From 2fd257f6c610624f05c8dd3fe1486364af04696f Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Mon, 15 Aug 2011 23:59:32 +0100
Subject: multilib: Only build one kernel

For a given system we only want one kernel to be built. This change makes
the main kernel recipe provide all of the provides of the various enabled
multilibs hence allowing it to fulfil all the appropriate dependencies.

To make this work a global multilib class file needed to be created.

This patch also enables this multi provider functionality for "allarch"
packages.

[YOCTO #1361]

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/classes/multilib.bbclass | 39 ++++++++++++---------------------------
 1 file changed, 12 insertions(+), 27 deletions(-)

(limited to 'meta/classes/multilib.bbclass')

diff --git a/meta/classes/multilib.bbclass b/meta/classes/multilib.bbclass
index 5d975fd33..583d76b0f 100644
--- a/meta/classes/multilib.bbclass
+++ b/meta/classes/multilib.bbclass
@@ -6,12 +6,17 @@ python multilib_virtclass_handler () {
     variant = e.data.getVar("BBEXTENDVARIANT", True)
     if cls != "multilib" or not variant:
         return
+
+    # There should only be one kernel in multilib configs
+    if bb.data.inherits_class('kernel', e.data) or bb.data.inherits_class('module-base', e.data) or bb.data.inherits_class('allarch', e.data):
+        raise bb.parse.SkipPackage("We shouldn't have multilib variants for the kernel")
+
     save_var_name=e.data.getVar("MULTILIB_SAVE_VARNAME", True) or ""
     for name in save_var_name.split():
         val=e.data.getVar(name, True)
         if val:
             e.data.setVar(name + "_MULTILIB_ORIGINAL", val)
-
+ 
     override = ":virtclass-multilib-" + variant
 
     e.data.setVar("MLPREFIX", variant + "-")
@@ -28,16 +33,6 @@ STAGINGCC_prepend = "${BBEXTENDVARIANT}-"
 python __anonymous () {
     variant = d.getVar("BBEXTENDVARIANT", True)
 
-    def extend_name(name):
-        if name.startswith("virtual/"):
-            subs = name.split("/", 1)[1]
-            if not subs.startswith(variant):
-                return "virtual/" + variant + "-" + subs
-            return name
-        if not name.startswith(variant):
-            return variant + "-" + name
-        return name
-
     def map_dependencies(varname, d, suffix = ""):
         if suffix:
             varname = varname + "_" + suffix
@@ -50,25 +45,15 @@ python __anonymous () {
             if dep.endswith(("-native", "-native-runtime")):
                 newdeps.append(dep)
             else:
-                newdeps.append(extend_name(dep))
+                newdeps.append(multilib_extend_name(variant, dep))
         d.setVar(varname, " ".join(newdeps))
 
-    def map_variable(varname, d):
-        var = d.getVar(varname, True)
-        if not var:
-            return
-        var = var.split()
-        newvar = []
-        for v in var:
-            newvar.append(extend_name(v))
-        d.setVar(varname, " ".join(newvar))
-
     pkgs_mapping = []
     for pkg in (d.getVar("PACKAGES", True) or "").split():
         if pkg.startswith(variant):
             pkgs_mapping.append([pkg.split(variant + "-")[1], pkg])
             continue
-        pkgs_mapping.append([pkg, extend_name(pkg)])
+        pkgs_mapping.append([pkg, multilib_extend_name(variant, pkg)])
 
     d.setVar("PACKAGES", " ".join([row[1] for row in pkgs_mapping]))
 
@@ -87,8 +72,8 @@ python __anonymous () {
         map_dependencies("RCONFLICTS", d, pkg)
         map_dependencies("PKG", d, pkg)
 
-    map_variable("PROVIDES", d)
-    map_variable("PACKAGES_DYNAMIC", d)
-    map_variable("PACKAGE_INSTALL", d)
-    map_variable("INITSCRIPT_PACKAGES", d)
+    multilib_map_variable("PROVIDES", variant, d)
+    multilib_map_variable("PACKAGES_DYNAMIC", variant, d)
+    multilib_map_variable("PACKAGE_INSTALL", variant, d)
+    multilib_map_variable("INITSCRIPT_PACKAGES", variant, d)
 }
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