C++ extensions build failed if there's space in the path of the current directory

[aligoglos]

I've recently installed pytorch 1.5 but since that I couldn't compile any c++ and cuda extensions.
my environment :

OS = windows 10
python = 3.7.6
cuda = 10.2
pytorch = 1.5
ninja = 1.9.0.post1 

When I want to compile any code always same exception occur, for instance when I want to compile DCNv2 below exception occur:

 py setup.py install
running install
running bdist_egg
running egg_info
creating DCN.egg-info
writing DCN.egg-info\PKG-INFO
writing dependency_links to DCN.egg-info\dependency_links.txt
writing top-level names to DCN.egg-info\top_level.txt
writing manifest file 'DCN.egg-info\SOURCES.txt'
reading manifest file 'DCN.egg-info\SOURCES.txt'
writing manifest file 'DCN.egg-info\SOURCES.txt'
installing library code to build\bdist.win-amd64\egg
running install_lib
running build_py
creating build
creating build\lib.win-amd64-3.7
creating build\lib.win-amd64-3.7\functions
copying functions\deform_conv_func.py -> build\lib.win-amd64-3.7\functions
copying functions\deform_psroi_pooling_func.py -> build\lib.win-amd64-3.7\functions
copying functions\modulated_deform_conv_func.py -> build\lib.win-amd64-3.7\functions
copying functions\__init__.py -> build\lib.win-amd64-3.7\functions
creating build\lib.win-amd64-3.7\modules
copying modules\deform_conv.py -> build\lib.win-amd64-3.7\modules
copying modules\deform_psroi_pooling.py -> build\lib.win-amd64-3.7\modules
copying modules\modulated_deform_conv.py -> build\lib.win-amd64-3.7\modules
copying modules\__init__.py -> build\lib.win-amd64-3.7\modules
running build_ext
C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py:237: UserWarning: Error checking compiler version for cl: [WinError 2] The system cannot find the file specified
  warnings.warn('Error checking compiler version for {}: {}'.format(compiler, error))
building 'DCN' extension
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\src
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\src\cpu
creating D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\src\cuda
Emitting ninja build file D:\Artificial Intelligence\SuperResolution\Video\_ThirdPartyLib\Deform_Conv\build\temp.win-amd64-3.7\Release\build.ninja...
Compiling objects...
Allowing ninja to set a default number of workers... (overridable by setting the environment variable MAX_JOBS=N)
ninja: error: build.ninja:21: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

Traceback (most recent call last):
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1400, in _run_ninja_build
    check=True)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 512, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "setup.py", line 65, in <module>
    cmdclass={"build_ext": torch.utils.cpp_extension.BuildExtension},
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\__init__.py", line 144, in setup
    return distutils.core.setup(**attrs)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\core.py", line 148, in setup
    dist.run_commands()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install.py", line 67, in run
    self.do_egg_install()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install.py", line 109, in do_egg_install
    self.run_command('bdist_egg')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\bdist_egg.py", line 173, in run
    cmd = self.call_command('install_lib', warn_dir=0)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\bdist_egg.py", line 159, in call_command
    self.run_command(cmdname)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install_lib.py", line 11, in run
    self.build()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\install_lib.py", line 107, in build
    self.run_command('build_ext')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\build_ext.py", line 87, in run
    _build_ext.run(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\Cython\Distutils\old_build_ext.py", line 186, in run
    _build_ext.build_ext.run(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 340, in run
    self.build_extensions()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 580, in build_extensions
    build_ext.build_extensions(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\Cython\Distutils\old_build_ext.py", line 195, in build_extensions
    _build_ext.build_ext.build_extensions(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 449, in build_extensions
    self._build_extensions_serial()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 474, in _build_extensions_serial
    self.build_extension(ext)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\build_ext.py", line 208, in build_extension
    _build_ext.build_extension(self, ext)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 534, in build_extension
    depends=ext.depends)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 562, in win_wrap_ninja_compile
    with_cuda=with_cuda)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1140, in _write_ninja_file_and_compile_objects
    error_prefix='Error compiling objects for extension')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1413, in _run_ninja_build
    raise RuntimeError(message)
RuntimeError: Error compiling objects for extension

Its not related to code because I test at least 5 different source codes but always rise same exception that : ninja: error: build.ninja:21: multiple outputs aren't (yet?) supported by depslog; bring this up on the mailing list if it affects you

[peterjc123]

Oh, it is due to that you have space in your dir. As a user, you can try to build in a path without space in it. To help us improve, you can upload the auto-generated ninja.build file.

[aligoglos]

I've tested without space but no difference!
these are build logs:
DCNv2.zip

[peterjc123]

I tried to compile the extension locally and cannot reproduce this error. All I have to do is to activate the VC environment, replace all the THCState_getCurrentStream(state) calls with c10::cuda::getCurrentCUDAStream() in src\cuda\dcn_v2_cuda.cu and then call python setup.py build. I also checked your ninja.build file but didn't find anything wrong in it. BTW, could you please remove the build directory and try again?

[peterjc123]

BTW, this is my ninja.build file.

ninja_required_version = 1.3
cxx = cl
nvcc = C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0\bin\nvcc

cflags = /nologo /Ox /W3 /GL /DNDEBUG /MT /MD /wd4819 /EHsc -DWITH_CUDA -IC:\Users\peter\Desktop\try\DCNv2\src -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\TH -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0\include" -IC:\Users\peter\Anaconda3\include -IC:\Users\peter\Anaconda3\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.7.2\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt"
post_cflags = -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 /std:c++14
cuda_cflags = -Xcompiler /MD -Xcompiler /wd4819 -Xcompiler /EHsc -DWITH_CUDA -IC:\Users\peter\Desktop\try\DCNv2\src -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\TH -IC:\Users\peter\Anaconda3\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v9.0\include" -IC:\Users\peter\Anaconda3\include -IC:\Users\peter\Anaconda3\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.7.2\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt"
cuda_post_cflags = -D__CUDA_NO_HALF_OPERATORS__ -D__CUDA_NO_HALF_CONVERSIONS__ -D__CUDA_NO_HALF2_OPERATORS__ --expt-relaxed-constexpr -DCUDA_HAS_FP16=1 -D__CUDA_NO_HALF_OPERATORS__ -D__CUDA_NO_HALF_CONVERSIONS__ -D__CUDA_NO_HALF2_OPERATORS__ -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 -gencode=arch=compute_61,code=sm_61
ldflags = 

rule compile
  command = cl /showIncludes $cflags -c $in /Fo$out $post_cflags
  deps = msvc

rule cuda_compile
  command = $nvcc $cuda_cflags -c $in -o $out $cuda_post_cflags



build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\vision.obj: compile C$:\Users\peter\Desktop\try\DCNv2\src\vision.cpp
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_cpu.obj: compile C$:\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_cpu.cpp
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_im2col_cpu.obj: compile C$:\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_im2col_cpu.cpp
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_psroi_pooling_cpu.obj: compile C$:\Users\peter\Desktop\try\DCNv2\src\cpu\dcn_v2_psroi_pooling_cpu.cpp
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_cuda.obj: cuda_compile C$:\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_cuda.cu
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_im2col_cuda.obj: cuda_compile C$:\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_im2col_cuda.cu
build C$:\Users\peter\Desktop\try\DCNv2\build\temp.win-amd64-3.7\Release\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_psroi_pooling_cuda.obj: cuda_compile C$:\Users\peter\Desktop\try\DCNv2\src\cuda\dcn_v2_psroi_pooling_cuda.cu

[aligoglos]

I removed it and run again, output is:

 py setup.py install
running install
running bdist_egg
running egg_info
creating DCNv2.egg-info
writing DCNv2.egg-info\PKG-INFO
writing dependency_links to DCNv2.egg-info\dependency_links.txt
writing top-level names to DCNv2.egg-info\top_level.txt
writing manifest file 'DCNv2.egg-info\SOURCES.txt'
reading manifest file 'DCNv2.egg-info\SOURCES.txt'
writing manifest file 'DCNv2.egg-info\SOURCES.txt'
installing library code to build\bdist.win-amd64\egg
running install_lib
running build_ext
C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py:237: UserWarning: Error checking compiler version for cl: [WinError 2] The system cannot find the file specified
  warnings.warn('Error checking compiler version for {}: {}'.format(compiler, error))
building '_ext' extension
creating D:\DCNv2\build
creating D:\DCNv2\build\temp.win-amd64-3.7
creating D:\DCNv2\build\temp.win-amd64-3.7\Release
creating D:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2
creating D:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src
creating D:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\cpu
creating D:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\cuda
Emitting ninja build file D:\DCNv2\build\temp.win-amd64-3.7\Release\build.ninja...
Compiling objects...
Allowing ninja to set a default number of workers... (overridable by setting the environment variable MAX_JOBS=N)
[1/5] cl /showIncludes /nologo /Ox /W3 /GL /DNDEBUG /MD /MD /wd4819 /EHsc -DWITH_CUDA -ID:\DCNv2\src -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\TH -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1\include" -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" -c D:\DCNv2\src\cpu\dcn_v2_cpu.cpp /FoD:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\cpu\dcn_v2_cpu.obj -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 /std:c++14
FAILED: D:/DCNv2/build/temp.win-amd64-3.7/Release/DCNv2/src/cpu/dcn_v2_cpu.obj
cl /showIncludes /nologo /Ox /W3 /GL /DNDEBUG /MD /MD /wd4819 /EHsc -DWITH_CUDA -ID:\DCNv2\src -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\TH -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1\include" -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" -c D:\DCNv2\src\cpu\dcn_v2_cpu.cpp /FoD:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\cpu\dcn_v2_cpu.obj -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 /std:c++14
CreateProcess failed: The system cannot find the file specified.
[2/5] cl /showIncludes /nologo /Ox /W3 /GL /DNDEBUG /MD /MD /wd4819 /EHsc -DWITH_CUDA -ID:\DCNv2\src -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\TH -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1\include" -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" -c D:\DCNv2\src\vision.cpp /FoD:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\vision.obj -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 /std:c++14
FAILED: D:/DCNv2/build/temp.win-amd64-3.7/Release/DCNv2/src/vision.obj
cl /showIncludes /nologo /Ox /W3 /GL /DNDEBUG /MD /MD /wd4819 /EHsc -DWITH_CUDA -ID:\DCNv2\src -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\torch\csrc\api\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\TH -IC:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\include\THC "-IC:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.1\include" -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include -IC:\Users\127051\AppData\Local\Programs\Python\Python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" -c D:\DCNv2\src\vision.cpp /FoD:\DCNv2\build\temp.win-amd64-3.7\Release\DCNv2\src\vision.obj -DTORCH_API_INCLUDE_EXTENSION_H -DTORCH_EXTENSION_NAME=_ext -D_GLIBCXX_USE_CXX11_ABI=0 /std:c++14
CreateProcess failed: The system cannot find the file specified.
ninja: fatal: ReadFile: The handle is invalid.

Traceback (most recent call last):
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1400, in _run_ninja_build
    check=True)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 512, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "setup.py", line 70, in <module>
    cmdclass={"build_ext": torch.utils.cpp_extension.BuildExtension},
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\__init__.py", line 144, in setup
    return distutils.core.setup(**attrs)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\core.py", line 148, in setup
    dist.run_commands()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install.py", line 67, in run
    self.do_egg_install()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install.py", line 109, in do_egg_install
    self.run_command('bdist_egg')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\bdist_egg.py", line 173, in run
    cmd = self.call_command('install_lib', warn_dir=0)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\bdist_egg.py", line 159, in call_command
    self.run_command(cmdname)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\install_lib.py", line 11, in run
    self.build()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\install_lib.py", line 107, in build
    self.run_command('build_ext')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\build_ext.py", line 87, in run
    _build_ext.run(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\Cython\Distutils\old_build_ext.py", line 186, in run
    _build_ext.build_ext.run(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 340, in run
    self.build_extensions()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 580, in build_extensions
    build_ext.build_extensions(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\Cython\Distutils\old_build_ext.py", line 195, in build_extensions
    _build_ext.build_ext.build_extensions(self)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 449, in build_extensions
    self._build_extensions_serial()
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 474, in _build_extensions_serial
    self.build_extension(ext)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\setuptools\command\build_ext.py", line 208, in build_extension
    _build_ext.build_extension(self, ext)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\distutils\command\build_ext.py", line 534, in build_extension
    depends=ext.depends)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 562, in win_wrap_ninja_compile
    with_cuda=with_cuda)
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1140, in _write_ninja_file_and_compile_objects
    error_prefix='Error compiling objects for extension')
  File "C:\Users\127051\AppData\Local\Programs\Python\Python37\lib\site-packages\torch\utils\cpp_extension.py", line 1413, in _run_ninja_build
    raise RuntimeError(message)
RuntimeError: Error compiling objects for extension

[peterjc123]

@aligoglos You'll need to activate the VC environment before compiling the extensions. Find x64 Native Tools Command Prompt for VS 2019 and run the command in that console.

[aligoglos]

Thanks, I installed c++ CLI and update my VS problem solved.