From: Sven Luther <sven.luther@wanadoo.fr>

The following kind of calls currently fails :

  make ARCH=ppc64 CC="gcc-3.4"

Since the code for detecting a biarch compiler and adding the needed 64bit
magic argument fails if the AS/LD/CC commands are overriden in the command
line.

The attached patch fixes this by using the make override and += directive,
but i am not 100% sure this will work without gmake, as i am no Makefile
expert.

Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 arch/ppc64/Makefile |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff -puN arch/ppc64/Makefile~ppc64-override-command-line-as-ld-cc-variables-when-adding-m64-and-co-for-biarch-compilers arch/ppc64/Makefile
--- 25/arch/ppc64/Makefile~ppc64-override-command-line-as-ld-cc-variables-when-adding-m64-and-co-for-biarch-compilers	Fri May 27 17:04:55 2005
+++ 25-akpm/arch/ppc64/Makefile	Fri May 27 17:04:55 2005
@@ -35,9 +35,9 @@ CROSS32AS	:= $(AS) -a32
 CROSS32LD	:= $(LD) -m elf32ppc
 CROSS32OBJCOPY	:= $(OBJCOPY)
 endif
-AS              := $(AS) -a64
-LD              := $(LD) -m elf64ppc
-CC		:= $(CC) -m64
+override AS	+= -a64
+override LD	+= -m elf64ppc
+override CC	+= -m64
 endif
 
 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
_