http://bugs.winehq.org/show_bug.cgi?id=31787
--- Comment #2 from Qian Hong fracting@gmail.com --- Travis CI supports build and test C language projects as well as many other language projects on both Linux and Mac.
I've successfully(?) build Wine64 on Linux VM on Travis CI, but failed to run test. I haven't try build Wine on Mac on Travis CI yet. https://travis-ci.org/fracting/wine-fracting
Travis CI does not support 32bit Linux VMs at this time, it seems there is no easy way to build WoW on Travis CI' 64bit Ubuntu 12.04 VM. Fortunately they support install build dependencies from ppa or other sources, so it seems still possible.
Travis CI uses xvfb for GUI tests on Linux.