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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.
'''Builds the gnrt tool and runs it to generate stdlib GN rules.
'''
import argparse
import os
import sys
import tempfile
# Get variables and helpers from Clang update script.
sys.path.append(
os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'clang',
'scripts'))
from build import (RunCommand)
from update import (CHROMIUM_DIR)
sys.path.append(
os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'crates'))
from run_gnrt import RunGnrt
from build_bindgen import (EXE)
from build_rust import (RustTargetTriple, RUST_SRC_DIR, RUST_BETA_SYSROOT_DIR,
InstallRustBetaSysroot)
from update_rust import (RUST_REVISION)
BUILD_RUST_PY_PATH = os.path.join(CHROMIUM_DIR, 'tools', 'rust',
'build_rust.py')
def main():
parser = argparse.ArgumentParser(
description='build and run gnrt for stdlib')
parser.add_argument(
'--skip-prep',
action='store_true',
help='do not fetch dependencies, assuming a previous successful run.')
parser.add_argument(
'--out-dir',
help='cache artifacts in specified directory instead of a temp dir.')
args = parser.parse_args()
if not args.skip_prep:
# This step gets the dependencies in the Rust git checkout.
RunCommand([BUILD_RUST_PY_PATH, '--sync-for-gnrt'])
# Get a Rust sysroot to build gnrt with.
InstallRustBetaSysroot(RUST_REVISION, [RustTargetTriple()])
# Build and run gnrt to update the stdlib GN rules.
if args.out_dir:
run_gnrt(RUST_BETA_SYSROOT_DIR, args.out_dir)
else:
with tempfile.TemporaryDirectory() as out_dir:
run_gnrt(RUST_BETA_SYSROOT_DIR, out_dir)
def run_gnrt(sysroot_dir, out_dir):
gnrt_args = [
'gen', f'--for-std={os.path.relpath(RUST_SRC_DIR, CHROMIUM_DIR)}'
]
RunGnrt(sysroot_dir, out_dir, gnrt_args)
if __name__ == '__main__':
sys.exit(main())
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