Install dependencies:
brew install libomp vulkan-headers glslang molten-vk shaderc vulkan-loader
Now Molten-VK is already above v1.4 -> therefore no need to get older version and manually apply PR2434.
git clone https://github.com/ggerganov/llama.cpp.git
cd llama.cpp
cmake -B build -DLLAMA_CURL=1 -DGGML_METAL=OFF -DGGML_VULKAN=ON