to get a quick overview of (static) space consumption in RIOT, I prepared some plots:
http://ludwig.spline.inf.fu-berlin.de/default_msba2.jpg http://ludwig.spline.inf.fu-berlin.de/default_msb-430.jpg http://ludwig.spline.inf.fu-berlin.de/default_native.jpg
It's a python script that uses readelf and addr2line to get memory sizes and group them by file. I've added size and path filtering, so only objects > 100 bytes that come from RIOT have been included in the plots above.
I'll clean and share the script in the next few days if nobody (this means you, I wasn't able to find anything) knows of existing software that does this better.