| #!/usr/bin/env python |
| # |
| # Copyright (C) 2016 The Android Open Source Project |
| # |
| # 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. |
| # |
| """Clobbers all the per-API level headers with the current unified headers. |
| |
| This is just for testing purposes. Having unified headers isn't worth as much |
| if we're still shipping N copies of them :) |
| """ |
| from __future__ import absolute_import |
| from __future__ import print_function |
| |
| import logging |
| import os |
| import shutil |
| |
| |
| THIS_DIR = os.path.realpath(os.path.dirname(__file__)) |
| ANDROID_ROOT = os.path.dirname(os.path.dirname(THIS_DIR)) |
| |
| |
| ALL_ARCHITECTURES = ( |
| 'arm', |
| 'arm64', |
| 'mips', |
| 'mips64', |
| 'x86', |
| 'x86_64', |
| ) |
| |
| |
| def logger(): |
| """Return the main logger for this module.""" |
| return logging.getLogger(__name__) |
| |
| |
| def android_path(*args): |
| """Returns a full path from the base of the Android source tree.""" |
| return os.path.join(ANDROID_ROOT, *args) |
| |
| |
| def copy_directory_contents(src, dst): |
| """Copies the contents of a directory, merging with the destination. |
| |
| shutil.copytree requires that the destination does not exist. This function |
| behaves like `cp -r`. That is, it merges the source and destination |
| directories if appropriate. |
| """ |
| for root, dirs, files in os.walk(src): |
| subdir = os.path.relpath(root, src) |
| dst_dir = os.path.join(dst, subdir) |
| if not os.path.exists(dst_dir): |
| os.makedirs(dst_dir) |
| |
| # This makes sure we copy even empty directories. We don't actually |
| # need it, but for now it lets us diff between our result and the |
| # legacy tool. |
| for d in dirs: # pylint: disable=invalid-name |
| d_path = os.path.join(root, d) |
| if os.path.islink(d_path): |
| linkto = os.readlink(d_path) |
| dst_file = os.path.join(dst_dir, d) |
| logger().debug('Symlinking %s to %s', dst_file, linkto) |
| os.symlink(linkto, dst_file) |
| else: |
| new_dir = os.path.join(dst_dir, d) |
| if not os.path.exists(new_dir): |
| logger().debug('Making directory %s', new_dir) |
| os.makedirs(new_dir) |
| |
| for f in files: # pylint: disable=invalid-name |
| src_file = os.path.join(root, f) |
| if os.path.islink(src_file): |
| linkto = os.readlink(src_file) |
| dst_file = os.path.join(dst_dir, f) |
| logger().debug('Symlinking %s to %s', dst_file, linkto) |
| os.symlink(linkto, dst_file) |
| else: |
| logger().debug('Copying %s', src_file) |
| shutil.copy2(src_file, dst_dir) |
| |
| |
| def get_preserve_path(platform_dir): |
| """Returns the path used for preserving headers.""" |
| return os.path.join(platform_dir, 'preserve') |
| |
| |
| def preserve_headers(keep_list, platform_dir): |
| """Preserves a list of headers to be restored after the copy.""" |
| install_path = os.path.join(platform_dir, 'include') |
| preserve_root = get_preserve_path(platform_dir) |
| if os.path.exists(preserve_root): |
| shutil.rmtree(preserve_root) |
| for preserve in keep_list: |
| path = os.path.join(install_path, preserve) |
| if os.path.isdir(path): |
| shutil.copytree(path, os.path.join(preserve_root, preserve)) |
| elif os.path.isfile(path): |
| shutil.copy2(path, preserve_root) |
| |
| |
| def restore_headers(keep_list, platform_dir): |
| """Restores headers preserved by preserve_headers.""" |
| install_path = os.path.join(platform_dir, 'include') |
| preserve_root = get_preserve_path(platform_dir) |
| for preserve in keep_list: |
| path = os.path.join(preserve_root, preserve) |
| if os.path.isdir(path): |
| # Bionic does have include/android, so we need to merge directories |
| # here. |
| copy_directory_contents( |
| path, os.path.join(install_path, preserve)) |
| elif os.path.isfile(path): |
| shutil.copy2(path, install_path) |
| |
| |
| def platform_path_to_api_level(platform_path): |
| """Returns the API level for a platform path.""" |
| basename = os.path.split(platform_path)[-1] |
| # android-\d+ |
| return int(basename.split('-')[1]) |
| |
| |
| def fixup_api_level_h(platform_dir): |
| """Rewrites api-level.h for the correct platform.""" |
| api_level = platform_path_to_api_level(platform_dir) |
| header = os.path.join(platform_dir, 'include/android/api-level.h') |
| with open(header, 'w') as header_file: |
| header_file.write( |
| '#ifndef ANDROID_API_LEVEL_H\n' |
| '#define ANDROID_API_LEVEL_H\n' |
| '#ifndef __ANDROID_API__\n' |
| '#define __ANDROID_API__ {}\n' |
| '#endif /* __ANDROID_API__ */\n' |
| '#endif /* ANDROID_API_LEVEL_H */\n'.format(api_level)) |
| |
| |
| def copy_current_headers(platform_dir): |
| """Copies the unified headers into a per-API directory.""" |
| libc_path = android_path('bionic/libc') |
| install_path = os.path.join(platform_dir, 'include') |
| |
| # None of the platform APIs have unified headers yet. Copy those out of the |
| # way of the purge and copy them back in afterward. |
| keep_list = ( |
| 'EGL', |
| 'GLES', |
| 'GLES2', |
| 'GLES3', |
| 'KHR', |
| 'OMXAL', |
| 'SLES', |
| 'android', |
| 'camera', |
| 'jni.h', |
| 'media', |
| 'vulkan', |
| 'zlib.h', |
| 'zconf.h', |
| ) |
| preserve_headers(keep_list, platform_dir) |
| |
| if os.path.exists(install_path): |
| shutil.rmtree(install_path) |
| |
| shutil.copytree(os.path.join(libc_path, 'include'), install_path) |
| shutil.copytree(os.path.join(libc_path, 'kernel/uapi/linux'), |
| os.path.join(install_path, 'linux')) |
| shutil.copytree(os.path.join(libc_path, 'kernel/uapi/asm-generic'), |
| os.path.join(install_path, 'asm-generic')) |
| shutil.copy2(os.path.join(libc_path, 'NOTICE'), install_path) |
| |
| restore_headers(keep_list, platform_dir) |
| |
| if os.path.exists(get_preserve_path(platform_dir)): |
| shutil.rmtree(get_preserve_path(platform_dir)) |
| |
| fixup_api_level_h(platform_dir) |
| |
| api_level = platform_path_to_api_level(platform_dir) |
| for arch in ALL_ARCHITECTURES: |
| if arch in ('arm64', 'mips64', 'x86_64') and api_level < 21: |
| continue |
| |
| # For multilib architectures we need to copy the 32-bit headers into |
| # the 64-bit directory. For MIPS this is true of asm and machine, for |
| # Intel it's only for asm. |
| asm_arch = arch |
| machine_arch = arch |
| if arch == 'mips64': |
| asm_arch = 'mips' |
| machine_arch = 'mips' |
| elif arch == 'x86_64': |
| asm_arch = 'x86' |
| |
| arch_install_path = os.path.join( |
| platform_dir, 'arch-' + arch, 'include') |
| if os.path.exists(arch_install_path): |
| shutil.rmtree(arch_install_path) |
| |
| machine_path = os.path.join( |
| libc_path, 'arch-' + machine_arch, 'include/machine') |
| asm_path = os.path.join( |
| libc_path, 'kernel/uapi/asm-' + asm_arch, 'asm') |
| |
| if os.path.exists(arch_install_path): |
| shutil.rmtree(arch_install_path) |
| os.makedirs(arch_install_path) |
| |
| shutil.copytree( |
| machine_path, os.path.join(arch_install_path, 'machine')) |
| shutil.copytree(asm_path, os.path.join(arch_install_path, 'asm')) |
| |
| |
| def main(): |
| """Program entry point.""" |
| platforms_dir = os.path.join(THIS_DIR, 'platforms') |
| for platform_dir in os.listdir(platforms_dir): |
| path = os.path.join(platforms_dir, platform_dir) |
| if not os.path.isdir(path): |
| continue |
| if platform_dir == 'common': |
| # Just contains crtbrand. |
| continue |
| copy_current_headers(path) |
| |
| |
| if __name__ == '__main__': |
| main() |
