I have made a small addition here as it seems there is some confusion about xcode/dev tools. If homebrew hasn't already warned you, brew doctor will tell you if you are missing anything on your system and give instructions for how to sort it out, but it's usually as simple as xcode-select --install to get dev tools on the newer versions of OS X. You shouldn't have to worry about downloading all of xcode just to get make.For other OS X user, it is better to point out that there is a little confusion in the operations that Roli-poli attempted. To use the homebrew formula prepared by dmnc, as far as I can understand not being a mac user, the correct sequence of operations is
step 1 - install homebrew as indicated in [url]http://brew.sh[/URL]
step 2 - run brew doctor and do everything it asks of you
step 3 - run the magic command: brew install dmnc/horology/tg --HEAD
And this is it. No other step whatsoever is required. Please correct me if I am wrong...
The homebrew formula will deal with the gtk+, ffth etc. dependencies for you so you shouldn't have to worry about any of that.