multiconfig: Enable multiconfig dependencies on oe-core

This patch enables multiconfig dependencies (mcdepends) to be used on
recipes using the following format:

task[mcdepends] = "multiconfig:FROM-MC:TO-MC:PN:task-to-depend-on"

For the sake of simplicity consider the following example:

Assuming we have set up multiconfig builds, one for qemux86 and one for
qemuarm, named x86 and arm respectively.

Adding the following line to an image recipe (core-image-sato):
do_image[mcdepends] = "multiconfig:x86:arm:core-image-minimal:do_rootfs"

Would state that core-image-sato:do_image from x86 will depend on
core-image-minimal:do_rootfs from arm so it can be executed.

This patch makes modifications to bitbake.conf to enable mcdepends, and
to sstatesig and staging.bbclass to avoid conflicts between packages from
different multiconfigs.

[YOCTO #10681]

(From OE-Core rev: f71bfe833c657244d2fd07b3b71e86081d7d1c04)

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandr@xilinx.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index e28f3c7311..f68954c511 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -877,7 +877,7 @@ BB_SIGNATURE_EXCLUDE_FLAGS ?= "doc deps depends \
     file-checksums python func task export unexport noexec nostamp dirs cleandirs \
     sstate-lockfile-shared prefuncs postfuncs export_func deptask rdeptask \
     recrdeptask nodeprrecs stamp-extra-info sstate-outputdirs filename lineno \
-    progress"
+    progress mcdepends"
 
 MLPREFIX ??= ""
 MULTILIB_VARIANTS ??= ""