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x86, boot: Restrict CFLAGS for hostprogs

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Currently tools/build has access to all the kernel headers in
$(srctree). This is unnecessary and could potentially allow
tools/build to erroneously include kernel headers when it should only
be including userspace-exported headers.

Unfortunately, mkcpustr still needs access to some of the asm kernel
headers, so explicitly special case that hostprog.

Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/1330436245-24875-5-git-send-email-matt@console-pimps.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Matt Fleming 2012-02-28 13:37:23 +00:00 committed by H. Peter Anvin
parent 12871c5683
commit d40f833630
1 changed files with 3 additions and 2 deletions
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5
arch/x86/boot/Makefile
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@ -37,8 +37,9 @@ setup-y += video-bios.o
targets += $(setup-y)
hostprogs-y := mkcpustr tools/build
HOST_EXTRACFLAGS += $(LINUXINCLUDE)
HOSTCFLAGS_mkcpustr.o := -I$(srctree)/arch/$(SRCARCH)/include
HOST_EXTRACFLAGS += -I$(objtree)/include -I$(srctree)/tools/include \
-include $(srctree)/include/linux/kconfig.h
$(obj)/cpu.o: $(obj)/cpustr.h
quiet_cmd_cpustr = CPUSTR $@