[OE-core] [PATCH] meta: license: fix non-SPDX license being removed from INCOMPATIBLE_LICENSE

[Quentin Schulz]

A non-SPDX license (which is not an alias to an SPDX license) cannot
currently be marked as incompatible in INCOMPATIBLE_LICENSE.
In the current state, we take all INCOMPATIBLE_LICENSE and pass them
through expand_wildcard_licenses which is only adding SPDX licenses that
match the glob regexp of what is in INCOMPATIBLE_LICENSE (be it a direct
match to an SPDX license or via an alias).

This does not work well with custom licenses.

E.g.:

foo.bb:
LICENSE = "FooLicense"

conf/local.conf:
INCOMPATIBLE_LICENSE = "FooLicense"

`bitbake foo`

Gives no warning, no error, builds and packages successfully, because
INCOMPATIBLE_LICENSE is basically empty since FooLicense is neither in
SPDXLICENSEMAP nor in SRC_DISTRIBUTE_LICENSES.

Let's add the original licenses to the list returned by
expand_wildcard_licenses to be able to handle the aforementioned case.

INCOMPATIBLE_LICENSE = "FooLicense GPLv2 GPLv3+" used to "resolve" to
"GPLv2 GPLv3". It now resolves to "FooLicense GPLv2 GPLv3 GPLv3+" which
fixes the issue with custom licenses not being in SPDXLICENSEMAP or
SRC_DISTRIBUTE_LICENSES and thus being left out of the blacklisted
licenses.

Signed-off-by: Quentin Schulz <quentin.schulz at streamunlimited.com>
---
 meta/classes/license.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index ed91a4b4db..adca881c85 100644
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -268,7 +268,7 @@ def expand_wildcard_licenses(d, wildcard_licenses):
     wildcards from SPDXLICENSEMAP flags and SRC_DISTRIBUTE_LICENSES values.
     """
     import fnmatch
-    licenses = []
+    licenses = wildcard_licenses[:]
     spdxmapkeys = d.getVarFlags('SPDXLICENSEMAP').keys()
     for wld_lic in wildcard_licenses:
         spdxflags = fnmatch.filter(spdxmapkeys, wld_lic)
-- 
2.17.1