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1function(add_startup_object name)2 cmake_parse_arguments(3 "ADD_STARTUP_OBJECT"4 "ALIAS" # Option argument5 "SRC" # Single value arguments6 "DEPENDS;COMPILE_OPTIONS" # Multi value arguments7 ${ARGN}8 )9 10 get_fq_target_name(${name} fq_target_name)11 if(ADD_STARTUP_OBJECT_ALIAS)12 get_fq_deps_list(fq_dep_list ${ADD_STARTUP_OBJECT_DEPENDS})13 add_library(${fq_target_name} ALIAS ${fq_dep_list})14 return()15 endif()16 17 add_object_library(18 ${name}19 SRCS ${ADD_STARTUP_OBJECT_SRC}20 COMPILE_OPTIONS ${ADD_STARTUP_OBJECT_COMPILE_OPTIONS}21 ${ADD_STARTUP_OBJECT_UNPARSED_ARGUMENTS}22 DEPENDS ${ADD_STARTUP_OBJECT_DEPENDS}23 )24 set_target_properties(25 ${fq_target_name}26 PROPERTIES27 OUTPUT_NAME ${name}.o28 )29 30 # Make an executable target of relocatable bitcode for clang if needed.31 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)32 add_executable(${fq_target_name}.exe $<TARGET_OBJECTS:${fq_target_name}>)33 set_target_properties(${fq_target_name}.exe PROPERTIES34 RUNTIME_OUTPUT_DIRECTORY ${LIBC_LIBRARY_DIR}35 RUNTIME_OUTPUT_NAME ${name}.o)36 target_link_options(${fq_target_name}.exe PRIVATE37 "-r" "-nostdlib" "-flto" "-Wl,--lto-emit-llvm")38 endif()39endfunction()40 41if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_ARCHITECTURE})42 add_subdirectory(${LIBC_TARGET_ARCHITECTURE})43else()44 message(WARNING "Cannot build 'crt1.o' for ${LIBC_TARGET_ARCHITECTURE} yet.")45 return()46endif()47 48add_startup_object(49 crt150 ALIAS51 DEPENDS52 .${LIBC_TARGET_ARCHITECTURE}.crt153)54 55add_custom_target(libc-startup)56set(startup_components crt1)57foreach(target IN LISTS startup_components)58 set(fq_target_name libc.startup.gpu.${target})59 add_dependencies(libc-startup ${fq_target_name})60 install(FILES $<TARGET_OBJECTS:${fq_target_name}>61 DESTINATION ${LIBC_INSTALL_LIBRARY_DIR}62 RENAME $<TARGET_PROPERTY:${fq_target_name},OUTPUT_NAME>63 COMPONENT libc)64endforeach()65