| # Copyright 2022 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from pathlib import Path |
| import os |
| from shutil import rmtree |
| import sys |
| import time |
| |
| # Import //build/images/elfinfo.py |
| sys.path.insert(0, os.path.dirname(__file__) + '/../../../../build/images') |
| import elfinfo |
| |
| |
| def try_link(binary: str, build_id_dir: Path): |
| info = elfinfo.get_elf_info(binary) |
| build_id = info.build_id |
| if info.stripped or not build_id or len(build_id) <= 2: |
| return |
| dest_dir = build_id_dir / build_id[:2] |
| dest_dir.mkdir(exist_ok=True) |
| dest = dest_dir / (build_id[2:] + '.debug') |
| if not dest.exists(): # When two source binaries resolves to the same. |
| os.link(binary, dest) |
| |
| |
| def main(): |
| assert len(sys.argv) == 5, "Incorrect number of arguments" |
| |
| unstripped_binaries_list_file = Path(sys.argv[1]) |
| build_id_dir = Path(sys.argv[2]) |
| depfile = Path(sys.argv[3]) |
| unstripped_libc = sys.argv[4] |
| |
| # Always rebuild the build-id directory for garbage collection, and os.link is fast. |
| if build_id_dir.exists(): |
| rmtree(build_id_dir) |
| |
| build_id_dir.mkdir(parents=True) |
| |
| depfile_content = str(build_id_dir) + ":" |
| with unstripped_binaries_list_file.open() as f: |
| for line in f: |
| binary = line.rstrip('\n') |
| if binary.startswith('host_'): |
| continue |
| depfile_content += " " + binary |
| try_link(binary, build_id_dir) |
| |
| depfile_content += " " + unstripped_libc |
| try_link(unstripped_libc, build_id_dir) |
| |
| depfile.write_text(depfile_content + '\n') |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
