1 # Copyright 2016 gRPC authors.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 from distutils import cygwinccompiler
16 from distutils import extension
17 from distutils import util
30 from setuptools.command import build_ext
33 from subprocess import PIPE
35 # TODO(atash) add flag to disable Cython use
37 _PACKAGE_PATH = os.path.realpath(os.path.dirname(__file__))
38 _README_PATH = os.path.join(_PACKAGE_PATH, 'README.rst')
40 os.chdir(os.path.dirname(os.path.abspath(__file__)))
41 sys.path.insert(0, os.path.abspath('.'))
43 import _parallel_compile_patch
44 import protoc_lib_deps
47 _parallel_compile_patch.monkeypatch_compile_maybe()
50 'Development Status :: 5 - Production/Stable',
51 'Programming Language :: Python',
52 'Programming Language :: Python :: 2',
53 'Programming Language :: Python :: 2.7',
54 'Programming Language :: Python :: 3',
55 'Programming Language :: Python :: 3.4',
56 'Programming Language :: Python :: 3.5',
57 'Programming Language :: Python :: 3.6',
58 'License :: OSI Approved :: Apache Software License',
61 PY3 = sys.version_info.major == 3
63 # Environment variable to determine whether or not the Cython extension should
64 # *use* Cython or use the generated C files. Note that this requires the C files
65 # to have been generated by building first *with* Cython support.
66 BUILD_WITH_CYTHON = os.environ.get('GRPC_PYTHON_BUILD_WITH_CYTHON', False)
69 def check_linker_need_libatomic():
70 """Test if linker on system needs libatomic."""
71 code_test = (b'#include <atomic>\n' +
72 b'int main() { return std::atomic<int64_t>{}; }')
73 cxx = os.environ.get('CXX', 'c++')
74 cpp_test = subprocess.Popen([cxx, '-x', 'c++', '-std=c++11', '-'],
78 cpp_test.communicate(input=code_test)
79 if cpp_test.returncode == 0:
81 # Double-check to see if -latomic actually can solve the problem.
82 # https://github.com/grpc/grpc/issues/22491
83 cpp_test = subprocess.Popen(
84 [cxx, '-x', 'c++', '-std=c++11', '-latomic', '-'],
88 cpp_test.communicate(input=code_test)
89 return cpp_test.returncode == 0
92 # There are some situations (like on Windows) where CC, CFLAGS, and LDFLAGS are
93 # entirely ignored/dropped/forgotten by distutils and its Cygwin/MinGW support.
94 # We use these environment variables to thus get around that without locking
95 # ourselves in w.r.t. the multitude of operating systems this ought to build on.
96 # We can also use these variables as a way to inject environment-specific
97 # compiler/linker flags. We assume GCC-like compilers and/or MinGW as a
99 EXTRA_ENV_COMPILE_ARGS = os.environ.get('GRPC_PYTHON_CFLAGS', None)
100 EXTRA_ENV_LINK_ARGS = os.environ.get('GRPC_PYTHON_LDFLAGS', None)
101 if EXTRA_ENV_COMPILE_ARGS is None:
102 EXTRA_ENV_COMPILE_ARGS = '-std=c++11'
103 if 'win32' in sys.platform:
104 if sys.version_info < (3, 5):
105 # We use define flags here and don't directly add to DEFINE_MACROS below to
106 # ensure that the expert user/builder has a way of turning it off (via the
107 # envvars) without adding yet more GRPC-specific envvars.
108 # See https://sourceforge.net/p/mingw-w64/bugs/363/
109 if '32' in platform.architecture()[0]:
110 EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime32 -D_timeb=__timeb32 -D_ftime_s=_ftime32_s -D_hypot=hypot'
112 EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime64 -D_timeb=__timeb64 -D_hypot=hypot'
114 # We need to statically link the C++ Runtime, only the C runtime is
115 # available dynamically
116 EXTRA_ENV_COMPILE_ARGS += ' /MT'
117 elif "linux" in sys.platform or "darwin" in sys.platform:
118 EXTRA_ENV_COMPILE_ARGS += ' -fno-wrapv -frtti'
119 if EXTRA_ENV_LINK_ARGS is None:
120 EXTRA_ENV_LINK_ARGS = ''
121 if "linux" in sys.platform or "darwin" in sys.platform:
122 EXTRA_ENV_LINK_ARGS += ' -lpthread'
123 if check_linker_need_libatomic():
124 EXTRA_ENV_LINK_ARGS += ' -latomic'
125 elif "win32" in sys.platform and sys.version_info < (3, 5):
126 msvcr = cygwinccompiler.get_msvcr()[0]
127 EXTRA_ENV_LINK_ARGS += (
128 ' -static-libgcc -static-libstdc++ -mcrtdll={msvcr}'
129 ' -static -lshlwapi'.format(msvcr=msvcr))
131 EXTRA_COMPILE_ARGS = shlex.split(EXTRA_ENV_COMPILE_ARGS)
132 EXTRA_LINK_ARGS = shlex.split(EXTRA_ENV_LINK_ARGS)
134 CC_FILES = [os.path.normpath(cc_file) for cc_file in protoc_lib_deps.CC_FILES]
136 os.path.normpath(proto_file) for proto_file in protoc_lib_deps.PROTO_FILES
138 CC_INCLUDE = os.path.normpath(protoc_lib_deps.CC_INCLUDE)
139 PROTO_INCLUDE = os.path.normpath(protoc_lib_deps.PROTO_INCLUDE)
141 GRPC_PYTHON_TOOLS_PACKAGE = 'grpc_tools'
142 GRPC_PYTHON_PROTO_RESOURCES_NAME = '_proto'
145 if "win32" in sys.platform:
146 DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1),)
147 if '64bit' in platform.architecture()[0]:
148 DEFINE_MACROS += (('MS_WIN64', 1),)
149 elif "linux" in sys.platform or "darwin" in sys.platform:
150 DEFINE_MACROS += (('HAVE_PTHREAD', 1),)
152 # By default, Python3 distutils enforces compatibility of
153 # c plugins (.so files) with the OSX version Python was built with.
154 # We need OSX 10.10, the oldest which supports C++ thread_local.
155 if 'darwin' in sys.platform:
156 mac_target = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET')
157 if mac_target and (pkg_resources.parse_version(mac_target) <
158 pkg_resources.parse_version('10.10.0')):
159 os.environ['MACOSX_DEPLOYMENT_TARGET'] = '10.10'
160 os.environ['_PYTHON_HOST_PLATFORM'] = re.sub(
161 r'macosx-[0-9]+\.[0-9]+-(.+)', r'macosx-10.10-\1',
166 tools_path = GRPC_PYTHON_TOOLS_PACKAGE.replace('.', os.path.sep)
167 proto_resources_path = os.path.join(tools_path,
168 GRPC_PYTHON_PROTO_RESOURCES_NAME)
170 for proto_file in PROTO_FILES:
171 source = os.path.join(PROTO_INCLUDE, proto_file)
172 target = os.path.join(proto_resources_path, proto_file)
173 relative_target = os.path.join(GRPC_PYTHON_PROTO_RESOURCES_NAME,
176 os.makedirs(os.path.dirname(target))
177 except OSError as error:
178 if error.errno == errno.EEXIST:
182 shutil.copy(source, target)
183 proto_files.append(relative_target)
184 return {GRPC_PYTHON_TOOLS_PACKAGE: proto_files}
187 def extension_modules():
188 if BUILD_WITH_CYTHON:
189 plugin_sources = [os.path.join('grpc_tools', '_protoc_compiler.pyx')]
191 plugin_sources = [os.path.join('grpc_tools', '_protoc_compiler.cpp')]
194 os.path.join('grpc_tools', 'main.cc'),
195 os.path.join('grpc_root', 'src', 'compiler', 'python_generator.cc')
196 ] + [os.path.join(CC_INCLUDE, cc_file) for cc_file in CC_FILES]
198 plugin_ext = extension.Extension(
199 name='grpc_tools._protoc_compiler',
200 sources=plugin_sources,
204 os.path.join('grpc_root', 'include'),
208 define_macros=list(DEFINE_MACROS),
209 extra_compile_args=list(EXTRA_COMPILE_ARGS),
210 extra_link_args=list(EXTRA_LINK_ARGS),
212 extensions = [plugin_ext]
213 if BUILD_WITH_CYTHON:
214 from Cython import Build
215 return Build.cythonize(extensions)
222 version=grpc_version.VERSION,
223 description='Protobuf code generator for gRPC',
224 long_description=open(_README_PATH, 'r').read(),
225 author='The gRPC Authors',
226 author_email='grpc-io@googlegroups.com',
227 url='https://grpc.io',
228 license='Apache License 2.0',
229 classifiers=CLASSIFIERS,
230 ext_modules=extension_modules(),
231 packages=setuptools.find_packages('.'),
233 'protobuf>=3.5.0.post1, < 4.0dev',
234 'grpcio>={version}'.format(version=grpc_version.VERSION),
237 package_data=package_data(),