How to Develop Apps for DSO Quad?

I noticed this post for the dso nano: seeedstudio.com/blog/2010/11 … -dso-quad/

Seems that someone got the nano to compile using the GNU tool chain. Is the Quad code also GNU compatible? That would be really nice since one can do development on any platform with GNU tools. It is eliminates the need to contact IAR to get a compiler.