linux-kernel - Re: Linux kernel cross-compilers

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Message-ID: <CAMo8BfKWFGxr6a48tFqGCourOcWOTO9rmCHy3Q05jR_QEuq=Cg@mail.gmail.com>
Date:	Fri, 16 Aug 2013 13:45:00 +0400
From:	Max Filippov <jcmvbkbc@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Linux kernel cross-compilers

>> Guenter,
>> can you share a complete build log with V=1?
>>
>
> http://roeck-us.net/linux/logs/make.xtensa.log.bad
> http://roeck-us.net/linux/logs/make.xtensa.log.ok
>
> Key difference: the failing command in the bad case is
>         xtensa-linux-objcopy -O elf32-xtensa-le
> and in the good case
>         xtensa-linux-objcopy -O elf32-xtensa-be
>
> Same compiler (4.6.3 from kernel.org), same configuration file, same command
> line.
> Configuration file is generated from defconfig, and the resulting .config
> file
> is the same in both cases.
>
> If I execute make and expicitly set BIG_ENDIAN=1 on the failing system as
> parameter to it,
> it works fine. If I set BIG_ENDIAN=0 on the passing system, it fails.
>
> I am puzzled. Guess there must be something different, but I have no idea
> what it might be.

What is the output of

echo -e __XTENSA_EB__ | xtensa-linux-gcc -E -

on the failing system?

-- 
Thanks.
-- Max
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