linux-kernel - Re: [PATCH] ARC: Explicitly specify OUTPUT

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Message-ID: <05b33c2b-6fb4-6a51-c52b-a0b1012a1000@synopsys.com>
Date:   Fri, 1 Jun 2018 09:12:14 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Cupertino Miranda" <Cupertino.Miranda@...opsys.com>,
        Claudiu Zissulescu <Claudiu.Zissulescu@...opsys.com>
Subject: Re: [PATCH] ARC: Explicitly specify OUTPUT_FORMAT in the linker
 script

On 06/01/2018 03:49 AM, Alexey Brodkin wrote:
> It might be a good idea to explicitly specify BFD format
> depending on -EB/-EL option passed to the linker and not rely on
> default behavior as we have now.

What exactly is the problem we are trying to solve here ?
Is this preventive or did you run into something - if latter can u explain it here
please ?

> Description of the OUTPUT_FORMAT command is available here:
> https://sourceware.org/binutils/docs/ld/Format-Commands.html#Format-Commands
>
> Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com>
> Cc: Cupertino Miranda <cmiranda@...opsys.com>
> Cc: Claudiu Zissulescu <claziss@...opsys.com>
> ---
>  arch/arc/kernel/vmlinux.lds.S | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S
> index f35ed578e007..0a1affc56d76 100644
> --- a/arch/arc/kernel/vmlinux.lds.S
> +++ b/arch/arc/kernel/vmlinux.lds.S
> @@ -11,6 +11,7 @@
>  #include <asm/page.h>
>  #include <asm/thread_info.h>
>  
> +OUTPUT_FORMAT("elf32-littlearc", "elf32-bigarc", "elf32-littlearc")
>  OUTPUT_ARCH(arc)
>  ENTRY(res_service)
>