Here's my new README for setting up your dev environment if you want to help out with the Mac OS X port. I've gotten all the dependencies to build and have modified build machinery in place in my fork (and a fork of libsnark that builds on mac with gcc!!), but have hit the wall with C++ issues that are beyond my ken that the Zcash core team at ZcashCo don't have time to address right now as they are hip deep in launch issues with Sprout for the original linux release.
If you follow the steps at:
to the letter and still have issues, please post here or email me at email@example.com
I've got some paid custom zcash integration work to do, and don't want the weeks of work on this by myself and @Mugatu to go to waste!!!!