Building this SDK

Requirements

Windows

Windows 7 or newer
Visual Studio 2019 or newer

Linux

GCC 9 or newer (C++17 support or newer required)
Packages:
- g++-multilib
- libgl1-mesa-dev (or an equivalent package that provides the OpenGL headers)

Building

The TWHL tutorial on setting up the Half-Life SDK for C++ mod development explains how to set up the source code and how to configure the mod installation: https://twhl.info/wiki/page/Half-Life_Programming_-_Getting_Started