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Use osx deployment target to pick Metal version (#1595)

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* choose metal based on deployment target rather than system version

* nit

* unused compile def
This commit is contained in:
Awni Hannun 2024-11-18 19:16:49 -08:00 committed by GitHub
parent 073076ac7d
commit 9d7fa6b8e6
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2 changed files with 17 additions and 12 deletions
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27
CMakeLists.txt
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@ -89,25 +89,32 @@ elseif(MLX_BUILD_METAL)
# Throw an error if xcrun not found
execute_process(
COMMAND zsh "-c" "/usr/bin/xcrun -sdk macosx --show-sdk-version"
OUTPUT_VARIABLE MACOS_VERSION COMMAND_ERROR_IS_FATAL ANY)
OUTPUT_VARIABLE MACOS_SDK_VERSION COMMAND_ERROR_IS_FATAL ANY)
if(${MACOS_VERSION} LESS 14.0)
if(${MACOS_SDK_VERSION} LESS 14.0)
message(
FATAL_ERROR
"MLX requires macOS SDK >= 14.0 to be built with MLX_BUILD_METAL=ON")
endif()
message(STATUS "Building with SDK for macOS version ${MACOS_VERSION}")
message(STATUS "Building with macOS SDK version ${MACOS_SDK_VERSION}")
set(METAL_CPP_URL
https://developer.apple.com/metal/cpp/files/metal-cpp_macOS15_iOS18-beta.zip
)
# Get the metal version
execute_process(
COMMAND
zsh "-c"
"echo \"__METAL_VERSION__\" | xcrun -sdk macosx metal -E -x metal -P - | tail -1 | tr -d '\n'"
OUTPUT_VARIABLE MLX_METAL_VERSION COMMAND_ERROR_IS_FATAL ANY)
# Get the metal version. The mapping is maintained in section 1.6.10 of the
# Metal Shading Language Specification.
# https://developer.apple.com/metal/Metal-Shading-Language-Specification.pdf
if(${CMAKE_OSX_DEPLOYMENT_TARGET} GREATER_EQUAL 15.0)
set(MLX_METAL_VERSION "3.2")
elseif(${CMAKE_OSX_DEPLOYMENT_TARGET} GREATER_EQUAL 14.0)
set(MLX_METAL_VERSION "3.1")
elseif(${CMAKE_OSX_DEPLOYMENT_TARGET} GREATER_EQUAL 13.5)
set(MLX_METAL_VERSION "3.0")
else()
message(FATAL_ERROR "MLX requires macOS 13.5 or higher to build.")
endif()
message(STATUS "METAL VERSION" ${MLX_METAL_VERSION})
FetchContent_Declare(metal_cpp URL ${METAL_CPP_URL})
FetchContent_MakeAvailable(metal_cpp)
@ -115,8 +122,6 @@ elseif(MLX_BUILD_METAL)
mlx PUBLIC $<BUILD_INTERFACE:${metal_cpp_SOURCE_DIR}>
$<INSTALL_INTERFACE:include/metal_cpp>)
target_link_libraries(mlx PUBLIC ${METAL_LIB} ${FOUNDATION_LIB} ${QUARTZ_LIB})
add_compile_definitions("MLX_METAL_VERSION=${MLX_METAL_VERSION}")
endif()
if(MLX_BUILD_CPU)

2
mlx/backend/metal/CMakeLists.txt
View File

@ -14,7 +14,7 @@ function(make_jit_source SRC_FILE)
COMMAND
/bin/bash ${CMAKE_CURRENT_SOURCE_DIR}/make_compiled_preamble.sh
${CMAKE_CURRENT_BINARY_DIR}/jit ${CMAKE_C_COMPILER} ${PROJECT_SOURCE_DIR}
${SRC_FILE} "-DMLX_METAL_VERSION=${MLX_METAL_VERSION}"
${SRC_FILE}
DEPENDS make_compiled_preamble.sh kernels/${SRC_FILE}.h ${ARGN})
add_custom_target(${SRC_NAME} DEPENDS jit/${SRC_NAME}.cpp)
add_dependencies(mlx ${SRC_NAME})