[uClinux-dev] How to install multiple versions of Snapgear toolchain?

[Greg Ungerer]

Hi Doug, Dave,

Doug Kehn wrote:
> --- Dave Rensberger wrote:
>> I have a situation that requires that I use an old
>> (2003 era)  
>> toolchain for an old product, but also need to use
>> one of the newer  
>> toolchains for a newer Snapgear 3.5 based product.  
>> Is there any way  
>> to easily install 2 different versions of the
>> Snapgear toolchain on a  
>> single computer?   Multiple installs will conflict
>> with each other  
>> because they always have to be installed in
>> /usr/local.  I've thought  
>> about installing the newer toolchain in an alternate
>> location and  
>> using chroot to create the illusion that it's
>> actually at /usr/local,  
>> but there would be complications with that too.  
>> Has anyone else  
>> encountered this problem and come up with a solution
>> that works (and  
>> hopefully isn't too messy)?
>>
> 
> It's not messy at all.  Below is advice from Greg for
> supporting multiple arm-linux toolchains.  I can't
> think of a reason why it wouldn't work for other
> toolchains too.

There is a one issue that I have run into with this type of
setup. It works well for the dist type arrangements - that don't
need the pre-compiled libs that are in the toolchain.
One caveat to that is if you are using c++, since that will
need some of the binary c++ libs in the toolchain.

Regards
Greg




> ---8<-----
> 
> I do this for the 20031127 and 20051123 toolchains.
> 
> Basically I install the old one first. Then in
> /usr/local/bin
> I rename each of the arm-linux- binaries and put a
> -3.3.2- extension
> in there, so:
> 
>      arm-linux-gcc -->>  arm-linux-3.3.2-gcc
> 
> Then install the newer tool chain.
> 
> The newer tool chain is the default (so if you use
> arm-linux-gcc).
> You can run the old using something like
> "arm-linux-gcc -V 3.3.2".
> But I prefer to change the config.arch files in the
> dist and
> use CC="arm-linux-3.3.2-" as the compiler binary.
> 
> Regards
> Greg
> 
> ----->8---
> 
> Hope this helps.  Regards,
> ...doug
> 
> 
> 
>        
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-- 
------------------------------------------------------------------------
Greg Ungerer  --  Chief Software Dude       EMAIL:     gerg at snapgear.com
Secure Computing Corporation                PHONE:       +61 7 3435 2888
825 Stanley St,                             FAX:         +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia         WEB: http://www.SnapGear.com