Compilation is notoriously singlethreaded, generally speaking. make -j 2 There, now it needs multiple processes. Actually, default builds on OS X often do

Compilation is notoriously singlethreaded, generally speaking. make -j 2 There, now it needs multiple processes. Actually, default builds on OS X often do since it's building for the 2-4 architectures that OS X supports (ppc, ppc64, i386, x86_64).