailed(PkgBase):
+    """Package build failed"""
+
+
+class PkgSucceeded(PkgBase):
+    """Package build completed"""
+
+
+class BuildStarted(BuildBase):
+    """bbmake build run started"""
+
+
+class BuildCompleted(BuildBase):
+    """bbmake build run completed"""
+
+
+class UnsatisfiedDep(DepBase):
+    """Unsatisfied Dependency"""
+
+
+class RecursiveDep(DepBase):
+    """Recursive Dependency"""
+
+class NoProvider(Event):
+    """No Provider for an Event"""
+
+    def __init__(self, item, data, runtime=False):
+        Event.__init__(self, data)
+        self._item = item
+        self._runtime = runtime
+
+    def getItem(self):
+        return self._item
+
+    def isRuntime(self):
+        return self._runtime
+
+class MultipleProviders(Event):
+    """Multiple Providers"""
+
+    def  __init__(self, item, candidates, data, runtime = False):
+        Event.__init__(self, data)
+        self._item = item
+        self._candidates = candidates
+        self._is_runtime = runtime
+
+    def isRuntime(self):
+        """
+        Is this a runtime issue?
+        """
+        return self._is_runtime
+
+    def getItem(self):
+        """
+        The name for the to be build item
+        """
+        return self._item
+
+    def getCandidates(self):
+        """
+        Get the possible Candidates for a PROVIDER.
+        """
+        return self._candidates
+
+class ParseProgress(Event):
+    """
+    Parsing Progress Event
+    """
+
+    def __init__(self, d, cached, parsed, skipped, masked, errors, total):
+        Event.__init__(self, d)
+        self.cached = cached
+        self.parsed = parsed
+        self.skipped = skipped
+        self.masked = masked
+        self.errors = errors
+        self.sofar = cached + parsed + skipped
+        self.total = total
+
+class DepTreeGenerated(Event):
+    """
+    Event when a dependency tree has been generated
+    """
+
+    def __init__(self, d, depgraph):
+        Event.__init__(self, d)
+        self._depgraph = depgraph
+
diff --git a/bitbake-dev/lib/bb/fetch/__init__.py b/bitbake-dev/lib/bb/fetch/__init__.py
new file mode 100644
index 0000000000..c3bea447c1
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/__init__.py
@@ -0,0 +1,556 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+Classes for obtaining upstream sources for the
+BitBake build tools.
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re, fcntl
+import bb
+from   bb import data
+from   bb import persist_data
+
+try:
+    import cPickle as pickle
+except ImportError:
+    import pickle
+
+class FetchError(Exception):
+    """Exception raised when a download fails"""
+
+class NoMethodError(Exception):
+    """Exception raised when there is no method to obtain a supplied url or set of urls"""
+
+class MissingParameterError(Exception):
+    """Exception raised when a fetch method is missing a critical parameter in the url"""
+
+class ParameterError(Exception):
+    """Exception raised when a url cannot be proccessed due to invalid parameters."""
+
+class MD5SumError(Exception):
+    """Exception raised when a MD5SUM of a file does not match the expected one"""
+
+def uri_replace(uri, uri_find, uri_replace, d):
+#   bb.msg.note(1, bb.msg.domain.Fetcher, "uri_replace: operating on %s" % uri)
+    if not uri or not uri_find or not uri_replace:
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "uri_replace: passed an undefined value, not replacing")
+    uri_decoded = list(bb.decodeurl(uri))
+    uri_find_decoded = list(bb.decodeurl(uri_find))
+    uri_replace_decoded = list(bb.decodeurl(uri_replace))
+    result_decoded = ['','','','','',{}]
+    for i in uri_find_decoded:
+        loc = uri_find_decoded.index(i)
+        result_decoded[loc] = uri_decoded[loc]
+        import types
+        if type(i) == types.StringType:
+            import re
+            if (re.match(i, uri_decoded[loc])):
+                result_decoded[loc] = re.sub(i, uri_replace_decoded[loc], uri_decoded[loc])
+                if uri_find_decoded.index(i) == 2:
+                    if d:
+                        localfn = bb.fetch.localpath(uri, d)
+                        if localfn:
+                            result_decoded[loc] = os.path.dirname(result_decoded[loc]) + "/" + os.path.basename(bb.fetch.localpath(uri, d))
+#                       bb.msg.note(1, bb.msg.domain.Fetcher, "uri_replace: matching %s against %s and replacing with %s" % (i, uri_decoded[loc], uri_replace_decoded[loc]))
+            else:
+#               bb.msg.note(1, bb.msg.domain.Fetcher, "uri_replace: no match")
+                return uri
+#           else:
+#               for j in i.keys():
+#                   FIXME: apply replacements against options
+    return bb.encodeurl(result_decoded)
+
+methods = []
+urldata_cache = {}
+
+def fetcher_init(d):
+    """
+    Called to initilize the fetchers once the configuration data is known
+    Calls before this must not hit the cache.
+    """
+    pd = persist_data.PersistData(d)
+    # When to drop SCM head revisions controled by user policy
+    srcrev_policy = bb.data.getVar('BB_SRCREV_POLICY', d, 1) or "clear"
+    if srcrev_policy == "cache":
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "Keeping SRCREV cache due to cache policy of: %s" % srcrev_policy)
+    elif srcrev_policy == "clear":
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "Clearing SRCREV cache due to cache policy of: %s" % srcrev_policy)
+        pd.delDomain("BB_URI_HEADREVS")
+    else:
+        bb.msg.fatal(bb.msg.domain.Fetcher, "Invalid SRCREV cache policy of: %s" % srcrev_policy)
+    # Make sure our domains exist
+    pd.addDomain("BB_URI_HEADREVS")
+    pd.addDomain("BB_URI_LOCALCOUNT")
+
+# Function call order is usually:
+#   1. init
+#   2. go
+#   3. localpaths
+# localpath can be called at any time
+
+def init(urls, d, setup = True):
+    urldata = {}
+    fn = bb.data.getVar('FILE', d, 1)
+    if fn in urldata_cache:
+        urldata = urldata_cache[fn]
+
+    for url in urls:
+        if url not in urldata:
+            urldata[url] = FetchData(url, d)
+
+    if setup:
+        for url in urldata:
+            if not urldata[url].setup:
+                urldata[url].setup_localpath(d) 
+
+    urldata_cache[fn] = urldata
+    return urldata
+
+def go(d):
+    """
+    Fetch all urls
+    init must have previously been called
+    """
+    urldata = init([], d, True)
+
+    for u in urldata:
+        ud = urldata[u]
+        m = ud.method
+        if ud.localfile:
+            if not m.forcefetch(u, ud, d) and os.path.exists(ud.md5):
+                # File already present along with md5 stamp file
+                # Touch md5 file to show activity
+                try:
+                    os.utime(ud.md5, None)
+                except:
+                    # Errors aren't fatal here
+                    pass
+                continue
+            lf = bb.utils.lockfile(ud.lockfile)
+            if not m.forcefetch(u, ud, d) and os.path.exists(ud.md5):
+                # If someone else fetched this before we got the lock, 
+                # notice and don't try again
+                try:
+                    os.utime(ud.md5, None)
+                except:
+                    # Errors aren't fatal here
+                    pass
+                bb.utils.unlockfile(lf)
+                continue
+        m.go(u, ud, d)
+        if ud.localfile:
+            if not m.forcefetch(u, ud, d):
+                Fetch.write_md5sum(u, ud, d)
+            bb.utils.unlockfile(lf)
+
+
+def checkstatus(d):
+    """
+    Check all urls exist upstream
+    init must have previously been called
+    """
+    urldata = init([], d, True)
+
+    for u in urldata:
+        ud = urldata[u]
+        m = ud.method
+        bb.msg.note(1, bb.msg.domain.Fetcher, "Testing URL %s" % u)
+        ret = m.checkstatus(u, ud, d)
+        if not ret:
+            bb.msg.fatal(bb.msg.domain.Fetcher, "URL %s doesn't work" % u)
+
+def localpaths(d):
+    """
+    Return a list of the local filenames, assuming successful fetch
+    """
+    local = []
+    urldata = init([], d, True)
+
+    for u in urldata:
+        ud = urldata[u]      
+        local.append(ud.localpath)
+
+    return local
+
+srcrev_internal_call = False
+
+def get_srcrev(d):
+    """
+    Return the version string for the current package
+    (usually to be used as PV)
+    Most packages usually only have one SCM so we just pass on the call.
+    In the multi SCM case, we build a value based on SRCREV_FORMAT which must 
+    have been set.
+    """
+
+    #
+    # Ugly code alert. localpath in the fetchers will try to evaluate SRCREV which 
+    # could translate into a call to here. If it does, we need to catch this
+    # and provide some way so it knows get_srcrev is active instead of being
+    # some number etc. hence the srcrev_internal_call tracking and the magic  
+    # "SRCREVINACTION" return value.
+    #
+    # Neater solutions welcome!
+    #
+    if bb.fetch.srcrev_internal_call:
+        return "SRCREVINACTION"
+
+    scms = []
+
+    # Only call setup_localpath on URIs which suppports_srcrev() 
+    urldata = init(bb.data.getVar('SRC_URI', d, 1).split(), d, False)
+    for u in urldata:
+        ud = urldata[u]
+        if ud.method.suppports_srcrev():
+            if not ud.setup:
+                ud.setup_localpath(d)
+            scms.append(u)
+
+    if len(scms) == 0:
+        bb.msg.error(bb.msg.domain.Fetcher, "SRCREV was used yet no valid SCM was found in SRC_URI")
+        raise ParameterError
+
+    if len(scms) == 1:
+        return urldata[scms[0]].method.sortable_revision(scms[0], urldata[scms[0]], d)
+
+    #
+    # Mutiple SCMs are in SRC_URI so we resort to SRCREV_FORMAT
+    #
+    format = bb.data.getVar('SRCREV_FORMAT', d, 1)
+    if not format:
+        bb.msg.error(bb.msg.domain.Fetcher, "The SRCREV_FORMAT variable must be set when multiple SCMs are used.")
+        raise ParameterError
+
+    for scm in scms:
+        if 'name' in urldata[scm].parm:
+            name = urldata[scm].parm["name"]
+            rev = urldata[scm].method.sortable_revision(scm, urldata[scm], d)
+            format = format.replace(name, rev)
+
+    return format
+
+def localpath(url, d, cache = True):
+    """
+    Called from the parser with cache=False since the cache isn't ready 
+    at this point. Also called from classed in OE e.g. patch.bbclass
+    """
+    ud = init([url], d)
+    if ud[url].method:
+        return ud[url].localpath
+    return url
+
+def runfetchcmd(cmd, d, quiet = False):
+    """
+    Run cmd returning the command output
+    Raise an error if interrupted or cmd fails
+    Optionally echo command output to stdout
+    """
+
+    # Need to export PATH as binary could be in metadata paths
+    # rather than host provided
+    # Also include some other variables.
+    # FIXME: Should really include all export varaiables?
+    exportvars = ['PATH', 'GIT_PROXY_HOST', 'GIT_PROXY_PORT', 'GIT_PROXY_COMMAND']
+
+    for var in exportvars:
+        val = data.getVar(var, d, True)
+        if val:
+            cmd = 'export ' + var + '=%s; %s' % (val, cmd)
+
+    bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % cmd)
+
+    # redirect stderr to stdout
+    stdout_handle = os.popen(cmd + " 2>&1", "r")
+    output = ""
+
+    while 1:
+        line = stdout_handle.readline()
+        if not line:
+            break
+        if not quiet:
+            print line,
+        output += line
+
+    status =  stdout_handle.close() or 0
+    signal = status >> 8
+    exitstatus = status & 0xff
+
+    if signal:
+        raise FetchError("Fetch command %s failed with signal %s, output:\n%s" % (cmd, signal, output))
+    elif status != 0:
+        raise FetchError("Fetch command %s failed with exit code %s, output:\n%s" % (cmd, status, output))
+
+    return output
+
+class FetchData(object):
+    """
+    A class which represents the fetcher state for a given URI.
+    """
+    def __init__(self, url, d):
+        self.localfile = ""
+        (self.type, self.host, self.path, self.user, self.pswd, self.parm) = bb.decodeurl(data.expand(url, d))
+        self.date = Fetch.getSRCDate(self, d)
+        self.url = url
+        self.setup = False
+        for m in methods:
+            if m.supports(url, self, d):
+                self.method = m
+                return
+        raise NoMethodError("Missing implementation for url %s" % url)
+
+    def setup_localpath(self, d):
+        self.setup = True
+        if "localpath" in self.parm:
+            # if user sets localpath for file, use it instead.
+            self.localpath = self.parm["localpath"]
+        else:
+            bb.fetch.srcrev_internal_call = True
+            self.localpath = self.method.localpath(self.url, self, d)
+            bb.fetch.srcrev_internal_call = False
+            # We have to clear data's internal caches since the cached value of SRCREV is now wrong.
+            # Horrible...
+            bb.data.delVar("ISHOULDNEVEREXIST", d)
+        self.md5 = self.localpath + '.md5'
+        self.lockfile = self.localpath + '.lock'
+
+
+class Fetch(object):
+    """Base class for 'fetch'ing data"""
+
+    def __init__(self, urls = []):
+        self.urls = []
+
+    def supports(self, url, urldata, d):
+        """
+        Check to see if this fetch class supports a given url.
+        """
+        return 0
+
+    def localpath(self, url, urldata, d):
+        """
+        Return the local filename of a given url assuming a successful fetch.
+        Can also setup variables in urldata for use in go (saving code duplication 
+        and duplicate code execution)
+        """
+        return url
+
+    def setUrls(self, urls):
+        self.__urls = urls
+
+    def getUrls(self):
+        return self.__urls
+
+    urls = property(getUrls, setUrls, None, "Urls property")
+
+    def forcefetch(self, url, urldata, d):
+        """
+        Force a fetch, even if localpath exists?
+        """
+        return False
+
+    def suppports_srcrev(self):
+        """
+        The fetcher supports auto source revisions (SRCREV)
+        """
+        return False
+
+    def go(self, url, urldata, d):
+        """
+        Fetch urls
+        Assumes localpath was called first
+        """
+        raise NoMethodError("Missing implementation for url")
+
+    def checkstatus(self, url, urldata, d):
+        """
+        Check the status of a URL
+        Assumes localpath was called first
+        """
+        bb.msg.note(1, bb.msg.domain.Fetcher, "URL %s could not be checked for status since no method exists." % url)
+        return True
+
+    def getSRCDate(urldata, d):
+        """
+        Return the SRC Date for the component
+
+        d the bb.data module
+        """
+        if "srcdate" in urldata.parm:
+            return urldata.parm['srcdate']
+
+        pn = data.getVar("PN", d, 1)
+
+        if pn:
+            return data.getVar("SRCDATE_%s" % pn, d, 1) or data.getVar("CVSDATE_%s" % pn, d, 1) or data.getVar("SRCDATE", d, 1) or data.getVar("CVSDATE", d, 1) or data.getVar("DATE", d, 1)
+
+        return data.getVar("SRCDATE", d, 1) or data.getVar("CVSDATE", d, 1) or data.getVar("DATE", d, 1)
+    getSRCDate = staticmethod(getSRCDate)
+
+    def srcrev_internal_helper(ud, d):
+        """
+        Return:
+            a) a source revision if specified
+            b) True if auto srcrev is in action
+            c) False otherwise
+        """
+
+        if 'rev' in ud.parm:
+            return ud.parm['rev']
+
+        if 'tag' in ud.parm:
+            return ud.parm['tag']
+
+        rev = None
+        if 'name' in ud.parm:
+            pn = data.getVar("PN", d, 1)
+            rev = data.getVar("SRCREV_pn-" + pn + "_" + ud.parm['name'], d, 1)
+        if not rev:
+            rev = data.getVar("SRCREV", d, 1)
+        if not rev:
+            return False
+        if rev is "SRCREVINACTION":
+            return True
+        return rev
+
+    srcrev_internal_helper = staticmethod(srcrev_internal_helper)
+
+    def try_mirror(d, tarfn):
+        """
+        Try to use a mirrored version of the sources. We do this
+        to avoid massive loads on foreign cvs and svn servers.
+        This method will be used by the different fetcher
+        implementations.
+
+        d Is a bb.data instance
+        tarfn is the name of the tarball
+        """
+        tarpath = os.path.join(data.getVar("DL_DIR", d, 1), tarfn)
+        if os.access(tarpath, os.R_OK):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists, skipping checkout." % tarfn)
+            return True
+
+        pn = data.getVar('PN', d, True)
+        src_tarball_stash = None
+        if pn:
+            src_tarball_stash = (data.getVar('SRC_TARBALL_STASH_%s' % pn, d, True) or data.getVar('CVS_TARBALL_STASH_%s' % pn, d, True) or data.getVar('SRC_TARBALL_STASH', d, True) or data.getVar('CVS_TARBALL_STASH', d, True) or "").split()
+
+        for stash in src_tarball_stash:
+            fetchcmd = data.getVar("FETCHCOMMAND_mirror", d, True) or data.getVar("FETCHCOMMAND_wget", d, True)
+            uri = stash + tarfn
+            bb.msg.note(1, bb.msg.domain.Fetcher, "fetch " + uri)
+            fetchcmd = fetchcmd.replace("${URI}", uri)
+            ret = os.system(fetchcmd)
+            if ret == 0:
+                bb.msg.note(1, bb.msg.domain.Fetcher, "Fetched %s from tarball stash, skipping checkout" % tarfn)
+                return True
+        return False
+    try_mirror = staticmethod(try_mirror)
+
+    def verify_md5sum(ud, got_sum):
+        """
+        Verify the md5sum we wanted with the one we got
+        """
+        wanted_sum = None
+        if 'md5sum' in ud.parm:
+            wanted_sum = ud.parm['md5sum']
+        if not wanted_sum:
+            return True
+
+        return wanted_sum == got_sum
+    verify_md5sum = staticmethod(verify_md5sum)
+
+    def write_md5sum(url, ud, d):
+        md5data = bb.utils.md5_file(ud.localpath)
+        # verify the md5sum
+        if not Fetch.verify_md5sum(ud, md5data):
+            raise MD5SumError(url)
+
+        md5out = file(ud.md5, 'w')
+        md5out.write(md5data)
+        md5out.close()
+    write_md5sum = staticmethod(write_md5sum)
+
+    def latest_revision(self, url, ud, d):
+        """
+        Look in the cache for the latest revision, if not present ask the SCM.
+        """
+        if not hasattr(self, "_latest_revision"):
+            raise ParameterError
+
+        pd = persist_data.PersistData(d)
+        key = self._revision_key(url, ud, d)
+        rev = pd.getValue("BB_URI_HEADREVS", key)
+        if rev != None:
+            return str(rev)
+
+        rev = self._latest_revision(url, ud, d)
+        pd.setValue("BB_URI_HEADREVS", key, rev)
+        return rev
+
+    def sortable_revision(self, url, ud, d):
+        """
+        
+        """
+        if hasattr(self, "_sortable_revision"):
+            return self._sortable_revision(url, ud, d)
+
+        pd = persist_data.PersistData(d)
+        key = self._revision_key(url, ud, d)
+        latest_rev = self._build_revision(url, ud, d)
+        last_rev = pd.getValue("BB_URI_LOCALCOUNT", key + "_rev")
+        count = pd.getValue("BB_URI_LOCALCOUNT", key + "_count")
+
+        if last_rev == latest_rev:
+            return str(count + "+" + latest_rev)
+
+        if count is None:
+            count = "0"
+        else:
+            count = str(int(count) + 1)
+
+        pd.setValue("BB_URI_LOCALCOUNT", key + "_rev", latest_rev)
+        pd.setValue("BB_URI_LOCALCOUNT", key + "_count", count)
+
+        return str(count + "+" + latest_rev)
+
+
+import cvs
+import git
+import local
+import svn
+import wget
+import svk
+import ssh
+import perforce
+import bzr
+import hg
+
+methods.append(local.Local())
+methods.append(wget.Wget())
+methods.append(svn.Svn())
+methods.append(git.Git())
+methods.append(cvs.Cvs())
+methods.append(svk.Svk())
+methods.append(ssh.SSH())
+methods.append(perforce.Perforce())
+methods.append(bzr.Bzr())
+methods.append(hg.Hg())
diff --git a/bitbake-dev/lib/bb/fetch/bzr.py b/bitbake-dev/lib/bb/fetch/bzr.py
new file mode 100644
index 0000000000..b23e9eef86
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/bzr.py
@@ -0,0 +1,154 @@
+"""
+BitBake 'Fetch' implementation for bzr.
+
+"""
+
+# Copyright (C) 2007 Ross Burton
+# Copyright (C) 2007 Richard Purdie
+#
+#   Classes for obtaining upstream sources for the
+#   BitBake build tools.
+#   Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os
+import sys
+import bb
+from bb import data
+from bb.fetch import Fetch
+from bb.fetch import FetchError
+from bb.fetch import MissingParameterError
+from bb.fetch import runfetchcmd
+
+class Bzr(Fetch):
+    def supports(self, url, ud, d):
+        return ud.type in ['bzr']
+
+    def localpath (self, url, ud, d):
+
+        # Create paths to bzr checkouts
+        relpath = ud.path
+        if relpath.startswith('/'):
+            # Remove leading slash as os.path.join can't cope
+            relpath = relpath[1:]
+        ud.pkgdir = os.path.join(data.expand('${BZRDIR}', d), ud.host, relpath)
+
+        revision = Fetch.srcrev_internal_helper(ud, d)
+        if revision is True:
+            ud.revision = self.latest_revision(url, ud, d)      
+        elif revision:
+            ud.revision = revision
+
+        if not ud.revision:
+            ud.revision = self.latest_revision(url, ud, d)      
+
+        ud.localfile = data.expand('bzr_%s_%s_%s.tar.gz' % (ud.host, ud.path.replace('/', '.'), ud.revision), d)
+        
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def _buildbzrcommand(self, ud, d, command):
+        """
+        Build up an bzr commandline based on ud
+        command is "fetch", "update", "revno"
+        """
+
+        basecmd = data.expand('${FETCHCMD_bzr}', d)
+
+        proto = "http"
+        if "proto" in ud.parm:
+            proto = ud.parm["proto"]
+
+        bzrroot = ud.host + ud.path
+
+        options = []
+
+        if command is "revno":
+            bzrcmd = "%s revno %s %s://%s" % (basecmd, " ".join(options), proto, bzrroot)
+        else:
+            if ud.revision:
+                options.append("-r %s" % ud.revision)
+
+            if command is "fetch":
+                bzrcmd = "%s co %s %s://%s" % (basecmd, " ".join(options), proto, bzrroot)
+            elif command is "update":
+                bzrcmd = "%s pull %s --overwrite" % (basecmd, " ".join(options))
+            else:
+                raise FetchError("Invalid bzr command %s" % command)
+
+        return bzrcmd
+
+    def go(self, loc, ud, d):
+        """Fetch url"""
+
+        # try to use the tarball stash
+        if Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping bzr checkout." % ud.localpath)
+            return
+
+        if os.access(os.path.join(ud.pkgdir, os.path.basename(ud.pkgdir), '.bzr'), os.R_OK):
+            bzrcmd = self._buildbzrcommand(ud, d, "update")
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "BZR Update %s" % loc)
+            os.chdir(os.path.join (ud.pkgdir, os.path.basename(ud.path)))
+            runfetchcmd(bzrcmd, d)
+        else:
+            os.system("rm -rf %s" % os.path.join(ud.pkgdir, os.path.basename(ud.pkgdir)))
+            bzrcmd = self._buildbzrcommand(ud, d, "fetch")
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "BZR Checkout %s" % loc)
+            bb.mkdirhier(ud.pkgdir)
+            os.chdir(ud.pkgdir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % bzrcmd)
+            runfetchcmd(bzrcmd, d)
+
+        os.chdir(ud.pkgdir)
+        # tar them up to a defined filename
+        try:
+            runfetchcmd("tar -czf %s %s" % (ud.localpath, os.path.basename(ud.pkgdir)), d)
+        except:
+            t, v, tb = sys.exc_info()
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise t, v, tb
+
+    def suppports_srcrev(self):
+        return True
+
+    def _revision_key(self, url, ud, d):
+        """
+        Return a unique key for the url
+        """
+        return "bzr:" + ud.pkgdir
+
+    def _latest_revision(self, url, ud, d):
+        """
+        Return the latest upstream revision number
+        """
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "BZR fetcher hitting network for %s" % url)
+
+        output = runfetchcmd(self._buildbzrcommand(ud, d, "revno"), d, True)
+
+        return output.strip()
+
+    def _sortable_revision(self, url, ud, d):
+        """
+        Return a sortable revision number which in our case is the revision number
+        """
+
+        return self._build_revision(url, ud, d)
+
+    def _build_revision(self, url, ud, d):
+        return ud.revision
+
diff --git a/bitbake-dev/lib/bb/fetch/cvs.py b/bitbake-dev/lib/bb/fetch/cvs.py
new file mode 100644
index 0000000000..c4ccf4303f
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/cvs.py
@@ -0,0 +1,178 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+Classes for obtaining upstream sources for the
+BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+#Based on functions from the base bb module, Copyright 2003 Holger Schurig
+#
+
+import os, re
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import MissingParameterError
+
+class Cvs(Fetch):
+    """
+    Class to fetch a module or modules from cvs repositories
+    """
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with cvs.
+        """
+        return ud.type in ['cvs', 'pserver']
+
+    def localpath(self, url, ud, d):
+        if not "module" in ud.parm:
+            raise MissingParameterError("cvs method needs a 'module' parameter")
+        ud.module = ud.parm["module"]
+
+        ud.tag = ""
+        if 'tag' in ud.parm:
+            ud.tag = ud.parm['tag']
+
+        # Override the default date in certain cases
+        if 'date' in ud.parm:
+            ud.date = ud.parm['date']
+        elif ud.tag:
+            ud.date = ""
+
+        norecurse = ''
+        if 'norecurse' in ud.parm:
+            norecurse = '_norecurse'
+
+        fullpath = ''
+        if 'fullpath' in ud.parm:
+            fullpath = '_fullpath'
+
+        ud.localfile = data.expand('%s_%s_%s_%s%s%s.tar.gz' % (ud.module.replace('/', '.'), ud.host, ud.tag, ud.date, norecurse, fullpath), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def forcefetch(self, url, ud, d):
+        if (ud.date == "now"):
+            return True
+        return False
+
+    def go(self, loc, ud, d):
+
+        # try to use the tarball stash
+        if not self.forcefetch(loc, ud, d) and Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping cvs checkout." % ud.localpath)
+            return
+
+        method = "pserver"
+        if "method" in ud.parm:
+            method = ud.parm["method"]
+
+        localdir = ud.module
+        if "localdir" in ud.parm:
+            localdir = ud.parm["localdir"]
+
+        cvs_port = ""
+        if "port" in ud.parm:
+            cvs_port = ud.parm["port"]
+
+        cvs_rsh = None
+        if method == "ext":
+            if "rsh" in ud.parm:
+                cvs_rsh = ud.parm["rsh"]
+
+        if method == "dir":
+            cvsroot = ud.path
+        else:
+            cvsroot = ":" + method
+            cvsproxyhost = data.getVar('CVS_PROXY_HOST', d, True)
+            if cvsproxyhost:
+                cvsroot += ";proxy=" + cvsproxyhost
+            cvsproxyport = data.getVar('CVS_PROXY_PORT', d, True)
+            if cvsproxyport:
+                cvsroot += ";proxyport=" + cvsproxyport
+            cvsroot += ":" + ud.user
+            if ud.pswd:
+                cvsroot += ":" + ud.pswd
+            cvsroot += "@" + ud.host + ":" + cvs_port + ud.path
+
+        options = []
+        if 'norecurse' in ud.parm:
+            options.append("-l")
+        if ud.date:
+            options.append("-D \"%s UTC\"" % ud.date)
+        if ud.tag:
+            options.append("-r %s" % ud.tag)
+
+        localdata = data.createCopy(d)
+        data.setVar('OVERRIDES', "cvs:%s" % data.getVar('OVERRIDES', localdata), localdata)
+        data.update_data(localdata)
+
+        data.setVar('CVSROOT', cvsroot, localdata)
+        data.setVar('CVSCOOPTS', " ".join(options), localdata)
+        data.setVar('CVSMODULE', ud.module, localdata)
+        cvscmd = data.getVar('FETCHCOMMAND', localdata, 1)
+        cvsupdatecmd = data.getVar('UPDATECOMMAND', localdata, 1)
+
+        if cvs_rsh:
+            cvscmd = "CVS_RSH=\"%s\" %s" % (cvs_rsh, cvscmd)
+            cvsupdatecmd = "CVS_RSH=\"%s\" %s" % (cvs_rsh, cvsupdatecmd)
+
+        # create module directory
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: checking for module directory")
+        pkg = data.expand('${PN}', d)
+        pkgdir = os.path.join(data.expand('${CVSDIR}', localdata), pkg)
+        moddir = os.path.join(pkgdir,localdir)
+        if os.access(os.path.join(moddir,'CVS'), os.R_OK):
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Update " + loc)
+            # update sources there
+            os.chdir(moddir)
+            myret = os.system(cvsupdatecmd)
+        else:
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
+            # check out sources there
+            bb.mkdirhier(pkgdir)
+            os.chdir(pkgdir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % cvscmd)
+            myret = os.system(cvscmd)
+
+        if myret != 0 or not os.access(moddir, os.R_OK):
+            try:
+                os.rmdir(moddir)
+            except OSError:
+                 pass
+            raise FetchError(ud.module)
+
+        # tar them up to a defined filename
+        if 'fullpath' in ud.parm:
+            os.chdir(pkgdir)
+            myret = os.system("tar -czf %s %s" % (ud.localpath, localdir))
+        else:
+            os.chdir(moddir)
+            os.chdir('..')
+            myret = os.system("tar -czf %s %s" % (ud.localpath, os.path.basename(moddir)))
+
+        if myret != 0:
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise FetchError(ud.module)
diff --git a/bitbake-dev/lib/bb/fetch/git.py b/bitbake-dev/lib/bb/fetch/git.py
new file mode 100644
index 0000000000..f4ae724f87
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/git.py
@@ -0,0 +1,142 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' git implementation
+
+"""
+
+#Copyright (C) 2005 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, re
+import bb
+from   bb    import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import runfetchcmd
+
+def prunedir(topdir):
+    # Delete everything reachable from the directory named in 'topdir'.
+    # CAUTION:  This is dangerous!
+    for root, dirs, files in os.walk(topdir, topdown=False):
+        for name in files:
+            os.remove(os.path.join(root, name))
+        for name in dirs:
+            os.rmdir(os.path.join(root, name))
+
+class Git(Fetch):
+    """Class to fetch a module or modules from git repositories"""
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with git.
+        """
+        return ud.type in ['git']
+
+    def localpath(self, url, ud, d):
+
+        ud.proto = "rsync"
+        if 'protocol' in ud.parm:
+            ud.proto = ud.parm['protocol']
+
+        ud.branch = ud.parm.get("branch", "master")
+
+        tag = Fetch.srcrev_internal_helper(ud, d)
+        if tag is True:
+            ud.tag = self.latest_revision(url, ud, d)   
+        elif tag:
+            ud.tag = tag
+
+        if not ud.tag:
+            ud.tag = self.latest_revision(url, ud, d)   
+
+        if ud.tag == "master":
+            ud.tag = self.latest_revision(url, ud, d)
+
+        ud.localfile = data.expand('git_%s%s_%s.tar.gz' % (ud.host, ud.path.replace('/', '.'), ud.tag), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def go(self, loc, ud, d):
+        """Fetch url"""
+
+        if Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists (or was stashed). Skipping git checkout." % ud.localpath)
+            return
+
+        gitsrcname = '%s%s' % (ud.host, ud.path.replace('/', '.'))
+
+        repofilename = 'git_%s.tar.gz' % (gitsrcname)
+        repofile = os.path.join(data.getVar("DL_DIR", d, 1), repofilename)
+        repodir = os.path.join(data.expand('${GITDIR}', d), gitsrcname)
+
+        coname = '%s' % (ud.tag)
+        codir = os.path.join(repodir, coname)
+
+        if not os.path.exists(repodir):
+            if Fetch.try_mirror(d, repofilename):    
+                bb.mkdirhier(repodir)
+                os.chdir(repodir)
+                runfetchcmd("tar -xzf %s" % (repofile), d)
+            else:
+                runfetchcmd("git clone -n %s://%s%s %s" % (ud.proto, ud.host, ud.path, repodir), d)
+
+        os.chdir(repodir)
+        # Remove all but the .git directory
+        runfetchcmd("rm * -Rf", d)
+        runfetchcmd("git fetch %s://%s%s %s" % (ud.proto, ud.host, ud.path, ud.branch), d)
+        runfetchcmd("git fetch --tags %s://%s%s" % (ud.proto, ud.host, ud.path), d)
+        runfetchcmd("git prune-packed", d)
+        runfetchcmd("git pack-redundant --all | xargs -r rm", d)
+
+        os.chdir(repodir)
+        mirror_tarballs = data.getVar("BB_GENERATE_MIRROR_TARBALLS", d, True)
+        if mirror_tarballs != "0": 
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Creating tarball of git repository")
+            runfetchcmd("tar -czf %s %s" % (repofile, os.path.join(".", ".git", "*") ), d)
+
+        if os.path.exists(codir):
+            prunedir(codir)
+
+        bb.mkdirhier(codir)
+        os.chdir(repodir)
+        runfetchcmd("git read-tree %s" % (ud.tag), d)
+        runfetchcmd("git checkout-index -q -f --prefix=%s -a" % (os.path.join(codir, "git", "")), d)
+
+        os.chdir(codir)
+        bb.msg.note(1, bb.msg.domain.Fetcher, "Creating tarball of git checkout")
+        runfetchcmd("tar -czf %s %s" % (ud.localpath, os.path.join(".", "*") ), d)
+
+        os.chdir(repodir)
+        prunedir(codir)
+
+    def suppports_srcrev(self):
+        return True
+
+    def _revision_key(self, url, ud, d):
+        """
+        Return a unique key for the url
+        """
+        return "git:" + ud.host + ud.path.replace('/', '.')
+
+    def _latest_revision(self, url, ud, d):
+        """
+        Compute the HEAD revision for the url
+        """
+        output = runfetchcmd("git ls-remote %s://%s%s %s" % (ud.proto, ud.host, ud.path, ud.branch), d, True)
+        return output.split()[0]
+
+    def _build_revision(self, url, ud, d):
+        return ud.tag
+
diff --git a/bitbake-dev/lib/bb/fetch/hg.py b/bitbake-dev/lib/bb/fetch/hg.py
new file mode 100644
index 0000000000..ee3bd2f7fe
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/hg.py
@@ -0,0 +1,141 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementation for mercurial DRCS (hg).
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2004        Marcin Juszkiewicz
+# Copyright (C) 2007        Robert Schuster
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import sys
+import bb
+from bb import data
+from bb.fetch import Fetch
+from bb.fetch import FetchError
+from bb.fetch import MissingParameterError
+from bb.fetch import runfetchcmd
+
+class Hg(Fetch):
+    """Class to fetch a from mercurial repositories"""
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with mercurial.
+        """
+        return ud.type in ['hg']
+
+    def localpath(self, url, ud, d):
+        if not "module" in ud.parm:
+            raise MissingParameterError("hg method needs a 'module' parameter")
+
+        ud.module = ud.parm["module"]
+
+        # Create paths to mercurial checkouts
+        relpath = ud.path
+        if relpath.startswith('/'):
+            # Remove leading slash as os.path.join can't cope
+            relpath = relpath[1:]
+        ud.pkgdir = os.path.join(data.expand('${HGDIR}', d), ud.host, relpath)
+        ud.moddir = os.path.join(ud.pkgdir, ud.module)
+
+        if 'rev' in ud.parm:
+            ud.revision = ud.parm['rev']
+
+        ud.localfile = data.expand('%s_%s_%s_%s.tar.gz' % (ud.module.replace('/', '.'), ud.host, ud.path.replace('/', '.'), ud.revision), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def _buildhgcommand(self, ud, d, command):
+        """
+        Build up an hg commandline based on ud
+        command is "fetch", "update", "info"
+        """
+
+        basecmd = data.expand('${FETCHCMD_hg}', d)
+
+        proto = "http"
+        if "proto" in ud.parm:
+            proto = ud.parm["proto"]
+
+        host = ud.host
+        if proto == "file":
+            host = "/"
+            ud.host = "localhost"
+
+        hgroot = host + ud.path
+
+        if command is "info":
+            return "%s identify -i %s://%s/%s" % (basecmd, proto, hgroot, ud.module)
+
+        options = [];
+        if ud.revision:
+            options.append("-r %s" % ud.revision)
+
+        if command is "fetch":
+            cmd = "%s clone %s %s://%s/%s %s" % (basecmd, " ".join(options), proto, hgroot, ud.module, ud.module)
+        elif command is "pull":
+            cmd = "%s pull %s" % (basecmd, " ".join(options))
+        elif command is "update":
+            cmd = "%s update -C %s" % (basecmd, " ".join(options))
+        else:
+            raise FetchError("Invalid hg command %s" % command)
+
+        return cmd
+
+    def go(self, loc, ud, d):
+        """Fetch url"""
+
+        # try to use the tarball stash
+        if Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping hg checkout." % ud.localpath)
+            return
+
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: checking for module directory '" + ud.moddir + "'")
+
+        if os.access(os.path.join(ud.moddir, '.hg'), os.R_OK):
+            updatecmd = self._buildhgcommand(ud, d, "pull")
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Update " + loc)
+            # update sources there
+            os.chdir(ud.moddir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % updatecmd)
+            runfetchcmd(updatecmd, d)
+
+            updatecmd = self._buildhgcommand(ud, d, "update")
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % updatecmd)
+            runfetchcmd(updatecmd, d)
+        else:
+            fetchcmd = self._buildhgcommand(ud, d, "fetch")
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
+            # check out sources there
+            bb.mkdirhier(ud.pkgdir)
+            os.chdir(ud.pkgdir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % fetchcmd)
+            runfetchcmd(fetchcmd, d)
+
+        os.chdir(ud.pkgdir)
+        try:
+            runfetchcmd("tar -czf %s %s" % (ud.localpath, ud.module), d)
+        except:
+            t, v, tb = sys.exc_info()
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise t, v, tb
diff --git a/bitbake-dev/lib/bb/fetch/local.py b/bitbake-dev/lib/bb/fetch/local.py
new file mode 100644
index 0000000000..54d598ae89
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/local.py
@@ -0,0 +1,72 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+Classes for obtaining upstream sources for the
+BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+
+class Local(Fetch):
+    def supports(self, url, urldata, d):
+        """
+        Check to see if a given url can be fetched with cvs.
+        """
+        return urldata.type in ['file','patch']
+
+    def localpath(self, url, urldata, d):
+        """
+        Return the local filename of a given url assuming a successful fetch.
+        """
+        path = url.split("://")[1]
+        path = path.split(";")[0]
+        newpath = path
+        if path[0] != "/":
+            filespath = data.getVar('FILESPATH', d, 1)
+            if filespath:
+                newpath = bb.which(filespath, path)
+            if not newpath:
+                filesdir = data.getVar('FILESDIR', d, 1)
+                if filesdir:
+                    newpath = os.path.join(filesdir, path)
+        # We don't set localfile as for this fetcher the file is already local!
+        return newpath
+
+    def go(self, url, urldata, d):
+        """Fetch urls (no-op for Local method)"""
+        # no need to fetch local files, we'll deal with them in place.
+        return 1
+
+    def checkstatus(self, url, urldata, d):
+        """
+        Check the status of the url
+        """
+        if urldata.localpath.find("*") != -1:
+            bb.msg.note(1, bb.msg.domain.Fetcher, "URL %s looks like a glob and was therefore not checked." % url)      
+            return True
+        if os.path.exists(urldata.localpath):
+           return True
+        return False
diff --git a/bitbake-dev/lib/bb/fetch/perforce.py b/bitbake-dev/lib/bb/fetch/perforce.py
new file mode 100644
index 0000000000..b594d2bde2
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/perforce.py
@@ -0,0 +1,213 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+Classes for obtaining upstream sources for the
+BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import MissingParameterError
+
+class Perforce(Fetch):
+    def supports(self, url, ud, d):
+        return ud.type in ['p4']
+
+    def doparse(url,d):
+        parm = {}
+        path = url.split("://")[1]
+        delim = path.find("@");
+        if delim != -1:
+            (user,pswd,host,port) = path.split('@')[0].split(":")
+            path = path.split('@')[1]
+        else:
+            (host,port) = data.getVar('P4PORT', d).split(':')
+            user = ""
+            pswd = ""
+
+        if path.find(";") != -1:
+            keys=[]
+            values=[]
+            plist = path.split(';')
+            for item in plist:
+                if item.count('='):
+                    (key,value) = item.split('=')
+                    keys.append(key)
+                    values.append(value)
+
+            parm = dict(zip(keys,values))
+        path = "//" + path.split(';')[0]
+        host += ":%s" % (port)
+        parm["cset"] = Perforce.getcset(d, path, host, user, pswd, parm)
+
+        return host,path,user,pswd,parm
+    doparse = staticmethod(doparse)
+
+    def getcset(d, depot,host,user,pswd,parm):
+        if "cset" in parm:
+            return parm["cset"];
+        if user:
+            data.setVar('P4USER', user, d)
+        if pswd:
+            data.setVar('P4PASSWD', pswd, d)
+        if host:
+            data.setVar('P4PORT', host, d)
+
+        p4date = data.getVar("P4DATE", d, 1)
+        if "revision" in parm:
+            depot += "#%s" % (parm["revision"])
+        elif "label" in parm:
+            depot += "@%s" % (parm["label"])
+        elif p4date:
+            depot += "@%s" % (p4date)
+
+        p4cmd = data.getVar('FETCHCOMMAND_p4', d, 1)
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s changes -m 1 %s" % (p4cmd, depot))
+        p4file = os.popen("%s changes -m 1 %s" % (p4cmd,depot))
+        cset = p4file.readline().strip()
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "READ %s" % (cset))
+        if not cset:
+            return -1
+
+        return cset.split(' ')[1]
+    getcset = staticmethod(getcset)
+
+    def localpath(self, url, ud, d):        
+
+        (host,path,user,pswd,parm) = Perforce.doparse(url,d)
+
+        # If a label is specified, we use that as our filename
+
+        if "label" in parm:
+            ud.localfile = "%s.tar.gz" % (parm["label"])
+            return os.path.join(data.getVar("DL_DIR", d, 1), ud.localfile)
+
+        base = path
+        which = path.find('/...')
+        if which != -1:
+            base = path[:which]
+
+        if base[0] == "/":
+            base = base[1:]
+
+        cset = Perforce.getcset(d, path, host, user, pswd, parm)
+
+        ud.localfile = data.expand('%s+%s+%s.tar.gz' % (host,base.replace('/', '.'), cset), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, 1), ud.localfile)
+
+    def go(self, loc, ud, d):
+        """
+        Fetch urls
+        """
+
+        # try to use the tarball stash
+        if Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping perforce checkout." % ud.localpath)
+            return
+
+        (host,depot,user,pswd,parm) = Perforce.doparse(loc, d)
+
+        if depot.find('/...') != -1:
+            path = depot[:depot.find('/...')]
+        else:
+            path = depot
+
+        if "module" in parm:
+            module = parm["module"]
+        else:
+            module = os.path.basename(path)
+
+        localdata = data.createCopy(d)
+        data.setVar('OVERRIDES', "p4:%s" % data.getVar('OVERRIDES', localdata), localdata)
+        data.update_data(localdata)
+
+        # Get the p4 command
+        if user:
+            data.setVar('P4USER', user, localdata)
+
+        if pswd:
+            data.setVar('P4PASSWD', pswd, localdata)
+
+        if host:
+            data.setVar('P4PORT', host, localdata)
+
+        p4cmd = data.getVar('FETCHCOMMAND', localdata, 1)
+
+        # create temp directory
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: creating temporary directory")
+        bb.mkdirhier(data.expand('${WORKDIR}', localdata))
+        data.setVar('TMPBASE', data.expand('${WORKDIR}/oep4.XXXXXX', localdata), localdata)
+        tmppipe = os.popen(data.getVar('MKTEMPDIRCMD', localdata, 1) or "false")
+        tmpfile = tmppipe.readline().strip()
+        if not tmpfile:
+            bb.error("Fetch: unable to create temporary directory.. make sure 'mktemp' is in the PATH.")
+            raise FetchError(module)
+
+        if "label" in parm:
+            depot = "%s@%s" % (depot,parm["label"])
+        else:
+            cset = Perforce.getcset(d, depot, host, user, pswd, parm)
+            depot = "%s@%s" % (depot,cset)
+
+        os.chdir(tmpfile)
+        bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
+        bb.msg.note(1, bb.msg.domain.Fetcher, "%s files %s" % (p4cmd, depot))
+        p4file = os.popen("%s files %s" % (p4cmd, depot))
+
+        if not p4file:
+            bb.error("Fetch: unable to get the P4 files from %s" % (depot))
+            raise FetchError(module)
+
+        count = 0
+
+        for file in p4file: 
+            list = file.split()
+
+            if list[2] == "delete":
+                continue
+
+            dest = list[0][len(path)+1:]
+            where = dest.find("#")
+
+            os.system("%s print -o %s/%s %s" % (p4cmd, module,dest[:where],list[0]))
+            count = count + 1
+            
+        if count == 0:
+            bb.error("Fetch:  No files gathered from the P4 fetch")
+            raise FetchError(module)
+
+        myret = os.system("tar -czf %s %s" % (ud.localpath, module))
+        if myret != 0:
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise FetchError(module)
+        # cleanup
+        os.system('rm -rf %s' % tmpfile)
+
+
diff --git a/bitbake-dev/lib/bb/fetch/ssh.py b/bitbake-dev/lib/bb/fetch/ssh.py
new file mode 100644
index 0000000000..81a9892dcc
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/ssh.py
@@ -0,0 +1,120 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+'''
+BitBake 'Fetch' implementations
+
+This implementation is for Secure Shell (SSH), and attempts to comply with the
+IETF secsh internet draft:
+    http://tools.ietf.org/wg/secsh/draft-ietf-secsh-scp-sftp-ssh-uri/
+
+    Currently does not support the sftp parameters, as this uses scp
+    Also does not support the 'fingerprint' connection parameter.
+
+'''
+
+# Copyright (C) 2006  OpenedHand Ltd.
+#
+#
+# Based in part on svk.py:
+#    Copyright (C) 2006 Holger Hans Peter Freyther
+#    Based on svn.py:
+#        Copyright (C) 2003, 2004  Chris Larson
+#        Based on functions from the base bb module:
+#            Copyright 2003 Holger Schurig
+#
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import re, os
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import MissingParameterError
+
+
+__pattern__ = re.compile(r'''
+ \s*                 # Skip leading whitespace
+ ssh://              # scheme
+ (                   # Optional username/password block
+  (?P<user>\S+)      # username
+  (:(?P<pass>\S+))?  # colon followed by the password (optional)
+ )?
+ (?P<cparam>(;[^;]+)*)?  # connection parameters block (optional)
+ @
+ (?P<host>\S+?)          # non-greedy match of the host
+ (:(?P<port>[0-9]+))?    # colon followed by the port (optional)
+ /
+ (?P<path>[^;]+)         # path on the remote system, may be absolute or relative,
+                         # and may include the use of '~' to reference the remote home
+                         # directory
+ (?P<sparam>(;[^;]+)*)?  # parameters block (optional)
+ $
+''', re.VERBOSE)
+
+class SSH(Fetch):
+    '''Class to fetch a module or modules via Secure Shell'''
+
+    def supports(self, url, urldata, d):
+        return __pattern__.match(url) != None
+
+    def localpath(self, url, urldata, d):
+        m = __pattern__.match(url)
+        path = m.group('path')
+        host = m.group('host')
+        lpath = os.path.join(data.getVar('DL_DIR', d, True), host, os.path.basename(path))
+        return lpath
+
+    def go(self, url, urldata, d):
+        dldir = data.getVar('DL_DIR', d, 1)
+
+        m = __pattern__.match(url)
+        path = m.group('path')
+        host = m.group('host')
+        port = m.group('port')
+        user = m.group('user')
+        password = m.group('pass')
+
+        ldir = os.path.join(dldir, host)
+        lpath = os.path.join(ldir, os.path.basename(path))
+
+        if not os.path.exists(ldir):
+            os.makedirs(ldir)
+
+        if port:
+            port = '-P %s' % port
+        else:
+            port = ''
+
+        if user:
+            fr = user
+            if password:
+                fr += ':%s' % password
+            fr += '@%s' % host
+        else:
+            fr = host
+        fr += ':%s' % path
+
+
+        import commands
+        cmd = 'scp -B -r %s %s %s/' % (
+            port,
+            commands.mkarg(fr),
+            commands.mkarg(ldir)
+        )
+
+        (exitstatus, output) = commands.getstatusoutput(cmd)
+        if exitstatus != 0:
+            print output
+            raise FetchError('Unable to fetch %s' % url)
diff --git a/bitbake-dev/lib/bb/fetch/svk.py b/bitbake-dev/lib/bb/fetch/svk.py
new file mode 100644
index 0000000000..d863ccb6e0
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/svk.py
@@ -0,0 +1,109 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+This implementation is for svk. It is based on the svn implementation
+
+"""
+
+# Copyright (C) 2006 Holger Hans Peter Freyther
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import MissingParameterError
+
+class Svk(Fetch):
+    """Class to fetch a module or modules from svk repositories"""
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with cvs.
+        """
+        return ud.type in ['svk']
+
+    def localpath(self, url, ud, d):
+        if not "module" in ud.parm:
+            raise MissingParameterError("svk method needs a 'module' parameter")
+        else:
+            ud.module = ud.parm["module"]
+
+        ud.revision = ""
+        if 'rev' in ud.parm:
+            ud.revision = ud.parm['rev']
+
+        ud.localfile = data.expand('%s_%s_%s_%s_%s.tar.gz' % (ud.module.replace('/', '.'), ud.host, ud.path.replace('/', '.'), ud.revision, ud.date), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def forcefetch(self, url, ud, d):
+        if (ud.date == "now"):
+            return True
+        return False
+
+    def go(self, loc, ud, d):
+        """Fetch urls"""
+
+        if not self.forcefetch(loc, ud, d) and Fetch.try_mirror(d, ud.localfile):
+            return
+
+        svkroot = ud.host + ud.path
+
+        svkcmd = "svk co -r {%s} %s/%s" % (date, svkroot, ud.module)
+
+        if ud.revision:
+            svkcmd = "svk co -r %s/%s" % (ud.revision, svkroot, ud.module)
+
+        # create temp directory
+        localdata = data.createCopy(d)
+        data.update_data(localdata)
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: creating temporary directory")
+        bb.mkdirhier(data.expand('${WORKDIR}', localdata))
+        data.setVar('TMPBASE', data.expand('${WORKDIR}/oesvk.XXXXXX', localdata), localdata)
+        tmppipe = os.popen(data.getVar('MKTEMPDIRCMD', localdata, 1) or "false")
+        tmpfile = tmppipe.readline().strip()
+        if not tmpfile:
+            bb.msg.error(bb.msg.domain.Fetcher, "Fetch: unable to create temporary directory.. make sure 'mktemp' is in the PATH.")
+            raise FetchError(ud.module)
+
+        # check out sources there
+        os.chdir(tmpfile)
+        bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
+        bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % svkcmd)
+        myret = os.system(svkcmd)
+        if myret != 0:
+            try:
+                os.rmdir(tmpfile)
+            except OSError:
+                pass
+            raise FetchError(ud.module)
+
+        os.chdir(os.path.join(tmpfile, os.path.dirname(ud.module)))
+        # tar them up to a defined filename
+        myret = os.system("tar -czf %s %s" % (ud.localpath, os.path.basename(ud.module)))
+        if myret != 0:
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise FetchError(ud.module)
+        # cleanup
+        os.system('rm -rf %s' % tmpfile)
diff --git a/bitbake-dev/lib/bb/fetch/svn.py b/bitbake-dev/lib/bb/fetch/svn.py
new file mode 100644
index 0000000000..5e5b31b3ad
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/svn.py
@@ -0,0 +1,204 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementation for svn.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2004        Marcin Juszkiewicz
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import sys
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import MissingParameterError
+from   bb.fetch import runfetchcmd
+
+class Svn(Fetch):
+    """Class to fetch a module or modules from svn repositories"""
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with svn.
+        """
+        return ud.type in ['svn']
+
+    def localpath(self, url, ud, d):
+        if not "module" in ud.parm:
+            raise MissingParameterError("svn method needs a 'module' parameter")
+
+        ud.module = ud.parm["module"]
+
+        # Create paths to svn checkouts
+        relpath = ud.path
+        if relpath.startswith('/'):
+            # Remove leading slash as os.path.join can't cope
+            relpath = relpath[1:]
+        ud.pkgdir = os.path.join(data.expand('${SVNDIR}', d), ud.host, relpath)
+        ud.moddir = os.path.join(ud.pkgdir, ud.module)
+
+        if 'rev' in ud.parm:
+            ud.date = ""
+            ud.revision = ud.parm['rev']
+        elif 'date' in ud.date:
+            ud.date = ud.parm['date']
+            ud.revision = ""
+        else:
+            #
+            # ***Nasty hack***
+            # If DATE in unexpanded PV, use ud.date (which is set from SRCDATE)
+            # Should warn people to switch to SRCREV here
+            #
+            pv = data.getVar("PV", d, 0)
+            if "DATE" in pv:
+                ud.revision = ""
+            else:
+                rev = Fetch.srcrev_internal_helper(ud, d)
+                if rev is True:
+                    ud.revision = self.latest_revision(url, ud, d)
+                    ud.date = ""
+                elif rev:
+                    ud.revision = rev
+                    ud.date = ""
+                else:
+                    ud.revision = ""            
+
+        ud.localfile = data.expand('%s_%s_%s_%s_%s.tar.gz' % (ud.module.replace('/', '.'), ud.host, ud.path.replace('/', '.'), ud.revision, ud.date), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def _buildsvncommand(self, ud, d, command):
+        """
+        Build up an svn commandline based on ud
+        command is "fetch", "update", "info"
+        """
+
+        basecmd = data.expand('${FETCHCMD_svn}', d)
+
+        proto = "svn"
+        if "proto" in ud.parm:
+            proto = ud.parm["proto"]
+
+        svn_rsh = None
+        if proto == "svn+ssh" and "rsh" in ud.parm:
+            svn_rsh = ud.parm["rsh"]
+
+        svnroot = ud.host + ud.path
+
+        # either use the revision, or SRCDATE in braces,
+        options = []
+
+        if ud.user:
+            options.append("--username %s" % ud.user)
+
+        if ud.pswd:
+            options.append("--password %s" % ud.pswd)
+
+        if command is "info":
+            svncmd = "%s info %s %s://%s/%s/" % (basecmd, " ".join(options), proto, svnroot, ud.module)
+        else:
+            if ud.revision:
+                options.append("-r %s" % ud.revision)
+            elif ud.date:
+                options.append("-r {%s}" % ud.date)
+
+            if command is "fetch":
+                svncmd = "%s co %s %s://%s/%s %s" % (basecmd, " ".join(options), proto, svnroot, ud.module, ud.module)
+            elif command is "update":
+                svncmd = "%s update %s" % (basecmd, " ".join(options))
+            else:
+                raise FetchError("Invalid svn command %s" % command)
+
+        if svn_rsh:
+            svncmd = "svn_RSH=\"%s\" %s" % (svn_rsh, svncmd)
+
+        return svncmd
+
+    def go(self, loc, ud, d):
+        """Fetch url"""
+
+        # try to use the tarball stash
+        if Fetch.try_mirror(d, ud.localfile):
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "%s already exists or was mirrored, skipping svn checkout." % ud.localpath)
+            return
+
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "Fetch: checking for module directory '" + ud.moddir + "'")
+
+        if os.access(os.path.join(ud.moddir, '.svn'), os.R_OK):
+            svnupdatecmd = self._buildsvncommand(ud, d, "update")
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Update " + loc)
+            # update sources there
+            os.chdir(ud.moddir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % svnupdatecmd)
+            runfetchcmd(svnupdatecmd, d)
+        else:
+            svnfetchcmd = self._buildsvncommand(ud, d, "fetch")
+            bb.msg.note(1, bb.msg.domain.Fetcher, "Fetch " + loc)
+            # check out sources there
+            bb.mkdirhier(ud.pkgdir)
+            os.chdir(ud.pkgdir)
+            bb.msg.debug(1, bb.msg.domain.Fetcher, "Running %s" % svnfetchcmd)
+            runfetchcmd(svnfetchcmd, d)
+
+        os.chdir(ud.pkgdir)
+        # tar them up to a defined filename
+        try:
+            runfetchcmd("tar -czf %s %s" % (ud.localpath, ud.module), d)
+        except:
+            t, v, tb = sys.exc_info()
+            try:
+                os.unlink(ud.localpath)
+            except OSError:
+                pass
+            raise t, v, tb
+
+    def suppports_srcrev(self):
+        return True
+
+    def _revision_key(self, url, ud, d):
+        """
+        Return a unique key for the url
+        """
+        return "svn:" + ud.moddir
+
+    def _latest_revision(self, url, ud, d):
+        """
+        Return the latest upstream revision number
+        """
+        bb.msg.debug(2, bb.msg.domain.Fetcher, "SVN fetcher hitting network for %s" % url)
+
+        output = runfetchcmd("LANG=C LC_ALL=C " + self._buildsvncommand(ud, d, "info"), d, True)
+
+        revision = None
+        for line in output.splitlines():
+            if "Last Changed Rev" in line:
+                revision = line.split(":")[1].strip()
+
+        return revision
+
+    def _sortable_revision(self, url, ud, d):
+        """
+        Return a sortable revision number which in our case is the revision number
+        """
+
+        return self._build_revision(url, ud, d)
+
+    def _build_revision(self, url, ud, d):
+        return ud.revision
diff --git a/bitbake-dev/lib/bb/fetch/wget.py b/bitbake-dev/lib/bb/fetch/wget.py
new file mode 100644
index 0000000000..739d5a1bc6
--- /dev/null
+++ b/bitbake-dev/lib/bb/fetch/wget.py
@@ -0,0 +1,105 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'Fetch' implementations
+
+Classes for obtaining upstream sources for the
+BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+import os, re
+import bb
+from   bb import data
+from   bb.fetch import Fetch
+from   bb.fetch import FetchError
+from   bb.fetch import uri_replace
+
+class Wget(Fetch):
+    """Class to fetch urls via 'wget'"""
+    def supports(self, url, ud, d):
+        """
+        Check to see if a given url can be fetched with cvs.
+        """
+        return ud.type in ['http','https','ftp']
+
+    def localpath(self, url, ud, d):
+
+        url = bb.encodeurl([ud.type, ud.host, ud.path, ud.user, ud.pswd, {}])
+        ud.basename = os.path.basename(ud.path)
+        ud.localfile = data.expand(os.path.basename(url), d)
+
+        return os.path.join(data.getVar("DL_DIR", d, True), ud.localfile)
+
+    def go(self, uri, ud, d, checkonly = False):
+        """Fetch urls"""
+
+        def fetch_uri(uri, ud, d):
+            if checkonly:
+                fetchcmd = data.getVar("CHECKCOMMAND", d, 1)
+            elif os.path.exists(ud.localpath):
+                # file exists, but we didnt complete it.. trying again..
+                fetchcmd = data.getVar("RESUMECOMMAND", d, 1)
+            else:
+                fetchcmd = data.getVar("FETCHCOMMAND", d, 1)
+
+            bb.msg.note(1, bb.msg.domain.Fetcher, "fetch " + uri)
+            fetchcmd = fetchcmd.replace("${URI}", uri)
+            fetchcmd = fetchcmd.replace("${FILE}", ud.basename)
+            bb.msg.debug(2, bb.msg.domain.Fetcher, "executing " + fetchcmd)
+            ret = os.system(fetchcmd)
+            if ret != 0:
+                return False
+
+            # Sanity check since wget can pretend it succeed when it didn't
+            # Also, this used to happen if sourceforge sent us to the mirror page
+            if not os.path.exists(ud.localpath):
+                bb.msg.debug(2, bb.msg.domain.Fetcher, "The fetch command for %s returned success but %s doesn't exist?..." % (uri, ud.localpath))
+                return False
+
+            return True
+
+        localdata = data.createCopy(d)
+        data.setVar('OVERRIDES', "wget:" + data.getVar('OVERRIDES', localdata), localdata)
+        data.update_data(localdata)
+
+        premirrors = [ i.split() for i in (data.getVar('PREMIRRORS', localdata, 1) or "").split('\n') if i ]
+        for (find, replace) in premirrors:
+            newuri = uri_replace(uri, find, replace, d)
+            if newuri != uri:
+                if fetch_uri(newuri, ud, localdata):
+                    return True
+
+        if fetch_uri(uri, ud, localdata):
+            return True
+
+        # try mirrors
+        mirrors = [ i.split() for i in (data.getVar('MIRRORS', localdata, 1) or "").split('\n') if i ]
+        for (find, replace) in mirrors:
+            newuri = uri_replace(uri, find, replace, d)
+            if newuri != uri:
+                if fetch_uri(newuri, ud, localdata):
+                    return True
+
+        raise FetchError(uri)
+
+
+    def checkstatus(self, uri, ud, d):
+        return self.go(uri, ud, d, True)
diff --git a/bitbake-dev/lib/bb/manifest.py b/bitbake-dev/lib/bb/manifest.py
new file mode 100644
index 0000000000..4e4b7d98ec
--- /dev/null
+++ b/bitbake-dev/lib/bb/manifest.py
@@ -0,0 +1,144 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2003, 2004  Chris Larson
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, sys
+import bb, bb.data
+
+def getfields(line):
+    fields = {}
+    fieldmap = ( "pkg", "src", "dest", "type", "mode", "uid", "gid", "major", "minor", "start", "inc", "count" )
+    for f in xrange(len(fieldmap)):
+        fields[fieldmap[f]] = None
+
+    if not line:
+        return None
+
+    splitline = line.split()
+    if not len(splitline):
+        return None
+
+    try:
+        for f in xrange(len(fieldmap)):
+            if splitline[f] == '-':
+                continue
+            fields[fieldmap[f]] = splitline[f]
+    except IndexError:
+        pass
+    return fields
+
+def parse (mfile, d):
+    manifest = []
+    while 1:
+        line = mfile.readline()
+        if not line:
+            break
+        if line.startswith("#"):
+            continue
+        fields = getfields(line)
+        if not fields:
+            continue
+        manifest.append(fields)
+    return manifest
+
+def emit (func, manifest, d):
+#str = "%s () {\n" % func
+    str = ""
+    for line in manifest:
+        emittedline = emit_line(func, line, d)
+        if not emittedline:
+            continue
+        str += emittedline + "\n"
+#       str += "}\n"
+    return str
+
+def mangle (func, line, d):
+    import copy
+    newline = copy.copy(line)
+    src = bb.data.expand(newline["src"], d)
+
+    if src:
+        if not os.path.isabs(src):
+            src = "${WORKDIR}/" + src
+
+    dest = newline["dest"]
+    if not dest:
+        return
+
+    if dest.startswith("/"):
+        dest = dest[1:]
+
+    if func is "do_install":
+        dest = "${D}/" + dest
+
+    elif func is "do_populate":
+        dest = "${WORKDIR}/install/" + newline["pkg"] + "/" + dest
+
+    elif func is "do_stage":
+        varmap = {}
+        varmap["${bindir}"] = "${STAGING_DIR}/${HOST_SYS}/bin"
+        varmap["${libdir}"] = "${STAGING_DIR}/${HOST_SYS}/lib"
+        varmap["${includedir}"] = "${STAGING_DIR}/${HOST_SYS}/include"
+        varmap["${datadir}"] = "${STAGING_DATADIR}"
+
+        matched = 0
+        for key in varmap.keys():
+            if dest.startswith(key):
+                dest = varmap[key] + "/" + dest[len(key):]
+                matched = 1
+        if not matched:
+            newline = None
+            return
+    else:
+        newline = None
+        return
+
+    newline["src"] = src
+    newline["dest"] = dest
+    return newline
+
+def emit_line (func, line, d):
+    import copy
+    newline = copy.deepcopy(line)
+    newline = mangle(func, newline, d)
+    if not newline:
+        return None
+
+    str = ""
+    type = newline["type"]
+    mode = newline["mode"]
+    src = newline["src"]
+    dest = newline["dest"]
+    if type is "d":
+        str = "install -d "
+        if mode:
+            str += "-m %s " % mode
+        str += dest
+    elif type is "f":
+        if not src:
+            return None
+        if dest.endswith("/"):
+            str = "install -d "
+            str += dest + "\n"
+            str += "install "
+        else:
+            str = "install -D "
+        if mode:
+            str += "-m %s " % mode
+        str += src + " " + dest
+    del newline
+    return str
diff --git a/bitbake-dev/lib/bb/methodpool.py b/bitbake-dev/lib/bb/methodpool.py
new file mode 100644
index 0000000000..f43c4a0580
--- /dev/null
+++ b/bitbake-dev/lib/bb/methodpool.py
@@ -0,0 +1,84 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+#
+# Copyright (C)       2006 Holger Hans Peter Freyther
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+"""
+    What is a method pool?
+
+    BitBake has a global method scope where .bb, .inc and .bbclass
+    files can install methods. These methods are parsed from strings.
+    To avoid recompiling and executing these string we introduce
+    a method pool to do this task.
+
+    This pool will be used to compile and execute the functions. It
+    will be smart enough to 
+"""
+
+from bb.utils import better_compile, better_exec
+from bb       import error
+
+# A dict of modules we have handled
+# it is the number of .bbclasses + x in size
+_parsed_methods = { }
+_parsed_fns     = { }
+
+def insert_method(modulename, code, fn):
+    """
+    Add code of a module should be added. The methods
+    will be simply added, no checking will be done
+    """
+    comp = better_compile(code, "<bb>", fn )
+    better_exec(comp, __builtins__, code, fn)
+
+    # now some instrumentation
+    code = comp.co_names
+    for name in code:
+        if name in ['None', 'False']:
+            continue
+        elif name in _parsed_fns and not _parsed_fns[name] == modulename:
+            error( "Error Method already seen: %s in' %s' now in '%s'" % (name, _parsed_fns[name], modulename))
+        else:
+            _parsed_fns[name] = modulename
+
+def check_insert_method(modulename, code, fn):
+    """
+    Add the code if it wasnt added before. The module
+    name will be used for that 
+
+    Variables:
+        @modulename a short name e.g. base.bbclass
+        @code The actual python code
+        @fn   The filename from the outer file
+    """
+    if not modulename in _parsed_methods:
+        return insert_method(modulename, code, fn)
+    _parsed_methods[modulename] = 1
+
+def parsed_module(modulename):
+    """
+    Inform me file xyz was parsed
+    """
+    return modulename in _parsed_methods
+
+
+def get_parsed_dict():
+    """
+    shortcut
+    """
+    return _parsed_methods    
diff --git a/bitbake-dev/lib/bb/msg.py b/bitbake-dev/lib/bb/msg.py
new file mode 100644
index 0000000000..7aa0a27d25
--- /dev/null
+++ b/bitbake-dev/lib/bb/msg.py
@@ -0,0 +1,125 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'msg' implementation
+
+Message handling infrastructure for bitbake
+
+"""
+
+# Copyright (C) 2006        Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import sys, os, re, bb
+from bb import utils, event
+
+debug_level = {}
+
+verbose = False
+
+domain = bb.utils.Enum(
+    'Build',
+    'Cache',
+    'Collection',
+    'Data',
+    'Depends',
+    'Fetcher',
+    'Parsing',
+    'PersistData',
+    'Provider',
+    'RunQueue',
+    'TaskData',
+    'Util')
+
+
+class MsgBase(bb.event.Event):
+    """Base class for messages"""
+
+    def __init__(self, msg, d ):
+        self._message = msg
+        event.Event.__init__(self, d)
+
+class MsgDebug(MsgBase):
+    """Debug Message"""
+
+class MsgNote(MsgBase):
+    """Note Message"""
+
+class MsgWarn(MsgBase):
+    """Warning Message"""
+
+class MsgError(MsgBase):
+    """Error Message"""
+
+class MsgFatal(MsgBase):
+    """Fatal Message"""
+
+class MsgPlain(MsgBase):
+    """General output"""
+
+#
+# Message control functions
+#
+
+def set_debug_level(level):
+    bb.msg.debug_level = {}
+    for domain in bb.msg.domain:
+        bb.msg.debug_level[domain] = level
+    bb.msg.debug_level['default'] = level
+
+def set_verbose(level):
+    bb.msg.verbose = level
+
+def set_debug_domains(domains):
+    for domain in domains:
+        found = False
+        for ddomain in bb.msg.domain:
+            if domain == str(ddomain):
+                bb.msg.debug_level[ddomain] = bb.msg.debug_level[ddomain] + 1
+                found = True
+        if not found:
+            bb.msg.warn(None, "Logging domain %s is not valid, ignoring" % domain)
+
+#
+# Message handling functions
+#
+
+def debug(level, domain, msg, fn = None):
+    if not domain:
+        domain = 'default'
+    if debug_level[domain] >= level:
+        bb.event.fire(MsgDebug(msg, None))
+
+def note(level, domain, msg, fn = None):
+    if not domain:
+        domain = 'default'
+    if level == 1 or verbose or debug_level[domain] >= 1:
+        bb.event.fire(MsgNote(msg, None))
+
+def warn(domain, msg, fn = None):
+    bb.event.fire(MsgWarn(msg, None))
+
+def error(domain, msg, fn = None):
+    bb.event.fire(MsgError(msg, None))
+    print 'ERROR: ' + msg
+
+def fatal(domain, msg, fn = None):
+    bb.event.fire(MsgFatal(msg, None))
+    print 'FATAL: ' + msg
+    sys.exit(1)
+
+def plain(msg, fn = None):
+    bb.event.fire(MsgPlain(msg, None))
+
diff --git a/bitbake-dev/lib/bb/parse/__init__.py b/bitbake-dev/lib/bb/parse/__init__.py
new file mode 100644
index 0000000000..3c9ba8e6da
--- /dev/null
+++ b/bitbake-dev/lib/bb/parse/__init__.py
@@ -0,0 +1,80 @@
+"""
+BitBake Parsers
+
+File parsers for the BitBake build tools.
+
+"""
+
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+__all__ = [ 'ParseError', 'SkipPackage', 'cached_mtime', 'mark_dependency',
+            'supports', 'handle', 'init' ]
+handlers = []
+
+import bb, os
+
+class ParseError(Exception):
+    """Exception raised when parsing fails"""
+
+class SkipPackage(Exception):
+    """Exception raised to skip this package"""
+
+__mtime_cache = {}
+def cached_mtime(f):
+    if not __mtime_cache.has_key(f):
+        __mtime_cache[f] = os.stat(f)[8]
+    return __mtime_cache[f]
+
+def cached_mtime_noerror(f):
+    if not __mtime_cache.has_key(f):
+        try:
+            __mtime_cache[f] = os.stat(f)[8]
+        except OSError:
+            return 0
+    return __mtime_cache[f]
+
+def mark_dependency(d, f):
+    if f.startswith('./'):
+        f = "%s/%s" % (os.getcwd(), f[2:])
+    deps = bb.data.getVar('__depends', d) or []
+    deps.append( (f, cached_mtime(f)) )
+    bb.data.setVar('__depends', deps, d)
+
+def supports(fn, data):
+    """Returns true if we have a handler for this file, false otherwise"""
+    for h in handlers:
+        if h['supports'](fn, data):
+            return 1
+    return 0
+
+def handle(fn, data, include = 0):
+    """Call the handler that is appropriate for this file"""
+    for h in handlers:
+        if h['supports'](fn, data):
+            return h['handle'](fn, data, include)
+    raise ParseError("%s is not a BitBake file" % fn)
+
+def init(fn, data):
+    for h in handlers:
+        if h['supports'](fn):
+            return h['init'](data)
+
+
+from parse_py import __version__, ConfHandler, BBHandler
diff --git a/bitbake-dev/lib/bb/parse/parse_py/BBHandler.py b/bitbake-dev/lib/bb/parse/parse_py/BBHandler.py
new file mode 100644
index 0000000000..e9b950acbd
--- /dev/null
+++ b/bitbake-dev/lib/bb/parse/parse_py/BBHandler.py
@@ -0,0 +1,416 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+   class for handling .bb files
+
+   Reads a .bb file and obtains its metadata
+
+"""
+
+
+#  Copyright (C) 2003, 2004  Chris Larson
+#  Copyright (C) 2003, 2004  Phil Blundell
+#   
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import re, bb, os, sys, time
+import bb.fetch, bb.build, bb.utils
+from bb import data, fetch, methodpool
+
+from ConfHandler import include, localpath, obtain, init
+from bb.parse import ParseError
+
+__func_start_regexp__    = re.compile( r"(((?P<py>python)|(?P<fr>fakeroot))\s*)*(?P<func>[\w\.\-\+\{\}\$]+)?\s*\(\s*\)\s*{$" )
+__inherit_regexp__       = re.compile( r"inherit\s+(.+)" )
+__export_func_regexp__   = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" )
+__addtask_regexp__       = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*")
+__addhandler_regexp__    = re.compile( r"addhandler\s+(.+)" )
+__def_regexp__           = re.compile( r"def\s+(\w+).*:" )
+__python_func_regexp__   = re.compile( r"(\s+.*)|(^$)" )
+__word__ = re.compile(r"\S+")
+
+__infunc__ = ""
+__inpython__ = False
+__body__   = []
+__classname__ = ""
+classes = [ None, ]
+
+# We need to indicate EOF to the feeder. This code is so messy that
+# factoring it out to a close_parse_file method is out of question.
+# We will use the IN_PYTHON_EOF as an indicator to just close the method
+#
+# The two parts using it are tightly integrated anyway
+IN_PYTHON_EOF = -9999999999999
+
+__parsed_methods__ = methodpool.get_parsed_dict()
+
+def supports(fn, d):
+    localfn = localpath(fn, d)
+    return localfn[-3:] == ".bb" or localfn[-8:] == ".bbclass" or localfn[-4:] == ".inc"
+
+def inherit(files, d):
+    __inherit_cache = data.getVar('__inherit_cache', d) or []
+    fn = ""
+    lineno = 0
+    files = data.expand(files, d)
+    for file in files:
+        if file[0] != "/" and file[-8:] != ".bbclass":
+            file = os.path.join('classes', '%s.bbclass' % file)
+
+        if not file in __inherit_cache:
+            bb.msg.debug(2, bb.msg.domain.Parsing, "BB %s:%d: inheriting %s" % (fn, lineno, file))
+            __inherit_cache.append( file )
+            data.setVar('__inherit_cache', __inherit_cache, d)
+            include(fn, file, d, "inherit")
+            __inherit_cache = data.getVar('__inherit_cache', d) or []
+
+def handle(fn, d, include = 0):
+    global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __residue__
+    __body__ = []
+    __infunc__ = ""
+    __classname__ = ""
+    __residue__ = []
+
+    if include == 0:
+        bb.msg.debug(2, bb.msg.domain.Parsing, "BB " + fn + ": handle(data)")
+    else:
+        bb.msg.debug(2, bb.msg.domain.Parsing, "BB " + fn + ": handle(data, include)")
+
+    (root, ext) = os.path.splitext(os.path.basename(fn))
+    base_name = "%s%s" % (root,ext)
+    init(d)
+
+    if ext == ".bbclass":
+        __classname__ = root
+        classes.append(__classname__)
+        __inherit_cache = data.getVar('__inherit_cache', d) or []
+        if not fn in __inherit_cache:
+            __inherit_cache.append(fn)
+            data.setVar('__inherit_cache', __inherit_cache, d)
+
+    if include != 0:
+        oldfile = data.getVar('FILE', d)
+    else:
+        oldfile = None
+
+    fn = obtain(fn, d)
+    bbpath = (data.getVar('BBPATH', d, 1) or '').split(':')
+    if not os.path.isabs(fn):
+        f = None
+        for p in bbpath:
+            j = os.path.join(p, fn)
+            if os.access(j, os.R_OK):
+                abs_fn = j
+                f = open(j, 'r')
+                break
+        if f is None:
+            raise IOError("file %s not found" % fn)
+    else:
+        f = open(fn,'r')
+        abs_fn = fn
+
+    if ext != ".bbclass":
+        dname = os.path.dirname(abs_fn)
+        if dname not in bbpath:
+            bbpath.insert(0, dname)
+            data.setVar('BBPATH', ":".join(bbpath), d)
+
+    if include:
+        bb.parse.mark_dependency(d, abs_fn)
+
+    if ext != ".bbclass":
+        data.setVar('FILE', fn, d)
+
+    lineno = 0
+    while 1:
+        lineno = lineno + 1
+        s = f.readline()
+        if not s: break
+        s = s.rstrip()
+        feeder(lineno, s, fn, base_name, d)
+    if __inpython__:
+        # add a blank line to close out any python definition
+        feeder(IN_PYTHON_EOF, "", fn, base_name, d)
+    if ext == ".bbclass":
+        classes.remove(__classname__)
+    else:
+        if include == 0:
+            data.expandKeys(d)
+            data.update_data(d)
+            anonqueue = data.getVar("__anonqueue", d, 1) or []
+            body = [x['content'] for x in anonqueue]
+            flag = { 'python' : 1, 'func' : 1 }
+            data.setVar("__anonfunc", "\n".join(body), d)
+            data.setVarFlags("__anonfunc", flag, d)
+            from bb import build
+            try:
+                t = data.getVar('T', d)
+                data.setVar('T', '${TMPDIR}/anonfunc/', d)
+                build.exec_func("__anonfunc", d)
+                data.delVar('T', d)
+                if t:
+                    data.setVar('T', t, d)
+            except Exception, e:
+                bb.msg.debug(1, bb.msg.domain.Parsing, "Exception when executing anonymous function: %s" % e)
+                raise
+            data.delVar("__anonqueue", d)
+            data.delVar("__anonfunc", d)
+            set_additional_vars(fn, d, include)
+            data.update_data(d)
+
+            all_handlers = {} 
+            for var in data.getVar('__BBHANDLERS', d) or []:
+                # try to add the handler
+                handler = data.getVar(var,d)
+                bb.event.register(var, handler)
+
+            tasklist = data.getVar('__BBTASKS', d) or []
+            bb.build.add_tasks(tasklist, d)
+
+        bbpath.pop(0)
+    if oldfile:
+        bb.data.setVar("FILE", oldfile, d)
+
+    # we have parsed the bb class now
+    if ext == ".bbclass" or ext == ".inc":
+        __parsed_methods__[base_name] = 1
+
+    return d
+
+def feeder(lineno, s, fn, root, d):
+    global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __def_regexp__, __python_func_regexp__, __inpython__,__infunc__, __body__, classes, bb, __residue__
+    if __infunc__:
+        if s == '}':
+            __body__.append('')
+            data.setVar(__infunc__, '\n'.join(__body__), d)
+            data.setVarFlag(__infunc__, "func", 1, d)
+            if __infunc__ == "__anonymous":
+                anonqueue = bb.data.getVar("__anonqueue", d) or []
+                anonitem = {}
+                anonitem["content"] = bb.data.getVar("__anonymous", d)
+                anonitem["flags"] = bb.data.getVarFlags("__anonymous", d)
+                anonqueue.append(anonitem)
+                bb.data.setVar("__anonqueue", anonqueue, d)
+                bb.data.delVarFlags("__anonymous", d)
+                bb.data.delVar("__anonymous", d)
+            __infunc__ = ""
+            __body__ = []
+        else:
+            __body__.append(s)
+        return
+
+    if __inpython__:
+        m = __python_func_regexp__.match(s)
+        if m and lineno != IN_PYTHON_EOF:
+            __body__.append(s)
+            return
+        else:
+            # Note we will add root to parsedmethods after having parse
+            # 'this' file. This means we will not parse methods from
+            # bb classes twice
+            if not root  in __parsed_methods__:
+                text = '\n'.join(__body__)
+                methodpool.insert_method( root, text, fn )
+                funcs = data.getVar('__functions__', d) or {}
+                if not funcs.has_key( root ):
+                    funcs[root] = text 
+                else:
+                    funcs[root] = "%s\n%s" % (funcs[root], text)
+
+                data.setVar('__functions__', funcs, d)
+            __body__ = []
+            __inpython__ = False
+
+            if lineno == IN_PYTHON_EOF:
+                return
+
+#           fall through
+
+    if s == '' or s[0] == '#': return          # skip comments and empty lines
+
+    if s[-1] == '\\':
+        __residue__.append(s[:-1])
+        return
+
+    s = "".join(__residue__) + s
+    __residue__ = []
+
+    m = __func_start_regexp__.match(s)
+    if m:
+        __infunc__ = m.group("func") or "__anonymous"
+        key = __infunc__
+        if data.getVar(key, d):
+#           clean up old version of this piece of metadata, as its
+#           flags could cause problems
+            data.setVarFlag(key, 'python', None, d)
+            data.setVarFlag(key, 'fakeroot', None, d)
+        if m.group("py") is not None:
+            data.setVarFlag(key, "python", "1", d)
+        else:
+            data.delVarFlag(key, "python", d)
+        if m.group("fr") is not None:
+            data.setVarFlag(key, "fakeroot", "1", d)
+        else:
+            data.delVarFlag(key, "fakeroot", d)
+        return
+
+    m = __def_regexp__.match(s)
+    if m:
+        __body__.append(s)
+        __inpython__ = True
+        return
+
+    m = __export_func_regexp__.match(s)
+    if m:
+        fns = m.group(1)
+        n = __word__.findall(fns)
+        for f in n:
+            allvars = []
+            allvars.append(f)
+            allvars.append(classes[-1] + "_" + f)
+
+            vars = [[ allvars[0], allvars[1] ]]
+            if len(classes) > 1 and classes[-2] is not None:
+                allvars.append(classes[-2] + "_" + f)
+                vars = []
+                vars.append([allvars[2], allvars[1]])
+                vars.append([allvars[0], allvars[2]])
+
+            for (var, calledvar) in vars:
+                if data.getVar(var, d) and not data.getVarFlag(var, 'export_func', d):
+                    continue
+
+                if data.getVar(var, d):
+                    data.setVarFlag(var, 'python', None, d)
+                    data.setVarFlag(var, 'func', None, d)
+
+                for flag in [ "func", "python" ]:
+                    if data.getVarFlag(calledvar, flag, d):
+                        data.setVarFlag(var, flag, data.getVarFlag(calledvar, flag, d), d)
+                for flag in [ "dirs" ]:
+                    if data.getVarFlag(var, flag, d):
+                        data.setVarFlag(calledvar, flag, data.getVarFlag(var, flag, d), d)
+
+                if data.getVarFlag(calledvar, "python", d):
+                    data.setVar(var, "\tbb.build.exec_func('" + calledvar + "', d)\n", d)
+                else:
+                    data.setVar(var, "\t" + calledvar + "\n", d)
+                data.setVarFlag(var, 'export_func', '1', d)
+
+        return
+
+    m = __addtask_regexp__.match(s)
+    if m:
+        func = m.group("func")
+        before = m.group("before")
+        after = m.group("after")
+        if func is None:
+            return
+        var = "do_" + func
+
+        data.setVarFlag(var, "task", 1, d)
+
+        bbtasks = data.getVar('__BBTASKS', d) or []
+        if not var in bbtasks:
+            bbtasks.append(var)
+        data.setVar('__BBTASKS', bbtasks, d)
+
+        existing = data.getVarFlag(var, "deps", d) or []
+        if after is not None:
+            # set up deps for function
+            for entry in after.split():
+                if entry not in existing:
+                    existing.append(entry)
+        data.setVarFlag(var, "deps", existing, d)
+        if before is not None:
+            # set up things that depend on this func
+            for entry in before.split():
+                existing = data.getVarFlag(entry, "deps", d) or []
+                if var not in existing:
+                    data.setVarFlag(entry, "deps", [var] + existing, d)
+        return
+
+    m = __addhandler_regexp__.match(s)
+    if m:
+        fns = m.group(1)
+        hs = __word__.findall(fns)
+        bbhands = data.getVar('__BBHANDLERS', d) or []
+        for h in hs:
+            bbhands.append(h)
+            data.setVarFlag(h, "handler", 1, d)
+        data.setVar('__BBHANDLERS', bbhands, d)
+        return
+
+    m = __inherit_regexp__.match(s)
+    if m:
+
+        files = m.group(1)
+        n = __word__.findall(files)
+        inherit(n, d)
+        return
+
+    from bb.parse import ConfHandler
+    return ConfHandler.feeder(lineno, s, fn, d)
+
+__pkgsplit_cache__={}
+def vars_from_file(mypkg, d):
+    if not mypkg:
+        return (None, None, None)
+    if mypkg in __pkgsplit_cache__:
+        return __pkgsplit_cache__[mypkg]
+
+    myfile = os.path.splitext(os.path.basename(mypkg))
+    parts = myfile[0].split('_')
+    __pkgsplit_cache__[mypkg] = parts
+    if len(parts) > 3:
+        raise ParseError("Unable to generate default variables from the filename: %s (too many underscores)" % mypkg)
+    exp = 3 - len(parts)
+    tmplist = []
+    while exp != 0:
+        exp -= 1
+        tmplist.append(None)
+    parts.extend(tmplist)
+    return parts
+
+def set_additional_vars(file, d, include):
+    """Deduce rest of variables, e.g. ${A} out of ${SRC_URI}"""
+
+    return
+    # Nothing seems to use this variable
+    #bb.msg.debug(2, bb.msg.domain.Parsing, "BB %s: set_additional_vars" % file)
+
+    #src_uri = data.getVar('SRC_URI', d, 1)
+    #if not src_uri:
+    #    return
+
+    #a = (data.getVar('A', d, 1) or '').split()
+
+    #from bb import fetch
+    #try:
+    #    ud = fetch.init(src_uri.split(), d)
+    #    a += fetch.localpaths(d, ud)
+    #except fetch.NoMethodError:
+    #    pass
+    #except bb.MalformedUrl,e:
+    #    raise ParseError("Unable to generate local paths for SRC_URI due to malformed uri: %s" % e)
+    #del fetch
+
+    #data.setVar('A', " ".join(a), d)
+
+
+# Add us to the handlers list
+from bb.parse import handlers
+handlers.append({'supports': supports, 'handle': handle, 'init': init})
+del handlers
diff --git a/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py b/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py
new file mode 100644
index 0000000000..e6488bbe11
--- /dev/null
+++ b/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py
@@ -0,0 +1,228 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+   class for handling configuration data files
+
+   Reads a .conf file and obtains its metadata
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import re, bb.data, os, sys
+from bb.parse import ParseError
+
+#__config_regexp__  = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}]+)\s*(?P<colon>:)?(?P<ques>\?)?=\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$")
+__config_regexp__  = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}/]+)(\[(?P<flag>[a-zA-Z0-9\-_+.]+)\])?\s*((?P<colon>:=)|(?P<ques>\?=)|(?P<append>\+=)|(?P<prepend>=\+)|(?P<predot>=\.)|(?P<postdot>\.=)|=)\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$")
+__include_regexp__ = re.compile( r"include\s+(.+)" )
+__require_regexp__ = re.compile( r"require\s+(.+)" )
+__export_regexp__ = re.compile( r"export\s+(.+)" )
+
+def init(data):
+    if not bb.data.getVar('TOPDIR', data):
+        bb.data.setVar('TOPDIR', os.getcwd(), data)
+    if not bb.data.getVar('BBPATH', data):
+        bb.data.setVar('BBPATH', os.path.join(sys.prefix, 'share', 'bitbake'), data)
+
+def supports(fn, d):
+    return localpath(fn, d)[-5:] == ".conf"
+
+def localpath(fn, d):
+    if os.path.exists(fn):
+        return fn
+
+    if "://" not in fn:
+        return fn
+
+    localfn = None
+    try:
+        localfn = bb.fetch.localpath(fn, d, False)
+    except bb.MalformedUrl:
+        pass
+
+    if not localfn:
+        return fn
+    return localfn
+
+def obtain(fn, data):
+    import sys, bb
+    fn = bb.data.expand(fn, data)
+    localfn = bb.data.expand(localpath(fn, data), data)
+
+    if localfn != fn:
+        dldir = bb.data.getVar('DL_DIR', data, 1)
+        if not dldir:
+            bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: DL_DIR not defined")
+            return localfn
+        bb.mkdirhier(dldir)
+        try:
+            bb.fetch.init([fn], data)
+        except bb.fetch.NoMethodError:
+            (type, value, traceback) = sys.exc_info()
+            bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: no method: %s" % value)
+            return localfn
+
+        try:
+            bb.fetch.go(data)
+        except bb.fetch.MissingParameterError:
+            (type, value, traceback) = sys.exc_info()
+            bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: missing parameters: %s" % value)
+            return localfn
+        except bb.fetch.FetchError:
+            (type, value, traceback) = sys.exc_info()
+            bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: failed: %s" % value)
+            return localfn
+    return localfn
+
+
+def include(oldfn, fn, data, error_out):
+    """
+
+    error_out If True a ParseError will be reaised if the to be included
+    """
+    if oldfn == fn: # prevent infinate recursion
+        return None
+
+    import bb
+    fn = bb.data.expand(fn, data)
+    oldfn = bb.data.expand(oldfn, data)
+
+    from bb.parse import handle
+    try:
+        ret = handle(fn, data, True)
+    except IOError:
+        if error_out:
+            raise ParseError("Could not %(error_out)s file %(fn)s" % vars() )
+        bb.msg.debug(2, bb.msg.domain.Parsing, "CONF file '%s' not found" % fn)
+
+def handle(fn, data, include = 0):
+    if include:
+        inc_string = "including"
+    else:
+        inc_string = "reading"
+    init(data)
+
+    if include == 0:
+        bb.data.inheritFromOS(data)
+        oldfile = None
+    else:
+        oldfile = bb.data.getVar('FILE', data)
+
+    fn = obtain(fn, data)
+    if not os.path.isabs(fn):
+        f = None
+        bbpath = bb.data.getVar("BBPATH", data, 1) or []
+        for p in bbpath.split(":"):
+            currname = os.path.join(p, fn)
+            if os.access(currname, os.R_OK):
+                f = open(currname, 'r')
+                abs_fn = currname
+                bb.msg.debug(2, bb.msg.domain.Parsing, "CONF %s %s" % (inc_string, currname))
+                break
+        if f is None:
+            raise IOError("file '%s' not found" % fn)
+    else:
+        f = open(fn,'r')
+        bb.msg.debug(1, bb.msg.domain.Parsing, "CONF %s %s" % (inc_string,fn))
+        abs_fn = fn
+
+    if include:
+        bb.parse.mark_dependency(data, abs_fn)
+
+    lineno = 0
+    bb.data.setVar('FILE', fn, data)
+    while 1:
+        lineno = lineno + 1
+        s = f.readline()
+        if not s: break
+        w = s.strip()
+        if not w: continue          # skip empty lines
+        s = s.rstrip()
+        if s[0] == '#': continue    # skip comments
+        while s[-1] == '\\':
+            s2 = f.readline()[:-1].strip()
+            lineno = lineno + 1
+            s = s[:-1] + s2
+        feeder(lineno, s, fn, data)
+
+    if oldfile:
+        bb.data.setVar('FILE', oldfile, data)
+    return data
+
+def feeder(lineno, s, fn, data):
+    def getFunc(groupd, key, data):
+        if 'flag' in groupd and groupd['flag'] != None:
+            return bb.data.getVarFlag(key, groupd['flag'], data)
+        else:
+            return bb.data.getVar(key, data)
+
+    m = __config_regexp__.match(s)
+    if m:
+        groupd = m.groupdict()
+        key = groupd["var"]
+        if "exp" in groupd and groupd["exp"] != None:
+            bb.data.setVarFlag(key, "export", 1, data)
+        if "ques" in groupd and groupd["ques"] != None:
+            val = getFunc(groupd, key, data)
+            if val == None:
+                val = groupd["value"]
+        elif "colon" in groupd and groupd["colon"] != None:
+            e = data.createCopy()
+            bb.data.update_data(e)
+            val = bb.data.expand(groupd["value"], e)
+        elif "append" in groupd and groupd["append"] != None:
+            val = "%s %s" % ((getFunc(groupd, key, data) or ""), groupd["value"])
+        elif "prepend" in groupd and groupd["prepend"] != None:
+            val = "%s %s" % (groupd["value"], (getFunc(groupd, key, data) or ""))
+        elif "postdot" in groupd and groupd["postdot"] != None:
+            val = "%s%s" % ((getFunc(groupd, key, data) or ""), groupd["value"])
+        elif "predot" in groupd and groupd["predot"] != None:
+            val = "%s%s" % (groupd["value"], (getFunc(groupd, key, data) or ""))
+        else:
+            val = groupd["value"]
+        if 'flag' in groupd and groupd['flag'] != None:
+            bb.msg.debug(3, bb.msg.domain.Parsing, "setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val))
+            bb.data.setVarFlag(key, groupd['flag'], val, data)
+        else:
+            bb.data.setVar(key, val, data)
+        return
+
+    m = __include_regexp__.match(s)
+    if m:
+        s = bb.data.expand(m.group(1), data)
+        bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (fn, lineno, s))
+        include(fn, s, data, False)
+        return
+
+    m = __require_regexp__.match(s)
+    if m:
+        s = bb.data.expand(m.group(1), data)
+        include(fn, s, data, "include required")
+        return
+
+    m = __export_regexp__.match(s)
+    if m:
+        bb.data.setVarFlag(m.group(1), "export", 1, data)
+        return
+
+    raise ParseError("%s:%d: unparsed line: '%s'" % (fn, lineno, s));
+
+# Add us to the handlers list
+from bb.parse import handlers
+handlers.append({'supports': supports, 'handle': handle, 'init': init})
+del handlers
diff --git a/bitbake-dev/lib/bb/parse/parse_py/__init__.py b/bitbake-dev/lib/bb/parse/parse_py/__init__.py
new file mode 100644
index 0000000000..9e0e00adda
--- /dev/null
+++ b/bitbake-dev/lib/bb/parse/parse_py/__init__.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake Parsers
+
+File parsers for the BitBake build tools.
+
+"""
+
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+__version__ = '1.0'
+
+__all__ = [ 'ConfHandler', 'BBHandler']
+
+import ConfHandler
+import BBHandler
diff --git a/bitbake-dev/lib/bb/persist_data.py b/bitbake-dev/lib/bb/persist_data.py
new file mode 100644
index 0000000000..79e7448bee
--- /dev/null
+++ b/bitbake-dev/lib/bb/persist_data.py
@@ -0,0 +1,110 @@
+# BitBake Persistent Data Store
+#
+# Copyright (C) 2007        Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import bb, os
+
+try:
+    import sqlite3
+except ImportError:
+    try:
+        from pysqlite2 import dbapi2 as sqlite3
+    except ImportError:
+        bb.msg.fatal(bb.msg.domain.PersistData, "Importing sqlite3 and pysqlite2 failed, please install one of them. Python 2.5 or a 'python-pysqlite2' like package is likely to be what you need.")
+
+sqlversion = sqlite3.sqlite_version_info
+if sqlversion[0] < 3 or (sqlversion[0] == 3 and sqlversion[1] < 3):
+    bb.msg.fatal(bb.msg.domain.PersistData, "sqlite3 version 3.3.0 or later is required.")
+
+class PersistData:
+    """
+    BitBake Persistent Data Store
+
+    Used to store data in a central location such that other threads/tasks can 
+    access them at some future date.
+
+    The "domain" is used as a key to isolate each data pool and in this 
+    implementation corresponds to an SQL table. The SQL table consists of a 
+    simple key and value pair.
+
+    Why sqlite? It handles all the locking issues for us.
+    """
+    def __init__(self, d):
+        self.cachedir = bb.data.getVar("PERSISTENT_DIR", d, True) or bb.data.getVar("CACHE", d, True)
+        if self.cachedir in [None, '']:
+            bb.msg.fatal(bb.msg.domain.PersistData, "Please set the 'PERSISTENT_DIR' or 'CACHE' variable.")
+        try:
+            os.stat(self.cachedir)
+        except OSError:
+            bb.mkdirhier(self.cachedir)
+
+        self.cachefile = os.path.join(self.cachedir,"bb_persist_data.sqlite3")
+        bb.msg.debug(1, bb.msg.domain.PersistData, "Using '%s' as the persistent data cache" % self.cachefile)
+
+        self.connection = sqlite3.connect(self.cachefile, timeout=5, isolation_level=None)
+
+    def addDomain(self, domain):
+        """
+        Should be called before any domain is used
+        Creates it if it doesn't exist.
+        """
+        self.connection.execute("CREATE TABLE IF NOT EXISTS %s(key TEXT, value TEXT);" % domain)
+
+    def delDomain(self, domain):
+        """
+        Removes a domain and all the data it contains
+        """
+        self.connection.execute("DROP TABLE IF EXISTS %s;" % domain)
+
+    def getValue(self, domain, key):
+        """
+        Return the value of a key for a domain
+        """
+        data = self.connection.execute("SELECT * from %s where key=?;" % domain, [key])
+        for row in data:
+            return row[1]
+
+    def setValue(self, domain, key, value):
+        """
+        Sets the value of a key for a domain
+        """
+        data = self.connection.execute("SELECT * from %s where key=?;" % domain, [key])
+        rows = 0
+        for row in data:
+            rows = rows + 1
+        if rows:
+            self._execute("UPDATE %s SET value=? WHERE key=?;" % domain, [value, key])
+        else:
+            self._execute("INSERT into %s(key, value) values (?, ?);" % domain, [key, value])
+
+    def delValue(self, domain, key):
+        """
+        Deletes a key/value pair
+        """
+        self._execute("DELETE from %s where key=?;" % domain, [key])
+
+    def _execute(self, *query):
+        while True:     
+            try:
+                self.connection.execute(*query)
+                return
+            except sqlite3.OperationalError, e:
+                if 'database is locked' in str(e):
+                    continue
+                raise
+        
+        
+
diff --git a/bitbake-dev/lib/bb/providers.py b/bitbake-dev/lib/bb/providers.py
new file mode 100644
index 0000000000..0ad5876ef0
--- /dev/null
+++ b/bitbake-dev/lib/bb/providers.py
@@ -0,0 +1,303 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2003, 2004  Chris Larson
+# Copyright (C) 2003, 2004  Phil Blundell
+# Copyright (C) 2003 - 2005 Michael 'Mickey' Lauer
+# Copyright (C) 2005        Holger Hans Peter Freyther
+# Copyright (C) 2005        ROAD GmbH
+# Copyright (C) 2006        Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, re
+from bb import data, utils
+import bb
+
+class NoProvider(Exception):
+    """Exception raised when no provider of a build dependency can be found"""
+
+class NoRProvider(Exception):
+    """Exception raised when no provider of a runtime dependency can be found"""
+
+
+def sortPriorities(pn, dataCache, pkg_pn = None):
+    """
+    Reorder pkg_pn by file priority and default preference
+    """
+
+    if not pkg_pn:
+        pkg_pn = dataCache.pkg_pn
+
+    files = pkg_pn[pn]
+    priorities = {}
+    for f in files:
+        priority = dataCache.bbfile_priority[f]
+        preference = dataCache.pkg_dp[f]
+        if priority not in priorities:
+            priorities[priority] = {}
+        if preference not in priorities[priority]:
+            priorities[priority][preference] = []
+        priorities[priority][preference].append(f)
+    pri_list = priorities.keys()
+    pri_list.sort(lambda a, b: a - b)
+    tmp_pn = []
+    for pri in pri_list:
+        pref_list = priorities[pri].keys()
+        pref_list.sort(lambda a, b: b - a)
+        tmp_pref = []
+        for pref in pref_list:
+            tmp_pref.extend(priorities[pri][pref])
+        tmp_pn = [tmp_pref] + tmp_pn
+
+    return tmp_pn
+
+
+def findPreferredProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
+    """
+    Find the first provider in pkg_pn with a PREFERRED_VERSION set.
+    """
+
+    preferred_file = None
+    preferred_ver = None
+
+    localdata = data.createCopy(cfgData)
+    bb.data.setVar('OVERRIDES', "pn-%s:%s:%s" % (pn, pn, data.getVar('OVERRIDES', localdata)), localdata)
+    bb.data.update_data(localdata)
+
+    preferred_v = bb.data.getVar('PREFERRED_VERSION_%s' % pn, localdata, True)
+    if preferred_v:
+        m = re.match('(\d+:)*(.*)(_.*)*', preferred_v)
+        if m:
+            if m.group(1):
+                preferred_e = int(m.group(1)[:-1])
+            else:
+                preferred_e = None
+            preferred_v = m.group(2)
+            if m.group(3):
+                preferred_r = m.group(3)[1:]
+            else:
+                preferred_r = None
+        else:
+            preferred_e = None
+            preferred_r = None
+
+        for file_set in pkg_pn:
+            for f in file_set:
+                pe,pv,pr = dataCache.pkg_pepvpr[f]
+                if preferred_v == pv and (preferred_r == pr or preferred_r == None) and (preferred_e == pe or preferred_e == None):
+                    preferred_file = f
+                    preferred_ver = (pe, pv, pr)
+                    break
+            if preferred_file:
+                break;
+        if preferred_r:
+            pv_str = '%s-%s' % (preferred_v, preferred_r)
+        else:
+            pv_str = preferred_v
+        if not (preferred_e is None):
+            pv_str = '%s:%s' % (preferred_e, pv_str)
+        itemstr = ""
+        if item:
+            itemstr = " (for item %s)" % item
+        if preferred_file is None:
+            bb.msg.note(1, bb.msg.domain.Provider, "preferred version %s of %s not available%s" % (pv_str, pn, itemstr))
+        else:
+            bb.msg.debug(1, bb.msg.domain.Provider, "selecting %s as PREFERRED_VERSION %s of package %s%s" % (preferred_file, pv_str, pn, itemstr))
+
+    return (preferred_ver, preferred_file)
+
+
+def findLatestProvider(pn, cfgData, dataCache, file_set):
+    """
+    Return the highest version of the providers in file_set.
+    Take default preferences into account.
+    """
+    latest = None
+    latest_p = 0
+    latest_f = None
+    for file_name in file_set:
+        pe,pv,pr = dataCache.pkg_pepvpr[file_name]
+        dp = dataCache.pkg_dp[file_name]
+
+        if (latest is None) or ((latest_p == dp) and (utils.vercmp(latest, (pe, pv, pr)) < 0)) or (dp > latest_p):
+            latest = (pe, pv, pr)
+            latest_f = file_name
+            latest_p = dp
+
+    return (latest, latest_f)
+
+
+def findBestProvider(pn, cfgData, dataCache, pkg_pn = None, item = None):
+    """
+    If there is a PREFERRED_VERSION, find the highest-priority bbfile
+    providing that version.  If not, find the latest version provided by
+    an bbfile in the highest-priority set.
+    """
+
+    sortpkg_pn = sortPriorities(pn, dataCache, pkg_pn)
+    # Find the highest priority provider with a PREFERRED_VERSION set
+    (preferred_ver, preferred_file) = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn, item)
+    # Find the latest version of the highest priority provider
+    (latest, latest_f) = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[0])
+
+    if preferred_file is None:
+        preferred_file = latest_f
+        preferred_ver = latest
+
+    return (latest, latest_f, preferred_ver, preferred_file)
+
+
+def _filterProviders(providers, item, cfgData, dataCache):
+    """
+    Take a list of providers and filter/reorder according to the 
+    environment variables and previous build results
+    """
+    eligible = []
+    preferred_versions = {}
+    sortpkg_pn = {}
+
+    # The order of providers depends on the order of the files on the disk 
+    # up to here. Sort pkg_pn to make dependency issues reproducible rather
+    # than effectively random.
+    providers.sort()
+
+    # Collate providers by PN
+    pkg_pn = {}
+    for p in providers:
+        pn = dataCache.pkg_fn[p]
+        if pn not in pkg_pn:
+            pkg_pn[pn] = []
+        pkg_pn[pn].append(p)
+
+    bb.msg.debug(1, bb.msg.domain.Provider, "providers for %s are: %s" % (item, pkg_pn.keys()))
+
+    # First add PREFERRED_VERSIONS
+    for pn in pkg_pn.keys():
+        sortpkg_pn[pn] = sortPriorities(pn, dataCache, pkg_pn)
+        preferred_versions[pn] = findPreferredProvider(pn, cfgData, dataCache, sortpkg_pn[pn], item)
+        if preferred_versions[pn][1]:
+            eligible.append(preferred_versions[pn][1])
+
+    # Now add latest verisons
+    for pn in pkg_pn.keys():
+        if pn in preferred_versions and preferred_versions[pn][1]:
+            continue
+        preferred_versions[pn] = findLatestProvider(pn, cfgData, dataCache, sortpkg_pn[pn][0])
+        eligible.append(preferred_versions[pn][1])
+
+    if len(eligible) == 0:
+        bb.msg.error(bb.msg.domain.Provider, "no eligible providers for %s" % item)
+        return 0
+
+    # If pn == item, give it a slight default preference
+    # This means PREFERRED_PROVIDER_foobar defaults to foobar if available
+    for p in providers:
+        pn = dataCache.pkg_fn[p]
+        if pn != item:
+            continue
+        (newvers, fn) = preferred_versions[pn]
+        if not fn in eligible:
+            continue
+        eligible.remove(fn)
+        eligible = [fn] + eligible
+
+    return eligible
+
+
+def filterProviders(providers, item, cfgData, dataCache):
+    """
+    Take a list of providers and filter/reorder according to the 
+    environment variables and previous build results
+    Takes a "normal" target item
+    """
+
+    eligible = _filterProviders(providers, item, cfgData, dataCache)
+
+    prefervar = bb.data.getVar('PREFERRED_PROVIDER_%s' % item, cfgData, 1)
+    if prefervar:
+        dataCache.preferred[item] = prefervar
+
+    foundUnique = False
+    if item in dataCache.preferred:
+        for p in eligible:
+            pn = dataCache.pkg_fn[p]
+            if dataCache.preferred[item] == pn:
+                bb.msg.note(2, bb.msg.domain.Provider, "selecting %s to satisfy %s due to PREFERRED_PROVIDERS" % (pn, item))
+                eligible.remove(p)
+                eligible = [p] + eligible
+                foundUnique = True
+                break
+
+    bb.msg.debug(1, bb.msg.domain.Provider, "sorted providers for %s are: %s" % (item, eligible))
+
+    return eligible, foundUnique
+
+def filterProvidersRunTime(providers, item, cfgData, dataCache):
+    """
+    Take a list of providers and filter/reorder according to the 
+    environment variables and previous build results
+    Takes a "runtime" target item
+    """
+
+    eligible = _filterProviders(providers, item, cfgData, dataCache)
+
+    # Should use dataCache.preferred here?
+    preferred = []
+    preferred_vars = []
+    for p in eligible:
+        pn = dataCache.pkg_fn[p]
+        provides = dataCache.pn_provides[pn]
+        for provide in provides:
+            prefervar = bb.data.getVar('PREFERRED_PROVIDER_%s' % provide, cfgData, 1)
+            if prefervar == pn:
+                var = "PREFERRED_PROVIDERS_%s = %s" % (provide, prefervar)
+                bb.msg.note(2, bb.msg.domain.Provider, "selecting %s to satisfy runtime %s due to %s" % (pn, item, var))
+                preferred_vars.append(var)
+                eligible.remove(p)
+                eligible = [p] + eligible
+                preferred.append(p)
+                break
+
+    numberPreferred = len(preferred)
+
+    if numberPreferred > 1:
+        bb.msg.error(bb.msg.domain.Provider, "Conflicting PREFERRED_PROVIDERS entries were found which resulted in an attempt to select multiple providers (%s) for runtime dependecy %s\nThe entries resulting in this conflict were: %s" % (preferred, item, preferred_vars))
+
+    bb.msg.debug(1, bb.msg.domain.Provider, "sorted providers for %s are: %s" % (item, eligible))
+
+    return eligible, numberPreferred
+
+def getRuntimeProviders(dataCache, rdepend):
+    """
+    Return any providers of runtime dependency
+    """
+    rproviders = []
+
+    if rdepend in dataCache.rproviders:
+       rproviders += dataCache.rproviders[rdepend]
+
+    if rdepend in dataCache.packages:
+        rproviders += dataCache.packages[rdepend]
+
+    if rproviders:
+        return rproviders
+
+    # Only search dynamic packages if we can't find anything in other variables
+    for pattern in dataCache.packages_dynamic:
+        regexp = re.compile(pattern)
+        if regexp.match(rdepend):
+            rproviders += dataCache.packages_dynamic[pattern]
+
+    return rproviders
diff --git a/bitbake-dev/lib/bb/runqueue.py b/bitbake-dev/lib/bb/runqueue.py
new file mode 100644
index 0000000000..4130b50641
--- /dev/null
+++ b/bitbake-dev/lib/bb/runqueue.py
@@ -0,0 +1,1157 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'RunQueue' implementation
+
+Handles preparation and execution of a queue of tasks
+"""
+
+# Copyright (C) 2006-2007  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+from bb import msg, data, event, mkdirhier, utils
+from sets import Set 
+import bb, os, sys
+import signal
+import stat
+
+class TaskFailure(Exception):
+    """Exception raised when a task in a runqueue fails"""
+    def __init__(self, x): 
+        self.args = x
+
+
+class RunQueueStats:
+    """
+    Holds statistics on the tasks handled by the associated runQueue
+    """
+    def __init__(self, total):
+        self.completed = 0
+        self.skipped = 0
+        self.failed = 0
+        self.active = 0
+        self.total = total
+
+    def taskFailed(self):
+        self.active = self.active - 1
+        self.failed = self.failed + 1
+
+    def taskCompleted(self, number = 1):
+        self.active = self.active - number
+        self.completed = self.completed + number
+
+    def taskSkipped(self, number = 1):
+        self.active = self.active + number
+        self.skipped = self.skipped + number
+
+    def taskActive(self):
+        self.active = self.active + 1
+
+# These values indicate the next step due to be run in the 
+# runQueue state machine
+runQueuePrepare = 2
+runQueueRunInit = 3
+runQueueRunning = 4
+runQueueFailed = 6
+runQueueCleanUp = 7
+runQueueComplete = 8
+runQueueChildProcess = 9
+
+class RunQueueScheduler:
+    """
+    Control the order tasks are scheduled in.
+    """
+    def __init__(self, runqueue):
+        """
+        The default scheduler just returns the first buildable task (the 
+        priority map is sorted by task numer)
+        """
+        self.rq = runqueue
+        numTasks = len(self.rq.runq_fnid)
+
+        self.prio_map = []
+        self.prio_map.extend(range(numTasks))
+
+    def next(self):
+        """
+        Return the id of the first task we find that is buildable
+        """
+        for task1 in range(len(self.rq.runq_fnid)):
+            task = self.prio_map[task1]
+            if self.rq.runq_running[task] == 1:
+                continue
+            if self.rq.runq_buildable[task] == 1:
+                return task
+
+class RunQueueSchedulerSpeed(RunQueueScheduler):
+    """
+    A scheduler optimised for speed. The priority map is sorted by task weight,
+    heavier weighted tasks (tasks needed by the most other tasks) are run first.
+    """
+    def __init__(self, runqueue):
+        """
+        The priority map is sorted by task weight.
+        """
+        from copy import deepcopy
+
+        self.rq = runqueue
+
+        sortweight = deepcopy(self.rq.runq_weight)
+        sortweight.sort()
+        copyweight = deepcopy(self.rq.runq_weight)
+        self.prio_map = []
+
+        for weight in sortweight:
+            idx = copyweight.index(weight)
+            self.prio_map.append(idx)
+            copyweight[idx] = -1
+
+        self.prio_map.reverse()
+
+class RunQueueSchedulerCompletion(RunQueueSchedulerSpeed):
+    """
+    A scheduler optimised to complete .bb files are quickly as possible. The 
+    priority map is sorted by task weight, but then reordered so once a given 
+    .bb file starts to build, its completed as quickly as possible. This works
+    well where disk space is at a premium and classes like OE's rm_work are in 
+    force.
+    """
+    def __init__(self, runqueue):
+        RunQueueSchedulerSpeed.__init__(self, runqueue)
+        from copy import deepcopy
+
+        #FIXME - whilst this groups all fnids together it does not reorder the
+        #fnid groups optimally.
+ 
+        basemap = deepcopy(self.prio_map)
+        self.prio_map = []
+        while (len(basemap) > 0):
+            entry = basemap.pop(0)
+            self.prio_map.append(entry)
+            fnid = self.rq.runq_fnid[entry]
+            todel = []
+            for entry in basemap:
+                entry_fnid = self.rq.runq_fnid[entry]
+                if entry_fnid == fnid:
+                    todel.append(basemap.index(entry))
+                    self.prio_map.append(entry)
+            todel.reverse()
+            for idx in todel:
+                del basemap[idx]
+
+class RunQueue:
+    """
+    BitBake Run Queue implementation
+    """
+    def __init__(self, cooker, cfgData, dataCache, taskData, targets):
+        self.reset_runqueue()
+        self.cooker = cooker
+        self.dataCache = dataCache
+        self.taskData = taskData
+        self.cfgData = cfgData
+        self.targets = targets
+
+        self.number_tasks = int(bb.data.getVar("BB_NUMBER_THREADS", cfgData, 1) or 1)
+        self.multi_provider_whitelist = (bb.data.getVar("MULTI_PROVIDER_WHITELIST", cfgData, 1) or "").split()
+        self.scheduler = bb.data.getVar("BB_SCHEDULER", cfgData, 1) or "speed"
+        self.stamppolicy = bb.data.getVar("BB_STAMP_POLICY", cfgData, 1) or "perfile"
+        self.stampwhitelist = bb.data.getVar("BB_STAMP_WHITELIST", cfgData, 1) or ""
+
+    def reset_runqueue(self):
+        self.runq_fnid = []
+        self.runq_task = []
+        self.runq_depends = []
+        self.runq_revdeps = []
+
+        self.state = runQueuePrepare
+
+    def get_user_idstring(self, task):
+        fn = self.taskData.fn_index[self.runq_fnid[task]]
+        taskname = self.runq_task[task]
+        return "%s, %s" % (fn, taskname)
+
+    def get_task_id(self, fnid, taskname):
+        for listid in range(len(self.runq_fnid)):
+            if self.runq_fnid[listid] == fnid and self.runq_task[listid] == taskname:
+                return listid
+        return None
+
+    def circular_depchains_handler(self, tasks):
+        """
+        Some tasks aren't buildable, likely due to circular dependency issues.
+        Identify the circular dependencies and print them in a user readable format.
+        """
+        from copy import deepcopy
+
+        valid_chains = []
+        explored_deps = {}
+        msgs = []
+
+        def chain_reorder(chain):
+            """
+            Reorder a dependency chain so the lowest task id is first
+            """
+            lowest = 0
+            new_chain = []
+            for entry in range(len(chain)):
+                if chain[entry] < chain[lowest]:
+                    lowest = entry
+            new_chain.extend(chain[lowest:])
+            new_chain.extend(chain[:lowest])
+            return new_chain
+
+        def chain_compare_equal(chain1, chain2):
+            """
+            Compare two dependency chains and see if they're the same
+            """
+            if len(chain1) != len(chain2):
+                return False
+            for index in range(len(chain1)):
+                if chain1[index] != chain2[index]:
+                    return False
+            return True
+            
+        def chain_array_contains(chain, chain_array):
+            """
+            Return True if chain_array contains chain
+            """
+            for ch in chain_array:
+                if chain_compare_equal(ch, chain):
+                    return True
+            return False
+
+        def find_chains(taskid, prev_chain):
+            prev_chain.append(taskid)
+            total_deps = []
+            total_deps.extend(self.runq_revdeps[taskid])
+            for revdep in self.runq_revdeps[taskid]:
+                if revdep in prev_chain:
+                    idx = prev_chain.index(revdep)
+                    # To prevent duplicates, reorder the chain to start with the lowest taskid
+                    # and search through an array of those we've already printed
+                    chain = prev_chain[idx:]
+                    new_chain = chain_reorder(chain)
+                    if not chain_array_contains(new_chain, valid_chains):
+                        valid_chains.append(new_chain)
+                        msgs.append("Dependency loop #%d found:\n" % len(valid_chains))
+                        for dep in new_chain:
+                            msgs.append("  Task %s (%s) (depends: %s)\n" % (dep, self.get_user_idstring(dep), self.runq_depends[dep]))
+                        msgs.append("\n")
+                    if len(valid_chains) > 10:
+                        msgs.append("Aborted dependency loops search after 10 matches.\n")
+                        return msgs
+                    continue
+                scan = False
+                if revdep not in explored_deps:
+                    scan = True
+                elif revdep in explored_deps[revdep]:
+                    scan = True
+                else:
+                    for dep in prev_chain:
+                        if dep in explored_deps[revdep]:
+                            scan = True
+                if scan:
+                    find_chains(revdep, deepcopy(prev_chain))
+                for dep in explored_deps[revdep]:
+                    if dep not in total_deps:
+                        total_deps.append(dep)
+
+            explored_deps[taskid] = total_deps
+
+        for task in tasks:
+            find_chains(task, [])
+
+        return msgs
+
+    def calculate_task_weights(self, endpoints):
+        """
+        Calculate a number representing the "weight" of each task. Heavier weighted tasks 
+        have more dependencies and hence should be executed sooner for maximum speed.
+
+        This function also sanity checks the task list finding tasks that its not
+        possible to execute due to circular dependencies.
+        """
+
+        numTasks = len(self.runq_fnid)
+        weight = []
+        deps_left = []
+        task_done = []
+
+        for listid in range(numTasks):
+            task_done.append(False)
+            weight.append(0)
+            deps_left.append(len(self.runq_revdeps[listid]))
+
+        for listid in endpoints:
+            weight[listid] = 1
+            task_done[listid] = True
+
+        while 1:
+            next_points = []
+            for listid in endpoints:
+                for revdep in self.runq_depends[listid]:
+                    weight[revdep] = weight[revdep] + weight[listid]
+                    deps_left[revdep] = deps_left[revdep] - 1
+                    if deps_left[revdep] == 0:
+                        next_points.append(revdep)
+                        task_done[revdep] = True
+            endpoints = next_points
+            if len(next_points) == 0:
+                break      
+
+        # Circular dependency sanity check
+        problem_tasks = []
+        for task in range(numTasks):
+            if task_done[task] is False or deps_left[task] != 0:
+                problem_tasks.append(task)
+                bb.msg.debug(2, bb.msg.domain.RunQueue, "Task %s (%s) is not buildable\n" % (task, self.get_user_idstring(task)))
+                bb.msg.debug(2, bb.msg.domain.RunQueue, "(Complete marker was %s and the remaining dependency count was %s)\n\n" % (task_done[task], deps_left[task]))
+
+        if problem_tasks:
+            message = "Unbuildable tasks were found.\n"
+            message = message + "These are usually caused by circular dependencies and any circular dependency chains found will be printed below. Increase the debug level to see a list of unbuildable tasks.\n\n"
+            message = message + "Identifying dependency loops (this may take a short while)...\n"
+            bb.msg.error(bb.msg.domain.RunQueue, message)
+
+            msgs = self.circular_depchains_handler(problem_tasks)
+
+            message = "\n"
+            for msg in msgs:
+                message = message + msg
+            bb.msg.fatal(bb.msg.domain.RunQueue, message)
+
+        return weight
+
+    def prepare_runqueue(self):
+        """
+        Turn a set of taskData into a RunQueue and compute data needed 
+        to optimise the execution order.
+        """
+
+        depends = []
+        runq_build = []
+        recursive_tdepends = {}
+
+        taskData = self.taskData
+
+        if len(taskData.tasks_name) == 0:
+            # Nothing to do
+            return
+
+        bb.msg.note(1, bb.msg.domain.RunQueue, "Preparing runqueue")
+
+        # Step A - Work out a list of tasks to run
+        #
+        # Taskdata gives us a list of possible providers for a every target 
+        # ordered by priority (build_targets, run_targets). It also gives
+        # information on each of those providers.
+        #
+        # To create the actual list of tasks to execute we fix the list of 
+        # providers and then resolve the dependencies into task IDs. This 
+        # process is repeated for each type of dependency (tdepends, deptask, 
+        # rdeptast, recrdeptask, idepends).
+
+        for task in range(len(taskData.tasks_name)):
+            fnid = taskData.tasks_fnid[task]
+            fn = taskData.fn_index[fnid]
+            task_deps = self.dataCache.task_deps[fn]
+
+            if fnid not in taskData.failed_fnids:
+
+                # Resolve task internal dependencies 
+                #
+                # e.g. addtask before X after Y
+                depends = taskData.tasks_tdepends[task]
+
+                # Resolve 'deptask' dependencies 
+                #
+                # e.g. do_sometask[deptask] = "do_someothertask"
+                # (makes sure sometask runs after someothertask of all DEPENDS)
+                if 'deptask' in task_deps and taskData.tasks_name[task] in task_deps['deptask']:
+                    tasknames = task_deps['deptask'][taskData.tasks_name[task]].split()
+                    for depid in taskData.depids[fnid]:
+                        # Won't be in build_targets if ASSUME_PROVIDED
+                        if depid in taskData.build_targets:
+                            depdata = taskData.build_targets[depid][0]
+                            if depdata is not None:
+                                dep = taskData.fn_index[depdata]
+                                for taskname in tasknames:
+                                    depends.append(taskData.gettask_id(dep, taskname))
+
+                # Resolve 'rdeptask' dependencies 
+                #
+                # e.g. do_sometask[rdeptask] = "do_someothertask"
+                # (makes sure sometask runs after someothertask of all RDEPENDS)
+                if 'rdeptask' in task_deps and taskData.tasks_name[task] in task_deps['rdeptask']:
+                    taskname = task_deps['rdeptask'][taskData.tasks_name[task]]
+                    for depid in taskData.rdepids[fnid]:
+                        if depid in taskData.run_targets:
+                            depdata = taskData.run_targets[depid][0]
+                            if depdata is not None:
+                                dep = taskData.fn_index[depdata]
+                                depends.append(taskData.gettask_id(dep, taskname))
+
+                # Resolve inter-task dependencies 
+                #
+                # e.g. do_sometask[depends] = "targetname:do_someothertask"
+                # (makes sure sometask runs after targetname's someothertask)
+                idepends = taskData.tasks_idepends[task]
+                for (depid, idependtask) in idepends:
+                    if depid in taskData.build_targets:
+                        # Won't be in build_targets if ASSUME_PROVIDED
+                        depdata = taskData.build_targets[depid][0]
+                        if depdata is not None:
+                            dep = taskData.fn_index[depdata]
+                            depends.append(taskData.gettask_id(dep, idependtask))
+
+                # Create a list of recursive dependent tasks (from tdepends) and cache
+                def get_recursive_tdepends(task):
+                    if not task:
+                        return []
+                    if task in recursive_tdepends:
+                        return recursive_tdepends[task]
+
+                    fnid = taskData.tasks_fnid[task]
+                    taskids = taskData.gettask_ids(fnid)
+
+                    rectdepends = taskids
+                    nextdeps = taskids
+                    while len(nextdeps) != 0:
+                        newdeps = []
+                        for nextdep in nextdeps:
+                            for tdepend in taskData.tasks_tdepends[nextdep]:
+                                if tdepend not in rectdepends:
+                                    rectdepends.append(tdepend)
+                                    newdeps.append(tdepend)
+                        nextdeps = newdeps
+                    recursive_tdepends[task] = rectdepends
+                    return rectdepends
+
+                # Using the list of tdepends for this task create a list of 
+                # the recursive idepends we have
+                def get_recursive_idepends(task):
+                    if not task:
+                        return []
+                    rectdepends = get_recursive_tdepends(task)
+
+                    recidepends = []
+                    for tdepend in rectdepends:
+                        for idepend in taskData.tasks_idepends[tdepend]:
+                            recidepends.append(idepend)
+                    return recidepends
+
+                def add_recursive_build(depid, depfnid):
+                    """
+                    Add build depends of depid to depends
+                    (if we've not see it before)
+                    (calls itself recursively)
+                    """
+                    if str(depid) in dep_seen:
+                        return
+                    dep_seen.append(depid)
+                    if depid in taskData.build_targets:
+                        depdata = taskData.build_targets[depid][0]
+                        if depdata is not None:
+                            dep = taskData.fn_index[depdata]
+                            # Need to avoid creating new tasks here
+                            taskid = taskData.gettask_id(dep, taskname, False)
+                            if taskid is not None:
+                                depends.append(taskid)
+                                fnid = taskData.tasks_fnid[taskid]
+                                #print "Added %s (%s) due to %s" % (taskid, taskData.fn_index[fnid], taskData.fn_index[depfnid])
+                            else:
+                                fnid = taskData.getfn_id(dep)
+                            for nextdepid in taskData.depids[fnid]:
+                                if nextdepid not in dep_seen:
+                                    add_recursive_build(nextdepid, fnid)
+                            for nextdepid in taskData.rdepids[fnid]:
+                                if nextdepid not in rdep_seen:
+                                    add_recursive_run(nextdepid, fnid)
+                            for (idependid, idependtask) in get_recursive_idepends(taskid):
+                                if idependid not in dep_seen:
+                                    add_recursive_build(idependid, fnid)
+
+                def add_recursive_run(rdepid, depfnid):
+                    """
+                    Add runtime depends of rdepid to depends
+                    (if we've not see it before)
+                    (calls itself recursively)
+                    """
+                    if str(rdepid) in rdep_seen:
+                        return
+                    rdep_seen.append(rdepid)
+                    if rdepid in taskData.run_targets:
+                        depdata = taskData.run_targets[rdepid][0]
+                        if depdata is not None:
+                            dep = taskData.fn_index[depdata]
+                            # Need to avoid creating new tasks here
+                            taskid = taskData.gettask_id(dep, taskname, False)
+                            if taskid is not None:
+                                depends.append(taskid)
+                                fnid = taskData.tasks_fnid[taskid]
+                                #print "Added %s (%s) due to %s" % (taskid, taskData.fn_index[fnid], taskData.fn_index[depfnid])
+                            else:
+                                fnid = taskData.getfn_id(dep)
+                            for nextdepid in taskData.depids[fnid]:
+                                if nextdepid not in dep_seen:
+                                    add_recursive_build(nextdepid, fnid)
+                            for nextdepid in taskData.rdepids[fnid]:
+                                if nextdepid not in rdep_seen:
+                                    add_recursive_run(nextdepid, fnid)
+                            for (idependid, idependtask) in get_recursive_idepends(taskid):
+                                if idependid not in dep_seen:
+                                    add_recursive_build(idependid, fnid)
+
+                # Resolve recursive 'recrdeptask' dependencies 
+                #
+                # e.g. do_sometask[recrdeptask] = "do_someothertask"
+                # (makes sure sometask runs after someothertask of all DEPENDS, RDEPENDS and intertask dependencies, recursively)
+                if 'recrdeptask' in task_deps and taskData.tasks_name[task] in task_deps['recrdeptask']:
+                    for taskname in task_deps['recrdeptask'][taskData.tasks_name[task]].split():
+                        dep_seen = []
+                        rdep_seen = []
+                        idep_seen = []
+                        for depid in taskData.depids[fnid]:
+                            add_recursive_build(depid, fnid)
+                        for rdepid in taskData.rdepids[fnid]:
+                            add_recursive_run(rdepid, fnid)
+                        deptaskid = taskData.gettask_id(fn, taskname, False)
+                        for (idependid, idependtask) in get_recursive_idepends(deptaskid):
+                            add_recursive_build(idependid, fnid)
+
+                # Rmove all self references
+                if task in depends:
+                    newdep = []
+                    bb.msg.debug(2, bb.msg.domain.RunQueue, "Task %s (%s %s) contains self reference! %s" % (task, taskData.fn_index[taskData.tasks_fnid[task]], taskData.tasks_name[task], depends))
+                    for dep in depends:
+                       if task != dep:
+                          newdep.append(dep)
+                    depends = newdep
+
+
+            self.runq_fnid.append(taskData.tasks_fnid[task])
+            self.runq_task.append(taskData.tasks_name[task])
+            self.runq_depends.append(Set(depends))
+            self.runq_revdeps.append(Set())
+
+            runq_build.append(0)
+
+        # Step B - Mark all active tasks
+        #
+        # Start with the tasks we were asked to run and mark all dependencies
+        # as active too. If the task is to be 'forced', clear its stamp. Once
+        # all active tasks are marked, prune the ones we don't need.
+
+        bb.msg.note(2, bb.msg.domain.RunQueue, "Marking Active Tasks")
+
+        def mark_active(listid, depth):
+            """
+            Mark an item as active along with its depends
+            (calls itself recursively)
+            """
+
+            if runq_build[listid] == 1:
+                return
+
+            runq_build[listid] = 1
+
+            depends = self.runq_depends[listid]
+            for depend in depends:
+                mark_active(depend, depth+1)
+
+        self.target_pairs = []
+        for target in self.targets:
+            targetid = taskData.getbuild_id(target[0])
+
+            if targetid not in taskData.build_targets:
+                continue
+
+            if targetid in taskData.failed_deps:
+                continue
+
+            fnid = taskData.build_targets[targetid][0]
+            fn = taskData.fn_index[fnid]
+            self.target_pairs.append((fn, target[1]))
+
+            # Remove stamps for targets if force mode active
+            if self.cooker.configuration.force:
+                bb.msg.note(2, bb.msg.domain.RunQueue, "Remove stamp %s, %s" % (target[1], fn))
+                bb.build.del_stamp(target[1], self.dataCache, fn)
+
+            if fnid in taskData.failed_fnids:
+                continue
+
+            if target[1] not in taskData.tasks_lookup[fnid]:
+                bb.msg.fatal(bb.msg.domain.RunQueue, "Task %s does not exist for target %s" % (target[1], target[0]))
+
+            listid = taskData.tasks_lookup[fnid][target[1]]
+
+            mark_active(listid, 1)
+
+        # Step C - Prune all inactive tasks
+        #
+        # Once all active tasks are marked, prune the ones we don't need.
+
+        maps = []
+        delcount = 0
+        for listid in range(len(self.runq_fnid)):
+            if runq_build[listid-delcount] == 1:
+                maps.append(listid-delcount)
+            else:
+                del self.runq_fnid[listid-delcount]
+                del self.runq_task[listid-delcount]
+                del self.runq_depends[listid-delcount]
+                del runq_build[listid-delcount]
+                del self.runq_revdeps[listid-delcount]
+                delcount = delcount + 1
+                maps.append(-1)
+
+        #
+        # Step D - Sanity checks and computation
+        #
+
+        # Check to make sure we still have tasks to run
+        if len(self.runq_fnid) == 0:
+            if not taskData.abort:
+                bb.msg.fatal(bb.msg.domain.RunQueue, "All buildable tasks have been run but the build is incomplete (--continue mode). Errors for the tasks that failed will have been printed above.")
+            else:
+                bb.msg.fatal(bb.msg.domain.RunQueue, "No active tasks and not in --continue mode?! Please report this bug.")
+
+        bb.msg.note(2, bb.msg.domain.RunQueue, "Pruned %s inactive tasks, %s left" % (delcount, len(self.runq_fnid)))
+
+        # Remap the dependencies to account for the deleted tasks
+        # Check we didn't delete a task we depend on
+        for listid in range(len(self.runq_fnid)):
+            newdeps = []
+            origdeps = self.runq_depends[listid]
+            for origdep in origdeps:
+                if maps[origdep] == -1:
+                    bb.msg.fatal(bb.msg.domain.RunQueue, "Invalid mapping - Should never happen!")
+                newdeps.append(maps[origdep])
+            self.runq_depends[listid] = Set(newdeps)
+
+        bb.msg.note(2, bb.msg.domain.RunQueue, "Assign Weightings")
+
+        # Generate a list of reverse dependencies to ease future calculations
+        for listid in range(len(self.runq_fnid)):
+            for dep in self.runq_depends[listid]:
+                self.runq_revdeps[dep].add(listid)
+
+        # Identify tasks at the end of dependency chains
+        # Error on circular dependency loops (length two)
+        endpoints = []
+        for listid in range(len(self.runq_fnid)):
+            revdeps = self.runq_revdeps[listid]
+            if len(revdeps) == 0:
+                endpoints.append(listid)
+            for dep in revdeps:
+                if dep in self.runq_depends[listid]:
+                    #self.dump_data(taskData)
+                    bb.msg.fatal(bb.msg.domain.RunQueue, "Task %s (%s) has circular dependency on %s (%s)" % (taskData.fn_index[self.runq_fnid[dep]], self.runq_task[dep] , taskData.fn_index[self.runq_fnid[listid]], self.runq_task[listid]))
+
+        bb.msg.note(2, bb.msg.domain.RunQueue, "Compute totals (have %s endpoint(s))" % len(endpoints))
+
+        # Calculate task weights 
+        # Check of higher length circular dependencies
+        self.runq_weight = self.calculate_task_weights(endpoints)
+
+        # Decide what order to execute the tasks in, pick a scheduler
+        #self.sched = RunQueueScheduler(self)
+        if self.scheduler == "completion":
+            self.sched = RunQueueSchedulerCompletion(self)
+        else:
+            self.sched = RunQueueSchedulerSpeed(self)
+
+        # Sanity Check - Check for multiple tasks building the same provider
+        prov_list = {}
+        seen_fn = []
+        for task in range(len(self.runq_fnid)):
+            fn = taskData.fn_index[self.runq_fnid[task]]
+            if fn in seen_fn:
+                continue
+            seen_fn.append(fn)
+            for prov in self.dataCache.fn_provides[fn]:
+                if prov not in prov_list:
+                    prov_list[prov] = [fn]
+                elif fn not in prov_list[prov]: 
+                    prov_list[prov].append(fn)
+        error = False
+        for prov in prov_list:
+            if len(prov_list[prov]) > 1 and prov not in self.multi_provider_whitelist:
+                error = True
+                bb.msg.error(bb.msg.domain.RunQueue, "Multiple .bb files are due to be built which each provide %s (%s).\n This usually means one provides something the other doesn't and should." % (prov, " ".join(prov_list[prov])))
+        #if error:
+        #    bb.msg.fatal(bb.msg.domain.RunQueue, "Corrupted metadata configuration detected, aborting...")
+
+
+        # Create a whitelist usable by the stamp checks
+        stampfnwhitelist = []
+        for entry in self.stampwhitelist.split():
+            entryid = self.taskData.getbuild_id(entry)
+            if entryid not in self.taskData.build_targets:
+                continue
+            fnid = self.taskData.build_targets[entryid][0]
+            fn = self.taskData.fn_index[fnid]
+            stampfnwhitelist.append(fn)
+        self.stampfnwhitelist = stampfnwhitelist
+
+        #self.dump_data(taskData)
+
+        self.state = runQueueRunInit
+
+    def check_stamps(self):
+        unchecked = {}
+        current = []
+        notcurrent = []
+        buildable = []
+
+        if self.stamppolicy == "perfile":
+            fulldeptree = False
+        else:
+            fulldeptree = True
+            stampwhitelist = []
+            if self.stamppolicy == "whitelist":
+                stampwhitelist = self.self.stampfnwhitelist
+
+        for task in range(len(self.runq_fnid)):
+            unchecked[task] = ""
+            if len(self.runq_depends[task]) == 0:
+                buildable.append(task)
+
+        def check_buildable(self, task, buildable):
+             for revdep in self.runq_revdeps[task]:
+                alldeps = 1
+                for dep in self.runq_depends[revdep]:
+                    if dep in unchecked:
+                        alldeps = 0
+                if alldeps == 1:
+                    if revdep in unchecked:
+                        buildable.append(revdep)
+
+        for task in range(len(self.runq_fnid)):
+            if task not in unchecked:
+                continue
+            fn = self.taskData.fn_index[self.runq_fnid[task]]
+            taskname = self.runq_task[task]
+            stampfile = "%s.%s" % (self.dataCache.stamp[fn], taskname)
+            # If the stamp is missing its not current
+            if not os.access(stampfile, os.F_OK):
+                del unchecked[task]
+                notcurrent.append(task)
+                check_buildable(self, task, buildable)
+                continue
+            # If its a 'nostamp' task, it's not current
+            taskdep = self.dataCache.task_deps[fn]
+            if 'nostamp' in taskdep and task in taskdep['nostamp']:
+                del unchecked[task]
+                notcurrent.append(task)
+                check_buildable(self, task, buildable)
+                continue
+
+        while (len(buildable) > 0):
+            nextbuildable = []
+            for task in buildable:
+                if task in unchecked:
+                    fn = self.taskData.fn_index[self.runq_fnid[task]]
+                    taskname = self.runq_task[task]
+                    stampfile = "%s.%s" % (self.dataCache.stamp[fn], taskname)
+                    iscurrent = True
+
+                    t1 = os.stat(stampfile)[stat.ST_MTIME]
+                    for dep in self.runq_depends[task]:
+                        if iscurrent:
+                            fn2 = self.taskData.fn_index[self.runq_fnid[dep]]
+                            taskname2 = self.runq_task[dep]
+                            stampfile2 = "%s.%s" % (self.dataCache.stamp[fn2], taskname2)
+                            if fn == fn2 or (fulldeptree and fn2 not in stampwhitelist):
+                                if dep in notcurrent:
+                                    iscurrent = False
+                                else:
+                                    t2 = os.stat(stampfile2)[stat.ST_MTIME]
+                                    if t1 < t2:
+                                        iscurrent = False
+                    del unchecked[task]
+                    if iscurrent:
+                        current.append(task)
+                    else:
+                        notcurrent.append(task)
+
+                check_buildable(self, task, nextbuildable)
+
+            buildable = nextbuildable
+
+        #for task in range(len(self.runq_fnid)):
+        #    fn = self.taskData.fn_index[self.runq_fnid[task]]
+        #    taskname = self.runq_task[task]
+        #    print "%s %s.%s" % (task, taskname, fn)
+
+        #print "Unchecked: %s" % unchecked
+        #print "Current: %s" % current
+        #print "Not current: %s" % notcurrent
+
+        if len(unchecked) > 0:
+            bb.fatal("check_stamps fatal internal error")
+        return current
+
+    def check_stamp_task(self, task):
+
+        if self.stamppolicy == "perfile":
+            fulldeptree = False
+        else:
+            fulldeptree = True
+            stampwhitelist = []
+            if self.stamppolicy == "whitelist":
+                stampwhitelist = self.stampfnwhitelist
+
+        fn = self.taskData.fn_index[self.runq_fnid[task]]
+        taskname = self.runq_task[task]
+        stampfile = "%s.%s" % (self.dataCache.stamp[fn], taskname)
+        # If the stamp is missing its not current
+        if not os.access(stampfile, os.F_OK):
+            bb.msg.debug(2, bb.msg.domain.RunQueue, "Stampfile %s not available\n" % stampfile)
+            return False
+        # If its a 'nostamp' task, it's not current
+        taskdep = self.dataCache.task_deps[fn]
+        if 'nostamp' in taskdep and task in taskdep['nostamp']:
+            bb.msg.debug(2, bb.msg.domain.RunQueue, "%s.%s is nostamp\n" % (fn, taskname))
+            return False
+
+        iscurrent = True
+        t1 =  os.stat(stampfile)[stat.ST_MTIME]
+        for dep in self.runq_depends[task]:
+            if iscurrent:
+                fn2 = self.taskData.fn_index[self.runq_fnid[dep]]
+                taskname2 = self.runq_task[dep]
+                stampfile2 = "%s.%s" % (self.dataCache.stamp[fn2], taskname2)
+                if fn == fn2 or (fulldeptree and fn2 not in stampwhitelist):
+                    try:
+                        t2 = os.stat(stampfile2)[stat.ST_MTIME]
+                        if t1 < t2:
+                            bb.msg.debug(2, bb.msg.domain.RunQueue, "Stampfile %s < %s" % (stampfile,stampfile2))
+                            iscurrent = False
+                    except:
+                        bb.msg.debug(2, bb.msg.domain.RunQueue, "Exception reading %s for %s" % (stampfile2 ,stampfile))
+                        iscurrent = False
+
+        return iscurrent
+
+    def execute_runqueue(self):
+        """
+        Run the tasks in a queue prepared by prepare_runqueue
+        Upon failure, optionally try to recover the build using any alternate providers
+        (if the abort on failure configuration option isn't set)
+        """
+
+        if self.state is runQueuePrepare:
+            self.prepare_runqueue()
+
+        if self.state is runQueueRunInit:
+            bb.msg.note(1, bb.msg.domain.RunQueue, "Executing runqueue")
+            self.execute_runqueue_initVars()
+
+        if self.state is runQueueRunning:
+            self.execute_runqueue_internal()
+
+        if self.state is runQueueCleanUp:
+            self.finish_runqueue()
+
+        if self.state is runQueueFailed:
+            if self.taskData.abort:
+                raise bb.runqueue.TaskFailure(self.failed_fnids)
+            for fnid in self.failed_fnids:
+                self.taskData.fail_fnid(fnid)
+            self.reset_runqueue()
+
+        if self.state is runQueueComplete:
+            # All done
+            bb.msg.note(1, bb.msg.domain.RunQueue, "Tasks Summary: Attempted %d tasks of which %d didn't need to be rerun and %d failed." % (self.stats.completed, self.stats.skipped, self.stats.failed))
+            return False
+
+        if self.state is runQueueChildProcess:
+            print "Child process"
+            return False
+
+        # Loop
+        return True
+
+    def execute_runqueue_initVars(self):
+
+        self.stats = RunQueueStats(len(self.runq_fnid))
+
+        self.runq_buildable = []
+        self.runq_running = []
+        self.runq_complete = []
+        self.build_pids = {}
+        self.failed_fnids = []
+
+        # Mark initial buildable tasks
+        for task in range(self.stats.total):
+            self.runq_running.append(0)
+            self.runq_complete.append(0)
+            if len(self.runq_depends[task]) == 0:
+                self.runq_buildable.append(1)
+            else:
+                self.runq_buildable.append(0)
+
+        self.state = runQueueRunning
+
+        event.fire(bb.event.StampUpdate(self.target_pairs, self.dataCache.stamp, self.cfgData))
+
+    def task_complete(self, task):
+        """
+        Mark a task as completed
+        Look at the reverse dependencies and mark any task with 
+        completed dependencies as buildable
+        """
+        self.runq_complete[task] = 1
+        for revdep in self.runq_revdeps[task]:
+            if self.runq_running[revdep] == 1:
+                continue
+            if self.runq_buildable[revdep] == 1:
+                continue
+            alldeps = 1
+            for dep in self.runq_depends[revdep]:
+                if self.runq_complete[dep] != 1:
+                    alldeps = 0
+            if alldeps == 1:
+                self.runq_buildable[revdep] = 1
+                fn = self.taskData.fn_index[self.runq_fnid[revdep]]
+                taskname = self.runq_task[revdep]
+                bb.msg.debug(1, bb.msg.domain.RunQueue, "Marking task %s (%s, %s) as buildable" % (revdep, fn, taskname))
+
+    def task_fail(self, task, exitcode):
+        """
+        Called when a task has failed
+        Updates the state engine with the failure
+        """
+        bb.msg.error(bb.msg.domain.RunQueue, "Task %s (%s) failed with %s" % (task, self.get_user_idstring(task), exitcode))
+        self.stats.taskFailed()
+        fnid = self.runq_fnid[task]
+        self.failed_fnids.append(fnid)
+        bb.event.fire(runQueueTaskFailed(task, self.stats, self, self.cfgData))
+        if self.taskData.abort:
+            self.state = runQueueCleanup
+
+    def execute_runqueue_internal(self):
+        """
+        Run the tasks in a queue prepared by prepare_runqueue
+        """
+
+        if self.stats.total == 0:
+            # nothing to do
+            self.state = runQueueCleanup
+
+        while True:
+            task = None
+            if self.stats.active < self.number_tasks:
+                task = self.sched.next()
+            if task is not None:
+                fn = self.taskData.fn_index[self.runq_fnid[task]]
+
+                taskname = self.runq_task[task]
+                if self.check_stamp_task(task):
+                    bb.msg.debug(2, bb.msg.domain.RunQueue, "Stamp current task %s (%s)" % (task, self.get_user_idstring(task)))
+                    self.runq_running[task] = 1
+                    self.runq_buildable[task] = 1
+                    self.task_complete(task)
+                    self.stats.taskCompleted()
+                    self.stats.taskSkipped()
+                    continue
+
+                bb.event.fire(runQueueTaskStarted(task, self.stats, self, self.cfgData))
+                bb.msg.note(1, bb.msg.domain.RunQueue, "Running task %d of %d (ID: %s, %s)" % (self.stats.completed + self.stats.active + 1, self.stats.total, task, self.get_user_idstring(task)))
+                sys.stdout.flush()
+                sys.stderr.flush()
+                try: 
+                    pid = os.fork() 
+                except OSError, e: 
+                    bb.msg.fatal(bb.msg.domain.RunQueue, "fork failed: %d (%s)" % (e.errno, e.strerror))
+                if pid == 0:
+                    self.state = runQueueChildProcess
+                    # Make the child the process group leader
+                    os.setpgid(0, 0)
+                    newsi = os.open('/dev/null', os.O_RDWR)
+                    os.dup2(newsi, sys.stdin.fileno())
+                    self.cooker.configuration.cmd = taskname[3:]
+                    bb.data.setVar("__RUNQUEUE_DO_NOT_USE_EXTERNALLY", self, self.cooker.configuration.data)
+                    try:
+                        self.cooker.tryBuild(fn)
+                    except bb.build.EventException:
+                        bb.msg.error(bb.msg.domain.Build, "Build of " + fn + " " + taskname + " failed")
+                        sys.exit(1)
+                    except:
+                        bb.msg.error(bb.msg.domain.Build, "Build of " + fn + " " + taskname + " failed")
+                        raise
+                    sys.exit(0)
+                self.build_pids[pid] = task
+                self.runq_running[task] = 1
+                self.stats.taskActive()
+                if self.stats.active < self.number_tasks:
+                    continue
+            if self.stats.active > 0:
+                result = os.waitpid(-1, os.WNOHANG)
+                if result[0] is 0 and result[1] is 0:
+                    return
+                task = self.build_pids[result[0]]
+                del self.build_pids[result[0]]
+                if result[1] != 0:
+                    self.task_fail(task, result[1])
+                    return
+                self.task_complete(task)
+                self.stats.taskCompleted()
+                bb.event.fire(runQueueTaskCompleted(task, self.stats, self, self.cfgData))
+                continue
+
+            if len(self.failed_fnids) != 0:
+                self.state = runQueueFailed
+                return
+
+            # Sanity Checks
+            for task in range(self.stats.total):
+                if self.runq_buildable[task] == 0:
+                    bb.msg.error(bb.msg.domain.RunQueue, "Task %s never buildable!" % task)
+                if self.runq_running[task] == 0:
+                    bb.msg.error(bb.msg.domain.RunQueue, "Task %s never ran!" % task)
+                if self.runq_complete[task] == 0:
+                    bb.msg.error(bb.msg.domain.RunQueue, "Task %s never completed!" % task)
+            self.state = runQueueComplete
+            return
+
+    def finish_runqueue_now(self):
+        bb.msg.note(1, bb.msg.domain.RunQueue, "Sending SIGINT to remaining %s tasks" % self.stats.active)
+        for k, v in self.build_pids.iteritems():
+             try:
+                 os.kill(-k, signal.SIGINT)
+             except:
+                 pass
+
+    def finish_runqueue(self, now = False):
+        self.state = runQueueCleanUp
+        if now:
+            self.finish_runqueue_now()
+        try:
+            while self.stats.active > 0:
+                bb.event.fire(runQueueExitWait(self.stats.active, self.cfgData))
+                bb.msg.note(1, bb.msg.domain.RunQueue, "Waiting for %s active tasks to finish" % self.stats.active)
+                tasknum = 1
+                for k, v in self.build_pids.iteritems():
+                    bb.msg.note(1, bb.msg.domain.RunQueue, "%s: %s (%s)" % (tasknum, self.get_user_idstring(v), k))
+                    tasknum = tasknum + 1
+                result = os.waitpid(-1, os.WNOHANG)
+                if result[0] is 0 and result[1] is 0:
+                    return
+                task = self.build_pids[result[0]]
+                del self.build_pids[result[0]]
+                if result[1] != 0:
+                    self.task_fail(task, result[1])
+                else:
+                    self.stats.taskCompleted()
+                    bb.event.fire(runQueueTaskCompleted(task, self.stats, self, self.cfgData))
+        except:
+            self.finish_runqueue_now()
+            raise
+
+        if len(self.failed_fnids) != 0:
+            self.state = runQueueFailed
+            return
+
+        self.state = runQueueComplete
+        return
+
+    def dump_data(self, taskQueue):
+        """
+        Dump some debug information on the internal data structures
+        """
+        bb.msg.debug(3, bb.msg.domain.RunQueue, "run_tasks:")
+        for task in range(len(self.runq_task)):
+                bb.msg.debug(3, bb.msg.domain.RunQueue, " (%s)%s - %s: %s   Deps %s RevDeps %s" % (task, 
+                        taskQueue.fn_index[self.runq_fnid[task]], 
+                        self.runq_task[task], 
+                        self.runq_weight[task], 
+                        self.runq_depends[task], 
+                        self.runq_revdeps[task]))
+
+        bb.msg.debug(3, bb.msg.domain.RunQueue, "sorted_tasks:")
+        for task1 in range(len(self.runq_task)):
+            if task1 in self.prio_map:
+                task = self.prio_map[task1]
+                bb.msg.debug(3, bb.msg.domain.RunQueue, " (%s)%s - %s: %s   Deps %s RevDeps %s" % (task, 
+                        taskQueue.fn_index[self.runq_fnid[task]], 
+                        self.runq_task[task], 
+                        self.runq_weight[task], 
+                        self.runq_depends[task], 
+                        self.runq_revdeps[task]))
+
+
+class TaskFailure(Exception):
+    """
+    Exception raised when a task in a runqueue fails
+    """
+    def __init__(self, x): 
+        self.args = x
+
+
+class runQueueExitWait(bb.event.Event):
+    """
+    Event when waiting for task processes to exit
+    """
+
+    def __init__(self, remain, d):
+        self.remain = remain
+        self.message = "Waiting for %s active tasks to finish" % remain
+        bb.event.Event.__init__(self, d)
+
+class runQueueEvent(bb.event.Event):
+    """
+    Base runQueue event class
+    """
+    def __init__(self, task, stats, rq, d):
+        self.taskid = task
+        self.taskstring = rq.get_user_idstring(task)
+        self.stats = stats
+        bb.event.Event.__init__(self, d)
+
+class runQueueTaskStarted(runQueueEvent):
+    """
+    Event notifing a task was started
+    """
+    def __init__(self, task, stats, rq, d):
+        runQueueEvent.__init__(self, task, stats, rq, d)
+        self.message = "Running task %s (%d of %d) (%s)" % (task, stats.completed + stats.active + 1, self.stats.total, self.taskstring)
+
+class runQueueTaskFailed(runQueueEvent):
+    """
+    Event notifing a task failed
+    """
+    def __init__(self, task, stats, rq, d):
+        runQueueEvent.__init__(self, task, stats, rq, d)
+        self.message = "Task %s failed (%s)" % (task, self.taskstring)
+
+class runQueueTaskCompleted(runQueueEvent):
+    """
+    Event notifing a task completed
+    """
+    def __init__(self, task, stats, rq, d):
+        runQueueEvent.__init__(self, task, stats, rq, d)
+        self.message = "Task %s completed (%s)" % (task, self.taskstring)
+
+def check_stamp_fn(fn, taskname, d):
+    rq = bb.data.getVar("__RUNQUEUE_DO_NOT_USE_EXTERNALLY", d)
+    fnid = rq.taskData.getfn_id(fn)
+    taskid = rq.get_task_id(fnid, taskname)
+    if taskid is not None:
+        return rq.check_stamp_task(taskid)
+    return None
diff --git a/bitbake-dev/lib/bb/shell.py b/bitbake-dev/lib/bb/shell.py
new file mode 100644
index 0000000000..34828fe425
--- /dev/null
+++ b/bitbake-dev/lib/bb/shell.py
@@ -0,0 +1,827 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+##########################################################################
+#
+# Copyright (C) 2005-2006 Michael 'Mickey' Lauer <mickey@Vanille.de>
+# Copyright (C) 2005-2006 Vanille Media
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+##########################################################################
+#
+# Thanks to:
+# * Holger Freyther <zecke@handhelds.org>
+# * Justin Patrin <papercrane@reversefold.com>
+#
+##########################################################################
+
+"""
+BitBake Shell
+
+IDEAS:
+    * list defined tasks per package
+    * list classes
+    * toggle force
+    * command to reparse just one (or more) bbfile(s)
+    * automatic check if reparsing is necessary (inotify?)
+    * frontend for bb file manipulation
+    * more shell-like features:
+        - output control, i.e. pipe output into grep, sort, etc.
+        - job control, i.e. bring running commands into background and foreground
+    * start parsing in background right after startup
+    * ncurses interface
+
+PROBLEMS:
+    * force doesn't always work
+    * readline completion for commands with more than one parameters
+
+"""
+
+##########################################################################
+# Import and setup global variables
+##########################################################################
+
+try:
+    set
+except NameError:
+    from sets import Set as set
+import sys, os, readline, socket, httplib, urllib, commands, popen2, copy, shlex, Queue, fnmatch
+from bb import data, parse, build, fatal, cache, taskdata, runqueue, providers as Providers
+
+__version__ = "0.5.3.1"
+__credits__ = """BitBake Shell Version %s (C) 2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
+Type 'help' for more information, press CTRL-D to exit.""" % __version__
+
+cmds = {}
+leave_mainloop = False
+last_exception = None
+cooker = None
+parsed = False
+debug = os.environ.get( "BBSHELL_DEBUG", "" )
+
+##########################################################################
+# Class BitBakeShellCommands
+##########################################################################
+
+class BitBakeShellCommands:
+    """This class contains the valid commands for the shell"""
+
+    def __init__( self, shell ):
+        """Register all the commands"""
+        self._shell = shell
+        for attr in BitBakeShellCommands.__dict__:
+            if not attr.startswith( "_" ):
+                if attr.endswith( "_" ):
+                    command = attr[:-1].lower()
+                else:
+                    command = attr[:].lower()
+                method = getattr( BitBakeShellCommands, attr )
+                debugOut( "registering command '%s'" % command )
+                # scan number of arguments
+                usage = getattr( method, "usage", "" )
+                if usage != "<...>":
+                    numArgs = len( usage.split() )
+                else:
+                    numArgs = -1
+                shell.registerCommand( command, method, numArgs, "%s %s" % ( command, usage ), method.__doc__ )
+
+    def _checkParsed( self ):
+        if not parsed:
+            print "SHELL: This command needs to parse bbfiles..."
+            self.parse( None )
+
+    def _findProvider( self, item ):
+        self._checkParsed()
+        # Need to use taskData for this information
+        preferred = data.getVar( "PREFERRED_PROVIDER_%s" % item, cooker.configuration.data, 1 )
+        if not preferred: preferred = item
+        try:
+            lv, lf, pv, pf = Providers.findBestProvider(preferred, cooker.configuration.data, cooker.status)
+        except KeyError:
+            if item in cooker.status.providers:
+                pf = cooker.status.providers[item][0]
+            else:
+                pf = None
+        return pf
+
+    def alias( self, params ):
+        """Register a new name for a command"""
+        new, old = params
+        if not old in cmds:
+            print "ERROR: Command '%s' not known" % old
+        else:
+            cmds[new] = cmds[old]
+            print "OK"
+    alias.usage = "<alias> <command>"
+
+    def buffer( self, params ):
+        """Dump specified output buffer"""
+        index = params[0]
+        print self._shell.myout.buffer( int( index ) )
+    buffer.usage = "<index>"
+
+    def buffers( self, params ):
+        """Show the available output buffers"""
+        commands = self._shell.myout.bufferedCommands()
+        if not commands:
+            print "SHELL: No buffered commands available yet. Start doing something."
+        else:
+            print "="*35, "Available Output Buffers", "="*27
+            for index, cmd in enumerate( commands ):
+                print "| %s %s" % ( str( index ).ljust( 3 ), cmd )
+            print "="*88
+
+    def build( self, params, cmd = "build" ):
+        """Build a providee"""
+        global last_exception
+        globexpr = params[0]
+        self._checkParsed()
+        names = globfilter( cooker.status.pkg_pn.keys(), globexpr )
+        if len( names ) == 0: names = [ globexpr ]
+        print "SHELL: Building %s" % ' '.join( names )
+
+        oldcmd = cooker.configuration.cmd
+        cooker.configuration.cmd = cmd
+
+        td = taskdata.TaskData(cooker.configuration.abort)
+        localdata = data.createCopy(cooker.configuration.data)
+        data.update_data(localdata)
+        data.expandKeys(localdata)
+
+        try:
+            tasks = []
+            for name in names:
+                td.add_provider(localdata, cooker.status, name)
+                providers = td.get_provider(name)
+
+                if len(providers) == 0:
+                    raise Providers.NoProvider
+
+                tasks.append([name, "do_%s" % cooker.configuration.cmd])
+
+            td.add_unresolved(localdata, cooker.status)
+            
+            rq = runqueue.RunQueue(cooker, localdata, cooker.status, td, tasks)
+            rq.prepare_runqueue()
+            rq.execute_runqueue()
+
+        except Providers.NoProvider:
+            print "ERROR: No Provider"
+            last_exception = Providers.NoProvider
+
+        except runqueue.TaskFailure, fnids:
+            for fnid in fnids:
+                print "ERROR: '%s' failed" % td.fn_index[fnid]
+            last_exception = runqueue.TaskFailure
+
+        except build.EventException, e:
+            print "ERROR: Couldn't build '%s'" % names
+            last_exception = e
+
+        cooker.configuration.cmd = oldcmd
+
+    build.usage = "<providee>"
+
+    def clean( self, params ):
+        """Clean a providee"""
+        self.build( params, "clean" )
+    clean.usage = "<providee>"
+
+    def compile( self, params ):
+        """Execute 'compile' on a providee"""
+        self.build( params, "compile" )
+    compile.usage = "<providee>"
+
+    def configure( self, params ):
+        """Execute 'configure' on a providee"""
+        self.build( params, "configure" )
+    configure.usage = "<providee>"
+
+    def edit( self, params ):
+        """Call $EDITOR on a providee"""
+        name = params[0]
+        bbfile = self._findProvider( name )
+        if bbfile is not None:
+            os.system( "%s %s" % ( os.environ.get( "EDITOR", "vi" ), bbfile ) )
+        else:
+            print "ERROR: Nothing provides '%s'" % name
+    edit.usage = "<providee>"
+
+    def environment( self, params ):
+        """Dump out the outer BitBake environment"""
+        cooker.showEnvironment()
+
+    def exit_( self, params ):
+        """Leave the BitBake Shell"""
+        debugOut( "setting leave_mainloop to true" )
+        global leave_mainloop
+        leave_mainloop = True
+
+    def fetch( self, params ):
+        """Fetch a providee"""
+        self.build( params, "fetch" )
+    fetch.usage = "<providee>"
+
+    def fileBuild( self, params, cmd = "build" ):
+        """Parse and build a .bb file"""
+        global last_exception
+        name = params[0]
+        bf = completeFilePath( name )
+        print "SHELL: Calling '%s' on '%s'" % ( cmd, bf )
+
+        oldcmd = cooker.configuration.cmd
+        cooker.configuration.cmd = cmd
+
+        try:
+            cooker.buildFile(bf)
+        except parse.ParseError:
+            print "ERROR: Unable to open or parse '%s'" % bf
+        except build.EventException, e:
+            print "ERROR: Couldn't build '%s'" % name
+            last_exception = e
+
+        cooker.configuration.cmd = oldcmd
+    fileBuild.usage = "<bbfile>"
+
+    def fileClean( self, params ):
+        """Clean a .bb file"""
+        self.fileBuild( params, "clean" )
+    fileClean.usage = "<bbfile>"
+
+    def fileEdit( self, params ):
+        """Call $EDITOR on a .bb file"""
+        name = params[0]
+        os.system( "%s %s" % ( os.environ.get( "EDITOR", "vi" ), completeFilePath( name ) ) )
+    fileEdit.usage = "<bbfile>"
+
+    def fileRebuild( self, params ):
+        """Rebuild (clean & build) a .bb file"""
+        self.fileBuild( params, "rebuild" )
+    fileRebuild.usage = "<bbfile>"
+
+    def fileReparse( self, params ):
+        """(re)Parse a bb file"""
+        bbfile = params[0]
+        print "SHELL: Parsing '%s'" % bbfile
+        parse.update_mtime( bbfile )
+        cooker.bb_cache.cacheValidUpdate(bbfile)
+        fromCache = cooker.bb_cache.loadData(bbfile, cooker.configuration.data)
+        cooker.bb_cache.sync()
+        if False: #fromCache:
+            print "SHELL: File has not been updated, not reparsing"
+        else:
+            print "SHELL: Parsed"
+    fileReparse.usage = "<bbfile>"
+
+    def abort( self, params ):
+        """Toggle abort task execution flag (see bitbake -k)"""
+        cooker.configuration.abort = not cooker.configuration.abort
+        print "SHELL: Abort Flag is now '%s'" % repr( cooker.configuration.abort )
+
+    def force( self, params ):
+        """Toggle force task execution flag (see bitbake -f)"""
+        cooker.configuration.force = not cooker.configuration.force
+        print "SHELL: Force Flag is now '%s'" % repr( cooker.configuration.force )
+
+    def help( self, params ):
+        """Show a comprehensive list of commands and their purpose"""
+        print "="*30, "Available Commands", "="*30
+        allcmds = cmds.keys()
+        allcmds.sort()
+        for cmd in allcmds:
+            function,numparams,usage,helptext = cmds[cmd]
+            print "| %s | %s" % (usage.ljust(30), helptext)
+        print "="*78
+
+    def lastError( self, params ):
+        """Show the reason or log that was produced by the last BitBake event exception"""
+        if last_exception is None:
+            print "SHELL: No Errors yet (Phew)..."
+        else:
+            reason, event = last_exception.args
+            print "SHELL: Reason for the last error: '%s'" % reason
+            if ':' in reason:
+                msg, filename = reason.split( ':' )
+                filename = filename.strip()
+                print "SHELL: Dumping log file for last error:"
+                try:
+                    print open( filename ).read()
+                except IOError:
+                    print "ERROR: Couldn't open '%s'" % filename
+
+    def match( self, params ):
+        """Dump all files or providers matching a glob expression"""
+        what, globexpr = params
+        if what == "files":
+            self._checkParsed()
+            for key in globfilter( cooker.status.pkg_fn.keys(), globexpr ): print key
+        elif what == "providers":
+            self._checkParsed()
+            for key in globfilter( cooker.status.pkg_pn.keys(), globexpr ): print key
+        else:
+            print "Usage: match %s" % self.print_.usage
+    match.usage = "<files|providers> <glob>"
+
+    def new( self, params ):
+        """Create a new .bb file and open the editor"""
+        dirname, filename = params
+        packages = '/'.join( data.getVar( "BBFILES", cooker.configuration.data, 1 ).split('/')[:-2] )
+        fulldirname = "%s/%s" % ( packages, dirname )
+
+        if not os.path.exists( fulldirname ):
+            print "SHELL: Creating '%s'" % fulldirname
+            os.mkdir( fulldirname )
+        if os.path.exists( fulldirname ) and os.path.isdir( fulldirname ):
+            if os.path.exists( "%s/%s" % ( fulldirname, filename ) ):
+                print "SHELL: ERROR: %s/%s already exists" % ( fulldirname, filename )
+                return False
+            print "SHELL: Creating '%s/%s'" % ( fulldirname, filename )
+            newpackage = open( "%s/%s" % ( fulldirname, filename ), "w" )
+            print >>newpackage,"""DESCRIPTION = ""
+SECTION = ""
+AUTHOR = ""
+HOMEPAGE = ""
+MAINTAINER = ""
+LICENSE = "GPL"
+PR = "r0"
+
+SRC_URI = ""
+
+#inherit base
+
+#do_configure() {
+#
+#}
+
+#do_compile() {
+#
+#}
+
+#do_stage() {
+#
+#}
+
+#do_install() {
+#
+#}
+"""
+            newpackage.close()
+            os.system( "%s %s/%s" % ( os.environ.get( "EDITOR" ), fulldirname, filename ) )
+    new.usage = "<directory> <filename>"
+
+    def package( self, params ):
+        """Execute 'package' on a providee"""
+        self.build( params, "package" )
+    package.usage = "<providee>"
+
+    def pasteBin( self, params ):
+        """Send a command + output buffer to the pastebin at http://rafb.net/paste"""
+        index = params[0]
+        contents = self._shell.myout.buffer( int( index ) )
+        sendToPastebin( "output of " + params[0], contents )
+    pasteBin.usage = "<index>"
+
+    def pasteLog( self, params ):
+        """Send the last event exception error log (if there is one) to http://rafb.net/paste"""
+        if last_exception is None:
+            print "SHELL: No Errors yet (Phew)..."
+        else:
+            reason, event = last_exception.args
+            print "SHELL: Reason for the last error: '%s'" % reason
+            if ':' in reason:
+                msg, filename = reason.split( ':' )
+                filename = filename.strip()
+                print "SHELL: Pasting log file to pastebin..."
+
+                file = open( filename ).read()
+                sendToPastebin( "contents of " + filename, file )
+
+    def patch( self, params ):
+        """Execute 'patch' command on a providee"""
+        self.build( params, "patch" )
+    patch.usage = "<providee>"
+
+    def parse( self, params ):
+        """(Re-)parse .bb files and calculate the dependency graph"""
+        cooker.status = cache.CacheData()
+        ignore = data.getVar("ASSUME_PROVIDED", cooker.configuration.data, 1) or ""
+        cooker.status.ignored_dependencies = set( ignore.split() )
+        cooker.handleCollections( data.getVar("BBFILE_COLLECTIONS", cooker.configuration.data, 1) )
+
+        (filelist, masked) = cooker.collect_bbfiles()
+        cooker.parse_bbfiles(filelist, masked, cooker.myProgressCallback)
+        cooker.buildDepgraph()
+        global parsed
+        parsed = True
+        print
+
+    def reparse( self, params ):
+        """(re)Parse a providee's bb file"""
+        bbfile = self._findProvider( params[0] )
+        if bbfile is not None:
+            print "SHELL: Found bbfile '%s' for '%s'" % ( bbfile, params[0] )
+            self.fileReparse( [ bbfile ] )
+        else:
+            print "ERROR: Nothing provides '%s'" % params[0]
+    reparse.usage = "<providee>"
+
+    def getvar( self, params ):
+        """Dump the contents of an outer BitBake environment variable"""
+        var = params[0]
+        value = data.getVar( var, cooker.configuration.data, 1 )
+        print value
+    getvar.usage = "<variable>"
+
+    def peek( self, params ):
+        """Dump contents of variable defined in providee's metadata"""
+        name, var = params
+        bbfile = self._findProvider( name )
+        if bbfile is not None:
+            the_data = cooker.bb_cache.loadDataFull(bbfile, cooker.configuration.data)
+            value = the_data.getVar( var, 1 )
+            print value
+        else:
+            print "ERROR: Nothing provides '%s'" % name
+    peek.usage = "<providee> <variable>"
+
+    def poke( self, params ):
+        """Set contents of variable defined in providee's metadata"""
+        name, var, value = params
+        bbfile = self._findProvider( name )
+        if bbfile is not None:
+            print "ERROR: Sorry, this functionality is currently broken"
+            #d = cooker.pkgdata[bbfile]
+            #data.setVar( var, value, d )
+
+            # mark the change semi persistant
+            #cooker.pkgdata.setDirty(bbfile, d)
+            #print "OK"
+        else:
+            print "ERROR: Nothing provides '%s'" % name
+    poke.usage = "<providee> <variable> <value>"
+
+    def print_( self, params ):
+        """Dump all files or providers"""
+        what = params[0]
+        if what == "files":
+            self._checkParsed()
+            for key in cooker.status.pkg_fn.keys(): print key
+        elif what == "providers":
+            self._checkParsed()
+            for key in cooker.status.providers.keys(): print key
+        else:
+            print "Usage: print %s" % self.print_.usage
+    print_.usage = "<files|providers>"
+
+    def python( self, params ):
+        """Enter the expert mode - an interactive BitBake Python Interpreter"""
+        sys.ps1 = "EXPERT BB>>> "
+        sys.ps2 = "EXPERT BB... "
+        import code
+        interpreter = code.InteractiveConsole( dict( globals() ) )
+        interpreter.interact( "SHELL: Expert Mode - BitBake Python %s\nType 'help' for more information, press CTRL-D to switch back to BBSHELL." % sys.version )
+
+    def showdata( self, params ):
+        """Execute 'showdata' on a providee"""
+        cooker.showEnvironment(None, params)
+    showdata.usage = "<providee>"
+
+    def setVar( self, params ):
+        """Set an outer BitBake environment variable"""
+        var, value = params
+        data.setVar( var, value, cooker.configuration.data )
+        print "OK"
+    setVar.usage = "<variable> <value>"
+
+    def rebuild( self, params ):
+        """Clean and rebuild a .bb file or a providee"""
+        self.build( params, "clean" )
+        self.build( params, "build" )
+    rebuild.usage = "<providee>"
+
+    def shell( self, params ):
+        """Execute a shell command and dump the output"""
+        if params != "":
+            print commands.getoutput( " ".join( params ) )
+    shell.usage = "<...>"
+
+    def stage( self, params ):
+        """Execute 'stage' on a providee"""
+        self.build( params, "stage" )
+    stage.usage = "<providee>"
+
+    def status( self, params ):
+        """<just for testing>"""
+        print "-" * 78
+        print "building list = '%s'" % cooker.building_list
+        print "build path = '%s'" % cooker.build_path
+        print "consider_msgs_cache = '%s'" % cooker.consider_msgs_cache
+        print "build stats = '%s'" % cooker.stats
+        if last_exception is not None: print "last_exception = '%s'" % repr( last_exception.args )
+        print "memory output contents = '%s'" % self._shell.myout._buffer
+
+    def test( self, params ):
+        """<just for testing>"""
+        print "testCommand called with '%s'" % params
+
+    def unpack( self, params ):
+        """Execute 'unpack' on a providee"""
+        self.build( params, "unpack" )
+    unpack.usage = "<providee>"
+
+    def which( self, params ):
+        """Computes the providers for a given providee"""
+        # Need to use taskData for this information
+        item = params[0]
+
+        self._checkParsed()
+
+        preferred = data.getVar( "PREFERRED_PROVIDER_%s" % item, cooker.configuration.data, 1 )
+        if not preferred: preferred = item
+
+        try:
+            lv, lf, pv, pf = Providers.findBestProvider(preferred, cooker.configuration.data, cooker.status)
+        except KeyError:
+            lv, lf, pv, pf = (None,)*4
+
+        try:
+            providers = cooker.status.providers[item]
+        except KeyError:
+            print "SHELL: ERROR: Nothing provides", preferred
+        else:
+            for provider in providers:
+                if provider == pf: provider = " (***) %s" % provider
+                else:              provider = "       %s" % provider
+                print provider
+    which.usage = "<providee>"
+
+##########################################################################
+# Common helper functions
+##########################################################################
+
+def completeFilePath( bbfile ):
+    """Get the complete bbfile path"""
+    if not cooker.status: return bbfile
+    if not cooker.status.pkg_fn: return bbfile
+    for key in cooker.status.pkg_fn.keys():
+        if key.endswith( bbfile ):
+            return key
+    return bbfile
+
+def sendToPastebin( desc, content ):
+    """Send content to http://oe.pastebin.com"""
+    mydata = {}
+    mydata["lang"] = "Plain Text"
+    mydata["desc"] = desc
+    mydata["cvt_tabs"] = "No"
+    mydata["nick"] = "%s@%s" % ( os.environ.get( "USER", "unknown" ), socket.gethostname() or "unknown" )
+    mydata["text"] = content
+    params = urllib.urlencode( mydata )
+    headers = {"Content-type": "application/x-www-form-urlencoded","Accept": "text/plain"}
+
+    host = "rafb.net"
+    conn = httplib.HTTPConnection( "%s:80" % host )
+    conn.request("POST", "/paste/paste.php", params, headers )
+
+    response = conn.getresponse()
+    conn.close()
+
+    if response.status == 302:
+        location = response.getheader( "location" ) or "unknown"
+        print "SHELL: Pasted to http://%s%s" % ( host, location )
+    else:
+        print "ERROR: %s %s" % ( response.status, response.reason )
+
+def completer( text, state ):
+    """Return a possible readline completion"""
+    debugOut( "completer called with text='%s', state='%d'" % ( text, state ) )
+
+    if state == 0:
+        line = readline.get_line_buffer()
+        if " " in line:
+            line = line.split()
+            # we are in second (or more) argument
+            if line[0] in cmds and hasattr( cmds[line[0]][0], "usage" ): # known command and usage
+                u = getattr( cmds[line[0]][0], "usage" ).split()[0]
+                if u == "<variable>":
+                    allmatches = cooker.configuration.data.keys()
+                elif u == "<bbfile>":
+                    if cooker.status.pkg_fn is None: allmatches = [ "(No Matches Available. Parsed yet?)" ]
+                    else: allmatches = [ x.split("/")[-1] for x in cooker.status.pkg_fn.keys() ]
+                elif u == "<providee>":
+                    if cooker.status.pkg_fn is None: allmatches = [ "(No Matches Available. Parsed yet?)" ]
+                    else: allmatches = cooker.status.providers.iterkeys()
+                else: allmatches = [ "(No tab completion available for this command)" ]
+            else: allmatches = [ "(No tab completion available for this command)" ]
+        else:
+            # we are in first argument
+            allmatches = cmds.iterkeys()
+
+        completer.matches = [ x for x in allmatches if x[:len(text)] == text ]
+        #print "completer.matches = '%s'" % completer.matches
+    if len( completer.matches ) > state:
+        return completer.matches[state]
+    else:
+        return None
+
+def debugOut( text ):
+    if debug:
+        sys.stderr.write( "( %s )\n" % text )
+
+def columnize( alist, width = 80 ):
+    """
+    A word-wrap function that preserves existing line breaks
+    and most spaces in the text. Expects that existing line
+    breaks are posix newlines (\n).
+    """
+    return reduce(lambda line, word, width=width: '%s%s%s' %
+                  (line,
+                   ' \n'[(len(line[line.rfind('\n')+1:])
+                         + len(word.split('\n',1)[0]
+                              ) >= width)],
+                   word),
+                  alist
+                 )
+
+def globfilter( names, pattern ):
+    return fnmatch.filter( names, pattern )
+
+##########################################################################
+# Class MemoryOutput
+##########################################################################
+
+class MemoryOutput:
+    """File-like output class buffering the output of the last 10 commands"""
+    def __init__( self, delegate ):
+        self.delegate = delegate
+        self._buffer = []
+        self.text = []
+        self._command = None
+
+    def startCommand( self, command ):
+        self._command = command
+        self.text = []
+    def endCommand( self ):
+        if self._command is not None:
+            if len( self._buffer ) == 10: del self._buffer[0]
+            self._buffer.append( ( self._command, self.text ) )
+    def removeLast( self ):
+        if self._buffer:
+            del self._buffer[ len( self._buffer ) - 1 ]
+        self.text = []
+        self._command = None
+    def lastBuffer( self ):
+        if self._buffer:
+            return self._buffer[ len( self._buffer ) -1 ][1]
+    def bufferedCommands( self ):
+        return [ cmd for cmd, output in self._buffer ]
+    def buffer( self, i ):
+        if i < len( self._buffer ):
+            return "BB>> %s\n%s" % ( self._buffer[i][0], "".join( self._buffer[i][1] ) )
+        else: return "ERROR: Invalid buffer number. Buffer needs to be in (0, %d)" % ( len( self._buffer ) - 1 )
+    def write( self, text ):
+        if self._command is not None and text != "BB>> ": self.text.append( text )
+        if self.delegate is not None: self.delegate.write( text )
+    def flush( self ):
+        return self.delegate.flush()
+    def fileno( self ):
+        return self.delegate.fileno()
+    def isatty( self ):
+        return self.delegate.isatty()
+
+##########################################################################
+# Class BitBakeShell
+##########################################################################
+
+class BitBakeShell:
+
+    def __init__( self ):
+        """Register commands and set up readline"""
+        self.commandQ = Queue.Queue()
+        self.commands = BitBakeShellCommands( self )
+        self.myout = MemoryOutput( sys.stdout )
+        self.historyfilename = os.path.expanduser( "~/.bbsh_history" )
+        self.startupfilename = os.path.expanduser( "~/.bbsh_startup" )
+
+        readline.set_completer( completer )
+        readline.set_completer_delims( " " )
+        readline.parse_and_bind("tab: complete")
+
+        try:
+            readline.read_history_file( self.historyfilename )
+        except IOError:
+            pass  # It doesn't exist yet.
+
+        print __credits__
+
+    def cleanup( self ):
+        """Write readline history and clean up resources"""
+        debugOut( "writing command history" )
+        try:
+            readline.write_history_file( self.historyfilename )
+        except:
+            print "SHELL: Unable to save command history"
+
+    def registerCommand( self, command, function, numparams = 0, usage = "", helptext = "" ):
+        """Register a command"""
+        if usage == "": usage = command
+        if helptext == "": helptext = function.__doc__ or "<not yet documented>"
+        cmds[command] = ( function, numparams, usage, helptext )
+
+    def processCommand( self, command, params ):
+        """Process a command. Check number of params and print a usage string, if appropriate"""
+        debugOut( "processing command '%s'..." % command )
+        try:
+            function, numparams, usage, helptext = cmds[command]
+        except KeyError:
+            print "SHELL: ERROR: '%s' command is not a valid command." % command
+            self.myout.removeLast()
+        else:
+            if (numparams != -1) and (not len( params ) == numparams):
+                print "Usage: '%s'" % usage
+                return
+
+            result = function( self.commands, params )
+            debugOut( "result was '%s'" % result )
+
+    def processStartupFile( self ):
+        """Read and execute all commands found in $HOME/.bbsh_startup"""
+        if os.path.exists( self.startupfilename ):
+            startupfile = open( self.startupfilename, "r" )
+            for cmdline in startupfile:
+                debugOut( "processing startup line '%s'" % cmdline )
+                if not cmdline:
+                    continue
+                if "|" in cmdline:
+                    print "ERROR: '|' in startup file is not allowed. Ignoring line"
+                    continue
+                self.commandQ.put( cmdline.strip() )
+
+    def main( self ):
+        """The main command loop"""
+        while not leave_mainloop:
+            try:
+                if self.commandQ.empty():
+                    sys.stdout = self.myout.delegate
+                    cmdline = raw_input( "BB>> " )
+                    sys.stdout = self.myout
+                else:
+                    cmdline = self.commandQ.get()
+                if cmdline:
+                    allCommands = cmdline.split( ';' )
+                    for command in allCommands:
+                        pipecmd = None
+                        #
+                        # special case for expert mode
+                        if command == 'python':
+                            sys.stdout = self.myout.delegate
+                            self.processCommand( command, "" )
+                            sys.stdout = self.myout
+                        else:
+                            self.myout.startCommand( command )
+                            if '|' in command: # disable output
+                                command, pipecmd = command.split( '|' )
+                                delegate = self.myout.delegate
+                                self.myout.delegate = None
+                            tokens = shlex.split( command, True )
+                            self.processCommand( tokens[0], tokens[1:] or "" )
+                            self.myout.endCommand()
+                            if pipecmd is not None: # restore output
+                                self.myout.delegate = delegate
+
+                                pipe = popen2.Popen4( pipecmd )
+                                pipe.tochild.write( "\n".join( self.myout.lastBuffer() ) )
+                                pipe.tochild.close()
+                                sys.stdout.write( pipe.fromchild.read() )
+                        #
+            except EOFError:
+                print
+                return
+            except KeyboardInterrupt:
+                print
+
+##########################################################################
+# Start function - called from the BitBake command line utility
+##########################################################################
+
+def start( aCooker ):
+    global cooker
+    cooker = aCooker
+    bbshell = BitBakeShell()
+    bbshell.processStartupFile()
+    bbshell.main()
+    bbshell.cleanup()
+
+if __name__ == "__main__":
+    print "SHELL: Sorry, this program should only be called by BitBake."
diff --git a/bitbake-dev/lib/bb/taskdata.py b/bitbake-dev/lib/bb/taskdata.py
new file mode 100644
index 0000000000..566614ee63
--- /dev/null
+++ b/bitbake-dev/lib/bb/taskdata.py
@@ -0,0 +1,594 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake 'TaskData' implementation
+
+Task data collection and handling
+
+"""
+
+# Copyright (C) 2006  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+from bb import data, event, mkdirhier, utils
+import bb, os
+
+class TaskData:
+    """
+    BitBake Task Data implementation
+    """
+    def __init__(self, abort = True):
+        self.build_names_index = []
+        self.run_names_index = []
+        self.fn_index = []
+
+        self.build_targets = {}
+        self.run_targets = {}
+
+        self.external_targets = []
+
+        self.tasks_fnid = []
+        self.tasks_name = []
+        self.tasks_tdepends = []
+        self.tasks_idepends = []
+        # Cache to speed up task ID lookups
+        self.tasks_lookup = {}
+
+        self.depids = {}
+        self.rdepids = {}
+
+        self.consider_msgs_cache = []
+
+        self.failed_deps = []
+        self.failed_rdeps = []
+        self.failed_fnids = []
+
+        self.abort = abort
+
+    def getbuild_id(self, name):
+        """
+        Return an ID number for the build target name.
+        If it doesn't exist, create one.
+        """
+        if not name in self.build_names_index:
+            self.build_names_index.append(name)
+            return len(self.build_names_index) - 1
+
+        return self.build_names_index.index(name)
+
+    def getrun_id(self, name):
+        """
+        Return an ID number for the run target name. 
+        If it doesn't exist, create one.
+        """
+        if not name in self.run_names_index:
+            self.run_names_index.append(name)
+            return len(self.run_names_index) - 1
+
+        return self.run_names_index.index(name)
+
+    def getfn_id(self, name):
+        """
+        Return an ID number for the filename. 
+        If it doesn't exist, create one.
+        """
+        if not name in self.fn_index:
+            self.fn_index.append(name)
+            return len(self.fn_index) - 1
+
+        return self.fn_index.index(name)
+
+    def gettask_ids(self, fnid):
+        """
+        Return an array of the ID numbers matching a given fnid.
+        """
+        ids = []
+        if fnid in self.tasks_lookup:
+            for task in self.tasks_lookup[fnid]:
+                ids.append(self.tasks_lookup[fnid][task])
+        return ids
+
+    def gettask_id(self, fn, task, create = True):
+        """
+        Return an ID number for the task matching fn and task.
+        If it doesn't exist, create one by default.
+        Optionally return None instead.
+        """
+        fnid = self.getfn_id(fn)
+
+        if fnid in self.tasks_lookup:
+            if task in self.tasks_lookup[fnid]:
+                return self.tasks_lookup[fnid][task]
+
+        if not create:
+            return None
+
+        self.tasks_name.append(task)
+        self.tasks_fnid.append(fnid)
+        self.tasks_tdepends.append([])
+        self.tasks_idepends.append([])
+
+        listid = len(self.tasks_name) - 1
+
+        if fnid not in self.tasks_lookup:
+            self.tasks_lookup[fnid] = {}
+        self.tasks_lookup[fnid][task] = listid
+
+        return listid
+
+    def add_tasks(self, fn, dataCache):
+        """
+        Add tasks for a given fn to the database
+        """
+
+        task_deps = dataCache.task_deps[fn]
+
+        fnid = self.getfn_id(fn)
+
+        if fnid in self.failed_fnids:
+            bb.msg.fatal(bb.msg.domain.TaskData, "Trying to re-add a failed file? Something is broken...")
+
+        # Check if we've already seen this fn
+        if fnid in self.tasks_fnid:
+            return
+
+        for task in task_deps['tasks']:
+
+            # Work out task dependencies
+            parentids = []
+            for dep in task_deps['parents'][task]:
+                parentid = self.gettask_id(fn, dep)
+                parentids.append(parentid)
+            taskid = self.gettask_id(fn, task)
+            self.tasks_tdepends[taskid].extend(parentids)
+
+            # Touch all intertask dependencies
+            if 'depends' in task_deps and task in task_deps['depends']:
+                ids = []
+                for dep in task_deps['depends'][task].split():
+                    if dep:
+                        ids.append(((self.getbuild_id(dep.split(":")[0])), dep.split(":")[1]))
+                self.tasks_idepends[taskid].extend(ids)
+
+        # Work out build dependencies
+        if not fnid in self.depids:
+            dependids = {}
+            for depend in dataCache.deps[fn]:
+                bb.msg.debug(2, bb.msg.domain.TaskData, "Added dependency %s for %s" % (depend, fn))
+                dependids[self.getbuild_id(depend)] = None
+            self.depids[fnid] = dependids.keys()
+
+        # Work out runtime dependencies
+        if not fnid in self.rdepids:
+            rdependids = {}
+            rdepends = dataCache.rundeps[fn]
+            rrecs = dataCache.runrecs[fn]
+            for package in rdepends:
+                for rdepend in bb.utils.explode_deps(rdepends[package]):
+                    bb.msg.debug(2, bb.msg.domain.TaskData, "Added runtime dependency %s for %s" % (rdepend, fn))
+                    rdependids[self.getrun_id(rdepend)] = None
+            for package in rrecs:
+                for rdepend in bb.utils.explode_deps(rrecs[package]):
+                    bb.msg.debug(2, bb.msg.domain.TaskData, "Added runtime recommendation %s for %s" % (rdepend, fn))
+                    rdependids[self.getrun_id(rdepend)] = None
+            self.rdepids[fnid] = rdependids.keys()
+
+        for dep in self.depids[fnid]:
+            if dep in self.failed_deps:
+                self.fail_fnid(fnid)
+                return
+        for dep in self.rdepids[fnid]:
+            if dep in self.failed_rdeps:
+                self.fail_fnid(fnid)
+                return
+
+    def have_build_target(self, target):
+        """
+        Have we a build target matching this name?
+        """
+        targetid = self.getbuild_id(target)
+
+        if targetid in self.build_targets:
+            return True
+        return False
+
+    def have_runtime_target(self, target):
+        """
+        Have we a runtime target matching this name?
+        """
+        targetid = self.getrun_id(target)
+
+        if targetid in self.run_targets:
+            return True
+        return False
+
+    def add_build_target(self, fn, item):
+        """
+        Add a build target.
+        If already present, append the provider fn to the list
+        """
+        targetid = self.getbuild_id(item)
+        fnid = self.getfn_id(fn)
+
+        if targetid in self.build_targets:
+            if fnid in self.build_targets[targetid]:
+                return
+            self.build_targets[targetid].append(fnid)
+            return
+        self.build_targets[targetid] = [fnid]
+
+    def add_runtime_target(self, fn, item):
+        """
+        Add a runtime target.
+        If already present, append the provider fn to the list
+        """
+        targetid = self.getrun_id(item)
+        fnid = self.getfn_id(fn)
+
+        if targetid in self.run_targets:
+            if fnid in self.run_targets[targetid]:
+                return
+            self.run_targets[targetid].append(fnid)
+            return
+        self.run_targets[targetid] = [fnid]
+
+    def mark_external_target(self, item):
+        """
+        Mark a build target as being externally requested
+        """
+        targetid = self.getbuild_id(item)
+
+        if targetid not in self.external_targets:
+            self.external_targets.append(targetid)
+
+    def get_unresolved_build_targets(self, dataCache):
+        """
+        Return a list of build targets who's providers 
+        are unknown.
+        """
+        unresolved = []
+        for target in self.build_names_index:
+            if target in dataCache.ignored_dependencies:
+                continue
+            if self.build_names_index.index(target) in self.failed_deps:
+                continue
+            if not self.have_build_target(target):
+                unresolved.append(target)
+        return unresolved
+
+    def get_unresolved_run_targets(self, dataCache):
+        """
+        Return a list of runtime targets who's providers 
+        are unknown.
+        """
+        unresolved = []
+        for target in self.run_names_index:
+            if target in dataCache.ignored_dependencies:
+                continue
+            if self.run_names_index.index(target) in self.failed_rdeps:
+                continue
+            if not self.have_runtime_target(target):
+                unresolved.append(target)
+        return unresolved
+
+    def get_provider(self, item):
+        """
+        Return a list of providers of item
+        """
+        targetid = self.getbuild_id(item)
+   
+        return self.build_targets[targetid]
+
+    def get_dependees(self, itemid):
+        """
+        Return a list of targets which depend on item
+        """
+        dependees = []
+        for fnid in self.depids:
+            if itemid in self.depids[fnid]:
+                dependees.append(fnid)
+        return dependees
+
+    def get_dependees_str(self, item):
+        """
+        Return a list of targets which depend on item as a user readable string
+        """
+        itemid = self.getbuild_id(item)
+        dependees = []
+        for fnid in self.depids:
+            if itemid in self.depids[fnid]:
+                dependees.append(self.fn_index[fnid])
+        return dependees
+
+    def get_rdependees(self, itemid):
+        """
+        Return a list of targets which depend on runtime item
+        """
+        dependees = []
+        for fnid in self.rdepids:
+            if itemid in self.rdepids[fnid]:
+                dependees.append(fnid)
+        return dependees
+
+    def get_rdependees_str(self, item):
+        """
+        Return a list of targets which depend on runtime item as a user readable string
+        """
+        itemid = self.getrun_id(item)
+        dependees = []
+        for fnid in self.rdepids:
+            if itemid in self.rdepids[fnid]:
+                dependees.append(self.fn_index[fnid])
+        return dependees
+
+    def add_provider(self, cfgData, dataCache, item):
+        try:
+            self.add_provider_internal(cfgData, dataCache, item)
+        except bb.providers.NoProvider:
+            if self.abort:
+                bb.msg.error(bb.msg.domain.Provider, "Nothing PROVIDES '%s' (but '%s' DEPENDS on or otherwise requires it)" % (item, self.get_dependees_str(item)))
+                raise
+            targetid = self.getbuild_id(item)
+            self.remove_buildtarget(targetid)
+
+        self.mark_external_target(item)
+
+    def add_provider_internal(self, cfgData, dataCache, item):
+        """
+        Add the providers of item to the task data
+        Mark entries were specifically added externally as against dependencies 
+        added internally during dependency resolution
+        """
+
+        if item in dataCache.ignored_dependencies:
+            return
+
+        if not item in dataCache.providers:
+            bb.msg.note(2, bb.msg.domain.Provider, "Nothing PROVIDES '%s' (but '%s' DEPENDS on or otherwise requires it)" % (item, self.get_dependees_str(item)))
+            bb.event.fire(bb.event.NoProvider(item, cfgData))
+            raise bb.providers.NoProvider(item)
+
+        if self.have_build_target(item):
+            return
+
+        all_p = dataCache.providers[item]
+
+        eligible, foundUnique = bb.providers.filterProviders(all_p, item, cfgData, dataCache)
+
+        for p in eligible:
+            fnid = self.getfn_id(p)
+            if fnid in self.failed_fnids:
+                eligible.remove(p)
+
+        if not eligible:
+            bb.msg.note(2, bb.msg.domain.Provider, "No buildable provider PROVIDES '%s' but '%s' DEPENDS on or otherwise requires it. Enable debugging and see earlier logs to find unbuildable providers." % (item, self.get_dependees_str(item)))
+            bb.event.fire(bb.event.NoProvider(item, cfgData))
+            raise bb.providers.NoProvider(item)
+
+        if len(eligible) > 1 and foundUnique == False:
+            if item not in self.consider_msgs_cache:
+                providers_list = []
+                for fn in eligible:
+                    providers_list.append(dataCache.pkg_fn[fn])
+                bb.msg.note(1, bb.msg.domain.Provider, "multiple providers are available for %s (%s);" % (item, ", ".join(providers_list)))
+                bb.msg.note(1, bb.msg.domain.Provider, "consider defining PREFERRED_PROVIDER_%s" % item)
+                bb.event.fire(bb.event.MultipleProviders(item, providers_list, cfgData))
+            self.consider_msgs_cache.append(item)
+
+        for fn in eligible:
+            fnid = self.getfn_id(fn)
+            if fnid in self.failed_fnids:
+                continue
+            bb.msg.debug(2, bb.msg.domain.Provider, "adding %s to satisfy %s" % (fn, item))
+            self.add_build_target(fn, item)
+            self.add_tasks(fn, dataCache)
+
+
+            #item = dataCache.pkg_fn[fn]
+
+    def add_rprovider(self, cfgData, dataCache, item):
+        """
+        Add the runtime providers of item to the task data
+        (takes item names from RDEPENDS/PACKAGES namespace)
+        """
+
+        if item in dataCache.ignored_dependencies:
+            return
+
+        if self.have_runtime_target(item):
+            return
+
+        all_p = bb.providers.getRuntimeProviders(dataCache, item)
+
+        if not all_p:
+            bb.msg.error(bb.msg.domain.Provider, "'%s' RDEPENDS/RRECOMMENDS or otherwise requires the runtime entity '%s' but it wasn't found in any PACKAGE or RPROVIDES variables" % (self.get_rdependees_str(item), item))
+            bb.event.fire(bb.event.NoProvider(item, cfgData, runtime=True))
+            raise bb.providers.NoRProvider(item)
+
+        eligible, numberPreferred = bb.providers.filterProvidersRunTime(all_p, item, cfgData, dataCache)
+
+        for p in eligible:
+            fnid = self.getfn_id(p)
+            if fnid in self.failed_fnids:
+                eligible.remove(p)
+
+        if not eligible:
+            bb.msg.error(bb.msg.domain.Provider, "'%s' RDEPENDS/RRECOMMENDS or otherwise requires the runtime entity '%s' but it wasn't found in any PACKAGE or RPROVIDES variables of any buildable targets.\nEnable debugging and see earlier logs to find unbuildable targets." % (self.get_rdependees_str(item), item))
+            bb.event.fire(bb.event.NoProvider(item, cfgData, runtime=True))
+            raise bb.providers.NoRProvider(item)
+
+        if len(eligible) > 1 and numberPreferred == 0:
+            if item not in self.consider_msgs_cache:
+                providers_list = []
+                for fn in eligible:
+                    providers_list.append(dataCache.pkg_fn[fn])
+                bb.msg.note(2, bb.msg.domain.Provider, "multiple providers are available for runtime %s (%s);" % (item, ", ".join(providers_list)))
+                bb.msg.note(2, bb.msg.domain.Provider, "consider defining a PREFERRED_PROVIDER entry to match runtime %s" % item)
+                bb.event.fire(bb.event.MultipleProviders(item,providers_list, cfgData, runtime=True))
+            self.consider_msgs_cache.append(item)
+
+        if numberPreferred > 1:
+            if item not in self.consider_msgs_cache:
+                providers_list = []
+                for fn in eligible:
+                    providers_list.append(dataCache.pkg_fn[fn])
+                bb.msg.note(2, bb.msg.domain.Provider, "multiple providers are available for runtime %s (top %s entries preferred) (%s);" % (item, numberPreferred, ", ".join(providers_list)))
+                bb.msg.note(2, bb.msg.domain.Provider, "consider defining only one PREFERRED_PROVIDER entry to match runtime %s" % item)
+                bb.event.fire(bb.event.MultipleProviders(item,providers_list, cfgData, runtime=True))
+            self.consider_msgs_cache.append(item)
+
+        # run through the list until we find one that we can build
+        for fn in eligible:
+            fnid = self.getfn_id(fn)
+            if fnid in self.failed_fnids:
+                continue
+            bb.msg.debug(2, bb.msg.domain.Provider, "adding '%s' to satisfy runtime '%s'" % (fn, item))
+            self.add_runtime_target(fn, item)
+            self.add_tasks(fn, dataCache)
+
+    def fail_fnid(self, fnid, missing_list = []):
+        """
+        Mark a file as failed (unbuildable)
+        Remove any references from build and runtime provider lists
+
+        missing_list, A list of missing requirements for this target
+        """
+        if fnid in self.failed_fnids:
+            return
+        bb.msg.debug(1, bb.msg.domain.Provider, "File '%s' is unbuildable, removing..." % self.fn_index[fnid])
+        self.failed_fnids.append(fnid)
+        for target in self.build_targets:
+            if fnid in self.build_targets[target]:
+                self.build_targets[target].remove(fnid)
+                if len(self.build_targets[target]) == 0:
+                    self.remove_buildtarget(target, missing_list)
+        for target in self.run_targets:
+            if fnid in self.run_targets[target]:
+                self.run_targets[target].remove(fnid)
+                if len(self.run_targets[target]) == 0:
+                    self.remove_runtarget(target, missing_list)
+
+    def remove_buildtarget(self, targetid, missing_list = []):
+        """
+        Mark a build target as failed (unbuildable)
+        Trigger removal of any files that have this as a dependency
+        """
+        if not missing_list:
+            missing_list = [self.build_names_index[targetid]]
+        else:
+            missing_list = [self.build_names_index[targetid]] + missing_list
+        bb.msg.note(2, bb.msg.domain.Provider, "Target '%s' is unbuildable, removing...\nMissing or unbuildable dependency chain was: %s" % (self.build_names_index[targetid], missing_list))
+        self.failed_deps.append(targetid)
+        dependees = self.get_dependees(targetid)
+        for fnid in dependees:
+            self.fail_fnid(fnid, missing_list)
+        for taskid in range(len(self.tasks_idepends)):
+            idepends = self.tasks_idepends[taskid]
+            for (idependid, idependtask) in idepends:
+                if idependid == targetid:
+                    self.fail_fnid(self.tasks_fnid[taskid], missing_list)
+
+        if self.abort and targetid in self.external_targets:
+            bb.msg.error(bb.msg.domain.Provider, "Required build target '%s' has no buildable providers.\nMissing or unbuildable dependency chain was: %s" % (self.build_names_index[targetid], missing_list))
+            raise bb.providers.NoProvider
+
+    def remove_runtarget(self, targetid, missing_list = []):
+        """
+        Mark a run target as failed (unbuildable)
+        Trigger removal of any files that have this as a dependency
+        """
+        if not missing_list:
+            missing_list = [self.run_names_index[targetid]]
+        else:
+            missing_list = [self.run_names_index[targetid]] + missing_list
+
+        bb.msg.note(1, bb.msg.domain.Provider, "Runtime target '%s' is unbuildable, removing...\nMissing or unbuildable dependency chain was: %s" % (self.run_names_index[targetid], missing_list))
+        self.failed_rdeps.append(targetid)
+        dependees = self.get_rdependees(targetid)
+        for fnid in dependees:
+            self.fail_fnid(fnid, missing_list)
+
+    def add_unresolved(self, cfgData, dataCache):
+        """
+        Resolve all unresolved build and runtime targets
+        """
+        bb.msg.note(1, bb.msg.domain.TaskData, "Resolving any missing task queue dependencies")
+        while 1:
+            added = 0
+            for target in self.get_unresolved_build_targets(dataCache):
+                try:
+                    self.add_provider_internal(cfgData, dataCache, target)
+                    added = added + 1
+                except bb.providers.NoProvider:
+                    targetid = self.getbuild_id(target)
+                    if self.abort and targetid in self.external_targets:
+                        bb.msg.error(bb.msg.domain.Provider, "Nothing PROVIDES '%s' (but '%s' DEPENDS on or otherwise requires it)" % (target, self.get_dependees_str(target)))
+                        raise
+                    self.remove_buildtarget(targetid)
+            for target in self.get_unresolved_run_targets(dataCache):
+                try:
+                    self.add_rprovider(cfgData, dataCache, target)
+                    added = added + 1
+                except bb.providers.NoRProvider:
+                    self.remove_runtarget(self.getrun_id(target))
+            bb.msg.debug(1, bb.msg.domain.TaskData, "Resolved " + str(added) + " extra dependecies")
+            if added == 0:
+                break
+        # self.dump_data()
+
+    def dump_data(self):
+        """
+        Dump some debug information on the internal data structures
+        """
+        bb.msg.debug(3, bb.msg.domain.TaskData, "build_names:")
+        bb.msg.debug(3, bb.msg.domain.TaskData, ", ".join(self.build_names_index))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "run_names:")
+        bb.msg.debug(3, bb.msg.domain.TaskData, ", ".join(self.run_names_index))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "build_targets:")
+        for buildid in range(len(self.build_names_index)):
+            target = self.build_names_index[buildid]
+            targets = "None"
+            if buildid in self.build_targets:
+                targets = self.build_targets[buildid]
+            bb.msg.debug(3, bb.msg.domain.TaskData, " (%s)%s: %s" % (buildid, target, targets))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "run_targets:")
+        for runid in range(len(self.run_names_index)):
+            target = self.run_names_index[runid]
+            targets = "None"
+            if runid in self.run_targets:
+                targets = self.run_targets[runid]
+            bb.msg.debug(3, bb.msg.domain.TaskData, " (%s)%s: %s" % (runid, target, targets))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "tasks:")
+        for task in range(len(self.tasks_name)):
+            bb.msg.debug(3, bb.msg.domain.TaskData, " (%s)%s - %s: %s" % (
+                task, 
+                self.fn_index[self.tasks_fnid[task]], 
+                self.tasks_name[task], 
+                self.tasks_tdepends[task]))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "dependency ids (per fn):")
+        for fnid in self.depids:
+            bb.msg.debug(3, bb.msg.domain.TaskData, " %s %s: %s" % (fnid, self.fn_index[fnid], self.depids[fnid]))
+
+        bb.msg.debug(3, bb.msg.domain.TaskData, "runtime dependency ids (per fn):")
+        for fnid in self.rdepids:
+            bb.msg.debug(3, bb.msg.domain.TaskData, " %s %s: %s" % (fnid, self.fn_index[fnid], self.rdepids[fnid]))
+
+
diff --git a/bitbake-dev/lib/bb/ui/__init__.py b/bitbake-dev/lib/bb/ui/__init__.py
new file mode 100644
index 0000000000..c6a377a8e6
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/__init__.py
@@ -0,0 +1,18 @@
+#
+# BitBake UI Implementation
+#
+# Copyright (C) 2006-2007 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
diff --git a/bitbake-dev/lib/bb/ui/depexplorer.py b/bitbake-dev/lib/bb/ui/depexplorer.py
new file mode 100644
index 0000000000..becbb5dd5d
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/depexplorer.py
@@ -0,0 +1,271 @@
+#
+# BitBake Graphical GTK based Dependency Explorer
+#
+# Copyright (C) 2007        Ross Burton
+# Copyright (C) 2007 - 2008 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import gobject
+import gtk
+import threading
+
+# Package Model
+(COL_PKG_NAME) = (0)
+
+# Dependency Model
+(TYPE_DEP, TYPE_RDEP) = (0, 1)
+(COL_DEP_TYPE, COL_DEP_PARENT, COL_DEP_PACKAGE) = (0, 1, 2)
+
+class PackageDepView(gtk.TreeView):
+    def __init__(self, model, dep_type, label):
+        gtk.TreeView.__init__(self)
+        self.current = None
+        self.dep_type = dep_type
+        self.filter_model = model.filter_new()
+        self.filter_model.set_visible_func(self._filter)
+        self.set_model(self.filter_model)
+        #self.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
+        self.append_column(gtk.TreeViewColumn(label, gtk.CellRendererText(), text=COL_DEP_PACKAGE))
+
+    def _filter(self, model, iter):
+        (this_type, package) = model.get(iter, COL_DEP_TYPE, COL_DEP_PARENT)
+        if this_type != self.dep_type: return False
+        return package == self.current
+
+    def set_current_package(self, package):
+        self.current = package
+        self.filter_model.refilter()
+
+class PackageReverseDepView(gtk.TreeView):
+    def __init__(self, model, label):
+        gtk.TreeView.__init__(self)
+        self.current = None
+        self.filter_model = model.filter_new()
+        self.filter_model.set_visible_func(self._filter)
+        self.set_model(self.filter_model)
+        self.append_column(gtk.TreeViewColumn(label, gtk.CellRendererText(), text=COL_DEP_PARENT))
+
+    def _filter(self, model, iter):
+        package = model.get_value(iter, COL_DEP_PACKAGE)
+        return package == self.current
+
+    def set_current_package(self, package):
+        self.current = package
+        self.filter_model.refilter()
+
+class DepExplorer(gtk.Window):
+    def __init__(self):
+        gtk.Window.__init__(self)
+        self.set_title("Dependency Explorer")
+        self.set_default_size(500, 500)
+        self.connect("delete-event", gtk.main_quit)
+
+        # Create the data models
+        self.pkg_model = gtk.ListStore(gobject.TYPE_STRING)
+        self.depends_model = gtk.ListStore(gobject.TYPE_INT, gobject.TYPE_STRING, gobject.TYPE_STRING)
+
+        pane = gtk.HPaned()
+        pane.set_position(250)
+        self.add(pane)
+
+        # The master list of packages
+        scrolled = gtk.ScrolledWindow()
+        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        scrolled.set_shadow_type(gtk.SHADOW_IN)
+        self.pkg_treeview = gtk.TreeView(self.pkg_model)
+        self.pkg_treeview.get_selection().connect("changed", self.on_cursor_changed)
+        self.pkg_treeview.append_column(gtk.TreeViewColumn("Package", gtk.CellRendererText(), text=COL_PKG_NAME))
+        pane.add1(scrolled)
+        scrolled.add(self.pkg_treeview)
+
+        box = gtk.VBox(homogeneous=True, spacing=4)
+
+        # Runtime Depends
+        scrolled = gtk.ScrolledWindow()
+        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        scrolled.set_shadow_type(gtk.SHADOW_IN)
+        self.rdep_treeview = PackageDepView(self.depends_model, TYPE_RDEP, "Runtime Depends")
+        self.rdep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
+        scrolled.add(self.rdep_treeview)
+        box.add(scrolled)
+
+        # Build Depends
+        scrolled = gtk.ScrolledWindow()
+        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        scrolled.set_shadow_type(gtk.SHADOW_IN)
+        self.dep_treeview = PackageDepView(self.depends_model, TYPE_DEP, "Build Depends")
+        self.dep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
+        scrolled.add(self.dep_treeview)
+        box.add(scrolled)
+        pane.add2(box)
+
+        # Reverse Depends
+        scrolled = gtk.ScrolledWindow()
+        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        scrolled.set_shadow_type(gtk.SHADOW_IN)
+        self.revdep_treeview = PackageReverseDepView(self.depends_model, "Reverse Depends")
+        self.revdep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PARENT)
+        scrolled.add(self.revdep_treeview)
+        box.add(scrolled)
+        pane.add2(box)
+
+        self.show_all()
+
+    def on_package_activated(self, treeview, path, column, data_col):
+        model = treeview.get_model()
+        package = model.get_value(model.get_iter(path), data_col)
+
+        pkg_path = []
+        def finder(model, path, iter, needle):
+            package = model.get_value(iter, COL_PKG_NAME)
+            if package == needle:
+                pkg_path.append(path)
+                return True
+            else:
+                return False
+        self.pkg_model.foreach(finder, package)
+        if pkg_path:
+            self.pkg_treeview.get_selection().select_path(pkg_path[0])
+            self.pkg_treeview.scroll_to_cell(pkg_path[0])
+
+    def on_cursor_changed(self, selection):
+        (model, it) = selection.get_selected()
+        if iter is None:
+            current_package = None
+        else:
+            current_package = model.get_value(it, COL_PKG_NAME)
+        self.rdep_treeview.set_current_package(current_package)
+        self.dep_treeview.set_current_package(current_package)
+        self.revdep_treeview.set_current_package(current_package)
+
+
+def parse(depgraph, pkg_model, depends_model):
+
+    for package in depgraph["pn"]:
+        pkg_model.set(pkg_model.append(), COL_PKG_NAME, package)
+
+    for package in depgraph["depends"]:
+        for depend in depgraph["depends"][package]:
+            depends_model.set (depends_model.append(),
+                              COL_DEP_TYPE, TYPE_DEP,
+                              COL_DEP_PARENT, package,
+                              COL_DEP_PACKAGE, depend)
+
+    for package in depgraph["rdepends-pn"]:
+        for rdepend in depgraph["rdepends-pn"][package]:
+            depends_model.set (depends_model.append(),
+                              COL_DEP_TYPE, TYPE_RDEP,
+                              COL_DEP_PARENT, package,
+                              COL_DEP_PACKAGE, rdepend)
+
+class ProgressBar(gtk.Window):
+    def __init__(self):
+
+        gtk.Window.__init__(self)
+        self.set_title("Parsing .bb files, please wait...")
+        self.set_default_size(500, 0)
+        self.connect("delete-event", gtk.main_quit)
+
+        self.progress = gtk.ProgressBar()
+        self.add(self.progress)
+        self.show_all()
+
+class gtkthread(threading.Thread):
+    quit = threading.Event()
+    def __init__(self, shutdown):
+        threading.Thread.__init__(self)
+        self.setDaemon(True)
+        self.shutdown = shutdown
+
+    def run(self):
+        gobject.threads_init()
+        gtk.gdk.threads_init()
+        gtk.main()
+        gtkthread.quit.set()
+
+def init(server, eventHandler):
+
+    try:
+        cmdline = server.runCommand(["getCmdLineAction"])
+        if not cmdline or cmdline[0] != "generateDotGraph":
+            print "This UI is only compatible with the -g option"
+            return
+        ret = server.runCommand(["generateDepTreeEvent", cmdline[1]])
+        if ret != True:
+            print "Couldn't run command! %s" % ret
+            return
+    except xmlrpclib.Fault, x:
+        print "XMLRPC Fault getting commandline:\n %s" % x
+        return
+
+    shutdown = 0
+
+    gtkgui = gtkthread(shutdown)
+    gtkgui.start()
+
+    gtk.gdk.threads_enter()
+    pbar = ProgressBar()
+    dep = DepExplorer()
+    gtk.gdk.threads_leave()
+
+    while True:
+        try:
+            event = eventHandler.waitEvent(0.25)
+            if gtkthread.quit.isSet():
+                break
+
+            if event is None:
+                continue
+            if event[0].startswith('bb.event.ParseProgress'):
+                x = event[1]['sofar']
+                y = event[1]['total']
+                if x == y:
+                    print("\nParsing finished. %d cached, %d parsed, %d skipped, %d masked, %d errors." 
+                        % ( event[1]['cached'], event[1]['parsed'], event[1]['skipped'], event[1]['masked'], event[1]['errors']))
+                    pbar.hide()
+                gtk.gdk.threads_enter()
+                pbar.progress.set_fraction(float(x)/float(y))
+                pbar.progress.set_text("%d/%d (%2d %%)" % (x, y, x*100/y))
+                gtk.gdk.threads_leave()
+                continue
+
+            if event[0] == "bb.event.DepTreeGenerated":
+                gtk.gdk.threads_enter()
+                parse(event[1]['_depgraph'], dep.pkg_model, dep.depends_model)
+                gtk.gdk.threads_leave()
+
+            if event[0] == 'bb.command.CookerCommandCompleted':
+                continue
+            if event[0] == 'bb.command.CookerCommandFailed':
+                print "Command execution failed: %s" % event[1]['error']
+                break
+            if event[0] == 'bb.cooker.CookerExit':
+                break
+
+            continue
+
+        except KeyboardInterrupt:
+            if shutdown == 2:
+                print "\nThird Keyboard Interrupt, exit.\n"
+                break
+            if shutdown == 1:
+                print "\nSecond Keyboard Interrupt, stopping...\n"
+                server.runCommand(["stateStop"])
+            if shutdown == 0:
+                print "\nKeyboard Interrupt, closing down...\n"
+                server.runCommand(["stateShutdown"])
+            shutdown = shutdown + 1
+            pass
+
diff --git a/bitbake-dev/lib/bb/ui/knotty.py b/bitbake-dev/lib/bb/ui/knotty.py
new file mode 100644
index 0000000000..9e89660307
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/knotty.py
@@ -0,0 +1,157 @@
+#
+# BitBake (No)TTY UI Implementation
+#
+# Handling output to TTYs or files (no TTY)
+#
+# Copyright (C) 2006-2007 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os
+import bb
+from bb import cooker
+
+import sys
+import time
+import itertools
+import xmlrpclib
+
+parsespin = itertools.cycle( r'|/-\\' )
+
+def init(server, eventHandler):
+
+    # Get values of variables which control our output
+    includelogs = server.runCommand(["readVariable", "BBINCLUDELOGS"])
+    loglines = server.runCommand(["readVariable", "BBINCLUDELOGS_LINES"])
+
+    try:
+        cmdline = server.runCommand(["getCmdLineAction"])
+        #print cmdline
+        if not cmdline:
+            return 1
+        ret = server.runCommand(cmdline)
+        if ret != True:
+            print "Couldn't get default commandline! %s" % ret
+            return 1
+    except xmlrpclib.Fault, x:
+        print "XMLRPC Fault getting commandline:\n %s" % x
+        return 1
+
+    shutdown = 0
+    return_value = 0
+    while True:
+        try:
+            event = eventHandler.waitEvent(0.25)
+            if event is None:
+                continue
+            #print event
+            if event[0].startswith('bb.event.Pkg'):
+                print "NOTE: %s" % event[1]['_message']
+                continue
+            if event[0].startswith('bb.msg.MsgPlain'):
+                print event[1]['_message']
+                continue
+            if event[0].startswith('bb.msg.MsgDebug'):
+                print 'DEBUG: ' + event[1]['_message']
+                continue
+            if event[0].startswith('bb.msg.MsgNote'):
+                print 'NOTE: ' + event[1]['_message']
+                continue
+            if event[0].startswith('bb.msg.MsgWarn'):
+                print 'WARNING: ' + event[1]['_message']
+                continue
+            if event[0].startswith('bb.msg.MsgError'):
+                return_value = 1
+                print 'ERROR: ' + event[1]['_message']
+                continue
+            if event[0].startswith('bb.build.TaskFailed'):
+                return_value = 1
+                logfile = event[1]['logfile']
+                if logfile:
+                    print "ERROR: Logfile of failure stored in %s." % logfile
+                    if includelogs:
+                        print "Log data follows:"
+                        f = open(logfile, "r")
+                        lines = []
+                        while True:
+                            l = f.readline()
+                            if l == '':
+                                break
+                            l = l.rstrip()
+                            if loglines:
+                                lines.append(' | %s' % l)
+                                if len(lines) > int(loglines):
+                                    lines.pop(0)
+                            else:
+                                print '| %s' % l
+                        f.close()
+                        if lines:
+                            for line in lines:
+                                print line
+            if event[0].startswith('bb.build.Task'):
+                print "NOTE: %s" % event[1]['_message']
+                continue
+            if event[0].startswith('bb.event.ParseProgress'):
+                x = event[1]['sofar']
+                y = event[1]['total']
+                if os.isatty(sys.stdout.fileno()):
+                    sys.stdout.write("\rNOTE: Handling BitBake files: %s (%04d/%04d) [%2d %%]" % ( parsespin.next(), x, y, x*100/y ) )
+                    sys.stdout.flush()
+                else:
+                    if x == 1:
+                        sys.stdout.write("Parsing .bb files, please wait...")
+                        sys.stdout.flush()
+                    if x == y:
+                        sys.stdout.write("done.")
+                        sys.stdout.flush()
+                if x == y:
+                    print("\nParsing finished. %d cached, %d parsed, %d skipped, %d masked, %d errors." 
+                        % ( event[1]['cached'], event[1]['parsed'], event[1]['skipped'], event[1]['masked'], event[1]['errors']))
+                continue
+
+            if event[0] == 'bb.command.CookerCommandCompleted':
+                break
+            if event[0] == 'bb.command.CookerCommandFailed':
+                return_value = 1
+                print "Command execution failed: %s" % event[1]['error']
+                break
+            if event[0] == 'bb.cooker.CookerExit':
+                break
+
+            # ignore
+            if event[0].startswith('bb.event.BuildStarted'):
+                continue
+            if event[0].startswith('bb.event.BuildCompleted'):
+                continue
+            if event[0].startswith('bb.event.MultipleProviders'):
+                continue
+            if event[0].startswith('bb.runqueue.runQueue'):
+                continue
+            if event[0].startswith('bb.event.StampUpdate'):
+                continue
+            print "Unknown Event: %s" % event
+
+        except KeyboardInterrupt:
+            if shutdown == 2:
+                print "\nThird Keyboard Interrupt, exit.\n"
+                break
+            if shutdown == 1:
+                print "\nSecond Keyboard Interrupt, stopping...\n"
+                server.runCommand(["stateStop"])
+            if shutdown == 0:
+                print "\nKeyboard Interrupt, closing down...\n"
+                server.runCommand(["stateShutdown"])
+            shutdown = shutdown + 1
+            pass
+    return return_value
diff --git a/bitbake-dev/lib/bb/ui/ncurses.py b/bitbake-dev/lib/bb/ui/ncurses.py
new file mode 100644
index 0000000000..1476baa61f
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/ncurses.py
@@ -0,0 +1,333 @@
+#
+# BitBake Curses UI Implementation
+#
+# Implements an ncurses frontend for the BitBake utility.
+#
+# Copyright (C) 2006 Michael 'Mickey' Lauer
+# Copyright (C) 2006-2007 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+    We have the following windows:
+
+        1.) Main Window: Shows what we are ultimately building and how far we are. Includes status bar
+        2.) Thread Activity Window: Shows one status line for every concurrent bitbake thread.
+        3.) Command Line Window: Contains an interactive command line where you can interact w/ Bitbake.
+
+    Basic window layout is like that:
+
+        |---------------------------------------------------------|
+        | <Main Window>               | <Thread Activity Window>  |
+        |                             | 0: foo do_compile complete|
+        | Building Gtk+-2.6.10        | 1: bar do_patch complete  |
+        | Status: 60%                 | ...                       |
+        |                             | ...                       |
+        |                             | ...                       |
+        |---------------------------------------------------------|
+        |<Command Line Window>                                    |
+        |>>> which virtual/kernel                                 |
+        |openzaurus-kernel                                        |
+        |>>> _                                                    |
+        |---------------------------------------------------------|
+
+"""
+
+import os, sys, curses, time, random, threading, itertools, time
+from curses.textpad import Textbox
+import bb
+from bb import ui
+from bb.ui import uihelper
+
+parsespin = itertools.cycle( r'|/-\\' )
+
+X = 0
+Y = 1
+WIDTH = 2
+HEIGHT = 3
+
+MAXSTATUSLENGTH = 32
+
+class NCursesUI:
+    """
+    NCurses UI Class
+    """
+    class Window:
+        """Base Window Class"""
+        def __init__( self, x, y, width, height, fg=curses.COLOR_BLACK, bg=curses.COLOR_WHITE ):
+            self.win = curses.newwin( height, width, y, x )
+            self.dimensions = ( x, y, width, height )
+            """
+            if curses.has_colors():
+                color = 1
+                curses.init_pair( color, fg, bg )
+                self.win.bkgdset( ord(' '), curses.color_pair(color) )
+            else:
+                self.win.bkgdset( ord(' '), curses.A_BOLD )
+            """
+            self.erase()
+            self.setScrolling()
+            self.win.noutrefresh()
+
+        def erase( self ):
+            self.win.erase()
+
+        def setScrolling( self, b = True ):
+            self.win.scrollok( b )
+            self.win.idlok( b )
+
+        def setBoxed( self ):
+            self.boxed = True
+            self.win.box()
+            self.win.noutrefresh()
+
+        def setText( self, x, y, text, *args ):
+            self.win.addstr( y, x, text, *args )
+            self.win.noutrefresh()
+
+        def appendText( self, text, *args ):
+            self.win.addstr( text, *args )
+            self.win.noutrefresh()
+
+        def drawHline( self, y ):
+            self.win.hline( y, 0, curses.ACS_HLINE, self.dimensions[WIDTH] )
+            self.win.noutrefresh()
+
+    class DecoratedWindow( Window ):
+        """Base class for windows with a box and a title bar"""
+        def __init__( self, title, x, y, width, height, fg=curses.COLOR_BLACK, bg=curses.COLOR_WHITE ):
+            NCursesUI.Window.__init__( self, x+1, y+3, width-2, height-4, fg, bg )
+            self.decoration = NCursesUI.Window( x, y, width, height, fg, bg )
+            self.decoration.setBoxed()
+            self.decoration.win.hline( 2, 1, curses.ACS_HLINE, width-2 )
+            self.setTitle( title )
+
+        def setTitle( self, title ):
+            self.decoration.setText( 1, 1, title.center( self.dimensions[WIDTH]-2 ), curses.A_BOLD )
+
+    #-------------------------------------------------------------------------#
+#    class TitleWindow( Window ):
+    #-------------------------------------------------------------------------#
+#        """Title Window"""
+#        def __init__( self, x, y, width, height ):
+#            NCursesUI.Window.__init__( self, x, y, width, height )
+#            version = bb.__version__
+#            title = "BitBake %s" % version
+#            credit = "(C) 2003-2007 Team BitBake"
+#            #self.win.hline( 2, 1, curses.ACS_HLINE, width-2 )
+#            self.win.border()
+#            self.setText( 1, 1, title.center( self.dimensions[WIDTH]-2 ), curses.A_BOLD )
+#            self.setText( 1, 2, credit.center( self.dimensions[WIDTH]-2 ), curses.A_BOLD )
+
+    #-------------------------------------------------------------------------#
+    class ThreadActivityWindow( DecoratedWindow ):
+    #-------------------------------------------------------------------------#
+        """Thread Activity Window"""
+        def __init__( self, x, y, width, height ):
+            NCursesUI.DecoratedWindow.__init__( self, "Thread Activity", x, y, width, height )
+    
+        def setStatus( self, thread, text ):
+            line = "%02d: %s" % ( thread, text )
+            width = self.dimensions[WIDTH]
+            if ( len(line) > width ):
+                line = line[:width-3] + "..."
+            else:
+                line = line.ljust( width )
+            self.setText( 0, thread, line )
+
+    #-------------------------------------------------------------------------#
+    class MainWindow( DecoratedWindow ):
+    #-------------------------------------------------------------------------#
+        """Main Window"""
+        def __init__( self, x, y, width, height ):
+            self.StatusPosition = width - MAXSTATUSLENGTH
+            NCursesUI.DecoratedWindow.__init__( self, None, x, y, width, height )
+            curses.nl()
+
+        def setTitle( self, title ):
+            title = "BitBake %s" % bb.__version__
+            self.decoration.setText( 2, 1, title, curses.A_BOLD )
+            self.decoration.setText( self.StatusPosition - 8, 1, "Status:", curses.A_BOLD )
+
+        def setStatus(self, status):
+            while len(status) < MAXSTATUSLENGTH:
+                status = status + " "
+            self.decoration.setText( self.StatusPosition, 1, status, curses.A_BOLD )
+
+
+    #-------------------------------------------------------------------------#
+    class ShellOutputWindow( DecoratedWindow ):
+    #-------------------------------------------------------------------------#
+        """Interactive Command Line Output"""
+        def __init__( self, x, y, width, height ):
+            NCursesUI.DecoratedWindow.__init__( self, "Command Line Window", x, y, width, height )
+
+    #-------------------------------------------------------------------------#
+    class ShellInputWindow( Window ):
+    #-------------------------------------------------------------------------#
+        """Interactive Command Line Input"""
+        def __init__( self, x, y, width, height ):
+            NCursesUI.Window.__init__( self, x, y, width, height )
+
+#            self.textbox = Textbox( self.win )
+#            t = threading.Thread()
+#            t.run = self.textbox.edit
+#            t.start()
+
+    #-------------------------------------------------------------------------#
+    def main(self, stdscr, server, eventHandler):
+    #-------------------------------------------------------------------------#
+        height, width = stdscr.getmaxyx()
+
+        # for now split it like that:
+        # MAIN_y + THREAD_y = 2/3 screen at the top
+        # MAIN_x = 2/3 left, THREAD_y = 1/3 right
+        # CLI_y = 1/3 of screen at the bottom
+        # CLI_x = full
+
+        main_left = 0
+        main_top = 0
+        main_height = ( height / 3 * 2 )
+        main_width = ( width / 3 ) * 2
+        clo_left = main_left
+        clo_top = main_top + main_height
+        clo_height = height - main_height - main_top - 1
+        clo_width = width
+        cli_left = main_left
+        cli_top = clo_top + clo_height
+        cli_height = 1
+        cli_width = width
+        thread_left = main_left + main_width
+        thread_top = main_top
+        thread_height = main_height
+        thread_width = width - main_width
+
+        #tw = self.TitleWindow( 0, 0, width, main_top )
+        mw = self.MainWindow( main_left, main_top, main_width, main_height )
+        taw = self.ThreadActivityWindow( thread_left, thread_top, thread_width, thread_height )
+        clo = self.ShellOutputWindow( clo_left, clo_top, clo_width, clo_height )
+        cli = self.ShellInputWindow( cli_left, cli_top, cli_width, cli_height )
+        cli.setText( 0, 0, "BB>" )
+
+        mw.setStatus("Idle")
+
+        helper = uihelper.BBUIHelper()
+        shutdown = 0
+   
+        try:
+            cmdline = server.runCommand(["getCmdLineAction"])
+            if not cmdline:
+                return
+            ret = server.runCommand(cmdline)
+            if ret != True:
+                print "Couldn't get default commandlind! %s" % ret
+                return
+        except xmlrpclib.Fault, x:
+            print "XMLRPC Fault getting commandline:\n %s" % x
+            return
+
+        exitflag = False
+        while not exitflag:
+            try:
+                event = eventHandler.waitEvent(0.25)
+                if not event:
+                    continue
+                helper.eventHandler(event)
+                #mw.appendText("%s\n" % event[0])
+                if event[0].startswith('bb.event.Pkg'):
+                    mw.appendText("NOTE: %s\n" % event[1]['_message'])
+                if event[0].startswith('bb.build.Task'):
+                    mw.appendText("NOTE: %s\n" % event[1]['_message'])
+                if event[0].startswith('bb.msg.MsgDebug'):
+                    mw.appendText('DEBUG: ' + event[1]['_message'] + '\n')
+                if event[0].startswith('bb.msg.MsgNote'):
+                    mw.appendText('NOTE: ' + event[1]['_message'] + '\n')
+                if event[0].startswith('bb.msg.MsgWarn'):
+                    mw.appendText('WARNING: ' + event[1]['_message'] + '\n')
+                if event[0].startswith('bb.msg.MsgError'):
+                    mw.appendText('ERROR: ' + event[1]['_message'] + '\n')
+                if event[0].startswith('bb.msg.MsgFatal'):
+                    mw.appendText('FATAL: ' + event[1]['_message'] + '\n')
+                if event[0].startswith('bb.event.ParseProgress'):
+                    x = event[1]['sofar']
+                    y = event[1]['total']
+                    if x == y:
+                        mw.setStatus("Idle")
+                        mw.appendText("Parsing finished. %d cached, %d parsed, %d skipped, %d masked." 
+                                % ( event[1]['cached'], event[1]['parsed'], event[1]['skipped'], event[1]['masked'] ))
+                    else:
+                        mw.setStatus("Parsing: %s (%04d/%04d) [%2d %%]" % ( parsespin.next(), x, y, x*100/y ) )
+#                if event[0].startswith('bb.build.TaskFailed'):
+#                    if event[1]['logfile']:
+#                        if data.getVar("BBINCLUDELOGS", d):
+#                            bb.msg.error(bb.msg.domain.Build, "log data follows (%s)" % logfile)
+#                            number_of_lines = data.getVar("BBINCLUDELOGS_LINES", d)
+#                            if number_of_lines:
+#                                os.system('tail -n%s %s' % (number_of_lines, logfile))
+#                            else:
+#                                f = open(logfile, "r")
+#                                while True:
+#                                    l = f.readline()
+#                                    if l == '':
+#                                        break
+#                                    l = l.rstrip()
+#                                    print '| %s' % l
+#                                f.close()
+#                        else:
+#                            bb.msg.error(bb.msg.domain.Build, "see log in %s" % logfile)
+
+                if event[0] == 'bb.command.CookerCommandCompleted':
+                    exitflag = True
+                if event[0] == 'bb.command.CookerCommandFailed':
+                    mw.appendText("Command execution failed: %s" % event[1]['error'])
+                    time.sleep(2)
+                    exitflag = True
+                if event[0] == 'bb.cooker.CookerExit':
+                    exitflag = True
+
+                if helper.needUpdate:
+                    activetasks, failedtasks = helper.getTasks()
+                    taw.erase()
+                    taw.setText(0, 0, "")
+                    if activetasks:
+                        taw.appendText("Active Tasks:\n")
+                        for task in activetasks:
+                            taw.appendText(task)
+                    if failedtasks:
+                        taw.appendText("Failed Tasks:\n")
+                        for task in failedtasks:
+                            taw.appendText(task)
+
+                curses.doupdate()
+            except KeyboardInterrupt:
+                if shutdown == 2:
+                    mw.appendText("Third Keyboard Interrupt, exit.\n")
+                    exitflag = True
+                if shutdown == 1:
+                    mw.appendText("Second Keyboard Interrupt, stopping...\n")
+                    server.runCommand(["stateStop"])
+                if shutdown == 0:
+                    mw.appendText("Keyboard Interrupt, closing down...\n")
+                    server.runCommand(["stateShutdown"])
+                shutdown = shutdown + 1
+                pass
+
+def init(server, eventHandler):
+    ui = NCursesUI()
+    try:
+        curses.wrapper(ui.main, server, eventHandler)
+    except:
+        import traceback
+        traceback.print_exc()
+
diff --git a/bitbake-dev/lib/bb/ui/uievent.py b/bitbake-dev/lib/bb/ui/uievent.py
new file mode 100644
index 0000000000..9d724d7fc5
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/uievent.py
@@ -0,0 +1,127 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
+# Copyright (C) 2006 - 2007  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+"""
+Use this class to fork off a thread to recieve event callbacks from the bitbake 
+server and queue them for the UI to process. This process must be used to avoid
+client/server deadlocks.
+"""
+
+import sys, socket, threading
+from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
+
+class BBUIEventQueue:
+    def __init__(self, BBServer):
+
+        self.eventQueue = []
+        self.eventQueueLock = threading.Lock()
+        self.eventQueueNotify = threading.Event()
+
+        self.BBServer = BBServer
+
+        self.t = threading.Thread()
+        self.t.setDaemon(True)

+        self.t.run = self.startCallbackHandler

+        self.t.start()
+
+    def getEvent(self):
+
+        self.eventQueueLock.acquire()
+
+        if len(self.eventQueue) == 0:
+            self.eventQueueLock.release()
+            return None
+
+        item = self.eventQueue.pop(0)
+
+        if len(self.eventQueue) == 0:
+            self.eventQueueNotify.clear()
+
+        self.eventQueueLock.release()
+
+        return item
+
+    def waitEvent(self, delay):
+        self.eventQueueNotify.wait(delay)
+        return self.getEvent()
+
+    def queue_event(self, event):
+
+        self.eventQueueLock.acquire()
+        self.eventQueue.append(event)
+        self.eventQueueNotify.set()
+        self.eventQueueLock.release()
+
+    def startCallbackHandler(self):
+
+        server = UIXMLRPCServer()
+        self.host, self.port = server.socket.getsockname()

+
+        server.register_function( self.system_quit, "event.quit" )
+        server.register_function( self.queue_event, "event.send" )
+        server.socket.settimeout(1)
+
+        self.EventHandle = self.BBServer.registerEventHandler(self.host, self.port)
+
+        self.server = server
+        while not server.quit:
+            server.handle_request()
+        server.server_close()
+
+    def system_quit( self ):

+        """
+        Shut down the callback thread
+        """
+        try:
+            self.BBServer.unregisterEventHandler(self.EventHandle)
+        except:
+            pass
+        self.server.quit = True
+
+class UIXMLRPCServer (SimpleXMLRPCServer):
+
+    def __init__( self, interface = ("localhost", 0) ):

+        self.quit = False
+        SimpleXMLRPCServer.__init__( self,

+                                    interface,

+                                    requestHandler=SimpleXMLRPCRequestHandler,

+                                    logRequests=False, allow_none=True)
+
+    def get_request(self):
+        while not self.quit:
+            try:
+                sock, addr = self.socket.accept()
+                sock.settimeout(1)
+                return (sock, addr)
+            except socket.timeout:
+                pass
+        return (None,None)
+
+    def close_request(self, request):
+        if request is None:
+            return
+        SimpleXMLRPCServer.close_request(self, request)
+        
+    def process_request(self, request, client_address):
+        if request is None:
+            return
+        SimpleXMLRPCServer.process_request(self, request, client_address)
+

+
diff --git a/bitbake-dev/lib/bb/ui/uihelper.py b/bitbake-dev/lib/bb/ui/uihelper.py
new file mode 100644
index 0000000000..246844c9d2
--- /dev/null
+++ b/bitbake-dev/lib/bb/ui/uihelper.py
@@ -0,0 +1,49 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
+# Copyright (C) 2006 - 2007  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+class BBUIHelper:
+    def __init__(self):
+        self.needUpdate = False
+        self.running_tasks = {}
+        self.failed_tasks = {}
+
+    def eventHandler(self, event):
+        if event[0].startswith('bb.build.TaskStarted'):
+            self.running_tasks["%s %s\n" % (event[1]['_package'], event[1]['_task'])] = ""
+            self.needUpdate = True
+        if event[0].startswith('bb.build.TaskSucceeded'):
+            del self.running_tasks["%s %s\n" % (event[1]['_package'], event[1]['_task'])]
+            self.needUpdate = True
+        if event[0].startswith('bb.build.TaskFailed'):
+            del self.running_tasks["%s %s\n" % (event[1]['_package'], event[1]['_task'])]
+            self.failed_tasks["%s %s\n" % (event[1]['_package'], event[1]['_task'])] = ""
+            self.needUpdate = True
+
+        # Add runqueue event handling
+        #if event[0].startswith('bb.runqueue.runQueueTaskCompleted'):
+        #    a = 1
+        #if event[0].startswith('bb.runqueue.runQueueTaskStarted'):
+        #    a = 1
+        #if event[0].startswith('bb.runqueue.runQueueTaskFailed'):
+        #    a = 1
+        #if event[0].startswith('bb.runqueue.runQueueExitWait'):
+        #    a = 1
+
+    def getTasks(self):
+        return (self.running_tasks, self.failed_tasks)
diff --git a/bitbake-dev/lib/bb/utils.py b/bitbake-dev/lib/bb/utils.py
new file mode 100644
index 0000000000..17e22e389e
--- /dev/null
+++ b/bitbake-dev/lib/bb/utils.py
@@ -0,0 +1,270 @@
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake Utility Functions
+"""
+
+# Copyright (C) 2004 Michael Lauer
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+digits = "0123456789"
+ascii_letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+import re, fcntl, os
+
+def explode_version(s):
+    r = []
+    alpha_regexp = re.compile('^([a-zA-Z]+)(.*)$')
+    numeric_regexp = re.compile('^(\d+)(.*)$')
+    while (s != ''):
+        if s[0] in digits:
+            m = numeric_regexp.match(s)
+            r.append(int(m.group(1)))
+            s = m.group(2)
+            continue
+        if s[0] in ascii_letters:
+            m = alpha_regexp.match(s)
+            r.append(m.group(1))
+            s = m.group(2)
+            continue
+        s = s[1:]
+    return r
+
+def vercmp_part(a, b):
+    va = explode_version(a)
+    vb = explode_version(b)
+    while True:
+        if va == []:
+            ca = None
+        else:
+            ca = va.pop(0)
+        if vb == []:
+            cb = None
+        else:
+            cb = vb.pop(0)
+        if ca == None and cb == None:
+            return 0
+        if ca > cb:
+            return 1
+        if ca < cb:
+            return -1
+
+def vercmp(ta, tb):
+    (ea, va, ra) = ta
+    (eb, vb, rb) = tb
+
+    r = int(ea)-int(eb)
+    if (r == 0):
+        r = vercmp_part(va, vb)
+    if (r == 0):
+        r = vercmp_part(ra, rb)
+    return r
+
+def explode_deps(s):
+    """
+    Take an RDEPENDS style string of format:
+    "DEPEND1 (optional version) DEPEND2 (optional version) ..."
+    and return a list of dependencies.
+    Version information is ignored.
+    """
+    r = []
+    l = s.split()
+    flag = False
+    for i in l:
+        if i[0] == '(':
+            flag = True
+            #j = []
+        if not flag:
+            r.append(i)
+        #else:
+        #    j.append(i)
+        if flag and i.endswith(')'):
+            flag = False
+            # Ignore version
+            #r[-1] += ' ' + ' '.join(j)
+    return r
+
+
+
+def _print_trace(body, line):
+    """
+    Print the Environment of a Text Body
+    """
+    import bb
+
+    # print the environment of the method
+    bb.msg.error(bb.msg.domain.Util, "Printing the environment of the function")
+    min_line = max(1,line-4)
+    max_line = min(line+4,len(body)-1)
+    for i in range(min_line,max_line+1):
+        bb.msg.error(bb.msg.domain.Util, "\t%.4d:%s" % (i, body[i-1]) )
+
+
+def better_compile(text, file, realfile):
+    """
+    A better compile method. This method
+    will print  the offending lines.
+    """
+    try:
+        return compile(text, file, "exec")
+    except Exception, e:
+        import bb,sys
+
+        # split the text into lines again
+        body = text.split('\n')
+        bb.msg.error(bb.msg.domain.Util, "Error in compiling python function in: ", realfile)
+        bb.msg.error(bb.msg.domain.Util, "The lines resulting into this error were:")
+        bb.msg.error(bb.msg.domain.Util, "\t%d:%s:'%s'" % (e.lineno, e.__class__.__name__, body[e.lineno-1]))
+
+        _print_trace(body, e.lineno)
+
+        # exit now
+        sys.exit(1)
+
+def better_exec(code, context, text, realfile):
+    """
+    Similiar to better_compile, better_exec will
+    print the lines that are responsible for the
+    error.
+    """
+    import bb,sys
+    try:
+        exec code in context
+    except:
+        (t,value,tb) = sys.exc_info()
+
+        if t in [bb.parse.SkipPackage, bb.build.FuncFailed]:
+            raise
+
+        # print the Header of the Error Message
+        bb.msg.error(bb.msg.domain.Util, "Error in executing python function in: ", realfile)
+        bb.msg.error(bb.msg.domain.Util, "Exception:%s Message:%s" % (t,value) )
+
+        # let us find the line number now
+        while tb.tb_next:
+            tb = tb.tb_next
+
+        import traceback
+        line = traceback.tb_lineno(tb)
+
+        _print_trace( text.split('\n'), line )
+        
+        raise
+
+def Enum(*names):
+   """
+   A simple class to give Enum support
+   """
+
+   assert names, "Empty enums are not supported"
+
+   class EnumClass(object):
+      __slots__ = names
+      def __iter__(self):        return iter(constants)
+      def __len__(self):         return len(constants)
+      def __getitem__(self, i):  return constants[i]
+      def __repr__(self):        return 'Enum' + str(names)
+      def __str__(self):         return 'enum ' + str(constants)
+
+   class EnumValue(object):
+      __slots__ = ('__value')
+      def __init__(self, value): self.__value = value
+      Value = property(lambda self: self.__value)
+      EnumType = property(lambda self: EnumType)
+      def __hash__(self):        return hash(self.__value)
+      def __cmp__(self, other):
+         # C fans might want to remove the following assertion
+         # to make all enums comparable by ordinal value {;))
+         assert self.EnumType is other.EnumType, "Only values from the same enum are comparable"
+         return cmp(self.__value, other.__value)
+      def __invert__(self):      return constants[maximum - self.__value]
+      def __nonzero__(self):     return bool(self.__value)
+      def __repr__(self):        return str(names[self.__value])
+
+   maximum = len(names) - 1
+   constants = [None] * len(names)
+   for i, each in enumerate(names):
+      val = EnumValue(i)
+      setattr(EnumClass, each, val)
+      constants[i] = val
+   constants = tuple(constants)
+   EnumType = EnumClass()
+   return EnumType
+
+def lockfile(name):
+    """
+    Use the file fn as a lock file, return when the lock has been acquired.
+    Returns a variable to pass to unlockfile().
+    """
+    while True:
+        # If we leave the lockfiles lying around there is no problem
+        # but we should clean up after ourselves. This gives potential
+        # for races though. To work around this, when we acquire the lock 
+        # we check the file we locked was still the lock file on disk. 
+        # by comparing inode numbers. If they don't match or the lockfile 
+        # no longer exists, we start again.
+
+        # This implementation is unfair since the last person to request the 
+        # lock is the most likely to win it.
+
+        lf = open(name, "a+")
+        fcntl.flock(lf.fileno(), fcntl.LOCK_EX)
+        statinfo = os.fstat(lf.fileno())
+        if os.path.exists(lf.name):
+           statinfo2 = os.stat(lf.name)
+           if statinfo.st_ino == statinfo2.st_ino:
+               return lf
+        # File no longer exists or changed, retry
+        lf.close
+
+def unlockfile(lf):
+    """
+    Unlock a file locked using lockfile()                               
+    """
+    os.unlink(lf.name)
+    fcntl.flock(lf.fileno(), fcntl.LOCK_UN)
+    lf.close
+
+def md5_file(filename):
+    """
+    Return the hex string representation of the MD5 checksum of filename.
+    """
+    try:
+        import hashlib
+        m = hashlib.md5()
+    except ImportError:
+        import md5
+        m = md5.new()
+    
+    for line in open(filename):
+        m.update(line)
+    return m.hexdigest()
+
+def sha256_file(filename):
+    """
+    Return the hex string representation of the 256-bit SHA checksum of
+    filename.  On Python 2.4 this will return None, so callers will need to
+    handle that by either skipping SHA checks, or running a standalone sha256sum
+    binary.
+    """
+    try:
+        import hashlib
+    except ImportError:
+        return None
+
+    s = hashlib.sha256()
+    for line in open(filename):
+        s.update(line)
+    return s.hexdigest()
diff --git a/bitbake-dev/lib/bb/xmlrpcserver.py b/bitbake-dev/lib/bb/xmlrpcserver.py
new file mode 100644
index 0000000000..075eda0573
--- /dev/null
+++ b/bitbake-dev/lib/bb/xmlrpcserver.py
@@ -0,0 +1,157 @@
+#
+# BitBake XMLRPC Server
+#
+# Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
+# Copyright (C) 2006 - 2008  Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+    This module implements an xmlrpc server for BitBake.
+
+    Use this by deriving a class from BitBakeXMLRPCServer and then adding
+    methods which you want to "export" via XMLRPC. If the methods have the
+    prefix xmlrpc_, then registering those function will happen automatically,
+    if not, you need to call register_function.
+
+    Use register_idle_function() to add a function which the xmlrpc server
+    calls from within server_forever when no requests are pending. Make sure
+    that those functions are non-blocking or else you will introduce latency
+    in the server's main loop.
+"""
+
+import bb
+import xmlrpclib
+
+DEBUG = False
+
+from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
+import os, sys, inspect, select
+
+class BitBakeServerCommands():
+    def __init__(self, server, cooker):
+        self.cooker = cooker
+        self.server = server
+
+    def registerEventHandler(self, host, port):
+        """
+        Register a remote UI Event Handler
+        """
+        s = xmlrpclib.Server("http://%s:%d" % (host, port), allow_none=True)
+        return bb.event.register_UIHhandler(s)
+
+    def unregisterEventHandler(self, handlerNum):
+        """
+        Unregister a remote UI Event Handler
+        """
+        return bb.event.unregister_UIHhandler(handlerNum)
+
+    def runCommand(self, command):
+        """
+        Run a cooker command on the server
+        """
+        return self.cooker.command.runCommand(command)
+
+    def terminateServer(self):
+        """
+        Trigger the server to quit
+        """
+        self.server.quit = True
+        print "Server (cooker) exitting"
+        return
+
+    def ping(self):
+        """
+        Dummy method which can be used to check the server is still alive
+        """
+        return True
+
+class BitBakeXMLRPCServer(SimpleXMLRPCServer):
+    # remove this when you're done with debugging
+    # allow_reuse_address = True
+
+    def __init__(self, cooker, interface = ("localhost", 0)):
+        """
+        Constructor
+        """
+        SimpleXMLRPCServer.__init__(self, interface,
+                                    requestHandler=SimpleXMLRPCRequestHandler,
+                                    logRequests=False, allow_none=True)
+        self._idlefuns = {}
+        self.host, self.port = self.socket.getsockname()
+        #self.register_introspection_functions()
+        commands = BitBakeServerCommands(self, cooker)
+        self.autoregister_all_functions(commands, "")
+
+    def autoregister_all_functions(self, context, prefix):
+        """
+        Convenience method for registering all functions in the scope
+        of this class that start with a common prefix
+        """
+        methodlist = inspect.getmembers(context, inspect.ismethod)
+        for name, method in methodlist:
+            if name.startswith(prefix):
+                self.register_function(method, name[len(prefix):])
+
+    def register_idle_function(self, function, data):
+        """Register a function to be called while the server is idle"""
+        assert callable(function)
+        self._idlefuns[function] = data
+
+    def serve_forever(self):
+        """
+        Serve Requests. Overloaded to honor a quit command
+        """
+        self.quit = False
+        while not self.quit:
+            self.handle_request()
+
+        # Tell idle functions we're exiting
+        for function, data in self._idlefuns.items():
+            try:
+                retval = function(self, data, True)
+            except:
+                pass
+
+        self.server_close()
+        return
+
+    def get_request(self):
+        """
+        Get next request. Behaves like the parent class unless a waitpid callback
+        has been set. In that case, we regularly check waitpid when the server is idle
+        """
+        while True:
+            # wait 500 ms for an xmlrpc request
+            if DEBUG: 
+                print "DEBUG: select'ing 500ms waiting for an xmlrpc request..."
+            ifds, ofds, xfds = select.select([self.socket.fileno()], [], [], 0.5)
+            if ifds:
+                return self.socket.accept()
+            # call idle functions only if we're not shutting down atm to prevent a recursion
+            if not self.quit:
+                if DEBUG: 
+                    print "DEBUG: server is idle -- calling idle functions..."
+                for function, data in self._idlefuns.items():
+                    try:
+                        retval = function(self, data, False)
+                        if not retval:
+                            del self._idlefuns[function]
+                    except SystemExit:
+                        raise
+                    except:
+                        import traceback
+                        traceback.print_exc()
+                        pass
+