[PATCH] classes/package_rpm: fix bitbake package-index for RPM

[Paul Eggleton <paul.eggleton@linux.intel.com>]

The function that "bitbake package-index" relies upon when using the RPM
package backend (package_update_index_rpm()) uses MULTILIB_PREFIX_LIST
to get the list of package architectures to be indexed, but that
variable is only set when populate_sdk_rpm or rootfs_rpm are inherited,
which is not the case for the package-index recipe. Until we're able to
refactor this properly, for minimal impact just use the value of
ALL_MULTILIB_PACKAGE_ARCHS if MULTILIB_PREFIX_LIST does not give us any
architectures (the equivalent function in the ipk backend uses the
former variable).

Having "bitbake package-index" working is important because it's the
only practical way of indexing RPM packages for use as a feed; host
versions of createrepo won't work properly because they won't support
indexing recommends relationships.

Stopgap fix for [YOCTO #5278].

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
---
 meta/classes/package_rpm.bbclass | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/classes/package_rpm.bbclass b/meta/classes/package_rpm.bbclass
index fd861e9..05de1ff 100644
--- a/meta/classes/package_rpm.bbclass
+++ b/meta/classes/package_rpm.bbclass
@@ -35,6 +35,11 @@ package_update_index_rpm () {
 		done
 	done
 
+	# FIXME stopgap for broken "bitbake package-index" since MULTILIB_PREFIX_LIST isn't set for that
+	if [ "$target_archs" = "" ] ; then
+		target_archs="${ALL_MULTILIB_PACKAGE_ARCHS}"
+	fi
+
 	target_archs=`echo "$target_archs" | tr - _`
 
 	archs=`for arch in $target_archs $sdk_archs ; do
-- 
1.8.1.2