使用distutils和build_clib构建C库 [英] Using distutils and build_clib to build C library

问题描述

有人在distutils中使用 build_clib 命令从setup.py构建外部（非python）C库吗？

我的目标是建立一个非常简单的外部库，然后建立一个链接到它的cython包装器。我找到的最简单的示例是此处，但这使用了

解决方案，这是我无法想象的对gcc的 system（）调用。 div>

不是将库名作为字符串传递，而是将元组与源一起传递来编译：

setup.py

  import sys 
从distutils.core导入设置
从distutils.command.build_clib import build_clib 
来自distutils.extension import扩展
来自Cython.Distutils import build_ext 
 
 libhello =（'hello'，{'sources'：['hello.c']}）
 
 ext_modules = [
 Extension（ demo，[ demo.pyx]）
] 
 
 def main（）：
 setup（
名称='演示'，
库= [libhello]，
 cmdclass = {'build_clib'：build_clib，'build_ext'：build_ext}，
 ext_modules = ext_modules 
 ）
 
如果__name__ == '__main__'：
 main（）
  

hello.c

  int hello（void）{返回42; } 
  

hello.h

  int hello（void）; 
  

demo.pyx

 导入演示
 cpdef test（）：
 return hello（）
  

demo.pxd

  cdef extern来自你好.h：
 int hello（）
  

代码大致可用： https://gist.github.com/snorfalorpagus/2346f9a7074b432df959

Does anyone have a good example of using the build_clib command in distutils to build an external (non-python) C library from setup.py? The documentation on the subject seems to be sparse or non-existent.

My aim is to build a very simple external library, then build a cython wrapper which links to it. The simplest example I've found is here, but this uses a system() call to gcc which I can't imagine is best practice.

解决方案

Instead of passing a library name as a string, pass a tuple with the sources to compile:

setup.py

import sys
from distutils.core import setup
from distutils.command.build_clib import build_clib
from distutils.extension import Extension
from Cython.Distutils import build_ext

libhello = ('hello', {'sources': ['hello.c']})

ext_modules=[
    Extension("demo", ["demo.pyx"])
]

def main():
    setup(
        name = 'demo',
        libraries = [libhello],
        cmdclass = {'build_clib': build_clib, 'build_ext': build_ext},
        ext_modules = ext_modules
    )

if __name__ == '__main__':
    main()

hello.c

int hello(void) { return 42; }

hello.h

int hello(void);

demo.pyx

cimport demo
cpdef test():
    return hello()

demo.pxd

cdef extern from "hello.h":
    int hello()

Code is available as a gist: https://gist.github.com/snorfalorpagus/2346f9a7074b432df959

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