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| author | David Woodhouse <David.Woodhouse@intel.com> | 2014-01-08 11:21:20 +0000 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-01-22 04:21:45 -0800 |
| commit | 1c678da3bd1339299ab667af68cad5032367fb1c (patch) | |
| tree | d4df9e4d44b85ab6a171bdcad5fb5b7c588228c5 /arch/x86/Makefile | |
| parent | 214a88768d34079b70e0f2ba37b91a3b717fddbb (diff) | |
| download | lwn-1c678da3bd1339299ab667af68cad5032367fb1c.tar.gz lwn-1c678da3bd1339299ab667af68cad5032367fb1c.zip | |
x86: Remove duplication of 16-bit CFLAGS
Define them once in arch/x86/Makefile instead of twice.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Link: http://lkml.kernel.org/r/1389180083-23249-1-git-send-email-David.Woodhouse@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/Makefile')
| -rw-r--r-- | arch/x86/Makefile | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 57d021507120..83e67d5c9db3 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -11,6 +11,20 @@ else KBUILD_DEFCONFIG := $(ARCH)_defconfig endif +# How to compile the 16-bit code. Note we always compile for -march=i386; +# that way we can complain to the user if the CPU is insufficient. +REALMODE_CFLAGS := -m32 -g -Os -D__KERNEL__ -DDISABLE_BRANCH_PROFILING \ + -Wall -Wstrict-prototypes -march=i386 -mregparm=3 \ + -include $(srctree)/arch/x86/boot/code16gcc.h \ + -fno-strict-aliasing -fomit-frame-pointer -fno-pic \ + -mno-mmx -mno-sse \ + $(call cc-option, -ffreestanding) \ + $(call cc-option, -fno-toplevel-reorder,\ + $(call cc-option, -fno-unit-at-a-time)) \ + $(call cc-option, -fno-stack-protector) \ + $(call cc-option, -mpreferred-stack-boundary=2) +export REALMODE_CFLAGS + # BITS is used as extension for files which are available in a 32 bit # and a 64 bit version to simplify shared Makefiles. # e.g.: obj-y += foo_$(BITS).o |