I did search before posting, but did not find anything here in the *ARM* section. Searching for "mac gcc" gives lots of AVR results, but when you limit the search to this community, nada.
I'm pretty experienced with the AVR side of the house, but I have a project where I'm likely to start using an ATSAMS70N19 (I need SDHC, AES and hi-speed USB). I've ordered a SAME70 XPLD board to begin experiments with, and I have an ATMelICE which which (I assume?) I can do JTAG programming (with avrdude?).
One of the next things on my to-do list is to get a mac toolchain. I assume there's going to be more to it than just getting an ARM GCC compiler for mac... is there a set of headers for the various devices and/or a baby C library like there is for AVR?
If I really have to, I can use an IDE in a Windows VM, but frankly I'd be holding my nose the entire time, and it's hard to get work done with only one hand free.
P.s. I do see something potentially useful here, but the registration system is completely broken. The e-mail to verify your address contains a supposed verification link that isn't even close to a proper URL.