mlx/cmake/extension.cmake
Jack Wind 4cbe605214
Feat: Allow per-target Metal debug flags (#2201)
* feat: allow per-target Metal debug flags

* formatting fix
2025-05-20 10:22:26 -07:00

51 lines
1.8 KiB
CMake

include(CMakeParseArguments)
# clang format off
#
# ##############################################################################
# Build metal library
#
# Adds a custom target ${TARGET} to build ${OUTPUT_DIRECTORY}/{TITLE}.metallib
# from list ${SOURCES}, including list ${INCLUDE_DIRS}, depends on list ${DEPS}
#
# Args: TARGET: Custom target to be added for the metal library TITLE: Name of
# the .metallib OUTPUT_DIRECTORY: Where to place ${TITLE}.metallib SOURCES: List
# of source files INCLUDE_DIRS: List of include dirs DEPS: List of dependency
# files (like headers) DEBUG: Boolean, if true, enables debug compile options
# for this specific library. If not provided, uses global MLX_METAL_DEBUG.
#
# clang format on
macro(mlx_build_metallib)
# Parse args
set(oneValueArgs TARGET TITLE OUTPUT_DIRECTORY DEBUG)
set(multiValueArgs SOURCES INCLUDE_DIRS DEPS)
cmake_parse_arguments(MTLLIB "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
# Set output
set(MTLLIB_BUILD_TARGET "${MTLLIB_OUTPUT_DIRECTORY}/${MTLLIB_TITLE}.metallib")
# Collect compile options
set(MTLLIB_COMPILE_OPTIONS -Wall -Wextra -fno-fast-math -Wno-c++17-extensions)
if(MLX_METAL_DEBUG OR MTLLIB_DEBUG)
set(MTLLIB_COMPILE_OPTIONS ${MTLLIB_COMPILE_OPTIONS} -gline-tables-only
-frecord-sources)
endif()
# Prepare metallib build command
add_custom_command(
OUTPUT ${MTLLIB_BUILD_TARGET}
COMMAND
xcrun -sdk macosx metal
"$<LIST:TRANSFORM,${MTLLIB_INCLUDE_DIRS},PREPEND,-I>"
${MTLLIB_COMPILE_OPTIONS} ${MTLLIB_SOURCES} -o ${MTLLIB_BUILD_TARGET}
DEPENDS ${MTLLIB_DEPS} ${MTLLIB_SOURCES}
COMMAND_EXPAND_LISTS
COMMENT "Building ${MTLLIB_TITLE}.metallib"
VERBATIM)
# Add metallib custom target
add_custom_target(${MTLLIB_TARGET} DEPENDS ${MTLLIB_BUILD_TARGET})
endmacro(mlx_build_metallib)