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