[Fixed] Error while installing python package: llama-cpp-python – Python

The Problem:

I am trying to install the python package "llama-cpp-python" using pip, but I am getting an error during the installation. The error message mentions "subprocess-exited-with-error" and "CMAKE_C_COMPILER not set". I have tried various solutions, such as installing CMake, but none of them have worked. What is the cause of this error, and how can I successfully install the package?

The Solutions:

Solution 1: Install Desktop C++ Block with Visual Studio

To resolve the issue while installing the llama-cpp-python package, follow these steps:

1. Open the Visual Studio Installer.
2. Click on Modify.
3. Check the Desktop development with C++ checkbox.
4. Click on Modify to start the installation.

You can also install the Windows 10 SDK to ensure compatibility.

5. After completing the installation, run the following command:

   pip install llama-cpp-python

This command should build successfully without any errors.

Solution 2: Install gcc and g++

The error message "CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage", "CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage" indicates that the gcc and g++ are not installed.

To install gcc and g++:

• For Ubuntu:

sudo apt update
sudo apt upgrade
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install gcc-11 g++-11

• For CentOS:

yum install scl-utils
yum install centos-release-scl
# find devtoolset-11
yum list all --enablerepo='centos-sclo-rh' | grep "devtoolset"

yum install -y devtoolset-11-toolchain

• For Amazon Linux 2023:

sudo dnf install gcc
sudo dnf install g++

Video Explanation: