| #!/usr/bin/env python |
| # |
| # Copyright 2018 Google Inc. |
| # |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Generate Android.bp for Skia from GN configuration. |
| |
| from __future__ import print_function |
| |
| import argparse |
| import json |
| import os |
| import pprint |
| import string |
| import subprocess |
| import tempfile |
| |
| parser = argparse.ArgumentParser(description='Process some cmdline flags.') |
| parser.add_argument('--gn', dest='gn_cmd', default='gn') |
| args = parser.parse_args() |
| |
| def GenerateJSONFromGN(gn_args): |
| gn_args = ' '.join(sorted('%s=%s' % (k,v) for (k,v) in iter(gn_args.items()))) |
| tmp = tempfile.mkdtemp() |
| subprocess.check_call([args.gn_cmd, 'gen', tmp, '--args=%s' % gn_args, |
| '--ide=json']) |
| return json.load(open(os.path.join(tmp, 'project.json'))) |
| |
| def _strip_slash(lst): |
| return {str(p.lstrip('/')) for p in lst} |
| |
| def GrabDependentValues(js, name, value_type, list_to_extend, exclude): |
| # Grab the values from other targets that $name depends on (e.g. optional |
| # Skia components, gms, tests, etc). |
| for dep in js['targets'][name]['deps']: |
| if 'third_party' in dep: |
| continue # We've handled all third-party DEPS as static or shared_libs. |
| if 'none' in dep: |
| continue # We'll handle all cpu-specific sources manually later. |
| if exclude and isinstance(exclude, str) and exclude == dep: |
| continue |
| if exclude and isinstance(exclude, list) and dep in exclude: |
| continue |
| |
| list_to_extend.update(_strip_slash(js['targets'][dep].get(value_type, []))) |
| GrabDependentValues(js, dep, value_type, list_to_extend, exclude) |
| |
| def CleanupCFlags(cflags): |
| # Only use the generated flags related to warnings. |
| cflags = {s for s in cflags if s.startswith('-W')} |
| # Add additional warning suppressions |
| # Some for third_party/vulkanmemoryallocator |
| # Some for Android's '-Wall -Werror' |
| cflags = cflags.union([ |
| "-Wno-implicit-fallthrough", |
| "-Wno-missing-field-initializers", |
| "-Wno-sign-conversion", |
| "-Wno-thread-safety-analysis", |
| "-Wno-unknown-warning-option", |
| "-Wno-unused-parameter", |
| "-Wno-unused-variable", |
| ]) |
| # Add the rest of the flags we want. |
| cflags = cflags.union([ |
| "-fvisibility=hidden", |
| "-D_FORTIFY_SOURCE=1", |
| "-DSKIA_DLL", |
| "-DSKIA_IMPLEMENTATION=1", |
| "-DATRACE_TAG=ATRACE_TAG_VIEW", |
| ]) |
| |
| # Android does not want -Weverything set, it blocks toolchain updates. |
| if "-Weverything" in cflags: |
| cflags.remove("-Weverything") |
| |
| # We need to undefine FORTIFY_SOURCE before we define it. Insert it at the |
| # beginning after sorting. |
| cflags = sorted(cflags) |
| cflags.insert(0, "-U_FORTIFY_SOURCE") |
| return cflags |
| |
| def CleanupCCFlags(cflags_cc): |
| # Android does not want -Weverything set, it blocks toolchain updates. |
| if "-Weverything" in cflags_cc: |
| cflags_cc.remove("-Weverything") |
| |
| # Only use the generated flags related to warnings. |
| return {s for s in cflags_cc if s.startswith('-W')} |
| |
| def _get_path_info(path, kind): |
| assert path == "../src" |
| assert kind == "abspath" |
| # While we want absolute paths in GN, relative paths work best here. |
| return "src" |
| |
| def GetArchSources(opts_file): |
| # For architecture specific files, it's easier to just read the same source |
| # that GN does (opts.gni) rather than re-run GN once for each architecture. |
| |
| # This .gni file we want to read is close enough to Python syntax |
| # that we can use execfile() if we supply definitions for GN builtins. |
| builtins = { 'get_path_info': _get_path_info } |
| defs = {} |
| with open(opts_file) as f: |
| code = compile(f.read(), opts_file, 'exec') |
| exec(code, builtins, defs) |
| |
| # Perform any string substitutions. |
| for arch in defs: |
| defs[arch] = [ p.replace('$_src', 'src') for p in defs[arch]] |
| |
| return defs |
| |
| def WriteUserConfig(userConfigPath, defines): |
| # Most defines go into SkUserConfig.h |
| defines.remove('NDEBUG') # Controlled by the Android build |
| defines.remove('SKIA_IMPLEMENTATION=1') # don't export this define. |
| if 'WIN32_LEAN_AND_MEAN' in defines: # Controlled by the Android build |
| defines.remove('WIN32_LEAN_AND_MEAN') |
| if '_HAS_EXCEPTIONS=0' in defines: # Controlled by the Android build |
| defines.remove('_HAS_EXCEPTIONS=0') |
| |
| #... and all the #defines we want to put in SkUserConfig.h. |
| with open(userConfigPath, 'w') as f: |
| print('// DO NOT MODIFY! This file is autogenerated by gn_to_bp.py.', file=f) |
| print('// If need to change a define, modify SkUserConfigManual.h', file=f) |
| print('#pragma once', file=f) |
| print('#include "SkUserConfigManual.h"', file=f) |
| |
| for define in sorted(defines): |
| print('', file=f) |
| print('#ifndef', define.split('=')[0], file=f) |
| print('#define', define.replace('=', ' ', 1), file=f) |
| print('#endif', file=f) |