| # pylint: disable=g-bad-file-header | |
| # Copyright 2016 The Bazel Authors. All rights reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| """Creates symbolic links for .o files with hashcode. | |
| This script reads the file list containing the input files, creates symbolic | |
| links with a path-hash appended to their original name (foo.o becomes | |
| foo_{md5sum}.o), then saves the list of symbolic links to another file. | |
| This is to circumvent a bug in the original libtool that arises when two input | |
| files have the same base name (even if they are in different directories). | |
| """ | |
| import hashlib | |
| import os | |
| import sys | |
| def main(): | |
| obj_file_list = open(sys.argv[1]) | |
| hashed_obj_file_list = open(sys.argv[2], 'w') | |
| for line in obj_file_list: | |
| obj_file_path = line.rstrip('\n') | |
| hashed_obj_file_path = '%s_%s.o' % ( | |
| os.path.splitext(obj_file_path)[0], | |
| hashlib.md5(obj_file_path).hexdigest()) | |
| hashed_obj_file_list.write(hashed_obj_file_path + '\n') | |
| # Create symlink only if the symlink doesn't exist. | |
| if not os.path.exists(hashed_obj_file_path): | |
| os.symlink(os.path.basename(obj_file_path), hashed_obj_file_path) | |
| hashed_obj_file_list.close() | |
| if __name__ == '__main__': | |
| main() |