# Copyright 2003 - 2004 Pathscale, Inc
# Released under the GPL
-SUBARCH_LIBS := arch/um/sys-x86_64/
+libs-y += arch/um/sys-x86_64/
START := 0x60000000
-CFLAGS += -U__$(SUBARCH)__ -fno-builtin $(STUB_CFLAGS)
-ARCH_USER_CFLAGS := -D__x86_64__
+#We #undef __x86_64__ for kernelspace, not for userspace where
+#it's needed for headers to work!
+CFLAGS += -U__$(SUBARCH)__ -fno-builtin
+USER_CFLAGS += -fno-builtin
+CHECKFLAGS += -m64
ELF_ARCH := i386:x86-64
ELF_FORMAT := elf64-x86-64