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#!/usr/bin/env python3
# Copyright (c) 2013-2019 GitHub Inc.
# Copyright 2019 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script reads the configurations of GN and outputs a config.gypi file that
# will be used to populate process.config.variables.
import argparse
import json
import re
import os
import subprocess
import sys
sys.path.append(os.path.dirname(__file__))
import getnapibuildversion
# Regex used for parsing results of "gn args".
GN_RE = re.compile(r'(\w+)\s+=\s+(.*?)$', re.MULTILINE)
GN = 'gn.bat' if sys.platform == 'win32' else 'gn'
def bool_to_number(v):
return 1 if v else 0
def bool_string_to_number(v):
return bool_to_number(v == 'true')
def get_gn_config(out_dir):
# Read args from GN configurations.
gn_args = subprocess.check_output(
[GN, 'args', '--list', '--short', '-C', out_dir])
config = dict(re.findall(GN_RE, gn_args.decode()))
# Get napi_build_version from Node, which is not part of GN args.
config['napi_build_version'] = getnapibuildversion.get_napi_version()
return config
def get_v8_config(out_dir, node_gn_path):
with open(os.path.join(out_dir, 'v8_features.json')) as f:
v8_config = json.load(f)
for key, value in v8_config.items():
if isinstance(value, bool):
v8_config[key] = bool_to_number(value)
return v8_config
def translate_config(out_dir, config, v8_config):
config_gypi = {
'target_defaults': {
'default_configuration':
'Debug' if config['is_debug'] == 'true' else 'Release',
},
'variables': {
'asan': bool_string_to_number(config['is_asan']),
'clang': bool_to_number(config['is_clang']),
'enable_lto': config['use_thin_lto'],
'is_debug': bool_string_to_number(config['is_debug']),
'llvm_version': 13,
'napi_build_version': config['napi_build_version'],
'node_builtin_shareable_builtins':
eval(config['node_builtin_shareable_builtins']),
'node_module_version': int(config['node_module_version']),
'node_use_openssl': config['node_use_openssl'],
'node_use_amaro': config['node_use_amaro'],
'node_use_node_code_cache': config['node_use_node_code_cache'],
'node_use_node_snapshot': config['node_use_node_snapshot'],
'v8_enable_inspector': # this is actually a node misnomer
bool_string_to_number(config['node_enable_inspector']),
'shlib_suffix': 'dylib' if sys.platform == 'darwin' else 'so',
'tsan': bool_string_to_number(config['is_tsan']),
# TODO(zcbenz): Shared components are not supported in GN config yet.
'node_shared': 'false',
'node_shared_brotli': 'false',
'node_shared_cares': 'false',
'node_shared_http_parser': 'false',
'node_shared_libuv': 'false',
'node_shared_nghttp2': 'false',
'node_shared_nghttp3': 'false',
'node_shared_ngtcp2': 'false',
'node_shared_openssl': 'false',
'node_shared_sqlite': 'false',
'node_shared_zlib': 'false',
}
}
config_gypi['variables'].update(v8_config)
return config_gypi
def main():
parser = argparse.ArgumentParser(
description='Generate config.gypi file from GN configurations')
parser.add_argument('target', help='path to generated config.gypi file')
parser.add_argument('--out-dir', help='path to the output directory',
default='out/Release')
parser.add_argument('--node-gn-path', help='path of the node target in GN',
default='//node')
parser.add_argument('--dep-file', help='path to an optional dep file',
default=None)
args, unknown_args = parser.parse_known_args()
config = get_gn_config(args.out_dir)
v8_config = get_v8_config(args.out_dir, args.node_gn_path)
# Write output.
with open(args.target, 'w') as f:
f.write(repr(translate_config(args.out_dir, config, v8_config)))
# Write depfile. Force regenerating config.gypi when GN configs change.
if args.dep_file:
with open(args.dep_file, 'w') as f:
f.write('%s: %s '%(args.target, 'build.ninja'))
if __name__ == '__main__':
main()
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