[PATCH] ppc64 & powerpc: Check whether the native CC can use -m64

[Daniel Ostrow]

On 17:55 Wed 09 Nov     , Arnd Bergmann wrote:
> On Middeweken 09 November 2005 16:56, Daniel Ostrow wrote:
> > On 11:43 Wed 09 Nov     , Arnd Bergmann wrote:
> > > On Dinsdag 08 November 2005 20:14, Daniel Ostrow wrote:
> > > > +CC     := $(shell if $(CC) -m64 -S -o /dev/null -xc /dev/null >/dev/null
> > > > 2>&1; then echo $(CC); else echo powerpc64-linux-gcc; fi )
> > > 
> > > You should be using $(call cc-option,-m64) for this, like we do in the
> > > rest of the Makefile.
> > > 
> > > 	Arnd <><
> > 
> > Is something like the following better?
> 
> I find that much more readable, yes.
> 
> However, I first misunderstood what you are really trying to do.
> I think that if you want to use a cross compiler, you normally
> should set $(CROSS_COMPILE) to powerpc64-linux- instead of
> only changing $(CC) but not the other tools, right?
> 
> 	Arnd <><
> 

Actually yes I like that *much* better...good call :)

New diff attached.

Signed-off-by: Daniel Ostrow <dostrow at gentoo.org>

diff -Naupr powerpc-merge.orig/arch/powerpc/Makefile powerpc-merge/arch/powerpc/Makefile
--- powerpc-merge.orig/arch/powerpc/Makefile	2005-11-08 10:18:18.000000000 -0800
+++ powerpc-merge/arch/powerpc/Makefile	2005-11-09 09:06:28.000000000 -0800
@@ -18,6 +18,11 @@ ifeq ($(CONFIG_PPC64),y)
 OLDARCH	:= ppc64
 SZ	:= 64
 
+NATIVE64	:= $(call cc-option-yn, -m64)
+ifeq ($(NATIVE64),n)
+CROSS_COMPILE	:= powerpc64-unknown-linux-gnu-
+endif
+
 # Set default 32 bits cross compilers for vdso and boot wrapper
 CROSS32_COMPILE ?=
 
diff -Naupr powerpc-merge.orig/arch/ppc64/Makefile powerpc-merge/arch/ppc64/Makefile
--- powerpc-merge.orig/arch/ppc64/Makefile	2005-11-08 10:07:06.000000000 -0800
+++ powerpc-merge/arch/ppc64/Makefile	2005-11-09 09:07:16.000000000 -0800
@@ -15,6 +15,11 @@
 
 KERNELLOAD	:= 0xc000000000000000

+NATIVE64        := $(call cc-option-yn, -m64)
+ifeq ($(NATIVE64),n)
+CROSS_COMPILE      := powerpc64-unknown-linux-gnu-
+endif
+
 # Set default 32 bits cross compilers for vdso and boot wrapper
 CROSS32_COMPILE ?=