1 core-y += arch/um/sys-i386/ arch/x86/crypto/
3 TOP_ADDR := $(CONFIG_TOP_ADDR)
9 ELF_FORMAT := elf32-$(SUBARCH)
10 OBJCOPYFLAGS := -O binary -R .note -R .comment -S
12 CHECKFLAGS += -D__i386__
14 ifeq ("$(origin SUBARCH)", "command line")
15 ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
16 KBUILD_CFLAGS += $(call cc-option,-m32)
17 KBUILD_AFLAGS += $(call cc-option,-m32)
18 LINK-y += $(call cc-option,-m32)
19 UML_OBJCOPYFLAGS += -F $(ELF_FORMAT)
21 export LDFLAGS HOSTCFLAGS HOSTLDFLAGS UML_OBJCOPYFLAGS
25 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
26 include $(srctree)/arch/x86/Makefile_32.cpu
28 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
29 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
31 # Prevent sprintf in nfsd from being converted to strcpy and resulting in
32 # an unresolved reference.
33 cflags-y += -ffreestanding
35 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
36 # a lot more stack due to the lack of sharing of stacklots. Also, gcc
37 # 4.3.0 needs -funit-at-a-time for extern inline functions.
38 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
39 echo $(call cc-option,-fno-unit-at-a-time); \
40 else echo $(call cc-option,-funit-at-a-time); fi ;)
42 KBUILD_CFLAGS += $(cflags-y)