windows build ext_ort.pyd has some errors

[lqyp0420]

LINK : error LNK2001: 无法解析的外部符号 PyInit__ext_ort E:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu_ext_ort.cp37-win_amd64.lib : fatal error LNK1120: 1 个无法解析的外部命令 error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.21.27702\bin\HostX86\x64\link.exe' failed with exit status 1120

win10 python3.7 torch 1.9

[grimoire]

Hi Could you provide more detail about how do you build the extension? You can also use tools like dumpbin.exe to search the generated libs to see if there are any symbols about _ext_ort.

[lqyp0420]

Hi Could you provide more detail about how do you build the extension? You can also use tools like dumpbin.exe to search the generated libs to see if there are any symbols about _ext_ort.

I just fllow the install doc set ONNXRUNTIME_DIR=onnxruntime-win-x64-1.8.1 MMCV_WITH_ORT = 1 then python setup.py build_ext. the lib file is not been created my env: win10 python3.7 torch1.9 vs2019 onnxruntime_cpu_1.8.1

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.21.27702\bin\HostX86\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:J:\install_package\onnxruntime-win-x64-1.8.1\lib /LIBPATH:C:\Anaconda3\lib\site-packages\torch\lib "/LIBPATH:C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.1\lib/x64" /LIBPATH:C:\Anaconda3\libs /LIBPATH:C:\Anaconda3\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.21.27702\ATLMFC\lib\x64" "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.21.27702\lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\ucrt\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\um\x64" "/LIBPATH:C:\Program Files\IBM\WebSphere MQ\tools\lib64" "/LIBPATH:C:\Program Files\IBM\WebSphere MQ\tools\lib" onnxruntime.lib /EXPORT:PyInit_ext_ort J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\corner_pool.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\gridSample.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\modulated_deform_conv.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\nms.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\onnxruntime_register.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\reduce_ops.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\roi_align.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\roi_align_rotated.obj J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\soft_nms.obj /OUT:build\lib.win-amd64-3.7\mmcv\ext_ort.cp37-win_amd64.pyd /IMPLIB:J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\ext_ort.cp37-win_amd64.lib LINK : error LNK2001: 无法解析的外部符号 PyInit_ext_ort J:\install_package\mmcv-1.3.13\build\temp.win-amd64-3.7\Release./mmcv/ops/csrc/onnxruntime/cpu\ext_ort.cp37-win_amd64.lib : fatal error LNK1120: 1 个无法解析的外部命令 error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.21.27702\bin\HostX86\x64\link.exe' failed with exit status 1120

[grimoire]

Errr, as the missing symbol is related to python, you can try compiling the extension by yourself (not the python setuputil). The code is in mmcv/ops/csrc/onnxruntime.

[lqyp0420]

Errr, as the missing symbol is related to python, you can try compiling the extension by yourself (not the python setuputil). The code is in mmcv/ops/csrc/onnxruntime.

OK. I will try use cmake to create a dll file. thank for your suggestion

[gasharper]

@grimoire The same problem.

In my cases, mmcv can be compiled with MMCV_WITH_OPS = 1 successfully, and it can generate _ext.cp37-win_amd64.pyd file.

However, mmcv cannot be compiled with MMCV_WITH_ORT = 1, so it may not be a problem caused by Python. It may be caused by the setup.py which can not deal with the Windows platform well.

I am a beginner in this field. Can you provide any suggestions about how to compile this extension? I would appreciate any help.😄

[2019-GitHub-Chu]

same error.

[echoodqq]

same error, confused