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#!/usr/bin/env python3
# Copyright 2023 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Wrapper around clang for nocompile tests.
The actual test functionality is largely implemented by clang itself. The
wrapper script exists for two purposes:
- generating an empty object file, so that nocompile GN targets can masquerade
as source sets.
- generating a depfile on Windows. Normally, ninja parses /showIncludes output;
unfortunately, this only works for compiler tools, not customm GN actions.
"""
import argparse
import pathlib
import os
import subprocess
import sys
sys.path.append(
os.path.join(os.path.dirname(__file__), os.pardir, os.pardir, 'build'))
import action_helpers
def main():
parser = argparse.ArgumentParser(prog=sys.argv[0])
parser.add_argument('--generate-depfile', action='store_true')
parser.add_argument('compiler')
parser.add_argument('source_path')
parser.add_argument('obj_path')
parser.add_argument('depfile_path')
parser.add_argument('compiler_options', nargs=argparse.REMAINDER)
args = parser.parse_args()
compiler_args = [
args.compiler,
]
compiler_args += args.compiler_options
compiler_args += [
'-c',
args.source_path,
]
result = subprocess.run(compiler_args, stdout=subprocess.PIPE)
if result.returncode == 0:
pathlib.Path(args.obj_path).touch()
if args.generate_depfile:
# /showIncludes format:
# Note: including file: third_party/libc++/src/include/stdio.h
# Note: including file: third_party/libc++/src/include/__config
# Note: including file: buildtools/third_party/libc++/__config_site
# Note: including file: third_party/libc++/src/include/stdint.h
# The prefix is locale-sensitive, but in practice, everything in the
# Chrome build assumes the prefix is fixed.
INCLUDE_PREFIX = 'Note: including file: '
includes = map(
lambda x: os.path.relpath(x[len(INCLUDE_PREFIX):].strip()),
filter(
lambda x: x.startswith(INCLUDE_PREFIX),
result.stdout.decode('utf-8').splitlines(),
),
)
action_helpers.write_depfile(args.depfile_path, args.obj_path, includes)
sys.exit(result.returncode)
if __name__ == '__main__':
main()
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