Re: Cross compiling MIPS kernel under x86

[Guenter Roeck <guenter.roeck@ericsson.com>]

On Tue, May 25, 2010 at 09:13:41AM -0400, Ralf Baechle wrote:
> On Mon, May 24, 2010 at 05:33:01PM +0300, Dmitri Vorobiev wrote:
> 
> > It looks like your toolchain is quite old. I just tried building a
> > Cavium Octeon defconfig using my custom toolchain based on GCC 4.3.1
> > and binutils 2.19.51.20090304, and the build was successfull. Before
> > you ask: yes, GCC did receive `-march=octeon' :)
> 
> Tools requirements to build a kernel have become a little bit confusing.
> I'm sure there are more restrictions that I've forgot.
> 
>  * The Lemote 2F defconfig requires binutils 2.20 to build.
>  * GCC 3.2 is a lost cause for building 64-bit kernels
>  * GCC 3.3 is broken but can just about be kludged to build a 64-bit kernel.
>  * GCC 4.4 or a patched older version is required to build a kernel O2 or
>    Indigo² with R10000 processors.
>  * GCC 3.2 used to work for the rest but it's a very long time since I
>    tested this for a modern kernel.
>  * Linux 2.6.29 and older need a GCC older than 4.4.0 to compile. 
> 
The toolchain from emdebian seems to work fine for me, though it is at times
a bit difficult to set up due to bad dependencies.

Guenter