我想使用Cython将一个包含C++和OpenMP代码的测试项目进行封装,并通过setup.py
文件使用distutils进行构建。我的文件内容如下:
from distutils.core import setup
from distutils.extension import Extension
from Cython.Build import cythonize
from Cython.Distutils import build_ext
modules = [Extension("Interface",
["Interface.pyx", "Parallel.cpp"],
language = "c++",
extra_compile_args=["-fopenmp"],
extra_link_args=["-fopenmp"])]
for e in modules:
e.cython_directives = {"embedsignature" : True}
setup(name="Interface",
cmdclass={"build_ext": build_ext},
ext_modules=modules)
-fopenmp
标志用于gcc与OpenMP编译和链接。但是,如果我只是调用cls ~/workspace/CythonOpenMP/src $ python3 setup.py build
因为编译器是Clang,所以无法识别此标志:
running build
running build_ext
skipping 'Interface.cpp' Cython extension (up-to-date)
building 'Interface' extension
cc -Wno-unused-result -fno-common -dynamic -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -I/usr/local/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python3/3.3.0/Frameworks/Python.framework/Versions/3.3/include/python3.3m -c Interface.cpp -o build/temp.macosx-10.8-x86_64-3.3/Interface.o -fopenmp
clang: warning: argument unused during compilation: '-fopenmp'
cc -Wno-unused-result -fno-common -dynamic -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -I/usr/local/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python3/3.3.0/Frameworks/Python.framework/Versions/3.3/include/python3.3m -c Parallel.cpp -o build/temp.macosx-10.8-x86_64-3.3/Parallel.o -fopenmp
clang: warning: argument unused during compilation: '-fopenmp'
Parallel.cpp:24:10: warning: unknown pragma ignored [-Wunknown-pragmas]
#pragma omp parallel for
^
1 warning generated.
c++ -bundle -undefined dynamic_lookup -L/usr/local/lib -L/usr/local/opt/sqlite/lib build/temp.macosx-10.8-x86_64-3.3/Interface.o build/temp.macosx-10.8-x86_64-3.3/Parallel.o -o build/lib.macosx-10.8-x86_64-3.3/Interface.so -fopenmp
ld: library not found for -lgomp
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'c++' failed with exit status 1
我曾尝试指定gcc,但没有成功:
cls ~/workspace/CythonOpenMP/src $ python3 setup.py build --compiler=g++-4.7
running build
running build_ext
error: don't know how to compile C/C++ code on platform 'posix' with 'g++-4.7' compiler
我该如何告诉distutils使用gcc?
os.environ["CC"] = "g++-4.7";os.environ["CXX"] = "g++-4.7"
已经生效。 - clstaudtsetup.py
想要使用icc
。当我设置CC=gcc
时,它确实尝试使用gcc
,但它仍然使用适用于icc
的命令行参数,其中包括-fp-model strict
,而gcc
不理解,并且中止。因此,似乎仅设置CC
并不是正确的方法。 - amaureapsutil.py
部分地忽略了CC
设置,因此我找到了一种非常丑陋的方法,在 Solaris 11 上进行构建:ln -s /usr/bin/gcc /usr/bin/cc
。 - Philip Kearns