Python distutils，如何获取将要使用的编译器？ [英] Python distutils, how to get a compiler that is going to be used?

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 python setup.py build ，在这种情况下，默认编译器（比如说， bcpp ） 将会被使用。如何获取我的setup.py中的编译器名称（例如 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，我需要实际将被使用，这不一定是默认的。到目前为止，我没有找到一个更好的方法比解析 sys.argv 看看是否有一个 - 编译器... string there。

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的扩展版本的答案，在Windows上使用mingw和msvc进行编译。子类化build_ext后，您需要将其传递给cmdclass arg中的setup.py。通过子类化build_extensions而不是finalize_options，你将有实际的编译器对象来查看，这样你就可以得到更详细的版本信息。你最终可以在每个编译器，每扩展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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