我正在尝试使用 swig 和设置文件将 c++ 代码包装到带有 numpy 的 python。我创建了一个相当简单的 swig 文件和 setup.py，但是当我运行时（在 Windows XP 上）
python setup.py build -c mingw32
共享库的编译失败。我不知道为什么，所以希望有人能指出我正确的方向。会发生什么： setup-skript 运行 swig，并创建了一个包装的 goldstein_wrap.cpp。然后调用MinGW，它失败了：
C:\MinGW\bin\gcc.exe -mdll -O -Wall -IC:\Programme\Python27\lib\site-packages\numpy\core\include -IC:\Programme\Python27\include -IC:\Programme\ Python27\PC -c > goldstein_wrap.cpp -o build\temp.win32-2.7\Release\goldstein_wrap.o -static-libgcc -static-libstdc++
在 C:\Programme\Python27\lib\site-packages\numpy\core\include/numpy/arrayobject.h:14:0 包含的文件中，
from goldstein_wrap.cpp:3059:C:\Programme\Python27\lib\site-packages\numpy\core\include/numpy/ndarrayobject.h:10:1:
Fehler：»extern« 之前的预期初始化程序
goldstein_wrap.cpp:2954:25: 警告：»swig_module« definiert, aber nicht verwendet
[-Wunused-变量]
错误：命令“gcc”失败，退出状态为 1
我的 swig 文件如下所示：
%module goldstein
%{
#define SWIG_FILE_WITH_INIT
#include "goldstein.h"
%}
/*include numpy typemaps*/
%include "numpy.i"
/*initialize module*/
%init %{
import_array();
%}
%rename(unwrap2d) phase_unwrapping_func;
/* typemaps for the arrays*/
%apply (int DIM1,int DIM2,float* IN_ARRAY2) {(int ysize,int xsize,float* in)};
%apply (int DIM1,int DIM2,unsigned short* IN_ARRAY2) {(int y1,int x1,unsigned short* mask)};
%apply (int DIM1,int DIM2,float* INPLACE_ARRAY2) {(int y2,int x2,float* out),
(int y3,int x3,float* bcuts),
(int y4,int x4,float* res),
(int y5,int x5,float* diff)}
%inline %{
void phase_unwrapping_func(int ysize,int xsize,float* in,int y1,int x1,
unsigned short* mask,int y2,int x2,float* out, int y3,int x3,
float* bcuts,int y4,int x4,float* res, int y5,int x5,float* diff)
{
phase_unwrapping(xsize, ysize, in, mask, out, bcuts, res, diff);
}
%}
并提供所有信息，我的 setup.py：
from distutils.core import setup, Extension
import numpy
try:
np_include = numpy.get_include()
except AttributeError:
np_include = numpy.get_numpy_include()
_goldstein = Extension('_goldstein',
['goldstein.i','goldstein.cpp'],
include_dirs=[np_include], #include python dll
swig_opts=['-c++'], #enable c++ wrapping
extra_compile_args=["-static-libgcc",
"-static-libstdc++"],
)
setup(name='goldstein',
version='1.1',
description='Blubb',
author='Foo',
ext_modules = [_goldstein]
)
并且，根据要求，swig 生成的文件中提到的行：第 2950 到 2958 行：
/* -------- TYPES TABLE (BEGIN) -------- */
#define SWIGTYPE_p_char swig_types[0]
static swig_type_info *swig_types[2];
static swig_module_info swig_module = {swig_types, 1, 0, 0, 0, 0};
#define SWIG_TypeQuery(name) SWIG_TypeQueryModule(&swig_module, &swig_module, name)
#define SWIG_MangledTypeQuery(name) SWIG_MangledTypeQueryModule(&swig_module, &swig_module, name)
/* -------- TYPES TABLE (END) -------- */
第 3051 至 3060 行：
#define SWIG_FILE_WITH_INIT
#include "goldstein.h"
#ifndef SWIG_FILE_WITH_INIT
# define NO_IMPORT_ARRAY
#endif
#include "stdio.h"
#include <numpy/arrayobject.h>
void phase_unwrapping_func(int ysize,int xsize,float* in,int y1,int x1,
unsigned short* mask,int y2,int x2,float* out,
int y3,int x3,float* bcuts,int y4,int x4,float* res,
int y5,int x5,float* diff)
{
phase_unwrapping(xsize, ysize, in, mask, out, bcuts, res, diff);
}
第 3059 行是包含 numpy/arrayobject.h 的行。对不起，我早该想到的……