linux-kernel - Re: loadable kernel module link failure - endianness incompatible with that of the selected emulation

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Message-ID: <4B564496.3090509@caviumnetworks.com>
Date:	Tue, 19 Jan 2010 15:47:34 -0800
From:	David Daney <ddaney@...iumnetworks.com>
To:	myuboot@...tmail.fm
CC:	linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org
Subject: Re: loadable kernel module link failure -  endianness incompatible
 with that of the selected emulation

myuboot@...tmail.fm wrote:
> I got a link error when compiling 2 loadable kernel modules -
> "endianness incompatible with that of the selected emulation". 
> 
> But both kernel and the kernel modules of error are in big endian. I
> don't know what I should check or fix. Any suggestions? I checked the
> endianess of the kernel by checking the elf header of vmlinux file, is
> that the right way to do it?
> 
> Below are the error info and the readelf output, showing both the kernel
> and a kernel module are in big endian.
> Thanks for your help. Andrew
> 
> 1) error log 
> make -C /home/root123/sources/kernel/linux
> CROSS_COMPILE=""/home/root123/sources/gcc3.4.3-be"/bin/mips-linux-"
> M=/home/root123/sources/sdk/platform/src/linux/mxp/src modules    
> 
>   LD [M]  /home/root123/sources/sdk/platform/src/linux/mxp/src/mxpmod.o
> /home/root123/sources/gcc3.4.3-be/bin/mips-linux-ld:
> /home/root123/sources/sdk/platform/src/linux/mxp/src/mmxpcore.o:
> compiled for a big endian system and target is little endian
> /home/root123/sources/gcc3.4.3-be/bin/mips-linux-ld:
> /home/root123/sources/sdk/platform/src/linux/mxp/src/mmxpcore.o:
> endianness incompatible with that of the selected emulation
> /home/root123/sources/gcc3.4.3-be/bin/mips-linux-ld: failed to merge
> target specific data of file
> /home/root123/sources/sdk/platform/src/linux/mxp/src/mmxpcore.o
> make[13]: ***
> [/home/root123/sources/sdk/platform/src/linux/mxp/src/mxpmod.o] Error 1
> 

Looks like a toolchain bug/configuration-problem.  Hard to tell though 
as you didn't pass 'V=1' on the make invocation line.

David Daney
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