Re: [PATCH v2] next: openrisc: Fix build

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On Fri, Sep 26, 2014 at 07:51:49PM +0200, Jonas Bonn wrote:
> On 09/26/2014 06:05 PM, Guenter Roeck wrote:
> > openrisc:defconfig fails to build in next-20140926 with the following error.
> >
> > In file included from arch/openrisc/kernel/signal.c:31:0:
> > ./arch/openrisc/include/asm/syscall.h: In function 'syscall_get_arch':
> > ./arch/openrisc/include/asm/syscall.h:77:9: error: 'EM_OPENRISC' undeclared
> >
> > Fix by moving EM_OPENRISC to include/uapi/linux/elf-em.h.
> >
> > Fixes: ce5d112827e5 ("ARCH: AUDIT: implement syscall_get_arch for all arches")
> > Cc: Eric Paris <eparis@xxxxxxxxxx>
> > Cc: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>
> > Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> > Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> > ---
> > v2: Only move EM_OPENRISC.
> >
> > Another possible solution for the problem would be to include asm/elf.h
> > in arch/openrisc/kernel/signal.c. I had actually submitted a patch with
> > that fix back in August (maybe that is where I remembered the problem from).
> > Wonder what happened with that patch.
> >
> > Would it make sense to drop EM_OR32 and replace it with EM_OPENRISC where
> > it is used ? binutils seems to suggest that EM_OPENRISC is the "official"
> > definition.
> 
> Do we even use EM_OR32?  Will the kernel build with the old toolchain if
> we drop it?  If yes, drop it altogether... I don't recall the details as
> to why we kept that define around at all.  And really, why bother
> supporting the old toolchain at all... it's been at least two or three
> years since EM_OPENRISC was added, hopefully people have moved on.  If
> users want to upgrade their kernel, they can update the toolchain, too,
> at this point.
> 

EM_OPENRISC was added about ten years ago, and when the OR32 things in binutils
was removed in favour for OR1K earlier this year,
EM_OR1K was added as an alias to EM_OPENRISC.

With that said, I'm putting in a vote for removing EM_OR32 as well.

Stefan
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