Site file handling update: Instead of one site file per target, allow entries to be shared. Handled through siteinfo.bbclass

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@931 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 126 insertions, 0 deletions

diff --git a/meta/classes/siteinfo.bbclass b/meta/classes/siteinfo.bbclass
new file mode 100644
index 0000000000..5a37768b52
--- /dev/null
+++ b/meta/classes/siteinfo.bbclass
@@ -0,0 +1,126 @@
+# This class exists to provide information about the targets that
+# may be needed by other classes and/or recipes. If you add a new
+# target this will probably need to be updated.
+
+#
+# Returns information about 'what' for the named target 'target'
+# where 'target' == "<arch>-<os>"
+#
+# 'what' can be one of
+# * target: Returns the target name ("<arch>-<os>")
+# * endianess: Return "be" for big endian targets, "le" for little endian
+# * bits: Returns the bit size of the target, either "32" or "64"
+# * libc: Returns the name of the c library used by the target
+#
+# It is an error for the target not to exist.
+# If 'what' doesn't exist then an empty value is returned
+#
+def get_siteinfo_list(d):
+       import bb
+
+       target = bb.data.getVar('HOST_ARCH', d, 1) + "-" + bb.data.getVar('HOST_OS', d, 1)
+
+       targetinfo = {\
+               "armeb-linux":             "endian-big bit-32 common-glibc arm-common",\
+               "armeb-linux-uclibc":      "endian-big bit-32 common-uclibc arm-common",\
+               "arm-linux":               "endian-little bit-32 common-glibc arm-common",\
+               "arm-linux-gnueabi":       "endian-little bit-32 common-glibc arm-common arm-linux",\
+               "arm-linux-uclibc":        "endian-little bit-32 common-uclibc arm-common",\
+               "arm-linux-uclibcgnueabi": "endian-little bit-32 common-uclibc arm-common arm-linux-uclibc",\
+               "i386-linux":              "endian-little bit-32 common-glibc ix86-common",\
+               "i486-linux":              "endian-little bit-32 common-glibc ix86-common",\
+               "i586-linux":              "endian-little bit-32 common-glibc ix86-common",\
+               "i686-linux":              "endian-little bit-32 common-glibc ix86-common",\
+               "i386-linux-uclibc":       "endian-little bit-32 common-uclibc ix86-common",\
+               "i486-linux-uclibc":       "endian-little bit-32 common-uclibc ix86-common",\
+               "i586-linux-uclibc":       "endian-little bit-32 common-uclibc ix86-common",\
+               "i686-linux-uclibc":       "endian-little bit-32 common-uclibc ix86-common",\
+               "mipsel-linux":            "endian-little bit-32 common-glibc",\
+               "mipsel-linux-uclibc":     "endian-little bit-32 common-uclibc",\
+               "powerpc-darwin":          "endian-big bit-32 common-darwin",\
+               "powerpc-linux":           "endian-big bit-32 common-glibc",\
+               "powerpc-linux-uclibc":    "endian-big bit-32 common-uclibc",\
+               "sh3-linux":               "endian-little bit-32 common-glibc sh-common",\
+               "sh4-linux":               "endian-little bit-32 common-glibc sh-common",\
+               "sh4-linux-uclibc":        "endian-little bit-32 common-uclibc sh-common",\
+               "sparc-linux":             "endian-big bit-32 common-glibc",\
+               "x86_64-linux":            "endian-little bit-64 common-glibc",\
+               "x86_64-linux-uclibc":     "endian-little bit-64 common-uclibc"}
+       if target in targetinfo:
+               info = targetinfo[target].split()
+               info.append(target)
+               return info
+       else:
+               bb.error("Information not available for target '%s'" % target)
+
+
+#
+# Define which site files to use. We check for several site files and
+# use each one that is found, based on the list returned by get_siteinfo_list()
+#
+# Search for the files in the following directories:
+# 1) ${BBPATH}/site (in reverse) - app specific, then site wide
+# 2) ${FILE_DIRNAME}/site-${PV}         - app version specific
+#
+def siteinfo_get_files(d):
+       import bb, os
+
+       sitefiles = ""
+
+       # Determine which site files to look for
+       sites = get_siteinfo_list(d)
+       sites.append("common");
+
+       # Check along bbpath for site files and append in reverse order so
+       # the application specific sites files are last and system site
+       # files first.
+       path_bb = bb.data.getVar('BBPATH', d, 1)
+       for p in (path_bb or "").split(':'):
+               tmp = ""
+               for i in sites:
+                       fname = os.path.join(p, 'site', i)
+                       if os.path.exists(fname):
+                               tmp += fname + " "
+               sitefiles = tmp + sitefiles;
+
+       # Now check for the applications version specific site files
+       path_pkgv = os.path.join(bb.data.getVar('FILE_DIRNAME', d, 1), "site-" + bb.data.getVar('PV', d, 1))
+       for i in sites:
+               fname = os.path.join(path_pkgv, i)
+               if os.path.exists(fname):
+                       sitefiles += fname + " "
+
+       bb.note("SITE files " + sitefiles);
+       return sitefiles
+
+#
+# Export CONFIG_SITE to the enviroment. The autotools will make use
+# of this to determine where to load in variables from. This is a
+# space seperate list of shell scripts processed in the order listed.
+#
+export CONFIG_SITE = "${@siteinfo_get_files(d)}"
+
+
+def siteinfo_get_endianess(d):
+       info = get_siteinfo_list(d)
+       if 'endian-little' in info:
+              return "le"
+       elif 'endian-big' in info:
+              return "be"
+       bb.error("Site info could not determine endianess for target")
+
+def siteinfo_get_bits(d):
+       info = get_siteinfo_list(d)
+       if 'bit-32' in info:
+              return "32"
+       elif 'bit-64' in info:
+              return "64"
+       bb.error("Site info could not determine bit size for target")
+
+#
+# Make some information available via variables
+#
+SITEINFO_ENDIANESS  = "${@siteinfo_get_endianess(d)}"
+SITEINFO_BITS       = "${@siteinfo_get_bits(d)}"
+
+