mxcl/homebrew — pull request #13344 by samueljohn (2012-07-11 20:49:50+00:00)
Title: ffmpeg: Xcode-only install needs additional flags.

Two flags are necessary for Xcode-only systems:
`--host-cflags` and `--host-ldflags` are set to `ENV.cflags` and `ENV.ldflags`, respectively.