mxcl/homebrew — pull request #13612 by simonair (2012-07-26 09:51:02+00:00)
Title: Added formula for md (1), which is missing from OS X Mountain Lion

Up to and including 10.7.4, OS X shipped with 'md' at '/usr/bin/md',
a utility to manage dependencies. Since OS X 10.8, 'md is missing,
which causes some builds of older software to fail with an error
message along the lines of 'make: md: No such file or directory'.
This formula uses the source for 'md' from OS X 10.7.4.