1 #!/usr/bin/env python 2 # 3 # Copyright 2015 Google Inc. All rights reserved. 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 import os 18 19 20 def local_path(path): 21 return os.path.normpath(os.path.join(os.path.dirname(__file__), path)) 22 23 24 def find(path, names): 25 found = [] 26 for root, _, files in os.walk(path): 27 for file_name in sorted(files): 28 if file_name in names: 29 abspath = os.path.abspath(os.path.join(root, file_name)) 30 rel_to_root = abspath.replace(os.path.abspath(path), '') 31 found.append(rel_to_root[1:]) # strip leading / 32 return found 33 34 35 def sdk_version_from_path(path): 36 return int(path.split('/')[0].split('-')[1]) 37 38 39 def sdk_versions(): 40 versions = [] 41 for sdk in os.listdir(local_path('current/platforms')): 42 if sdk.startswith('android-'): 43 versions.append(sdk_version_from_path(sdk)) 44 return sorted(versions) 45 46 47 def gen_defaults(): 48 defaults = [] 49 for sdk in sdk_versions(): 50 default = [] 51 arch_flags = [] 52 53 for arch in ['arm', 'arm64', 'mips', 'mips64', 'x86', 'x86_64']: 54 arch_path = local_path( 55 'current/platforms/android-{sdk}/arch-{arch}/usr/include'.format(sdk=sdk, arch=arch)) 56 if os.path.exists(arch_path): 57 arch_flags.append( 58 ' {arch}: {{\n' 59 ' export_include_dirs: ["{includes}"],\n' 60 ' }},'.format(arch=arch, includes=arch_path)) 61 62 default.append('cc_defaults {{\n' 63 ' name: "ndk_{version}_defaults",\n' 64 ' sdk_version: "{version}",'.format(version=sdk)) 65 if len(arch_flags) > 0: 66 default.append(' arch: {{\n{arch_flags}\n' 67 ' }},'.format(arch_flags='\n'.join(arch_flags))) 68 default.append('}') 69 defaults.append('\n'.join(default)) 70 return defaults 71 72 73 def get_prebuilts(names): 74 prebuilts_path = local_path('current/platforms') 75 prebuilts = find(prebuilts_path, names) 76 prebuilts = [p for p in prebuilts if 'arch-arm/' in p] 77 prebuilts.sort(key=sdk_version_from_path) 78 return prebuilts 79 80 81 def gen_lib_prebuilt(prebuilt, name, version): 82 return ('ndk_prebuilt_library {{\n' 83 ' name: "{name}.ndk.{version}",\n' 84 ' defaults: ["ndk_{version}_defaults"],\n' 85 '}}'.format(name=name, version=version)) 86 87 88 def gen_crt_prebuilt(_, name, version): 89 return ('ndk_prebuilt_object {{\n' 90 ' name: "ndk_{name}.{version}",\n' 91 ' sdk_version: "{version}",\n' 92 '}}'.format(name=name, version=version)) 93 94 95 def gen_prebuilts(fn, names): 96 prebuilts = [] 97 for prebuilt in get_prebuilts(names): 98 name = os.path.splitext(os.path.basename(prebuilt))[0] 99 version = sdk_version_from_path(prebuilt) 100 if version < 9: 101 # We don't support anything before Gingerbread any more. 102 continue 103 prebuilts.append(fn(prebuilt, name, version)) 104 return prebuilts 105 106 107 def main(): 108 blueprints = gen_defaults() 109 blueprints.extend(gen_prebuilts(gen_crt_prebuilt, ( 110 'crtbegin_so.o', 111 'crtend_so.o', 112 'crtbegin_dynamic.o', 113 'crtbegin_static.o', 114 'crtend_android.o'))) 115 116 with open(local_path('Android.bp'), 'w') as f: 117 f.write('// THIS FILE IS AUTOGENERATED BY gen-blueprints.py\n') 118 f.write('// DO NOT EDIT\n') 119 f.write('\n') 120 f.write('\n\n'.join(blueprints)) 121 f.write('\n\n') 122 f.write('build = ["stl.bp"]\n') 123 124 125 if __name__ == '__main__': 126 main() 127
