[OE-core] [PATCH V3 3/5] license.bbclass: skip license checking if the package contains no file

[Chen Qi]

If the package doesn't contain any file, then the license isn't relevant
as far as the final image is concerned. So we skip the license checking
in license_create_manifest if such case.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/classes/license.bbclass | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index 95e0121..73a0e97 100644
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -50,6 +50,7 @@ license_create_manifest() {
 		pkged_pv="$(sed -n 's/^PV: //p' ${filename})"
 		pkged_name="$(basename $(readlink ${filename}))"
 		pkged_lic="$(sed -n "/^LICENSE_${pkged_name}: /{ s/^LICENSE_${pkged_name}: //; p }" ${filename})"
+		pkged_size="$(sed -n "/^PKGSIZE_${pkged_name}: /{ s/^PKGSIZE_${pkged_name}: //; p }" ${filename})"
 		if [ -z "${pkged_lic}" ]; then
 			# fallback checking value of LICENSE
 			pkged_lic="$(sed -n "/^LICENSE: /{ s/^LICENSE: //; p }" ${filename})"
@@ -61,6 +62,13 @@ license_create_manifest() {
 		echo "LICENSE:" ${pkged_lic} >> ${LICENSE_MANIFEST}
 		echo "" >> ${LICENSE_MANIFEST}
 
+		# If the package doesn't contain any file, that is, its size is 0, the license
+		# isn't relevant as far as the final image is concerned. So doing license check
+		# doesn't make much sense, skip it.
+		if [ "$pkged_size" = "0" ]; then
+			continue
+		fi
+
 		lics="$(echo ${pkged_lic} | sed "s/[|&()*]/ /g" | sed "s/  */ /g" )"
 		for lic in ${lics}; do
 			# to reference a license file trim trailing + symbol
-- 
1.9.1