... Preferences before starting the program.
All versions are built using Xcode 2.5 with -O3 -fsched-interblock -ftree-loop-linear. The G5 version has additional flags for better performance on the 970.
All versions include SDL 1.2.15 and libpng. There is no support for this or any SVN build of DOSBox. These builds are provided strictly as a convenience and you use them at your own risk. Updates to current SVN may occur intermittently or never; you are strongly advised to roll your own.