kern-tools: re-enable scc merge command

The ability to merge two branches directly from a .scc file was
dropped during the streamlining of the tools.

As was pointed out by David Vincent <freesilicon@gmail.com>, there is
once again a valid use case for this functionality, so we restore the
capability.

(From OE-Core rev: a0059ebbb52c659282e355664bba1a2fa282170e)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 5cfd8aff50..36f61c5694 100644
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -148,7 +148,7 @@ do_kernel_metadata() {
         # run1: pull all the configuration fragments, no matter where they come from
         elements="`echo -n ${bsp_definition} ${sccs} ${patches} ${KERNEL_FEATURES}`"
         if [ -n "${elements}" ]; then
-                scc --force -o ${S}/${meta_dir}:cfg,meta ${includes} ${bsp_definition} ${sccs} ${patches} ${KERNEL_FEATURES}
+                scc --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} ${bsp_definition} ${sccs} ${patches} ${KERNEL_FEATURES}
                 if [ $? -ne 0 ]; then
                         bbfatal_log "Could not generate configuration queue for ${KMACHINE}."
                 fi
@@ -165,6 +165,7 @@ do_kernel_metadata() {
 }
 
 do_patch() {
+        set +e
         cd ${S}
 
         check_git_config
@@ -177,6 +178,19 @@ do_patch() {
                         bbfatal_log "Patch failures can be resolved in the linux source directory ${S})"
                 fi
         fi
+
+        if [ -f "${meta_dir}/merge.queue" ]; then
+                # we need to merge all these branches
+                for b in $(cat ${meta_dir}/merge.queue); do
+                        git show-ref --verify --quiet refs/heads/${b}
+                        if [ $? -eq 0 ]; then
+                                bbnote "Merging branch ${b}"
+                                git merge -q --no-ff -m "Merge branch ${b}" ${b}
+                        else
+                                bbfatal "branch ${b} does not exist, cannot merge"
+                        fi
+                done
+        fi
 }
 
 do_kernel_checkout() {