Build breakage with omap2plus_defconfig

[Felipe Balbi]

Hi,

On Fri, Jan 07, 2011 at 02:38:59PM +0200, Felipe Balbi wrote:
> Today's Linus' tree (01539ba2a706ab7d35fc0667dff919ade7f87d63) fails to
> build with omap2plus_defconfig:
> 
> $ crossmake
>   CHK     include/linux/version.h
>   CHK     include/generated/utsrelease.h
> make[1]: `include/generated/mach-types.h' is up to date.
>   CALL    scripts/checksyscalls.sh
>   CHK     include/generated/compile.h
>   CC      arch/arm/kernel/swp_emulate.o
> /tmp/cc2V7p5j.s: Assembler messages:
> /tmp/cc2V7p5j.s:161: Error: selected processor does not support ARM mode `ldrexb r3,[r4]'
> /tmp/cc2V7p5j.s:162: Error: selected processor does not support ARM mode `strexb r0,r2,[r4]'
> make[1]: *** [arch/arm/kernel/swp_emulate.o] Error 1
> make: *** [arch/arm/kernel] Error 2
> 
> Compiler is:
> 
> $ arm-linux-gcc --version
> arm-linux-gcc (Sourcery G++ Lite 2010q1-202) 4.4.1
> Copyright (C) 2009 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> 
> I'm downloading Sourcery G++ Lite 2010.09-50 for ARM GNU/Linux to check
> if it's not a bug on the compiler.

Just tested with newer compiler and it also fails to compile.

$ arm-linux-gcc --version
arm-linux-gcc (Sourcery G++ Lite 2010.09-50) 4.5.1
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

-- 
balbi