mxcl/homebrew — pull request #10170 by manphiz (2012-02-14 09:29:03+00:00)
Title: Fix threading detection for GCC 4.7+.

Threading support detection in Boost 1.48.0 is broken against GCC 4.7+. Patch from trunk. See https://svn.boost.org/trac/boost/ticket/6165 for more info.

Though only GCC 4.2.1 is available from Apple, this is helpful for people with custom built GCC.