[nrf noup] Fix ram_report and rom_report

Stop filtering out gdwarf-4 when passing flags from Zephyr
to Matter's GN build system. Older pyelftools versions are
not able to parse DWARF5 format, so ram and rom report
would not be generated.

Signed-off-by: Damian Krolik <[email protected]>

config/nrfconnect/chip-module/make_gn_args.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+
+#
+#    Copyright (c) 2021 Project CHIP Authors
+#    All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+import argparse
+import re
+import sys
+
+GN_SPECIAL_CHARACTERS = r'(["$\\])'
+GN_CFLAG_EXCLUDES = [
+    '-fno-asynchronous-unwind-tables',
+    '-fno-common',
+    '-fno-defer-pop',
+    '-fno-reorder-functions',
+    '-ffunction-sections',
+    '-fdata-sections',
+    '-g',
+    '-g0',
+    '-g1',
+    '-g2',
+    '-g3',
+    '-O*',
+    '-W*',
+]
+
+
+def escape_strings(gn_args):
+    return [[key, re.sub(GN_SPECIAL_CHARACTERS, r'\\\1', value)] for key, value in gn_args]
+
+
+def write_gn_args(args):
+    if args.module:
+        sys.stdout.write('import("{}")\n'.format(args.module))
+
+    for key, value in args.arg:
+        sys.stdout.write('{} = {}\n'.format(key, value))
+
+    for key, value in args.arg_string:
+        sys.stdout.write('{} = "{}"\n'.format(key, value))
+
+    cflag_excludes = ', '.join(['"{}"'.format(exclude)
+                               for exclude in GN_CFLAG_EXCLUDES])
+
+    for key, value in args.arg_cflags:
+        sys.stdout.write('{} = filter_exclude(string_split("{}"), [{}])\n'.format(
+            key, value, cflag_excludes))
+
+
+def main():
+    parser = argparse.ArgumentParser(fromfile_prefix_chars='@')
+    parser.add_argument('--module', action='store')
+    parser.add_argument('--arg', action='append', nargs=2, default=[])
+    parser.add_argument('--arg-string', action='append', nargs=2, default=[])
+    parser.add_argument('--arg-cflags', action='append', nargs=2, default=[])
+    args = parser.parse_args()
+    args.arg_string = escape_strings(args.arg_string)
+    args.arg_cflags = escape_strings(args.arg_cflags)
+    write_gn_args(args)
+
+
+if __name__ == "__main__":
+    main()