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Subject[tip:x86/build] x86, boot: Restrict CFLAGS for hostprogs
Commit-ID:  d40f833630a1299fd377408dc8d8fac370d621b0
Gitweb: http://git.kernel.org/tip/d40f833630a1299fd377408dc8d8fac370d621b0
Author: Matt Fleming <matt.fleming@intel.com>
AuthorDate: Tue, 28 Feb 2012 13:37:23 +0000
Committer: H. Peter Anvin <hpa@zytor.com>
CommitDate: Tue, 28 Feb 2012 10:22:59 -0800

x86, boot: Restrict CFLAGS for hostprogs

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>
---
arch/x86/boot/Makefile | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 95365a8..3e02148 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -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 $@

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