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143 lines
4.0 KiB
Python
Executable File
143 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Writes dependency ordered list of native libraries.
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The list excludes any Android system libraries, as those are not bundled with
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the APK.
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This list of libraries is used for several steps of building an APK.
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In the component build, the --input-libraries only needs to be the top-level
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library (i.e. libcontent_shell_content_view). This will then use readelf to
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inspect the shared libraries and determine the full list of (non-system)
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libraries that should be included in the APK.
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"""
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# TODO(cjhopman): See if we can expose the list of library dependencies from
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# gyp, rather than calculating it ourselves.
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# http://crbug.com/225558
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import optparse
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import os
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import re
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import sys
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from util import build_utils
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_readelf = None
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_library_dirs = None
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_library_re = re.compile(
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'.*NEEDED.*Shared library: \[(?P<library_name>.+)\]')
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def SetReadelfPath(path):
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global _readelf
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_readelf = path
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def SetLibraryDirs(dirs):
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global _library_dirs
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_library_dirs = dirs
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def FullLibraryPath(library_name):
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assert _library_dirs is not None
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for directory in _library_dirs:
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path = '%s/%s' % (directory, library_name)
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if os.path.exists(path):
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return path
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return library_name
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def IsSystemLibrary(library_name):
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# If the library doesn't exist in the libraries directory, assume that it is
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# an Android system library.
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return not os.path.exists(FullLibraryPath(library_name))
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def CallReadElf(library_or_executable):
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assert _readelf is not None
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readelf_cmd = [_readelf,
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'-d',
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FullLibraryPath(library_or_executable)]
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return build_utils.CheckOutput(readelf_cmd)
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def GetDependencies(library_or_executable):
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elf = CallReadElf(library_or_executable)
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return set(_library_re.findall(elf))
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def GetNonSystemDependencies(library_name):
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all_deps = GetDependencies(library_name)
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return set((lib for lib in all_deps if not IsSystemLibrary(lib)))
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def GetSortedTransitiveDependencies(libraries):
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"""Returns all transitive library dependencies in dependency order."""
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return build_utils.GetSortedTransitiveDependencies(
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libraries, GetNonSystemDependencies)
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def GetSortedTransitiveDependenciesForBinaries(binaries):
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if binaries[0].endswith('.so'):
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libraries = [os.path.basename(lib) for lib in binaries]
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else:
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assert len(binaries) == 1
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all_deps = GetDependencies(binaries[0])
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libraries = [lib for lib in all_deps if not IsSystemLibrary(lib)]
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return GetSortedTransitiveDependencies(libraries)
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def main():
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parser = optparse.OptionParser()
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build_utils.AddDepfileOption(parser)
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parser.add_option('--input-libraries',
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help='A list of top-level input libraries.')
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parser.add_option('--libraries-dir',
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help='The directory which contains shared libraries.')
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parser.add_option('--readelf', help='Path to the readelf binary.')
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parser.add_option('--output', help='Path to the generated .json file.')
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parser.add_option('--stamp', help='Path to touch on success.')
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options, _ = parser.parse_args(build_utils.ExpandFileArgs(sys.argv[1:]))
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SetReadelfPath(options.readelf)
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SetLibraryDirs(options.libraries_dir.split(','))
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libraries = build_utils.ParseGnList(options.input_libraries)
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if len(libraries):
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libraries = GetSortedTransitiveDependenciesForBinaries(libraries)
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# Convert to "base" library names: e.g. libfoo.so -> foo
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java_libraries_list = (
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'{%s}' % ','.join(['"%s"' % s[3:-3] for s in libraries]))
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out_json = {
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'libraries': libraries,
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'lib_paths': [FullLibraryPath(l) for l in libraries],
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'java_libraries_list': java_libraries_list
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}
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build_utils.WriteJson(
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out_json,
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options.output,
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only_if_changed=True)
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if options.stamp:
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build_utils.Touch(options.stamp)
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if options.depfile:
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build_utils.WriteDepfile(options.depfile, options.output, libraries)
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if __name__ == '__main__':
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sys.exit(main())
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