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function(add_startup_object name)
cmake_parse_arguments(
"ADD_STARTUP_OBJECT"
"ALIAS" # Option argument
"SRC" # Single value arguments
"DEPENDS;COMPILE_OPTIONS" # Multi value arguments
${ARGN}
)
get_fq_target_name(${name} fq_target_name)
if(ADD_STARTUP_OBJECT_ALIAS)
get_fq_deps_list(fq_dep_list ${ADD_STARTUP_OBJECT_DEPENDS})
add_library(${fq_target_name} ALIAS ${fq_dep_list})
return()
endif()
add_object_library(
${name}
SRCS ${ADD_STARTUP_OBJECT_SRC}
DEPENDS ${ADD_STARTUP_OBJECT_DEPENDS}
COMPILE_OPTIONS ${ADD_STARTUP_OBJECT_COMPILE_OPTIONS}
)
set_target_properties(
${fq_target_name}
PROPERTIES
OUTPUT_NAME ${name}.o
)
endfunction()
if(LIBC_GPU_TARGET_ARCHITECTURE_IS_AMDGPU)
add_subdirectory(amdgpu)
add_startup_object(
crt1
ALIAS
DEPENDS
.amdgpu.crt1
)
elseif(LIBC_GPU_TARGET_ARCHITECTURE_IS_NVPTX)
add_subdirectory(nvptx)
add_startup_object(
crt1
ALIAS
DEPENDS
.nvptx.crt1
)
else()
# Skip building the startup code if there are no supported GPUs.
message(STATUS "Skipping startup for gpu target, no GPUs were detected")
return()
endif()
add_custom_target(libc-startup)
set(startup_components crt1)
foreach(target IN LISTS startup_components)
set(fq_target_name libc.startup.gpu.${target})
add_dependencies(libc-startup ${fq_target_name})
endforeach()
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