From 30b4bff944c4625696e9be97ce4912a2710d13e9 Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Wed, 9 Jul 2014 21:18:04 +0100
Subject: package.bbclass: Generate runtime-rprovides data

Currently, given a list of rdepends its near impossible to figure out
which ones are potentially invalid and which might be an RPROVIDES of a
package.

This problem is simple to solve, we can write lookup data into the
pkgdata. This patch does that, accounting for the fact that multiple
packages can RPROVIDE the same thing (particularly with locales). Its
done with symlinks so the performance overhead is minimal.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/classes/package.bbclass | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index 988e148893..735837667f 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -1134,11 +1134,11 @@ python emit_pkgdata() {
         val = d.getVar('%s_%s' % (var, pkg), True)
         if val:
             f.write('%s_%s: %s\n' % (var, pkg, encode(val)))
-            return
+            return val
         val = d.getVar('%s' % (var), True)
         if val:
             f.write('%s: %s\n' % (var, encode(val)))
-        return
+        return val
 
     def write_extra_pkgs(variants, pn, packages, pkgdatadir):
         for variant in variants:
@@ -1207,7 +1207,7 @@ python emit_pkgdata() {
         write_if_exists(sf, pkg, 'DESCRIPTION')
         write_if_exists(sf, pkg, 'SUMMARY')
         write_if_exists(sf, pkg, 'RDEPENDS')
-        write_if_exists(sf, pkg, 'RPROVIDES')
+        rprov = write_if_exists(sf, pkg, 'RPROVIDES')
         write_if_exists(sf, pkg, 'RRECOMMENDS')
         write_if_exists(sf, pkg, 'RSUGGESTS')
         write_if_exists(sf, pkg, 'RREPLACES')
@@ -1235,6 +1235,13 @@ python emit_pkgdata() {
         # Symlinks needed for reverse lookups (from the final package name)
         subdata_sym = pkgdatadir + "/runtime-reverse/%s" % pkgval
         oe.path.symlink("../runtime/%s" % pkg, subdata_sym, True)
+        
+        # Symlinks needed for rprovides lookup
+        if rprov:
+            for p in rprov.strip().split():
+                subdata_sym = pkgdatadir + "/runtime-rprovides/%s/%s" % (p, pkg)
+                bb.utils.mkdirhier(os.path.dirname(subdata_sym))
+                oe.path.symlink("../../runtime/%s" % pkg, subdata_sym, True)
 
         allow_empty = d.getVar('ALLOW_EMPTY_%s' % pkg, True)
         if not allow_empty:
@@ -1254,7 +1261,7 @@ python emit_pkgdata() {
 
     bb.utils.unlockfile(lf)
 }
-emit_pkgdata[dirs] = "${PKGDESTWORK}/runtime ${PKGDESTWORK}/runtime-reverse"
+emit_pkgdata[dirs] = "${PKGDESTWORK}/runtime ${PKGDESTWORK}/runtime-reverse ${PKGDESTWORK}/runtime-rprovides"
 
 ldconfig_postinst_fragment() {
 if [ x"$D" = "x" ]; then
-- 
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