Allow building ggml as a separate shared lib #468
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…ing to stable-diffusion.cpp as a static library
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Hi, this PR allows the creation of two separate libs (e.g. ggml.dll and stable-diffusion.dll) via a build option (
SD_BUILD_SHARED_GGML_LIB). By default, it continues to make a single shared lib (like it does today).cmake -B build -DSD_BUILD_SHARED_LIBS=1 -DSD_BUILD_SHARED_GGML_LIB=1This option is useful when distributing updates to programs that use sd.cpp internally. For e.g. when targeting CUDA, with this PR, new versions of
stable-diffusion.cppcan be distributed with a 4 MB DLL update, instead of re-distributing 347 MB (that includes ggml with compiled ggml CUDA kernels).ggml doesn't need to change frequently, so there isn't much point wasting bandwidth redistributing the entire static-ly built ggml (with cuda), each time
stable-diffusion.dllneeds to be updated.I've tested this on Windows, Mac and Linux (Ubuntu).
Please let me know if this PR needs anything else, thanks!