blob: 3f11a2fa74bd85924c07a35ec39eea9f8d349c2c [file] [log] [blame]
#!/usr/bin/env python3
# Copyright (C) 2019 The Android Open Source Project
#
# 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.
# This writes headers for build flags. See the gen_buildflags target in
# /gn/BUILD.gn for usage.
#
# The parameters are passed in a response file so we don't have to worry
# about command line lengths. The name of the response file is passed on the
# command line.
#
# The format of the response file is:
# [--flags <list of one or more flag values>]
import argparse
import os
import shlex
import sys
COPYRIGHT_HEADER = '''/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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.
*/
'''
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--rsp', help='Input response file containing the flags.')
parser.add_argument('--out', help='Output path of the generated header file.')
args = parser.parse_args()
flags = []
with open(args.rsp, 'r') as def_file:
marker_seen = False
for flag in shlex.split(def_file.read()):
if not marker_seen:
marker_seen = flag == '--flags'
continue
key, value = flag.split('=', 1)
value = '1' if value == 'true' else '0' if value == 'false' else value
flags.append((key, value))
guard = '%s_' % args.out.upper()
guard = guard.replace('/', '_').replace('\\', '_').replace('.', '_') \
.replace('-', '_')
lines = []
lines.append('// Generated by %s' % os.path.basename(__file__))
lines.append('')
lines.append('// fix_include_guards: off')
lines.append('#ifndef %s' % guard)
lines.append('#define %s' % guard)
lines.append('')
lines.append('// clang-format off')
for kv in flags:
lines.append('#define PERFETTO_BUILDFLAG_DEFINE_%s() (%s)' % kv)
lines.append('')
lines.append('// clang-format on')
lines.append('#endif // %s' % guard)
lines.append('')
with open(args.out, 'w', newline='\n') as out:
out.write(COPYRIGHT_HEADER)
out.write('\n'.join(lines))
if __name__ == '__main__':
sys.exit(main())