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, 8 insertions, 1 deletions

diff --git a/meta/lib/oe/sstatesig.py b/meta/lib/oe/sstatesig.py
index 5dcc2f5cd6..18c5a353a2 100644
--- a/meta/lib/oe/sstatesig.py
+++ b/meta/lib/oe/sstatesig.py
@@ -150,16 +150,23 @@ class SignatureGeneratorOEBasicHash(bb.siggen.SignatureGeneratorBasicHash):
         if recipename in self.unlockedrecipes:
             unlocked = True
         else:
+            def get_mc(tid):
+                tid = tid.rsplit('.', 1)[0]
+                if tid.startswith('multiconfig:'):
+                    elems = tid.split(':')
+                    return elems[1]
             def recipename_from_dep(dep):
                 # The dep entry will look something like
                 # /path/path/recipename.bb.task, virtual:native:/p/foo.bb.task,
                 # ...
+
                 fn = dep.rsplit('.', 1)[0]
                 return dataCache.pkg_fn[fn]
 
+            mc = get_mc(fn)
             # If any unlocked recipe is in the direct dependencies then the
             # current recipe should be unlocked as well.
-            depnames = [ recipename_from_dep(x) for x in deps ]
+            depnames = [ recipename_from_dep(x) for x in deps if mc == get_mc(x)]
             if any(x in y for y in depnames for x in self.unlockedrecipes):
                 self.unlockedrecipes[recipename] = ''
                 unlocked = True