multilib: Add support for compiling recipes against multiple ABIs

This patch adds the core multilib class which can be used along with a
parameter specifying the mutlilib to use in BBCLASSEXTEND.

The MLPREFIX variable is added and can be used in cases where its too
difficult to dynmaically work out where a mutltilib prefix is needed
to be added to a variable.

This includes:
  * SHLIBSDIR and PACKAGE_ARCH fixes from Lianhao Lu.
  * PACKAGE_DYNAMIC mapping from Yu Ke
  * PACKAGE_INSTALL mapping from Yu Ke
  * RPROVIDES mapping from Yu Ke
  * TARGET_VENDOR fix from Mark Hatle
  * Ignorning *-native-runtime dependnecies as well as *-native from Yu Ke
  * Map PKG and ALLOW_EMPTY from Dongxiao Xu
  * Ensure RCONFLICTS and PKG field dependencies are remapped (from Dongxiao Xu)
  * Ensure PN and MLPREFIX are set at the same time to ensure consistent BPN values (Yu Ke)

(From OE-Core rev: 5d9453049915db48ec4b5972e12287417ebb61a2)

Signed-off-by: Yu Ke <ke.yu@intel.com>
Signed-off-by: Xu Dongxiao <dongxiao.xu@intel.com>
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-yocto/conf/local.conf.sample

@@ -223,3 +223,8 @@ NO32LIBS = "1"
 
 # Uncomment this if your host distribution provides the help2man tool.
 #ASSUME_PROVIDED += "help2man-native"
+
+# Uncomment the following lines to enable multilib builds
+#require conf/multilib.conf
+#MULTILIBS = "multilib:lib32"
+#TUNENAME_virtclass-multilib-lib32 = "x86"

meta/classes/autotools.bbclass

@@ -9,7 +9,7 @@ def autotools_dep_prepend(d):
 		return deps
 	deps += 'autoconf-native automake-native help2man-native '
 
-	if not pn in ['libtool', 'libtool-native', 'libtool-cross']:
+	if not pn in ['libtool', 'libtool-native'] and not pn.endswith("libtool-cross"):
 		deps += 'libtool-native '
 		if not bb.data.inherits_class('native', d) \
                         and not bb.data.inherits_class('cross', d) \

meta/classes/cross.bbclass

@@ -54,4 +54,3 @@ do_populate_sysroot[sstate-inputdirs] = "${SYSROOT_DESTDIR}/${STAGING_DIR_NATIVE
 do_install () {
 	oe_runmake 'DESTDIR=${D}' install
 }
-

meta/classes/insane.bbclass

@@ -571,12 +571,13 @@ Rerun configure task after fixing this. The path was '%s'""" % root)
 
     cnf = bb.data.getVar('EXTRA_OECONF', d, True) or ""
     if "gettext" not in bb.data.getVar('P', d, True) and "gcc-runtime" not in bb.data.getVar('P', d, True) and "--disable-nls" not in cnf:
+       ml = d.getVar("MLPREFIX", True) or ""
        if bb.data.inherits_class('native', d) or bb.data.inherits_class('cross', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('nativesdk', d):
           gt = "gettext-native"
        elif bb.data.inherits_class('cross-canadian', d):
           gt = "gettext-nativesdk"
        else:
-          gt = "virtual/gettext"
+          gt = "virtual/" + ml + "gettext"
        deps = bb.utils.explode_deps(bb.data.getVar('DEPENDS', d, True) or "")
        if gt not in deps:
           for config in configs:

meta/classes/package.bbclass

@@ -168,6 +168,17 @@ python () {
         bb.data.setVarFlag('do_package', 'deptask', " ".join(deps), d)
     else:
         d.setVar("PACKAGERDEPTASK", "")
+
+    multilib_archs = []
+    multilibs= d.getVar('MULTILIBS', True) or ""
+    if multilibs:
+        for ext in multilibs.split():
+            eext = ext.split(':')
+            if len(eext) > 1:
+                if eext[0] == 'multilib':
+                    multilib_archs.append('ml' + eext[1])
+
+    d.setVar("MULTILIB_ARCHS", ' '.join(multilib_archs))
 }
 
 def splitfile(file, debugfile, debugsrcdir, d):

meta/conf/bitbake.conf

@@ -735,3 +735,4 @@ BB_SIGNATURE_HANDLER ?= "basic"
 BB_HASHTASK_WHITELIST ?= "(.*-cross$|.*-native$|.*-cross-initial$|.*-cross-intermediate$|^virtual:native:.*|^virtual:nativesdk:.*)"
 BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH USERNAME STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE"
 
+MLPREFIX ??= ""

meta/recipes-core/dbus/dbus.inc

@@ -5,11 +5,9 @@ SECTION = "base"
 LICENSE = "AFL-2 | GPLv2+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=10dded3b58148f3f1fd804b26354af3e \
                     file://dbus/dbus.h;firstline=6;endline=20;md5=6eea2e0c7750dd8e620dcb1437312fa5"
-x11deps = "virtual/libx11 libsm"
-basedeps = "expat virtual/libintl"
-DEPENDS = "${basedeps} ${x11deps}"
-DEPENDS_virtclass-native = "${basedeps}"
-DEPENDS_virtclass-nativesdk = "${basedeps} virtual/libx11"
+DEPENDS = "expat virtual/libintl virtual/libx11 libsm"
+DEPENDS_virtclass-native = "expat-native virtual/libintl-native"
+DEPENDS_virtclass-nativesdk = "expat-nativesdk virtual/libintl-nativesdk virtual/libx11"
 
 SRC_URI = "http://dbus.freedesktop.org/releases/dbus/dbus-${PV}.tar.gz \
            file://tmpdir.patch; \

meta/recipes-devtools/gcc/libgcc_4.6.bb

@@ -41,9 +41,9 @@ do_install () {
 	chmod +x ${D}${base_libdir}/libgcc_s.so.*
 }
 
-do_package_write_ipk[depends] += "virtual/libc:do_package"
-do_package_write_deb[depends] += "virtual/libc:do_package"
-do_package_write_rpm[depends] += "virtual/libc:do_package"
+do_package_write_ipk[depends] += "virtual/${MLPREFIX}libc:do_package"
+do_package_write_deb[depends] += "virtual/${MLPREFIX}libc:do_package"
+do_package_write_rpm[depends] += "virtual/${MLPREFIX}libc:do_package"
 
 BBCLASSEXTEND = "nativesdk"