function(add_loader_object name) cmake_parse_arguments( "ADD_LOADER_OBJECT" "ALIAS" # Option argument "SRC" # Single value arguments "DEPENDS;COMPILE_OPTIONS" # Multi value arguments ${ARGN} ) get_fq_target_name(${name} fq_target_name) get_fq_deps_list(fq_deps_list ${ADD_LOADER_OBJECT_DEPENDS}) if(ADD_LOADER_OBJECT_ALIAS) list(LENGTH ADD_LOADER_OBJECT_DEPENDS deps_size) if(NOT (${deps_size} EQUAL "1")) message(FATAL_ERROR "A loader object alias should have exactly one dependency.") endif() list(GET ADD_LOADER_OBJECT_DEPENDS 0 dep) get_fq_dep_name(fq_dep_name ${dep}) add_custom_target(${fq_target_name}) add_dependencies(${fq_target_name} ${fq_dep_name}) get_target_property(dep_objfile ${fq_dep_name} OBJECT_FILES) set_target_properties( ${fq_target_name} PROPERTIES "TARGET_TYPE" "${OBJECT_LIBRARY_TARGET_TYPE}" "OBJECT_FILES" "" "DEPS" "${fq_dep_name}" ) return() endif() add_object_library( ${name}.__objects__ SRCS ${ADD_LOADER_OBJECT_SRC} DEPENDS ${ADD_LOADER_OBJECT_DEPENDS} COMPILE_OPTIONS ${ADD_LOADER_OBJECT_COMPILE_OPTIONS} ) set(objfile ${LIBC_BUILD_DIR}/lib/${name}.o) add_custom_command( OUTPUT ${objfile} COMMAND cp $ ${objfile} DEPENDS $ ) add_custom_target( ${fq_target_name} DEPENDS ${objfile} ) set_target_properties( ${fq_target_name} PROPERTIES "TARGET_TYPE" "${OBJECT_LIBRARY_TARGET_TYPE}" "OBJECT_FILES" "" "DEPS" "${fq_target_name}.__objects__" ) endfunction() if(NOT (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_MACHINE})) message(STATUS "Skipping loader for target machine ${LIBC_TARGET_MACHINE}") return() endif() add_subdirectory(${LIBC_TARGET_MACHINE}) add_loader_object( crt1 ALIAS DEPENDS .${LIBC_TARGET_MACHINE}.crt1 )