Stuck installing MongoDB on Mavericks OSX 10.9 brew install hangs at scons line
I was in the same situation today where it took more than 20 minutes for homebrew to install mongoDB (2.4.8 on Mavericks). It "hung" in clang and MBA fans went berserk. Give it more time.
You can toggle verbose debug mode by running:
brew install -vd mongodbThat will give you a LOT more output, so you'll see everything that's happening and know it's not hanging.
For what it's worth, I just did an upgrade on Mac OS 10.8.5 and it took almost 45 minutes from source. Using MacPorts sudo port install mongodb (currently MongoDB 2.4.9). On a mid-2011 Macbook Air 4GB RAM it pinned the 4 CPUs with up to 8 clang processes during the build. XCode 5.0.2.