[PATCH] biarch compiler support for i386

This allows the i386 architecture to be built on a system with a biarch
compiler that defaults to x86-64, merely by specifying ARCH=i386.

As previously discussed, this uses the equivalent logic to the ppc port.

Signed-Off-By: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index 1c36ca332a96..bf7c9ba709f3 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -17,6 +17,13 @@
 # 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
 #           Added support for GEODE CPU
 
+HAS_BIARCH      := $(call cc-option-yn, -m32)
+ifeq ($(HAS_BIARCH),y)
+AS              := $(AS) --32
+LD              := $(LD) -m elf_i386
+CC              := $(CC) -m32
+endif
+
 LDFLAGS         := -m elf_i386
 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
 LDFLAGS_vmlinux :=