core-y += arch/um/sys-i386/ arch/x86/crypto/ TOP_ADDR := $(CONFIG_TOP_ADDR) START := 0x8048000 LDFLAGS += -m elf_i386 ELF_ARCH := $(SUBARCH) ELF_FORMAT := elf32-$(SUBARCH) OBJCOPYFLAGS := -O binary -R .note -R .comment -S HEADER_ARCH := x86 CHECKFLAGS += -D__i386__ ifeq ("$(origin SUBARCH)", "command line") ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)") KBUILD_CFLAGS += $(call cc-option,-m32) KBUILD_AFLAGS += $(call cc-option,-m32) LINK-y += $(call cc-option,-m32) UML_OBJCOPYFLAGS += -F $(ELF_FORMAT) export LDFLAGS HOSTCFLAGS HOSTLDFLAGS UML_OBJCOPYFLAGS endif endif # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y. include $(srctree)/arch/x86/Makefile_32.cpu # prevent gcc from keeping the stack 16 byte aligned. Taken from i386. cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) # Prevent sprintf in nfsd from being converted to strcpy and resulting in # an unresolved reference. cflags-y += -ffreestanding # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use # a lot more stack due to the lack of sharing of stacklots. Also, gcc # 4.3.0 needs -funit-at-a-time for extern inline functions. KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \ echo $(call cc-option,-fno-unit-at-a-time); \ else echo $(call cc-option,-funit-at-a-time); fi ;) KBUILD_CFLAGS += $(cflags-y)