Here's the output from build:
CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:108 (message):
Could NOT find Opus (missing: OPUS_INCLUDE_DIR)
Call Stack (most recent call first):
Here's CMakeOutput.log: http://pastebin.com/bbcWFPtN (expires in two weeks). I'm not well versed in compiling large projects like Unvanquished, so it's a bit overwhelming for me, I'll try my best though.
I added "opusfile" as a dependency to the PKGBUILD, which should solve this specific issue. If you have another issue regarding freetype, update your cmake installation (there was a mismatch between freetype and cmake versions recently).
Grab the new PKGBUILD here: https://aur.archlinux.org/packages/unvanquished/
We just realized that even after the cmake upgrade, there are still issues with the new freetype version. We are working on this.
Updated the PKGBUILD again with a hotfix for the cmake/freetype mismatch. See if it works now.
Just got time to reply, I used cmake-git from the AUR, and I believe I got the new PKGBUILD, it compiled fine. I'll have to get home and test out how it runs though.
Everthing looks fine, I don't have much time to play a few rounds, but I started a Local game and loaded a few maps and wandered around. I'm closing this for now, thanks for all the help!