Cross compiler for ARM with glibc

Hi, I apologies in advance if this the wrong mailing list. II'm porting linux to iPAQ h6300 which based on ARM925 chip, so I'm looking for cross compiler which I can use on Mac OS X. I tried to build crosstool but I had few problem with compilation, but after long search on the internet I found darwinports which seams to be the right place to do these kind of things. So is there an existing cross compiler for ARM !!! or do I need to build one !!! Thanks