I just found an open source SDK called "Embedded Linux Development Kit" for arm family. I am wondering if it works for iLiad. Actually, I don't need another sdk for iLiad, because the current one I am using is ok. Just out of curiosity.
Here is the download link:ftp://ftp.denx.de/pub/eldk/4.2/arm-linux-x86/
I will give it a try if I know how to install and use it.

In the readme doc, there is a line:
The version of 4.2 and higher of ELDK has two ARM targets in distribution - one with the soft-float math support, and another one with the Vector Floating Point math support. Both targets comply with ARM Embedded Application Binary Interface (EABI).

Interesting!

It would be nice to use a 'standard' toolchain to build Iliad things. It's quite big (the iso is 500MB) and it would take quite some effort to build (and test!) all the irex programs and libs...

We use ELDK for PPC at my work, but I have never installed it myself...
There are tutorials on internet about installing it.

I just found an open source SDK called "Embedded Linux Development Kit" for arm family. I am wondering if it works for iLiad.
[...]
Both targets comply with ARM Embedded Application Binary Interface (EABI).

The iliad doesn't support EABI, as it has a 2.4 kernel (EABI requires kernel 2.6.19 or later). That means that the binaries produced by that toolchain will not work in the iliad. Sorry.

Thanx. You saved my time and brain.