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cmake: add explicit metal version options #6370

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merged 2 commits into from
Mar 29, 2024
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cmake: add explicit metal version options #6370

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9091980
cmake: add explicit metal version options
mattjcly Mar 28, 2024
82cc370
Update CMakeLists.txt
ggerganov Mar 29, 2024
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13 changes: 13 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,9 @@ option(LLAMA_METAL "llama: use Metal"
option(LLAMA_METAL_NDEBUG "llama: disable Metal debugging" OFF)
option(LLAMA_METAL_SHADER_DEBUG "llama: compile Metal with -fno-fast-math" OFF)
option(LLAMA_METAL_EMBED_LIBRARY "llama: embed Metal library" OFF)
set(LLAMA_METAL_MACOSX_VERSION_MIN "" CACHE STRING
"llama: metal minimum macOS version")
set(LLAMA_METAL_STD "" CACHE STRING "llama: metal standard version (-std flag)")
option(LLAMA_KOMPUTE "llama: use Kompute" OFF)
option(LLAMA_MPI "llama: use MPI" OFF)
option(LLAMA_QKK_64 "llama: use super-block size of 64 for k-quants" OFF)
Expand Down Expand Up @@ -250,6 +253,16 @@ if (LLAMA_METAL)
set(XC_FLAGS -O3)
endif()

# Append macOS metal versioning flags
if (LLAMA_METAL_MACOSX_VERSION_MIN)
message(STATUS "Adding -mmacosx-version-min=${LLAMA_METAL_MACOSX_VERSION_MIN} flag to metal compilation")
list(APPEND XC_FLAGS -mmacosx-version-min=${LLAMA_METAL_MACOSX_VERSION_MIN})
endif()
if (LLAMA_METAL_STD)
message(STATUS "Adding -std=${LLAMA_METAL_STD} flag to metal compilation")
list(APPEND XC_FLAGS -std=${LLAMA_METAL_STD})
endif()

add_custom_command(
OUTPUT ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/default.metallib
COMMAND xcrun -sdk macosx metal ${XC_FLAGS} -c ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/ggml-metal.metal -o ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/ggml-metal.air
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