package_rpm: Only rebuild the indexes if the packages have changed

This change farms the solvedb creation out to a separate script which
handles creation of the index, only if mtime of any of the packages
has changed.

For a core-image-minimal set of rpm's this saves ~20s of a 45s rootfs
build. For core-image-sato it saves 1 minute of a 5 minute rootfs build.
The more packages in the system, the bigger the saving will be.

(From OE-Core rev: 3021136e7b42ab64ca16f30c88467c4b00d51ee0)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/package_rpm.bbclass

@@ -40,12 +40,13 @@ package_update_index_rpm_common () {
 	rpmconf_base="$1"
 	shift
 
+        createdirs=""
 	for archvar in "$@"; do
 		eval archs=\${${archvar}}
 		packagedirs=""
 		for arch in $archs; do
 			packagedirs="${DEPLOY_DIR_RPM}/$arch $packagedirs"
-			rm -rf ${DEPLOY_DIR_RPM}/$arch/solvedb
+			rm -rf ${DEPLOY_DIR_RPM}/$arch/solvedb.done
 		done
 
 		cat /dev/null > ${rpmconf_base}-${archvar}.conf
@@ -53,22 +54,11 @@ package_update_index_rpm_common () {
 			if [ -e $pkgdir/ ]; then
 				echo "Generating solve db for $pkgdir..."
 				echo $pkgdir/solvedb >> ${rpmconf_base}-${archvar}.conf
-				if [ -d $pkgdir/solvedb ]; then
-					# We've already processed this and it's a duplicate
-					continue
-				fi
-				mkdir -p $pkgdir/solvedb
-				echo "# Dynamically generated solve manifest" >> $pkgdir/solvedb/manifest
-				find $pkgdir -maxdepth 1 -type f >> $pkgdir/solvedb/manifest
-				${RPM} -i --replacepkgs --replacefiles --oldpackage \
-					-D "_dbpath $pkgdir/solvedb" --justdb \
-					--noaid --nodeps --noorder --noscripts --notriggers --noparentdirs --nolinktos --stats \
-					--ignoresize --nosignature --nodigest \
-					-D "__dbi_txn create nofsync" \
-					$pkgdir/solvedb/manifest
+                                createdirs="$createdirs $pkgdir"
 			fi
 		done
 	done
+	rpm-createsolvedb.py "${RPM}" $createdirs
 }
 
 #