问题
I'm trying to get setup.py to compile c++ code with the macports version of gcc. The problem is the code I am trying to build, doesn't support mac's default clang, which is the default gcc on newer osx versions.
I created a custom setup.cfg file
setup.cfg
[build_ext]
compiler=gcc-mp-4.8
However when I run python setup.py build_ext I get the following error
running build_ext
error: don't know how to compile C/C++ code on platform 'posix' with 'gcc-mp-4.8' compiler
How can I get setup.py to use my version of gcc gcc-mp-4.8?
Currently setup.py defaults to using /usr/bin/clang, when i type gcc -v it shows that it is using gcc version 4.8.2
回答1:
The --compiler option expects "unix", "msvc", "cygwin", "mingw32", "bcpp", or "emx", from my understanding. You can try setting the compiler name by specifying a CC environment variable instead.
Inside setup.py try setting os.environ:
os.environ["CC"] = "gcc-4.8"
os.environ["CXX"] = "gcc-4.8"
or just:
CC=gcc
g++ would be used like this too;
os.environ["CXX"] = "g++-4.7"
来源：https://stackoverflow.com/questions/25595098/force-setup-py-to-use-my-custom-compiler