[PATCH] recipetool/create: Scan for SDPX-License-Identifier

[Saul Wold <saul.wold@windriver.com>]

When a file can not be identified by checksum and they contain an SPDX
License-Identifier tag, use it as the found license.

[YOCTO #14529]

Tested with LICENSE files that contain 1 or more SPDX-License-Identifier tags

Signed-off-by: Saul Wold <saul.wold@windriver.com>
---
 scripts/lib/recipetool/create.py | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/scripts/lib/recipetool/create.py b/scripts/lib/recipetool/create.py
index 507a230511..9149c2d94f 100644
--- a/scripts/lib/recipetool/create.py
+++ b/scripts/lib/recipetool/create.py
@@ -1221,14 +1221,20 @@ def guess_license(srctree, d):
     for licfile in sorted(licfiles):
         md5value = bb.utils.md5_file(licfile)
         license = md5sums.get(md5value, None)
+        license_list = []
         if not license:
             license, crunched_md5, lictext = crunch_license(licfile)
             if lictext and not license:
-                license = 'Unknown'
-                logger.info("Please add the following line for '%s' to a 'lib/recipetool/licenses.csv' " \
-                    "and replace `Unknown` with the license:\n" \
-                    "%s,Unknown" % (os.path.relpath(licfile, srctree), md5value))
-        if license:
+                spdx_re = re.compile('SPDX-License-Identifier:\s+([-A-Za-z\d. ]+)[ |\n|\r\n]*?')
+                license_list = re.findall(spdx_re, "\n".join(lictext))
+                if not license_list:
+                    license_list.append('Unknown')
+                    logger.info("Please add the following line for '%s' to a 'lib/recipetool/licenses.csv' " \
+                        "and replace `Unknown` with the license:\n" \
+                        "%s,Unknown" % (os.path.relpath(licfile, srctree), md5value))
+        else:
+            license_list.append(license)
+        for license in license_list:
             licenses.append((license, os.path.relpath(licfile, srctree), md5value))
 
     # FIXME should we grab at least one source file with a license header and add that too?
-- 
2.25.1