I had an issue of CMake configuration failed

[ajay9438]

              (privateGPT) C:\Users\AJAY\Desktop\PrivateGpt>$env:CMAKE_ARGS = "-DLLAMA_BLAS=ON -DLLAMA_BLAS_VENDOR=OpenBLAS"
The filename, directory name, or volume label syntax is incorrect.

(privateGPT) C:\Users\AJAY\Desktop\PrivateGpt>pip install llama-cpp-python
Collecting llama-cpp-python
  Using cached llama_cpp_python-0.2.20.tar.gz (8.7 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: typing-extensions>=4.5.0 in c:\users\ajay\anaconda3\envs\privategpt\lib\site-packages (from llama-cpp-python) (4.8.0)
Requirement already satisfied: numpy>=1.20.0 in c:\users\ajay\anaconda3\envs\privategpt\lib\site-packages (from llama-cpp-python) (1.26.0)
Collecting diskcache>=5.6.1 (from llama-cpp-python)
  Using cached diskcache-5.6.3-py3-none-any.whl.metadata (20 kB)
Using cached diskcache-5.6.3-py3-none-any.whl (45 kB)
Building wheels for collected packages: llama-cpp-python
  Building wheel for llama-cpp-python (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Building wheel for llama-cpp-python (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [20 lines of output]
      *** scikit-build-core 0.6.1 using CMake 3.27.7 (wheel)
      *** Configuring CMake...
      2023-11-30 18:40:30,114 - scikit_build_core - WARNING - Can't find a Python library, got libdir=None, ldlibrary=None, multiarch=None, masd=None
      loading initial cache file C:\Users\AJAY\AppData\Local\Temp\tmpkh6aqsh2\build\CMakeInit.txt
      -- Building for: NMake Makefiles
      CMake Error at CMakeLists.txt:3 (project):
        Running

         'nmake' '-?'

        failed with:

         The system cannot find the file specified

      CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
      CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
      -- Configuring incomplete, errors occurred!

      *** CMake configuration failed
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for llama-cpp-python
Failed to build llama-cpp-python
ERROR: Could not build wheels for llama-cpp-python, which is required to install pyproject.toml-based projects

Originally posted by @ajay9438 in https://github.com/scikit-build/scikit-build-core/issues/374#issuecomment-1833780183

[henryiii]

Do you have MSVC inslalled? It looks like you don’t have nmake, which I think means you don’t have a compiler.

[ajay9438]

@henryiii Yes i have installed MSVC and I have installed MinGW.

[henryiii]

Then you probably need to run in the MSVC terminal, or source the MSVC activation script before building. See https://learn.microsoft.com/en-us/cpp/build/building-on-the-command-line?view=msvc-170. CMake does try to find your MSVC install by looking at the registry, but it seems like it's not able to find it. It might not be a bad idea to add the CMake component if it's not already installed (https://learn.microsoft.com/en-us/cpp/build/cmake-projects-in-visual-studio?view=msvc-170), but scikit-build-core is able to request a copy of CMake from PyPI if one isn't present.

[henryiii]

(I'm not an expert on Windows setup, @thewtex or @jcfr might know more). I don't think there's something we are missing that would make it easier on our end, but not sure of that.

[thewtex]

Hi @ajay9438 , looking at your screenshot, I see the MS Visual C++ Redistributables and MS Visual Studio Code, but I do not see MS Visual Studio (yes, the names can be confusing). You will want to download and install the Microsoft Visual Studio Community Edition and enable C++ support in the installer.