Python distutils，如何获得将要使用的编译器?

问题描述

例如，我可以使用 python setup.py build --compiler=msvc 或 python setup.py build --compiler=mingw32 或只是 pythonsetup.py build，在这种情况下，将使用默认编译器(例如，bcpp).如何在 setup.py 中获取编译器名称(例如分别为 msvc、mingw32 和 bcpp)?

For example, I may use python setup.py build --compiler=msvc or python setup.py build --compiler=mingw32 or just python setup.py build, in which case the default compiler (say, bcpp) will be used. How can I get the compiler name inside my setup.py (e. g. msvc, mingw32 and bcpp, respectively)?

UPD.:我不需要默认编译器，我需要的是实际上将要使用的编译器，不一定是默认编译器.到目前为止，我还没有找到比解析 sys.argv 以查看是否有 --compiler... 字符串更好的方法.

UPD.: I don't need the default compiler, I need the one that is actually going to be used, which is not necessarily the default one. So far I haven't found a better way than to parse sys.argv to see if there's a --compiler... string there.

推荐答案

这是 Luper Rouch 答案的扩展版本，它帮助我获得了一个 openmp 扩展，以便在 Windows 上同时使用 mingw 和 msvc 进行编译.在子类化 build_ext 之后，您需要将其传递给 cmdclass arg 中的 setup.py.通过继承 build_extensions 而不是 finalize_options，您将拥有要查看的实际编译器对象，因此您可以获得更详细的版本信息.您最终可以在每个编译器、每个扩展的基础上设置编译器标志:

This is an expanded version of Luper Rouch's answer that worked for me to get an openmp extension to compile using both mingw and msvc on windows. After subclassing build_ext you need to pass it to setup.py in the cmdclass arg. By subclassing build_extensions instead of finalize_options you'll have the actual compiler object to look into, so you can then get more detailed version information. You could eventually set compiler flags on a per-compiler, per-extension basis:

from distutils.core import setup, Extension
from distutils.command.build_ext import build_ext
copt =  {'msvc': ['/openmp', '/Ox', '/fp:fast','/favor:INTEL64','/Og']  ,
     'mingw32' : ['-fopenmp','-O3','-ffast-math','-march=native']       }
lopt =  {'mingw32' : ['-fopenmp'] }

class build_ext_subclass( build_ext ):
    def build_extensions(self):
        c = self.compiler.compiler_type
        if copt.has_key(c):
           for e in self.extensions:
               e.extra_compile_args = copt[ c ]
        if lopt.has_key(c):
            for e in self.extensions:
                e.extra_link_args = lopt[ c ]
        build_ext.build_extensions(self)

mod = Extension('_wripaca',
            sources=['../wripaca_wrap.c', 
                     '../../src/wripaca.c'],
            include_dirs=['../../include']
            )

setup (name = 'wripaca',
   ext_modules = [mod],
   py_modules = ["wripaca"],
   cmdclass = {'build_ext': build_ext_subclass } )

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