【C++】 Debug 版的 CC++ Python 扩展模块链接错误:Error LNK1104 cannot open file 'python27

xiaoxiao2025-11-02  6

Debug 版的 C/C++ Python 扩展模块链接错误:Error LNK1104 cannot open file 'python27_d.lib'


环境配置

(1)python的lib 以及头文件分别加到vc的include/lib directories中去。

(2)写完编译后出现找不到python33_d.lib 错误,出现这个错误的原因是:python_d.lib是 库的调试后形式,当我们以debug模式编译工程时,python就用这个lib文件,但是这个文件是不可用 的。对于这点,最快的办法就是强制要求python在任何情况下都是用非调试版本,就可以了。

所以要做的是:

修改python头文件(位置:C:\Python27\include)pyconfig.h的配置,修改指向调试库文件的参数,由 # if defined(_DEBUG) # pragma comment(lib,"python33_d.lib") # elif defined(Py_LIMITED_API) # pragma comment(lib,"python3.lib") # else # pragma comment(lib,"python33.lib") # endif /* _DEBUG */

修改为:

# if defined(_DEBUG) # pragma comment(lib,"python33.lib") # elif defined(Py_LIMITED_API) # pragma comment(lib,"python3.lib") # else # pragma comment(lib,"python33.lib") # endif /* _DEBUG */

(3)在Visual Studio中编译时必须注意,若Python为64bit而VS C++ Project Config里的platform是32bit,会报错:(我就在这里入坑了)

Error 1 error LNK2019: unresolved external symbol __imp__Py_Finalize referenced in function _main Error 2 error LNK2019: unresolved external symbol __imp__PyEval_CallObjectWithKeywords referenced in function _main Error 3 error LNK2019: unresolved external symbol __imp__PyObject_GetAttrString referenced in function _main Error 4 error LNK2019: unresolved external symbol __imp__PyImport_ImportModule referenced in function _main Error 5 error LNK2019: unresolved external symbol __imp__Py_Initialize referenced in function _main Error 6 error LNK1120: 5 unresolved externals

注意修改自己的platform!!!

记得配置好环境变量!

 

 

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