lmp-staging: archiver multiconfig signature workaround

The OE archiver bbclass do_deploy_archives task is broken
with multiconfig for shared recipes, the tasks have
diferent signatures for each machine used in the
multiconfig and this can rise race conditions.

To eliminate this race conditions we will use the signature
of the previous task do_unpack_and_patch that works with
multiconfig, this will make the do_deploy_archives task
machine agnostic.

Steps to reproduce:

| bitbake mc:k3r5:gcc-source-12.2.0 gcc-source-12.2.0 -c do_deploy_archives -S none

And check the signatures:

| cat locked-sigs.inc |grep gcc-source | sort | uniq
| # gcc-source-12.2.0:do_deploy_archives:541a6951ee58276d9698f631a18ff47962131fb5a21d9b7d60e27bc84165ecb2 \
| # gcc-source-12.2.0:do_deploy_archives:b3149f6c89dc250d02a978e2492126dcef43ffac974856d94e2be3d8038bc2fd \

Signed-off-by: Jose Quaresma <[email protected]>

meta-lmp-base/classes/lmp-staging.bbclass

@@ -20,6 +20,12 @@ python __anonymous() {
 
     if pn in ["clang", "rust"]:
         d.appendVarFlag('do_compile', 'lockfiles', " ${TMPDIR}/lmp-hack-avoid-oom-do_compile.lock")
+
+    if pn.startswith("gcc-source-") and \
+        if bb.data.inherits_class('archiver', d) and \
+            d.getVarFlag('ARCHIVER_MODE', 'src') == "original" and \
+            d.getVarFlag('ARCHIVER_MODE', 'diff') == '1':
+                d.setVarFlag('do_deploy_archives', 'vardepvalue', '%s:do_unpack_and_patch' % pn)
 }
 
 inherit ${INHERIT_KERNEL_MODSIGN}