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}'.format(sdk=sdk, arch=arch)) 56 if not os.path.exists(arch_path): 57 arch_flags.append( 58 ' {arch}: {{ enabled: false, }},'.format(arch=arch)) 59 60 default.append('cc_defaults {{\n' 61 ' name: "ndk_{version}_defaults",'.format(version=sdk)) 62 if len(arch_flags) > 0: 63 default.append(' arch: {{\n{arch_flags}\n' 64 ' }},'.format(arch_flags='\n'.join(arch_flags))) 65 default.append('}') 66 defaults.append('\n'.join(default)) 67 return defaults 68 69 70 def get_prebuilts(names): 71 prebuilts_path = local_path('current/platforms') 72 prebuilts = find(prebuilts_path, names) 73 prebuilts = [p for p in prebuilts if 'arch-arm/' in p] 74 prebuilts.sort(key=sdk_version_from_path) 75 return prebuilts 76 77 78 def gen_lib_prebuilt(prebuilt, name, version): 79 platform = os.path.join('current', 'platforms', 80 prebuilt.partition('/')[0]) 81 includes = os.path.join(platform, 'arch-{}/usr/include') 82 arch_flags = [] 83 for arch in ['arm', 'arm64', 'mips', 'mips64', 'x86', 'x86_64']: 84 inc = includes.format(arch) 85 if os.path.exists(inc): 86 arch_flags.append( 87 ' {arch}: {{\n' 88 ' export_include_dirs: ["{includes}"],\n' 89 ' }},'.format(arch=arch, includes=inc)) 90 return ('ndk_prebuilt_library {{\n' 91 ' name: "ndk_{name}.{version}",\n' 92 ' defaults: ["ndk_{version}_defaults"],\n' 93 ' sdk_version: "{version}",\n' 94 ' arch: {{\n{arch_flags}\n' 95 ' }},\n' 96 '}}'.format(name=name, version=version, 97 arch_flags='\n'.join(arch_flags))) 98 99 100 def gen_crt_prebuilt(_, name, version): 101 return ('ndk_prebuilt_object {{\n' 102 ' name: "ndk_{name}.{version}",\n' 103 ' defaults: ["ndk_{version}_defaults"],\n' 104 ' sdk_version: "{version}",\n' 105 '}}'.format(name=name, version=version)) 106 107 108 def gen_prebuilts(fn, names): 109 prebuilts = [] 110 for prebuilt in get_prebuilts(names): 111 name = os.path.splitext(os.path.basename(prebuilt))[0] 112 version = sdk_version_from_path(prebuilt) 113 prebuilts.append(fn(prebuilt, name, version)) 114 return prebuilts 115 116 117 def main(): 118 blueprints = gen_defaults() 119 blueprints.extend(gen_prebuilts(gen_lib_prebuilt, ('libc.so', 'libm.so'))) 120 blueprints.extend(gen_prebuilts(gen_crt_prebuilt, ( 121 'crtbegin_so.o', 122 'crtend_so.o', 123 'crtbegin_dynamic.o', 124 'crtbegin_static.o', 125 'crtend_android.o'))) 126 127 with open(local_path('Android.bp'), 'w') as f: 128 f.write('// THIS FILE IS AUTOGENERATED BY gen-blueprints.py\n') 129 f.write('// DO NOT EDIT\n') 130 f.write('\n') 131 f.write('\n\n'.join(blueprints)) 132 f.write('\n\n') 133 f.write('build = ["stl.bp"]\n') 134 135 136 if __name__ == '__main__': 137 main() 138
