if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_ARCHITECTURE}) return() endif() add_subdirectory(${LIBC_TARGET_ARCHITECTURE}) add_header_library( linux_util HDRS io.h quick_exit.h syscall.h DEPENDS .${LIBC_TARGET_ARCHITECTURE}.linux_${LIBC_TARGET_ARCHITECTURE}_util libc.src.__support.common )