Still having the same issues under Linux/GCC 4.5 or Xcode 4, but I've been able to compile the patches using MSVC++ 2010 Express, and the results are quite amazing
Here are some screenshot from 3DMark '99, a DirectX 6 (!) benchmark.
Some minor Alpha / Z Depth error here and there, especially during fillrate tests , but all around it's working pretty well:
A gallery is here:
Screenshots have been taken with Fraps, due to the dosbox built-in screenshot function not working while voodoo emulation is running.
The fps displayed are quite imprecise, and I have not noticed big performance differences between an old 1.6Ghz Core duo laptop with a Geforce go7400 and a 3.2Ghz core i3 with a radeon 5670 (iMac late 2010). Dosbox runs at 45-60 fps, excluding some scenes (again, fillrate tests) where framerate takes a noticeable drop at 5fps.
Congratulations for the astounding work, kekko
 vanilla dosbox compiles quite fine under linux, tough.
 Dosbox runs fine while compiled with /Ox optimization, /O2 make 3D Mark '99 hangs while running the animated tori Benchmark.