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- import argparse
- from pathlib import Path
- import subprocess
- import os
- from typing import Sequence
- import sys
- import shutil
-
- BOOTSTRAP_PHASES = [
- 'bootstrap-p1',
- 'bootstrap-p2',
- ]
-
- HERE = Path(__file__).parent.absolute()
- PROJECT_ROOT = HERE.parent
- BUILD_DIR = PROJECT_ROOT / '_build'
- BOOTSTRAP_BASE_DIR = BUILD_DIR / '_bootstrap'
- PREBUILT_DIR = PROJECT_ROOT / '_prebuilt'
-
- EXE_SUFFIX = '.exe' if os.name == 'nt' else ''
-
-
- def _run_quiet(cmd, **kwargs) -> None:
- cmd = [str(s) for s in cmd]
- res = subprocess.run(
- cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs)
- if res.returncode != 0:
- print(f'Subprocess command {cmd} failed '
- f'[{res.returncode}]:\n{res.stdout.decode()}')
- raise subprocess.CalledProcessError(res.returncode, cmd)
-
-
- def _clone_bootstrap_phase(ph: str) -> Path:
- print(f'Clone revision: {ph}')
- bts_dir = BOOTSTRAP_BASE_DIR / ph
- if bts_dir.exists():
- shutil.rmtree(bts_dir)
- _run_quiet([
- 'git',
- 'clone',
- '--depth=1',
- f'--branch={ph}',
- f'file://{PROJECT_ROOT}',
- bts_dir,
- ])
- return bts_dir
-
-
- def _build_bootstrap_phase(ph: str, bts_dir: Path,
- args: argparse.Namespace) -> None:
- print(f'Build revision: {ph} [This may take a moment]')
- env = os.environ.copy()
- env['DDS_BOOTSTRAP_PREV_EXE'] = str(PREBUILT_DIR / 'dds')
- _run_quiet(
- [
- sys.executable,
- '-u',
- str(bts_dir / 'tools/build.py'),
- f'--cxx={args.cxx}',
- ],
- env=env,
- )
-
-
- def _pull_executable(bts_dir: Path) -> Path:
- prebuild_dir = (PROJECT_ROOT / '_prebuilt')
- prebuild_dir.mkdir(exist_ok=True)
- generated = list(bts_dir.glob(f'_build/dds{EXE_SUFFIX}'))
- assert len(generated) == 1, repr(generated)
- exe, = generated
- dest = prebuild_dir / exe.name
- if dest.exists():
- dest.unlink()
- exe.rename(dest)
- return dest
-
-
- def _run_boot_phase(phase: str, args: argparse.Namespace) -> Path:
- bts_dir = _clone_bootstrap_phase(phase)
- _build_bootstrap_phase(phase, bts_dir, args)
- return _pull_executable(bts_dir)
-
-
- def main(argv: Sequence[str]) -> int:
- parser = argparse.ArgumentParser()
- parser.add_argument(
- '--cxx', help='The C++ compiler to use for the build', required=True)
- args = parser.parse_args(argv)
- for idx, phase in enumerate(BOOTSTRAP_PHASES):
- print(f'Bootstrap phase [{idx+1}/{len(BOOTSTRAP_PHASES)}]')
- exe = _run_boot_phase(phase, args)
-
- print(f'A bootstrapped DDS executable has been generated: {exe}')
-
- return 0
-
-
- if __name__ == "__main__":
- sys.exit(main(sys.argv[1:]))
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