libgit2/libgit2 — pull request #2017 by sugarmo (2013-12-28 15:29:06+00:00)
Title: Add -DLIBICONV_PLUG for cmake when using a iconv in Mac OS X.

Or it will not able to find correct symbols (`iconv`, `iconv_open`, `iconv_close`) for `libiconv.dylib`.