Get ready for maximum awe
./src/inkscape
Feel the awe.
I think your C++ expertise would be most useful if you further the
integration with the underlying OS. Please take a look at:
https://code.launchpad.net/~suv-lp/inkscape/osxmenu
I just copied and pasted my own instruction here. It’s already very similar to what’s on wiki and what Liam gave to you, but the configure process is a little different. I also want to clarify that this is for Inkscape 0.91, not 0.48. (The 0.91 is what you get from the trunk anyway). Let me know if it works!