Hello Feng Libo, 1) Are You building BaseTools? 2) Are You source edksetup.sh? We are use Ubuntu and GCC and we have not encountered such problems. Also You can check our topic about building universal payload. https://edk2.groups.io/g/devel/topic/universal_uefi_elf_payload/111543703 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#121186): https://edk2.groups.io/g/devel/message/121186 Mute This Topic: https://groups.io/mt/111636381/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-