# Is building from source for windows up to date? (subprocess.CalledProcessError: Command '\['cmake', ..\] returned non-zero exit status 1 error) **URL:** \ **Category:** windows\ **Created:** [July 28, 2020, 5:11am UTC](https://discuss.pytorch.org/t/is-building-from-source-for-windows-up-to-date-subprocess-calledprocesserror-command-cmake-returned-non-zero-exit-status-1-error/90769 "2020-07-28T05:11:54Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Shisho\_Sama](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/shisho_sama/32/6926_2.png) [@Shisho\_Sama](https://discuss.pytorch.org/u/Shisho_Sama)\ **Post date:** [July 28, 2020, 5:11am UTC](https://discuss.pytorch.org/t/is-building-from-source-for-windows-up-to-date-subprocess-calledprocesserror-command-cmake-returned-non-zero-exit-status-1-error/90769/1 "2020-07-28T05:11:54Z")
Hi everyone. I’m in the process of converting our models from Python to C++ for production. For that it seems we need to build Pytorch from source as the prebuilt libtorch doesnt come with torch.h headers and alike ! I’m on Windows 10 1803 and have Visual Studio 2019 installed (v16.6.3). I dont have any GPUs so I didnt install CUDA! or NVTX. I have anaconda and python 3.7 installed and all the deps are installed using the following command: ```auto conda install numpy ninja pyyaml mkl mkl-include setuptools cmake cffi ``` I cloned Pytorch as stated in the readme : ```auto git clone --recursive https://github.com/pytorch/pytorch cd pytorch # if you are updating an existing checkout git submodule sync git submodule update --init --recursive ``` But upon executing these commands : ```auto :: [Optional] If you want to build with VS 2019 generator, please change the value in the next line to `Visual Studio 16 2019`. :: Note: This value is useless if Ninja is detected. However, you can force that by using `set USE_NINJA=OFF`. set CMAKE_GENERATOR=Visual Studio 16 2019 :: Read the content in the previous section carefully before you proceed. :: [Optional] If you want to override the underlying toolset used by Ninja and Visual Studio with CUDA, please run the following script block. :: "Visual Studio 2017 Developer Command Prompt" will be run automatically. :: Make sure you have CMake >= 3.12 before you do this when you use the Visual Studio generator. set CMAKE_GENERATOR_TOOLSET_VERSION=14.11 set DISTUTILS_USE_SDK=1 for /f "usebackq tokens=*" %i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -version [15^,16^) -products * -latest -property installationPath`) do call "%i\VC\Auxiliary\Build\vcvarsall.bat" x64 -vcvars_ver=%CMAKE_GENERATOR_TOOLSET_VERSION% :: [Optional] If you want to override the cuda host compiler set CUDAHOSTCXX=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\bin\HostX64\x64\cl.exe python setup.py install ``` I face these errors: ```auto D:\Codes\pytorch>python setup.py install Building wheel torch-1.7.0a0+8376284 -- Building version 1.7.0a0+8376284 cmake -GNinja -DBUILD_PYTHON=True -DBUILD_TEST=True -DCMAKE_BUILD_TYPE=Release -DCMAKE_GENERATOR=Visual Studio 16 2019 -DCMAKE_GENERATOR_TOOLSET_VERSION=14.11 -DCMAKE_INSTALL_PREFIX=D:\Codes\pytorch\torch -DCMAKE_PREFIX_PATH=C:\Users\User\Anaconda3\Lib\site-packages -DNUMPY_INCLUDE_DIR=C:\Users\User\Anaconda3\Lib\site-packages\numpy\core\include -DPYTHON_EXECUTABLE=C:\Users\User\Anaconda3\python.exe -DPYTHON_INCLUDE_DIR=C:\Users\User\Anaconda3\include -DPYTHON_LIBRARY=C:\Users\User\Anaconda3/libs/python37.lib -DTORCH_BUILD_VERSION=1.7.0a0+8376284 -DUSE_NUMPY=True D:\Codes\pytorch CMake Error: Error: generator : Ninja Does not match the generator used previously: Visual Studio 16 2019 Either remove the CMakeCache.txt file and CMakeFiles directory or choose a different binary directory. Traceback (most recent call last): File "setup.py", line 737, in build_deps() File "setup.py", line 321, in build_deps cmake=cmake) File "D:\Codes\pytorch\tools\build_pytorch_libs.py", line 59, in build_caffe2 rerun_cmake) File "D:\Codes\pytorch\tools\setup_helpers\cmake.py", line 329, in generate self.run(args, env=my_env) File "D:\Codes\pytorch\tools\setup_helpers\cmake.py", line 141, in run check_call(command, cwd=self.build_dir, env=env) File "C:\Users\User\Anaconda3\Lib\subprocess.py", line 347, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['cmake', '-GNinja', '-DBUILD_PYTHON=True', '-DBUILD_TEST=True', '-DCMAKE_BUILD_TYPE=Release', '-DCMAKE_GENERATOR=Visual Studio 16 2019', '-DCMAKE_GENERATOR_TOOLSET_VERSION=14.11', '-DCMAKE_INSTALL_PREFIX=D:\\Codes\\pytorch\\torch', '-DCMAKE_PREFIX_PATH=C:\\Users\\User\\Anaconda3\\Lib\\site-packages', '-DNUMPY_INCLUDE_DIR=C:\\Users\\User\\Anaconda3\\Lib\\site-packages\\numpy\\core\\include', '-DPYTHON_EXECUTABLE=C:\\Users\\User\\Anaconda3\\python.exe', '-DPYTHON_INCLUDE_DIR=C:\\Users\\User\\Anaconda3\\include', '-DPYTHON_LIBRARY=C:\\Users\\User\\Anaconda3/libs/python37.lib', '-DTORCH_BUILD_VERSION=1.7.0a0+8376284', '-DUSE_NUMPY=True', 'D:\\Codes\\pytorch']' returned non-zero exit status 1. ``` What am I doing wrong? Any help is greatly appreciated ---
**Author:** ![Shisho\_Sama](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/shisho_sama/32/6926_2.png) [@Shisho\_Sama](https://discuss.pytorch.org/u/Shisho_Sama)\ **Post date:** [July 28, 2020, 7:02am UTC](https://discuss.pytorch.org/t/is-building-from-source-for-windows-up-to-date-subprocess-calledprocesserror-command-cmake-returned-non-zero-exit-status-1-error/90769/2 "2020-07-28T07:02:08Z")
Looking at this [link](https://discuss.pytorch.org/t/pytorch-build-from-source-on-windows/40288/9) everything built successfully! without even the need for any of these : ```auto :: [Optional] If you want to build with VS 2019 generator, please change the value in the next line to `Visual Studio 16 2019`. :: Note: This value is useless if Ninja is detected. However, you can force that by using `set USE_NINJA=OFF`. set CMAKE_GENERATOR=Visual Studio 16 2019 :: Read the content in the previous section carefully before you proceed. :: [Optional] If you want to override the underlying toolset used by Ninja and Visual Studio with CUDA, please run the following script block. :: "Visual Studio 2017 Developer Command Prompt" will be run automatically. :: Make sure you have CMake >= 3.12 before you do this when you use the Visual Studio generator. set CMAKE_GENERATOR_TOOLSET_VERSION=14.11 set DISTUTILS_USE_SDK=1 for /f "usebackq tokens=*" %i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -version [15^,16^) -products * -latest -property installationPath`) do call "%i\VC\Auxiliary\Build\vcvarsall.bat" x64 -vcvars_ver=%CMAKE_GENERATOR_TOOLSET_VERSION% :: [Optional] If you want to override the cuda host compiler set CUDAHOSTCXX=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\bin\HostX64\x64\cl.exe python setup.py install ``` I just ran : ```auto python setup.py build --cmake python setup.py install ``` and everything got built! However, after building everything, I cant seem to be able to find \ ! I read it on this issue [here](https://github.com/pytorch/pytorch/issues/5964#issuecomment-375698855) that building from source will make that but apparently this is not the case here! Any help is greatly appreciated ---
**Author:** ![Shisho\_Sama](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/shisho_sama/32/6926_2.png) [@Shisho\_Sama](https://discuss.pytorch.org/u/Shisho_Sama)\ **Post date:** [July 28, 2020, 8:45am UTC](https://discuss.pytorch.org/t/is-building-from-source-for-windows-up-to-date-subprocess-calledprocesserror-command-cmake-returned-non-zero-exit-status-1-error/90769/3 "2020-07-28T08:45:34Z")
OK, Here are my findings. First of all `include ` doesnt need building from source. its just in the a different path that is, in include directories, one need to add both : `$(SolutionDir)Dependencies\libtorch-debug-latest\libtorch\include; $(SolutionDir)Dependencies\libtorch-debug-latest\libtorch\include\torch\csrc\api\include;` and voila you are good to go!