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| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-23 22:37:23 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-23 22:37:23 +0200 |
| commit | bec2c48c2045ca467d07bba54783318b8672bda7 (patch) | |
| tree | 69eb8e5051feb08235fd1a0cd7bba202e967e2e0 /arch/i386 | |
| parent | x86: unify div64{,_32,_64}.h (diff) | |
| download | linux-bec2c48c2045ca467d07bba54783318b8672bda7.tar.xz linux-bec2c48c2045ca467d07bba54783318b8672bda7.zip | |
x86: Add BITS to allow simple Makefile sharing
Preperatory patch to simplify the sharing of Makefiles in
arch/x86.
Linus came up with this during a discussion about the ugliness of
ifeq($CONFIG_X86_32),y) and obj-$(CONFIG_X86_32) in the shared
Makefiles.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/i386/Makefile b/arch/i386/Makefile index b81cb64d48e5..f5b9a37def8b 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -20,6 +20,12 @@ # Fill in SRCARCH SRCARCH := x86 +# 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 +BITS := 32 +export BITS + HAS_BIARCH := $(call cc-option-yn, -m32) ifeq ($(HAS_BIARCH),y) AS := $(AS) --32 |