55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
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#!/usr/bin/env python3
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# compile_commands.json generator
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# Copyright (C) 2024 Intel Corporation
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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import os
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import sys
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import glob
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import json
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import argparse
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parser = argparse.ArgumentParser(description='Read each of the build directories that are given and generate '
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'a compile_commands.json file. If a source file is found multiple times, '
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'then the compile flags from the last build directory will be used.')
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parser.add_argument('-o', '--output', default='compile_commands.json', type=str,
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help="Output file to generate")
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parser.add_argument('builddirs', nargs='+', type=str, metavar="builddir",
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help='Build directories to search')
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args = parser.parse_args()
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files = {}
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for builddir in args.builddirs:
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for cmd_file in glob.glob('**/*.o.cmd', root_dir=builddir, recursive=True):
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with open(os.path.join(builddir, cmd_file), encoding='ascii') as f:
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base_dir, cmd = f.readline().split(':', 1)
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src_file = cmd.rsplit(maxsplit=1)[1]
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src_file = os.path.abspath(os.path.join(base_dir, src_file))
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files[src_file] = {
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'command': cmd.strip(),
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'directory': base_dir,
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'file': src_file,
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}
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flist = json.dumps(sorted(list(files.values()), key=lambda k: k['file']), indent=2, sort_keys=True)
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try:
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# Avoid writing the file if it did not change, first read original
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with open(args.output, 'rt', encoding='UTF-8') as f:
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orig = []
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while data := f.read():
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orig.append(data)
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orig = ''.join(orig)
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except OSError:
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orig = ''
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# And only write if something changed
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if orig != flist:
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with open(args.output, 'wt', encoding='UTF-8') as f:
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f.write(flist)
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