You will need to install the following two libraries.

SDL2
Vulkan SDK

After you extract the SDL2 zip file you will need to modify on of their distributed files called sdl2-config.cmake. Lines 1, 4, and 5 should be adjusted as shown.

set(prefix ${sdl2_DIR}/../../..)
set(exec_prefix "${prefix}")
set(libdir "${exec_prefix}/lib")
set(SDL2_PREFIX ${sdl2_DIR}/../../..)
set(SDL2_EXEC_PREFIX ${sdl2_DIR}/../../..)
set(SDL2_LIBDIR "${exec_prefix}/lib")
set(SDL2_INCLUDE_DIRS "${prefix}/include/SDL2")
set(SDL2_LIBRARIES "-L${SDL2_LIBDIR}  -lmingw32 -lSDL2main -lSDL2 -mwindows")
string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)

Building

The following bash script will configure CMake for building CsPaint using MinGW. You will need to adjust the value for SDL2_DIR depending on where you installed it. The exact version of the Vulkan SDK export needs to match the one installed on your computer.

export SDL2_DIR=/c/SDL/x86_64-w64-mingw32/lib/cmake/SDL2
export VULKAN_SDK=/c/VulkanSDK/1.1.114.0
 
cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/c/cs_paint_lib /c/cs_paint

To build CsPaint and the Graphics Demo run the following command from a bash prompt.

ninja