#We #undef __x86_64__ for kernelspace, not for userspace where
#it's needed for headers to work!
ARCH_KERNEL_DEFINES = -U__$(SUBARCH)__
-CFLAGS += $(_extra_flags_)
+KBUILD_CFLAGS += $(_extra_flags_)
CHECKFLAGS += -m64
-AFLAGS += -m64
+KBUILD_AFLAGS += -m64
LDFLAGS += -m elf_x86_64
-CPPFLAGS += -m64
+KBUILD_CPPFLAGS += -m64
ELF_ARCH := i386:x86-64
ELF_FORMAT := elf64-x86-64