gcc可以编译python程序吗_如何编译.C code从用Cython用gcc

最新推荐文章于 2024-09-21 03:45:47 发布

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最新推荐文章于 2024-09-21 03:45:47 发布

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文章标签： gcc可以编译python程序吗

本文链接：https://blog.youkuaiyun.com/weixin_39557419/article/details/111449591

博主在Windows 7上安装Cython后，用gcc编译Cython代码时遇到大量未定义引用错误，虽确认libpython.a文件存在仍无法解决。使用pyximport或setup - script可行但不方便。最后给出解决方案，通过特定命令用gcc编译生成共享库并链接相关库。

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Now that I've successfully installed Cython on Windows 7, I try to compile some Cython code using Cython, but gcc makes my life hard.

cdef void say_hello(name):

print "Hello %s" % name

Using gcc to compile the code throws dozens of undefined reference to -erros, and I'm pretty sure the libpython.a is available (as the installation tutorial said, undefined reference to -errors are thrown if this file is missing).

$ cython ctest.pyx

$ gcc ctest.c -I"C:\Python27\include"

C:\Users\niklas\AppData\Local\Temp\cckThGrF.o:ctest.c:(.text+0x1038): undefined reference to `_imp__PyString_FromStringAndSize'

C:\Users\niklas\AppData\Local\Temp\cckThGrF.o:ctest.c:(.text+0x1075): undefined reference to `_imp___Py_TrueStruct'

C:\Users\niklas\AppData\Local\Temp\cckThGrF.o:ctest.c:(.text+0x1086): undefined reference to `_imp___Py_ZeroStruct'

C:\Users\niklas\AppData\Local\Temp\cckThGrF.o:ctest.c:(.text+0x1099): undefined reference to `_imp___Py_NoneStruct'

C:\Users\niklas\AppData\Local\Temp\cckThGrF.o:ctest.c:(.text+0x10b8): undefined reference to `_imp__PyObject_IsTrue'

c:/program files/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(main.o):main.c:(.text+0xd2): undefined reference to `WinMain@16'

collect2: ld returned 1 exit status

The weird thing is, using pyximport* or a setup-script works pretty fine, but it's both not very handy when still working on a module.

How to compile those .c files generated with Cython using gcc ?

or any other compiler, important is that it will work !

*pyximport: Is it normal that only python-native functions and classes are contained in the imported module and not cdef-functions and classes ?

like:

# filename: cython_test.pyx

cdef c_foo():

print "c_foo !"

def foo():

print "foo !"

c_foo()

import pyximport as p; p.install()

import cython_test

cython_test.foo()

# foo !\nc_foo !

cython_test.c_foo()

# AttributeError, module object has no attribute c_foo

UPDATE

Calling $ gcc ctest.c "C:\Python27\libs\libpython27.a" kills the undefined reference to -erros, but this one:

c:/program files/mingw/bin/../lib/gcc/mingw32/4.5.2/../../../libmingw32.a(main.o):main.c:(.text+0xd2): undefined reference to `WinMain@16'

解决方案

Try:

gcc -c -IC:\Python27\include -o ctest.o ctest.c

gcc -shared -LC:\Python27\libs -o ctest.pyd ctest.o -lpython27

-shared creates a shared library. -lpython27 links with the import library C:\Python27\libs\libpython27.a.