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Subject: Re: 440 ebony patch seems to have broken 85xx build on powerpc.git
From: Josh Boyer <jwboyer@linux.vnet.ibm.com>
To: Segher Boessenkool <segher@kernel.crashing.org>
In-Reply-To: <2ded9f19fbaf49a89ed6e32de87f5828@kernel.crashing.org>
References: <4655C7A6.2050606@mvista.com>
	<2ded9f19fbaf49a89ed6e32de87f5828@kernel.crashing.org>
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Date: Thu, 24 May 2007 14:39:03 -0500
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On Thu, 2007-05-24 at 21:05 +0200, Segher Boessenkool wrote:
> > $(obj)/44x.o: BOOTCFLAGS += -Wa,-mbooke
> > $(obj)/ebony.o: BOOTCFLAGS += -Wa,-mbooke
> 
> Probably -Wa,-m440 works better.  However...
> 
> >   /opt/montavista/cge/devkit/ppc/85xx/bin/ppc_85xx-gcc -m32
> > -Wp,-MD,arch/powerpc/boot/.ebony.o.d -Wall -Wstrict-prototypes -O2
> > -fomit-frame-pointer -fno-builtin -nostdinc -isystem
> > /opt/montavista/cge/devkit/ppc/85xx/bin/../lib/gcc/powerpc-montavista- 
> > linux-gnuspe/4.2.0/include
> > -fPIC -fno-stack-protector -Iarch/powerpc/boot
> > -I/home/djiang/community/git-repos/tmp/ppc-master/arch/powerpc/boot  
> > -Wa,-mbooke
> > -c -o arch/powerpc/boot/ebony.o arch/powerpc/boot/ebony.c
> 
> Nothing is telling GCC what CPU to compile for, so it
> will just use the compiler's default, which very likely
> is not what you want.  For files that will only ever
> be used on 440, the correct flags are -mcpu=440 -Wa,-m440 .

We could add that to the per-file flags already, right?

josh