[OE-core] [PATCH 1/1] multilib_global.bbclass: fix PREFERRED_VERSION for cross-canadian

[Robert Yang]

Fixed:
When both gcc 4.9 and 5.1 are in the layer, and set these in local.conf:
GCCVERSION = "4.9%"
MACHINE = "qemux86-64"
require conf/multilib.conf
MULTILIBS = "multilib:lib32"
DEFAULTTUNE_virtclass-multilib-lib32 = "x86"

$ bitbake gcc-cross-canadian-i586

Then gcc 5.1 would be built rather than 4.9, it is because
multilib_virtclass_handler() doesn't reset PN such as gcc-cross-canadian
to lib32-gcc-cross-canadian, but preferred_ml_updates() rename
PREFERRED_VERSION_gcc-cross-canadian to
PREFERRED_VERSION_lib32-gcc-cross-canadian, so it can't get the required
value PREFERRED_VERSION_gcc-cross-canadian, and then gcc 5.1 would be
used, don't reset it in preferred_ml_updates() will fix the problem.

[YOCTO #7950]

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/classes/multilib_global.bbclass |   15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/meta/classes/multilib_global.bbclass b/meta/classes/multilib_global.bbclass
index 67bd70d..a9c0efc 100644
--- a/meta/classes/multilib_global.bbclass
+++ b/meta/classes/multilib_global.bbclass
@@ -30,7 +30,16 @@ def preferred_ml_updates(d):
                 override = ":virtclass-multilib-" + p
                 localdata.setVar("OVERRIDES", localdata.getVar("OVERRIDES", False) + override)
                 bb.data.update_data(localdata)
-                newname = localdata.expand(v).replace("PREFERRED_VERSION_", "PREFERRED_VERSION_" + p + '-')
+                # Because multilib_virtclass_handler() doesn't reset PN such as
+                # gcc-cross-canadian to lib32-gcc-cross-canadian, so don't
+                # reset PREFERRED_VERSION_gcc-cross-canadian to
+                # PREFERRED_VERSION_lib32-gcc-cross-canadian, just expand v
+                # (need expand TRANSLATED_TARGET_ARCH) and set
+                # PREFERRED_VERSION_gcc-cross-canadian again.
+                if '-cross-canadian-' in pkg:
+                    newname = localdata.expand(v)
+                else:
+                    newname = localdata.expand(v).replace("PREFERRED_VERSION_", "PREFERRED_VERSION_" + p + '-')
                 if newname != v:
                     newval = localdata.expand(val)
                     d.setVar(newname, newval)
@@ -49,7 +58,7 @@ def preferred_ml_updates(d):
         pkg = prov.replace("PREFERRED_PROVIDER_", "")
         if pkg.endswith("-native") or "-crosssdk-" in pkg or pkg.startswith(("nativesdk-", "virtual/nativesdk-")):
             continue
-        if 'cross-canadian' in pkg:
+        if '-cross-canadian-' in pkg:
             for p in prefixes:
                 localdata = bb.data.createCopy(d)
                 override = ":virtclass-multilib-" + p
@@ -94,7 +103,7 @@ def preferred_ml_updates(d):
     mp = (d.getVar("MULTI_PROVIDER_WHITELIST", True) or "").split()
     extramp = []
     for p in mp:
-        if p.endswith("-native") or "-crosssdk-" in p or p.startswith(("nativesdk-", "virtual/nativesdk-")) or 'cross-canadian' in p:
+        if p.endswith("-native") or "-crosssdk-" in p or p.startswith(("nativesdk-", "virtual/nativesdk-")) or '-cross-canadian-' in p:
             continue
         virt = ""
         if p.startswith("virtual/"):
-- 
1.7.9.5