if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_OS}) add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_OS}) endif() add_entrypoint_object( wait ALIAS DEPENDS .${LIBC_TARGET_OS}.wait ) add_entrypoint_object( wait4 ALIAS DEPENDS .${LIBC_TARGET_OS}.wait4 ) add_entrypoint_object( waitpid ALIAS DEPENDS .${LIBC_TARGET_OS}.waitpid )