使用python setup.py build_ext --inplace命令编译cython代码, 出现以下错误:
Compiling cython_example.pyx because it changed. [1/1] Cythonizing cython_example.pyx D:python_virtualenvigdatalibsite-packagesCythonCompilerMain.py:367: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: D:学习igdatalearncython_testcython_example.pyx tree = Parsing.p_module(s, pxd, full_module_name) running build_ext building 'cython_test.cython_example' extension creating build creating build emp.win-amd64-3.6 creating build emp.win-amd64-3.6Release C:Program Files (x86)Microsoft Visual Studio 14.0VCincl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD "-Id:program filespython361include" "-Id:program filespython361includ e" "-IC:Program Files (x86)Microsoft Visual Studio 14.0VCINCLUDE" "-IC:Program Files (x86)Windows Kits10include10.0.10240.0ucrt" "-IC:Program Files (x86)Windows Kits 8.1includeshared" "-IC:Program Files (x86)Windows Kits8.1includeum" "-IC:Program Files (x86)Windows Kits8.1includewinrt" /Tccython_example.c /Fobuild emp.win-amd64 -3.6Releasecython_example.obj cython_example.c creating D:学习igdatalearncython_testcython_test C:Program Files (x86)Microsoft Visual Studio 14.0VCinlink.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO "/LIBPATH:d:program filespython361 Libs" /LIBPATH:D:python_virtualenvigdatalibs /LIBPATH:D:python_virtualenvigdataPCbuildamd64 "/LIBPATH:C:Program Files (x86)Microsoft Visual Studio 14.0VCLIBamd64" "/LIBPATH:C:Program Files (x86)Windows Kits10lib10.0.10240.0ucrtx64" "/LIBPATH:C:Program Files (x86)Windows Kits8.1libwinv6.3umx64" /EXPORT:PyInit_cython_example b uild emp.win-amd64-3.6Releasecython_example.obj /OUT:D:学习igdatalearncython_testcython_testcython_example.cp36-win_amd64.pyd /IMPLIB:build emp.win-amd64-3.6Releasec ython_example.cp36-win_amd64.lib python36.lib(python36.dll) : fatal error LNK1112: module machine type 'x64' conflicts with target machine type 'X86' error: command 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\link.exe' failed with exit status 1112
解决:
报错的意思是系统环境是64位windows系统，使用的C编译工具却是32位的。
windows系统中'x86'表示32位。
上面这个错的主要问题是使用的link.exe是32位的，只要改成64位的link.exe就没有问题了。
环境: windows64位， python 64位, python3.6.1
第一步:
找到windows的系统环境变量path:
将"C:Program Files (x86)Microsoft Visual Studio 14.0VCinamd64;" 加在path最前面，这样就可以优先使用64位的link.exe。
第二步:
新建一个Dos窗口, 执行 "echo %PATH%" ，使环境变量立即生效。(在前面建好的DOS窗口下执行没有用)
第三步:
如果是在pycharm的Terminal中执行的 python setup.py build_ext --inplace命令，还需要先重启pycharm，再在其中执行编译命令才会有效。
DOS的话新建一个DOS窗口即可。
解决了上面这个问题，又出现了一个新问题:
running build_ext building 'cython_test.cython_example' extension C:Program Files (x86)Microsoft Visual Studio 14.0VCinamd64cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD "-Id:program filespython361include" "-Id:program filespython361include" "-IC:Program Files (x86)Microsoft Visual Studio 14.0VCINCLUDE" "-IC:Program Files (x86)Windows Kits10include10.0.10240.0ucrt" "-IC:Program Files (x86)Windows Kits8.1includeshared" "-IC:Program Files (x86)Windows Kits8.1includeum" "-IC:Program Files (x 86)Windows Kits8.1includewinrt" /Tccython_example.c /Fobuild emp.win-amd64-3.6Releasecython_example.obj cython_example.c C:Program Files (x86)Microsoft Visual Studio 14.0VCinamd64link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO "/LIBPATH:d:program filespython361Libs" /LIBPATH:D:python_virtualenvigdatali bs /LIBPATH:D:python_virtualenvigdataPCbuildamd64 "/LIBPATH:C:Program Files (x86)Microsoft Visual Studio 14.0VCLIBamd64" "/LIBPATH:C:Program Files (x86)Windows Kits10lib10.0.10240.0ucrtx64" "/LIBPATH:C:Program F iles (x86)Windows Kits8.1libwinv6.3umx64" /EXPORT:PyInit_cython_example build emp.win-amd64-3.6Releasecython_example.obj /OUT:D:学习igdatalearncython_testcython_testcython_example.cp36-win_amd64.pyd /IMPLIB:build emp.win-amd64-3.6Releasecython_example.cp36-win_amd64.lib cython_example.obj : warning LNK4197: export 'PyInit_cython_example' specified multiple times; using first specification Creating library build emp.win-amd64-3.6Releasecython_example.cp36-win_amd64.lib and object build emp.win-amd64-3.6Releasecython_example.cp36-win_amd64.exp Generating code Finished generating code LINK : fatal error LNK1158: cannot run 'rc.exe' error: command 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64\link.exe' failed with exit status 1158
解决:
错误的意思是缺少rc.exe文件，这个文件在C:Program Files (x86)Windows Kits8.1inx64下，只需要将该目录下的 rc.exe 和 rcdll.dll拷贝一份粘贴到link.exe所在目录C:Program Files (x86)Microsoft Visual Studio 14.0VCinamd64下即可。
如果是32位系统，则是将C:Program Files (x86)Windows Kits8.1inx86下的rc.exe和rcdll.dll粘贴到C:Program Files (x86)Microsoft Visual Studio 14.0VCin下。