arbout arm linux Tool chains

Hi everyone,

I am new bie to linux. I just with the requirment of porting a simple
helloworld program on to my AT91RM9200EK board. But now my requirement has
changed to porting of linux kernal to the target. I stated googling only to
end up in confusion. please help me in clarifying things.

1) We can build our own cross compiler, but why is ti neccessary, why not
a prebuilt version satisfy all our requirements.

2) I found some standard prebuilt arm toolchains listed below
» arm-elf-4.1.1, newlib 
» arm-elf-3.2.1, newlib 
» arm-linux-4.1.2, uclibc 
» arm-linux-3.4.4, glibc 
The above tool chains were from taken from
ronetix(http://www.ronetix.at/software.html)

- What are the difference between the above listed. (One thing I can see
is that they use different libaries. Also that I have learnt uClibc is
meant for uCLinux kernal which does not support MMU)
- Which one to go for in the case of my target.
- Which is the most recent one.
Basically how to select the tool chain.
3) I wanted to build the linux kernal in cygwin environment. Hence which
tool chain to prefer in that case and any help/references for compiling
kernal for arm in cygwin environment

Kindly help me in understanding things, I have been spending lot of time
on this and still havent reached a conclusion
Thanks,
Hari



Target details:
AT91RM9200 EK board from ATMEL uses ARM920T core.

linuxhgs16 wrote:
> 
> I am new bie to linux. I just with the requirment of porting a
> simple helloworld program on to my AT91RM9200EK board. But now my
> requirement has changed to porting of linux kernal to the target.
> I stated googling only to end up in confusion. please help me in
> clarifying things.
> 
> 1) We can build our own cross compiler, but why is ti neccessary,
> why not a prebuilt version satisfy all our requirements.
... snip ...

Building helloworld and a kernel are wildly different things.  The
first gives you an idea of the basic steps for anything.  I suggest
you try to absorb smaller increments, and ask questions about the
various steps you take.

Of course you don't need to compile a cross-compiler, if one is
already done that meets your requirements.

-- 
 [mail]: Chuck F (cbfalconer at maineline dot net) 
 [page]: <http://cbfalconer.home.att.net>
            Try the download section.