[uClinux-dev] Building 2.4 and 2.6 based distro with glibc from the same Snapgear package

[Greg Ungerer]

Hi Dave,

Dave Rensberger wrote:
> My company has a product that's based on Snapgear 3.2 with a 2.4 
> kernel.   I know that 3.2 is old, but our product requirements mandate a 
> glibc based distribution, and 3.2 seems to be the last snapgear where 
> glibc is supported and works (3.3 still has glibc as an option, but it 
> doesn't appear to build).  I'm still building this with the "20030927" 
> toolchain, because I've found that the newer toolchains that snapgear 
> provides won't actually build SG 3.2's 2.4 kernel.
> 
> I'm working on a new product where I'd really like to use a 2.6 kernel 
> for increased driver compatibility.  Since you can't really install 
> multiple snapgear toolchains on the same build machine, I'd like to use 
> the same toolchain to build both the 2.4 based distro for the old 
> product and the 2.6 based one for the new product.  
> 
> Does anyone know if such a toolchain exists that can build both a 2.4 
> based and 2.6 based SG3.2 distibution?   The "20030927" toolchain won't 
> build the 2.6 kernel, and the "20051123" toolchain is too new to build 
> 3.2's 2.4 kernel. 

On this point, you mean that the older 2.4 source you have won't
cleanly compile with a more modern compiler.

If you get more recent snapgear source packages they contain
updated 2.4 kernel sources that be built with more modern tool chains.


>  I think Snapgear released some toolchains between 
> these two that might work, but they're no longer available on the 
> snapgear ftp server.  
> 
> Does anyone know where I might find archived versions of the older 
> snapgear toolchains?  Does anyone know of another solution to my 
> problem?  The thing I really want to avoid is having to use 2 different 
> build machines, which I think I'd have to do if I can't find a single 
> toolchain that can build both.  Is there any easy way to install and use 
> 2 different snapgear toolchains on the same build machine?   I'm pretty 
> sure that I once tried to install the toolchain in a location other than 
> "/", and it didn't work because the binaries were hard coded to look for 
> header files in the absolute directory /usr/local/arm-linux/include.

Ideally you want to use the 3.4.4 toolchain for all. The older 3.3.2 is
known to be buggy on some code. Update your 2.4 source if you can.

Regards
Greg


------------------------------------------------------------------------
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
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