linux-kernel - Re: [PATCH 1/1] OpenRISC: Fix kernel build problem on OpenRISC

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Message-ID: <20150512200743.GA6155@roeck-us.net>
Date:	Tue, 12 May 2015 13:07:43 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	anees <rean12is@...il.com>
Cc:	Jonas Bonn <jonas@...thpole.se>, linux@...ts.openrisc.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] OpenRISC: Fix kernel build problem on OpenRISC

On Tue, May 12, 2015 at 03:45:21PM +0200, anees wrote:
> Kernel build fails with error "target elf32-or32 not found"
> This is due to the change in OpenRISC compiler prefix from "or12"
> to "or1k". Add config options that set architecture output format
> default to "or1k" but also allow user to select older prefix.
> 
> Tested with gcc version 4.9.1 uclibc
> 
> Signed-off-by: anees <rean12is@...il.com>
> ---
>  arch/openrisc/Kconfig              | 12 ++++++++++++
>  arch/openrisc/kernel/vmlinux.lds.S |  6 +++---
>  2 files changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
> index e5a693b..c7fe7c8 100644
> --- a/arch/openrisc/Kconfig
> +++ b/arch/openrisc/Kconfig
> @@ -75,6 +75,18 @@ config OPENRISC_BUILTIN_DTB
>          string "Builtin DTB"
>          default ""
>  
> +config OUTPUT_FORMAT_TYPE
> +	string "Architecture output format type"
> +	default "or1k"
> +	help
> +	  Write "or12" if building kernel against an older toolchain
> +	  else leave the default (or1k)
> +
That means I'll have to use different toolchains for different kernel
versions, or hand-edit default configuration files to able to work
with the same toolchain. Both is, from a testing perspective,
quite annoying.

Maybe I should simply stop testing older kernels for openrisc
after this patch has been merged; that would be much easier.
Jonas, is that ok with you ?

Side note: I didn't drop it from Cc:, but the openrisc.net domain
name expired and appears to be for sale.

Guenter
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