base/license: Rework INCOMPATIBLE_LICENSE variable handling

This re-writes the INCOMPATIBLE_LICENSE checking code to replace
the WHITELIST_<lic> with
INCOMPATIBLE_LICENSE_EXCEPTIONS = '<pkg>:<lic> <pkg>:<lic> ...'

This initial change leaves most of the code structure in place,
but the code in base.bbclass needs to be re-written to make
the check more consistent around packages (PKGS) and not recipe
names (PN). This also is taking into account the changes for SPDX
licenses.

The aim is to provide a mode consistent variable where the variable
name is known and can easily be queried.

Signed-off-by: Saul Wold <saul.wold@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/meta/lib/oe/license.py b/meta/lib/oe/license.py
index 8955cbdeb2..29412dfe46 100644
--- a/meta/lib/oe/license.py
+++ b/meta/lib/oe/license.py
@@ -242,3 +242,8 @@ def list_licenses(licensestr):
     except SyntaxError as exc:
         raise LicenseSyntaxError(licensestr, exc)
     return visitor.licenses
+
+def apply_pkg_license_exception(pkg, bad_licenses, exceptions):
+    """Return remaining bad licenses after removing any package exceptions"""
+
+    return [lic for lic in bad_licenses if pkg + ':' + lic not in exceptions]