[PATCH] license_image.bbclass: use canonical name for license files

["Vyacheslav Yurkov" <uvv.mail@gmail.com>]

From: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>

When copying license files to the image rootfs, i.e to
/usr/share/common-licenses, a canonical name of a license should be
used, otherwise duplicated files end up in common-licenses directory.

For example, GPL-2.0 license according to conf/license.conf can be
referenced in recipes as GPL-2, GPLv2, and GPLv2.0. If a license name is
used directly, we end up with three files in the rootfs with the same
content. If a canonical name used instead, then each license gets copied
only once.

Signed-off-by: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>
---
 meta/classes/license_image.bbclass | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/license_image.bbclass b/meta/classes/license_image.bbclass
index 702e9f9c55..119c8dfc86 100644
--- a/meta/classes/license_image.bbclass
+++ b/meta/classes/license_image.bbclass
@@ -125,7 +125,6 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
 
                 licenses = os.listdir(pkg_license_dir)
                 for lic in licenses:
-                    rootfs_license = os.path.join(rootfs_license_dir, lic)
                     pkg_license = os.path.join(pkg_license_dir, lic)
                     pkg_rootfs_license = os.path.join(pkg_rootfs_license_dir, lic)
 
@@ -144,6 +143,8 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
                                 bad_licenses) == False:
                             continue
 
+                        # Make sure we use only canonical name for the license file
+                        rootfs_license = os.path.join(rootfs_license_dir, "generic_%s" % generic_lic)
                         if not os.path.exists(rootfs_license):
                             oe.path.copyhardlink(pkg_license, rootfs_license)
 
-- 
2.25.1