classes: Update to use corrected bb.utils.explode_dep_versions2 API

The bb.utils.explode_dep_versions function has issues where dependency information
can be lost. The API doesn't support maintaining the correct information so this
changes to use a new function which correctly handles the data.

This patch also fixes various points in the code to ensure that we do not have any
duplicates in things that use explode_dep_versions.

A new sanity test to test the contents of the R* variables is also added.

[Some changes from Mark Hatle <mark.hatle@windriver.com>]

(From OE-Core rev: 16a892431d0c0d03f8b561b92909cf2f11af4918)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

7 files changed, 142 insertions, 92 deletions

diff --git a/meta/classes/insane.bbclass b/meta/classes/insane.bbclass
index b1e68b23fc..4f87c937ad 100644
--- a/meta/classes/insane.bbclass
+++ b/meta/classes/insane.bbclass
@@ -114,7 +114,7 @@ def package_qa_get_machine_dict():
 
 # Currently not being used by default "desktop"
 WARN_QA ?= "ldflags useless-rpaths rpaths unsafe-references-in-binaries unsafe-references-in-scripts staticdev libdir"
-ERROR_QA ?= "dev-so debug-deps dev-deps debug-files arch la2 pkgconfig la perms"
+ERROR_QA ?= "dev-so debug-deps dev-deps debug-files arch la2 pkgconfig la perms dep-cmp"
 
 ALL_QA = "${WARN_QA} ${ERROR_QA}"
 
@@ -646,6 +646,43 @@ def package_qa_check_rdepends(pkg, pkgdest, skip, d):
 
     return sane
 
+def package_qa_check_deps(pkg, pkgdest, skip, d):
+    sane = True
+
+    localdata = bb.data.createCopy(d)
+    localdata.setVar('OVERRIDES', pkg)
+    bb.data.update_data(localdata)
+
+    def check_valid_deps(var):
+        sane = True
+        try:
+            rvar = bb.utils.explode_dep_versions2(localdata.getVar(var, True) or "")
+        except ValueError as e:
+            bb.fatal("%s_%s: %s" % (var, pkg, e))
+            raise e
+        for dep in rvar:
+            for v in rvar[dep]:
+                if v and not v.startswith(('< ', '= ', '> ', '<= ', '>=')):
+                    error_msg = "%s_%s is invalid: %s (%s)   only comparisons <, =, >, <=, and >= are allowed" % (var, pkg, dep, v)
+                    sane = package_qa_handle_error("dep-cmp", error_msg, d)
+        return sane
+
+    sane = True
+    if not check_valid_deps('RDEPENDS'):
+        sane = False
+    if not check_valid_deps('RRECOMMENDS'):
+        sane = False
+    if not check_valid_deps('RSUGGESTS'):
+        sane = False
+    if not check_valid_deps('RPROVIDES'):
+        sane = False
+    if not check_valid_deps('RREPLACES'):
+        sane = False
+    if not check_valid_deps('RCONFLICTS'):
+        sane = False
+
+    return sane
+
 # The PACKAGE FUNC to scan each package
 python do_package_qa () {
     import subprocess
@@ -686,6 +723,7 @@ python do_package_qa () {
     g = globals()
     walk_sane = True
     rdepends_sane = True
+    deps_sane = True
     for package in packages.split():
         skip = (d.getVar('INSANE_SKIP_' + package, True) or "").split()
         if skip:
@@ -709,12 +747,14 @@ python do_package_qa () {
             walk_sane  = False
         if not package_qa_check_rdepends(package, pkgdest, skip, d):
             rdepends_sane = False
+        if not package_qa_check_deps(package, pkgdest, skip, d):
+            deps_sane = False
 
 
     if 'libdir' in d.getVar("ALL_QA", True).split():
         package_qa_check_libdir(d)
 
-    if not walk_sane or not rdepends_sane:
+    if not walk_sane or not rdepends_sane or not deps_sane:
         bb.fatal("QA run found fatal errors. Please consider fixing them.")
     bb.note("DONE with PACKAGE QA")
 }
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index fdef1bea97..36bc3c7cf4 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -429,13 +429,11 @@ python populate_packages_prepend () {
             old_desc = d.getVar('DESCRIPTION_' + pkg, True) or ""
             d.setVar('DESCRIPTION_' + pkg, old_desc + "; " + vals["description"])
 
-        rdepends_str = d.getVar('RDEPENDS_' + pkg, True)
-        if rdepends_str:
-            rdepends = rdepends_str.split()
-        else:
-            rdepends = []
-        rdepends.extend(get_dependencies(file, pattern, format))
-        d.setVar('RDEPENDS_' + pkg, ' '.join(rdepends))
+        rdepends = bb.utils.explode_dep_versions2(d.getVar('RDEPENDS_' + pkg, True) or "")
+        for dep in get_dependencies(file, pattern, format):
+            if not dep in rdepends:
+                rdepends[dep] = []
+        d.setVar('RDEPENDS_' + pkg, bb.utils.join_deps(rdepends, commasep=False))
 
     module_deps = parse_depmod()
     module_regex = '^(.*)\.k?o$'
diff --git a/meta/classes/multilib.bbclass b/meta/classes/multilib.bbclass
index f162293da2..eaaad5fa62 100644
--- a/meta/classes/multilib.bbclass
+++ b/meta/classes/multilib.bbclass
@@ -85,9 +85,9 @@ PACKAGEFUNCS_append = "do_package_qa_multilib"
 python do_package_qa_multilib() {
 
     def check_mlprefix(pkg, var, mlprefix):
-        values = bb.utils.explode_dep_versions(d.getVar('%s_%s' % (var, pkg), True) or d.getVar(var, True) or "")
+        values = bb.utils.explode_deps(d.getVar('%s_%s' % (var, pkg), True) or d.getVar(var, True) or "")
         candidates = []
-        for i in values.keys():
+        for i in values:
             if i.startswith('virtual/'):
                 i = i[len('virtual/'):]
             if (not i.startswith('kernel-module')) and (not i.startswith(mlprefix)):
diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index c8aafc9752..a14561d5ac 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -375,17 +375,13 @@ def get_package_mapping (pkg, d):
 def runtime_mapping_rename (varname, d):
     #bb.note("%s before: %s" % (varname, d.getVar(varname, True)))
 
-    new_depends = []
-    deps = bb.utils.explode_dep_versions(d.getVar(varname, True) or "")
+    new_depends = {}
+    deps = bb.utils.explode_dep_versions2(d.getVar(varname, True) or "")
     for depend in deps:
-        # Have to be careful with any version component of the depend
         new_depend = get_package_mapping(depend, d)
-        if deps[depend]:
-            new_depends.append("%s (%s)" % (new_depend, deps[depend]))
-        else:
-            new_depends.append(new_depend)
+        new_depends[new_depend] = deps[depend]
 
-    d.setVar(varname, " ".join(new_depends) or None)
+    d.setVar(varname, bb.utils.join_deps(new_depends, commasep=False))
 
     #bb.note("%s after: %s" % (varname, d.getVar(varname, True)))
 
@@ -1078,7 +1074,7 @@ python populate_packages () {
                     dangling_links[pkg].append(os.path.normpath(target))
 
     for pkg in package_list:
-        rdepends = bb.utils.explode_dep_versions(d.getVar('RDEPENDS_' + pkg, True) or d.getVar('RDEPENDS', True) or "")
+        rdepends = bb.utils.explode_dep_versions2(d.getVar('RDEPENDS_' + pkg, True) or d.getVar('RDEPENDS', True) or "")
 
         for l in dangling_links[pkg]:
             found = False
@@ -1091,7 +1087,7 @@ python populate_packages () {
                         if p == pkg:
                             break
                         if p not in rdepends:
-                            rdepends[p] = ""
+                            rdepends[p] = []
                         break
             if found == False:
                 bb.note("%s contains dangling symlink to %s" % (pkg, l))
@@ -1637,14 +1633,19 @@ def read_libdep_files(d):
     pkglibdeps = {}
     packages = d.getVar('PACKAGES', True).split()
     for pkg in packages:
-        pkglibdeps[pkg] = []
+        pkglibdeps[pkg] = {}
         for extension in ".shlibdeps", ".pcdeps", ".clilibdeps":
             depsfile = d.expand("${PKGDEST}/" + pkg + extension)
             if os.access(depsfile, os.R_OK):
                 fd = file(depsfile)
                 lines = fd.readlines()
                 fd.close()
-                pkglibdeps[pkg].extend([l.rstrip() for l in lines])
+                for l in lines:
+                    l.rstrip()
+                    deps = bb.utils.explode_dep_versions2(l)
+                    for dep in deps:
+                        if not dep in pkglibdeps[pkg]:
+                            pkglibdeps[pkg][dep] = deps[dep]
     return pkglibdeps
 
 python read_shlibdeps () {
@@ -1652,9 +1653,14 @@ python read_shlibdeps () {
 
     packages = d.getVar('PACKAGES', True).split()
     for pkg in packages:
-        rdepends = bb.utils.explode_dep_versions(d.getVar('RDEPENDS_' + pkg, False) or d.getVar('RDEPENDS', False) or "")
+        rdepends = bb.utils.explode_dep_versions2(d.getVar('RDEPENDS_' + pkg, False) or d.getVar('RDEPENDS', False) or "")
         for dep in pkglibdeps[pkg]:
-            rdepends[dep] = ""
+            # Add the dep if it's not already there, or if no comparison is set
+            if dep not in rdepends:
+                rdepends[dep] = []
+            for v in pkglibdeps[pkg][dep]:
+                if v not in rdepends[dep]:
+                    rdepends[dep].append(v)
         d.setVar('RDEPENDS_' + pkg, bb.utils.join_deps(rdepends, commasep=False))
 }
 
@@ -1679,7 +1685,7 @@ python package_depchains() {
     def pkg_adddeprrecs(pkg, base, suffix, getname, depends, d):
 
         #bb.note('depends for %s is %s' % (base, depends))
-        rreclist = bb.utils.explode_dep_versions(d.getVar('RRECOMMENDS_' + pkg, True) or d.getVar('RRECOMMENDS', True) or "")
+        rreclist = bb.utils.explode_dep_versions2(d.getVar('RRECOMMENDS_' + pkg, True) or d.getVar('RRECOMMENDS', True) or "")
 
         for depend in depends:
             if depend.find('-native') != -1 or depend.find('-cross') != -1 or depend.startswith('virtual/'):
@@ -1692,7 +1698,7 @@ python package_depchains() {
             pkgname = getname(depend, suffix)
             #bb.note("Adding %s for %s" % (pkgname, depend))
             if pkgname not in rreclist and pkgname != pkg:
-                rreclist[pkgname] = ""
+                rreclist[pkgname] = []
 
         #bb.note('setting: RRECOMMENDS_%s=%s' % (pkg, ' '.join(rreclist)))
         d.setVar('RRECOMMENDS_%s' % pkg, bb.utils.join_deps(rreclist, commasep=False))
@@ -1700,7 +1706,7 @@ python package_depchains() {
     def pkg_addrrecs(pkg, base, suffix, getname, rdepends, d):
 
         #bb.note('rdepends for %s is %s' % (base, rdepends))
-        rreclist = bb.utils.explode_dep_versions(d.getVar('RRECOMMENDS_' + pkg, True) or d.getVar('RRECOMMENDS', True) or "")
+        rreclist = bb.utils.explode_dep_versions2(d.getVar('RRECOMMENDS_' + pkg, True) or d.getVar('RRECOMMENDS', True) or "")
 
         for depend in rdepends:
             if depend.find('virtual-locale-') != -1:
@@ -1713,13 +1719,12 @@ python package_depchains() {
             pkgname = getname(depend, suffix)
             #bb.note("Adding %s for %s" % (pkgname, depend))
             if pkgname not in rreclist and pkgname != pkg:
-                rreclist[pkgname] = ""
+                rreclist[pkgname] = []
 
         #bb.note('setting: RRECOMMENDS_%s=%s' % (pkg, ' '.join(rreclist)))
         d.setVar('RRECOMMENDS_%s' % pkg, bb.utils.join_deps(rreclist, commasep=False))
 
     def add_dep(list, dep):
-        dep = dep.split(' (')[0].strip()
         if dep not in list:
             list.append(dep)
 
@@ -1758,10 +1763,7 @@ python package_depchains() {
 
     if "-dbg" in pkgs:
         pkglibdeps = read_libdep_files(d)
-        pkglibdeplist = []
-        for pkg in pkglibdeps:
-            for dep in pkglibdeps[pkg]:
-                add_dep(pkglibdeplist, dep)
+        pkglibdeplist = pkglibdeps.keys()
         # FIXME this should not look at PN once all task recipes inherit from task.bbclass
         dbgdefaultdeps = ((d.getVar('DEPCHAIN_DBGDEFAULTDEPS', True) == '1') or (d.getVar('PN', True) or '').startswith('packagegroup-'))
 
diff --git a/meta/classes/package_deb.bbclass b/meta/classes/package_deb.bbclass
index a25e5d783e..d273cb0f84 100644
--- a/meta/classes/package_deb.bbclass
+++ b/meta/classes/package_deb.bbclass
@@ -341,28 +341,29 @@ python do_package_deb () {
             # adjust these to the '<<' and '>>' equivalents
             #
             for dep in var:
-                if (var[dep] or "").startswith("< "):
-                    var[dep] = var[dep].replace("< ", "<< ")
-                elif (var[dep] or "").startswith("> "):
-                    var[dep] = var[dep].replace("> ", ">> ")
+                for i, v in enumerate(var[dep]):
+                    if (v or "").startswith("< "):
+                        var[dep][i] = var[dep][i].replace("< ", "<< ")
+                    elif (v or "").startswith("> "):
+                        var[dep][i] = var[dep][i].replace("> ", ">> ")
 
-        rdepends = bb.utils.explode_dep_versions(localdata.getVar("RDEPENDS", True) or "")
+        rdepends = bb.utils.explode_dep_versions2(localdata.getVar("RDEPENDS", True) or "")
         debian_cmp_remap(rdepends)
         for dep in rdepends:
                 if '*' in dep:
                         del rdepends[dep]
-        rrecommends = bb.utils.explode_dep_versions(localdata.getVar("RRECOMMENDS", True) or "")
+        rrecommends = bb.utils.explode_dep_versions2(localdata.getVar("RRECOMMENDS", True) or "")
         debian_cmp_remap(rrecommends)
         for dep in rrecommends:
                 if '*' in dep:
                         del rrecommends[dep]
-        rsuggests = bb.utils.explode_dep_versions(localdata.getVar("RSUGGESTS", True) or "")
+        rsuggests = bb.utils.explode_dep_versions2(localdata.getVar("RSUGGESTS", True) or "")
         debian_cmp_remap(rsuggests)
-        rprovides = bb.utils.explode_dep_versions(localdata.getVar("RPROVIDES", True) or "")
+        rprovides = bb.utils.explode_dep_versions2(localdata.getVar("RPROVIDES", True) or "")
         debian_cmp_remap(rprovides)
-        rreplaces = bb.utils.explode_dep_versions(localdata.getVar("RREPLACES", True) or "")
+        rreplaces = bb.utils.explode_dep_versions2(localdata.getVar("RREPLACES", True) or "")
         debian_cmp_remap(rreplaces)
-        rconflicts = bb.utils.explode_dep_versions(localdata.getVar("RCONFLICTS", True) or "")
+        rconflicts = bb.utils.explode_dep_versions2(localdata.getVar("RCONFLICTS", True) or "")
         debian_cmp_remap(rconflicts)
         if rdepends:
             ctrlfile.write("Depends: %s\n" % unicode(bb.utils.join_deps(rdepends)))
diff --git a/meta/classes/package_ipk.bbclass b/meta/classes/package_ipk.bbclass
index 281ce596d5..019bd7cc19 100644
--- a/meta/classes/package_ipk.bbclass
+++ b/meta/classes/package_ipk.bbclass
@@ -379,22 +379,23 @@ python do_package_ipk () {
             # adjust these to the '<<' and '>>' equivalents
             #
             for dep in var:
-                if (var[dep] or "").startswith("< "):
-                    var[dep] = var[dep].replace("< ", "<< ")
-                elif (var[dep] or "").startswith("> "):
-                    var[dep] = var[dep].replace("> ", ">> ")
+                for i, v in enumerate(var[dep]):
+                    if (v or "").startswith("< "):
+                        var[dep][i] = var[dep][i].replace("< ", "<< ")
+                    elif (v or "").startswith("> "):
+                        var[dep][i] = var[dep][i].replace("> ", ">> ")
 
-        rdepends = bb.utils.explode_dep_versions(localdata.getVar("RDEPENDS", True) or "")
+        rdepends = bb.utils.explode_dep_versions2(localdata.getVar("RDEPENDS", True) or "")
         debian_cmp_remap(rdepends)
-        rrecommends = bb.utils.explode_dep_versions(localdata.getVar("RRECOMMENDS", True) or "")
+        rrecommends = bb.utils.explode_dep_versions2(localdata.getVar("RRECOMMENDS", True) or "")
         debian_cmp_remap(rrecommends)
-        rsuggests = bb.utils.explode_dep_versions(localdata.getVar("RSUGGESTS", True) or "")
+        rsuggests = bb.utils.explode_dep_versions2(localdata.getVar("RSUGGESTS", True) or "")
         debian_cmp_remap(rsuggests)
-        rprovides = bb.utils.explode_dep_versions(localdata.getVar("RPROVIDES", True) or "")
+        rprovides = bb.utils.explode_dep_versions2(localdata.getVar("RPROVIDES", True) or "")
         debian_cmp_remap(rprovides)
-        rreplaces = bb.utils.explode_dep_versions(localdata.getVar("RREPLACES", True) or "")
+        rreplaces = bb.utils.explode_dep_versions2(localdata.getVar("RREPLACES", True) or "")
         debian_cmp_remap(rreplaces)
-        rconflicts = bb.utils.explode_dep_versions(localdata.getVar("RCONFLICTS", True) or "")
+        rconflicts = bb.utils.explode_dep_versions2(localdata.getVar("RCONFLICTS", True) or "")
         debian_cmp_remap(rconflicts)
 
         if rdepends:
diff --git a/meta/classes/package_rpm.bbclass b/meta/classes/package_rpm.bbclass
index 49055f2f51..c491775976 100644
--- a/meta/classes/package_rpm.bbclass
+++ b/meta/classes/package_rpm.bbclass
@@ -608,6 +608,13 @@ python write_specfile () {
                 name = "".join(name.split(eext[1] + '-'))
         return name
 
+    def strip_multilib_deps(deps, d):
+        depends = bb.utils.explode_dep_versions2(deps or "")
+        newdeps = {}
+        for dep in depends:
+            newdeps[strip_multilib(dep, d)] = depends[dep]
+        return bb.utils.join_deps(newdeps)
+
 #        ml = d.getVar("MLPREFIX", True)
 #        if ml and name and len(ml) != 0 and name.find(ml) == 0:
 #            return ml.join(name.split(ml, 1)[1:])
@@ -630,18 +637,20 @@ python write_specfile () {
     def translate_vers(varname, d):
         depends = d.getVar(varname, True)
         if depends:
-            depends_dict = bb.utils.explode_dep_versions(depends)
+            depends_dict = bb.utils.explode_dep_versions2(depends)
             newdeps_dict = {}
             for dep in depends_dict:
-                ver = depends_dict[dep]
-                if dep and ver:
+                verlist = []
+                for ver in depends_dict[dep]:
                     if '-' in ver:
                         subd = oe.packagedata.read_subpkgdata_dict(dep, d)
                         if 'PKGV' in subd:
                             pv = subd['PKGV']
                             reppv = pv.replace('-', '+')
-                            ver = ver.replace(pv, reppv)
-                newdeps_dict[dep] = ver
+                            verlist.append(ver.replace(pv, reppv))
+                    else:
+                        verlist.append(ver)
+                newdeps_dict[dep] = verlist
             depends = bb.utils.join_deps(newdeps_dict)
             d.setVar(varname, depends.strip())
 
@@ -650,14 +659,13 @@ python write_specfile () {
     def print_deps(variable, tag, array, d):
         depends = variable
         if depends:
-            depends_dict = bb.utils.explode_dep_versions(depends)
+            depends_dict = bb.utils.explode_dep_versions2(depends)
             for dep in depends_dict:
-                ver = depends_dict[dep]
-                if dep and ver:
+                for ver in depends_dict[dep]:
                     ver = ver.replace('(', '')
                     ver = ver.replace(')', '')
                     array.append("%s: %s %s" % (tag, dep, ver))
-                else:
+                if not len(depends_dict[dep]):
                     array.append("%s: %s" % (tag, dep))
 
     def walk_files(walkpath, target, conffiles):
@@ -709,7 +717,7 @@ python write_specfile () {
     srchomepage    = d.getVar('HOMEPAGE', True)
     srcdescription = d.getVar('DESCRIPTION', True) or "."
 
-    srcdepends     = strip_multilib(d.getVar('DEPENDS', True), d)
+    srcdepends     = strip_multilib_deps(d.getVar('DEPENDS', True), d)
     srcrdepends    = []
     srcrrecommends = []
     srcrsuggests   = []
@@ -772,12 +780,12 @@ python write_specfile () {
         # Map the dependencies into their final form
         mapping_rename_hook(localdata)
 
-        splitrdepends    = strip_multilib(localdata.getVar('RDEPENDS', True), d) or ""
-        splitrrecommends = strip_multilib(localdata.getVar('RRECOMMENDS', True), d) or ""
-        splitrsuggests   = strip_multilib(localdata.getVar('RSUGGESTS', True), d) or ""
-        splitrprovides   = strip_multilib(localdata.getVar('RPROVIDES', True), d) or ""
-        splitrreplaces   = strip_multilib(localdata.getVar('RREPLACES', True), d) or ""
-        splitrconflicts  = strip_multilib(localdata.getVar('RCONFLICTS', True), d) or ""
+        splitrdepends    = strip_multilib_deps(localdata.getVar('RDEPENDS', True), d)
+        splitrrecommends = strip_multilib_deps(localdata.getVar('RRECOMMENDS', True), d)
+        splitrsuggests   = strip_multilib_deps(localdata.getVar('RSUGGESTS', True), d)
+        splitrprovides   = strip_multilib_deps(localdata.getVar('RPROVIDES', True), d)
+        splitrreplaces   = strip_multilib_deps(localdata.getVar('RREPLACES', True), d)
+        splitrconflicts  = strip_multilib_deps(localdata.getVar('RCONFLICTS', True), d)
         splitrobsoletes  = []
 
         # Gather special src/first package data
@@ -826,16 +834,16 @@ python write_specfile () {
         spec_preamble_bottom.append('Group: %s' % splitsection)
 
         # Replaces == Obsoletes && Provides
-        if splitrreplaces and splitrreplaces.strip() != "":
-            for dep in splitrreplaces.split(','):
-                if splitrprovides:
-                    splitrprovides = splitrprovides + ", " + dep
-                else:
-                    splitrprovides = dep
-                if splitrobsoletes:
-                    splitrobsoletes = splitrobsoletes + ", " + dep
-                else:
-                    splitrobsoletes = dep
+        robsoletes = bb.utils.explode_dep_versions2(splitrobsoletes or "")
+        rprovides = bb.utils.explode_dep_versions2(splitrprovides or "")
+        rreplaces = bb.utils.explode_dep_versions2(splitrreplaces or "")
+        for dep in rreplaces:
+            if not dep in robsoletes:
+                robsoletes[dep] = rreplaces[dep]
+            if not dep in rprovides:
+                rprovides[dep] = rreplaces[dep]
+        splitrobsoletes = bb.utils.join_deps(robsoletes, commasep=False)
+        splitrprovides = bb.utils.join_deps(rprovides, commasep=False)
 
         print_deps(splitrdepends, "Requires", spec_preamble_bottom, d)
         # Suggests in RPM are like recommends in OE-core!
@@ -847,7 +855,7 @@ python write_specfile () {
 
         # conflicts can not be in a provide!  We will need to filter it.
         if splitrconflicts:
-            depends_dict = bb.utils.explode_dep_versions(splitrconflicts)
+            depends_dict = bb.utils.explode_dep_versions2(splitrconflicts)
             newdeps_dict = {}
             for dep in depends_dict:
                 if dep not in splitrprovides:
@@ -918,16 +926,16 @@ python write_specfile () {
     tail_source(d)
 
     # Replaces == Obsoletes && Provides
-    if srcrreplaces and srcrreplaces.strip() != "":
-        for dep in srcrreplaces.split(','):
-            if srcrprovides:
-                srcrprovides = srcrprovides + ", " + dep
-            else:
-                srcrprovides = dep
-            if srcrobsoletes:
-                srcrobsoletes = srcrobsoletes + ", " + dep
-            else:
-                srcrobsoletes = dep
+    robsoletes = bb.utils.explode_dep_versions2(srcrobsoletes or "")
+    rprovides = bb.utils.explode_dep_versions2(srcrprovides or "")
+    rreplaces = bb.utils.explode_dep_versions2(srcrreplaces or "")
+    for dep in rreplaces:
+        if not dep in robsoletes:
+            robsoletes[dep] = rreplaces[dep]
+        if not dep in rprovides:
+            rprovides[dep] = rreplaces[dep]
+    srcrobsoletes = bb.utils.join_deps(robsoletes, commasep=False)
+    srcrprovides = bb.utils.join_deps(rprovides, commasep=False)
 
     print_deps(srcdepends, "BuildRequires", spec_preamble_top, d)
     print_deps(srcrdepends, "Requires", spec_preamble_top, d)
@@ -940,7 +948,7 @@ python write_specfile () {
     
     # conflicts can not be in a provide!  We will need to filter it.
     if srcrconflicts:
-        depends_dict = bb.utils.explode_dep_versions(srcrconflicts)
+        depends_dict = bb.utils.explode_dep_versions2(srcrconflicts)
         newdeps_dict = {}
         for dep in depends_dict:
             if dep not in srcrprovides: