[poky-contrib][RFC PATCH 1/5] package: Remove false positive lic warnings

["Meh Mbeh Ida Delphine" <idadelm@gmail.com>]

The recipe LICENSE strings are split into their individual license and the canonicalised to easy enable matching with licenses of sources.
License strings with "or-later" are replaced with "+" before comparism.
The warnings showup if and only if licenses in the sources don't match LICENSE value of the recipe.
Signed-off-by: Ida Delphine <idadelm@gmail.com>
---
 meta/classes/package.bbclass | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index ab96f141ae..c3259146b6 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -1545,6 +1545,7 @@ PKGDESTWORK = "${WORKDIR}/pkgdata"
 PKGDATA_VARS = "PN PE PV PR PKGE PKGV PKGR LICENSE DESCRIPTION SUMMARY RDEPENDS RPROVIDES RRECOMMENDS RSUGGESTS RREPLACES RCONFLICTS SECTION PKG ALLOW_EMPTY FILES CONFFILES FILES_INFO PACKAGE_ADD_METADATA pkg_postinst pkg_postrm pkg_preinst pkg_prerm"
 
 python emit_pkgdata() {
+    import oe.license
     from glob import glob
     import json
     import subprocess
@@ -1762,7 +1763,21 @@ fi
             lic = d.getVar('LICENSE_%s' % (pkg))
             if not lic:
                 lic = d.getVar('LICENSE')
-            bb.warn("License for package %s is %s vs %s" % (pkg, computedpkglics[pkg], lic))
+
+            # Splits the LICENSE values and canonicalise each license
+            # in the set of split license(s)    
+            split_lic = oe.license.list_licenses(lic)
+            spdx_lic = set([canonical_license(d, l) for l in split_lic])
+            if computedpkglics[pkg]:
+                computedpkglicsperpkg = set([])
+                for l in computedpkglics[pkg]:
+                    if l.endswith('-or-later'):
+                        lic_ = l.replace('-or-later', '+')
+                        computedpkglicsperpkg.add(lic_)
+                    else:
+                        computedpkglicsperpkg.add(l)
+            if spdx_lic - computedpkglicsperpkg:
+                bb.warn("License for package %s is %s vs %s" % (pkg, computedpkglicsperpkg, spdx_lic))
 }
 emit_pkgdata[dirs] = "${PKGDESTWORK}/runtime ${PKGDESTWORK}/runtime-reverse ${PKGDESTWORK}/runtime-rprovides"
 
-- 
2.25.1