mruby/mruby — pull request #1861 by mitchellh (2014-03-15 03:48:01+00:00)
Title: On MinGW systems, tzset is _tzset

On MinGW systems (both 32-bit and 64-bit), tzset is actually exported as _tzset. This patch conditionally defines that. This fixed linking issues I had where mruby would compile fine, but when I tried to link it to an application, it would fail with "tzset undefined"