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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.
"""Build all Chromium libfuzzer targets that have corresponding corpora.
* Example usage: build_all_fuzzers.py --output-dir OUTPUT_DIR
"""
import argparse
import coverage_consts
import logging
import subprocess
def _ParseCommandArguments():
"""Adds and parses relevant arguments for tool comands.
Returns:
A dictionary representing the arguments.
"""
arg_parser = argparse.ArgumentParser()
arg_parser.usage = __doc__
arg_parser.add_argument(
'--output-dir',
type=str,
help=('Directory where fuzzers are to be built. GN args are assumed to '
'have already been set.'))
args = arg_parser.parse_args()
return args
args = _ParseCommandArguments()
def try_build(total_fuzzer_target):
subprocess_cmd = ['autoninja', '-C', args.output_dir]
subprocess_cmd.extend(total_fuzzer_target)
logging.info("Build command: %s" % subprocess_cmd)
try:
subprocess.check_call(subprocess_cmd)
except:
logging.error("An error occured while building the fuzzers.")
exit
logging.info("Building all fuzzers")
total_fuzzer_target = []
for count, fuzzer_target in enumerate(coverage_consts.FUZZERS_WITH_CORPORA, 1):
total_fuzzer_target.append(fuzzer_target)
if count % 200 == 0:
# Autoninja throws a "path has too many components" error if you try to
# to build too many targets at once, so clear the buffer every 350 targets.
try_build(total_fuzzer_target)
total_fuzzer_target = []
if total_fuzzer_target:
try_build(total_fuzzer_target)
logging.info("Built all fuzzers")
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