Building on OSX without warnings.

[abs1nth]

Move the -Wno-non-virtual-dtor option from "Other Warning Flags" to "Other C++ flags" so that it doesn't get applied to C files (Double click on the vdrift target, select "GNU C/C++ Compiler 4.0" from "Collection" option, cut and paste as appropriate).

i will do that.
i'd really like to see these warnings fixed instead of telling the compiler to shut up about them ;-)

The function texturedPolygon() in SDL_gfxPrimitives.c has two returns without a value (around line 3586). I assume it should return -1 there.

i don't think we should touch SDL_gfxPrimitives since it isn't our code.
(although the auther is receptive to patches, you can send this fix directly to him if you want)
actually adding these files to the project was stop-gap hack....i will include a proper framework for SDL_gfx in the future.