Requirements

1. VS C++ 2019
2. Nvidia Cuda Toolkit 12.1
3. SDL2
4. Whisper.cpp Source
5. Git
6. CMake
If your visual studio did not detected by the Nvidia Toolkit make sure to copy following directory content to the next one manually. You may need to adjust the path depending on your specific VS version.

C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.1\extras\visual_studio_integration\MSBuildExtensions
C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Microsoft\VC\v160\BuildCustomizations

You need to also install SDL2, this only required for streaming option. You have to install the SDL2, building locally and reference locally will cause the whisper compile process to fail.

cd SDL2
cmake -B build
cmake --build build --config Release --target install

Build

git clone https://github.com/ggml-org/whisper.cpp.git
cd whisper.cpp
cmake -B build -DWHISPER_SDL2=ON -DGGML_CUDA=1 -DWHISPER_BUILD_EXAMPLES=1 -DSDL2_DIR="SDL2/" -DCMAKE_PREFIX_PATH="SDL2/cmake"

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1. GitHub – Can’t build on Windows – No CUDA toolset found error 
2. LibSDL Wiki: SDL2 Installation
3. Can’t build stream example on Windows