How to get SublimeClang, https://github.com/quarnster/SublimeClang, going on OS X
First step clone SublimeClang repo into your Sublime package directory.
# git clone https://github.com/quarnster/SublimeClang.git
# cd SublimeClang
# git pull && git submodule foreach --recursive git pull origin master
Next step is to compile libcache.dylib from SublimeClang/src. There is a cmake project for doing this but I never got it to work and as it seems to be only one file, it is farly easy to figure this out. And don't get fooled this is not the same as the libcache.dylib that is available in the system.