Re: Linux Montavista versus crosstool

["Cliff Brake" <cliff dot brake at gmail dot com>]

On 3/28/07, Miroslaw Dach <miroslaw.dach@psi.ch> wrote:

>         I am new in the embedded systems Linux development.
> I have the Xilinx evaluation FPGA board with PPC405 processor.
> This board comes with the Montavistal linux installed in the Flash.
>
> The linux itself works very well. I just wanted to prepare the additional
> software which could run under Montavista.
>
> My general question is. Is it possible to use the GNU cross complier which
> is built with crosstools by Dan Kegel to run the executables under
> linux Montavista.

It may be possible, but it is generally not a good idea to mix
toolchains in a project as you never know what problems you will run
into.  It is best to build everything with one toolchain, so in this
case, you should probably use the Montavista toolchain.

> I have successfully built crosscompilers and linkers with crosstools. I was
> really amazed that the crosstools did it in such a straight forward way.

Building the toolchain is a good start, but it is only the first step.
The real challenge comes in building a complete distribution -- which
you should do if you plan to not use the Montavista toolchain.  There
are several ways to do this:
 - use commercial toolkits like Timesys/Montavista
 - build everything from scratch (http://www.linuxfromscratch.org/)
 - use opensource build systems (Buildroot, OpenEmbedded)


Cliff


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Cliff Brake
http://bec-systems.com

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