ruby-gnome2/ruby-gnome2 — pull request #230 by cosmo0920 (2014-04-12 21:51:41+00:00)
Title: glib2 OSX: add try_compiler_option_strictly

In recent OSX, default compiler of Command Line Tools 4.0 or higher is clang.
So, '-Wout-of-line-declaration' causes flood of warnings as follows:

```
warning: unknown warning option '-Wunsafe-loop-optimizations'; did you
mean
'-Wout-of-line-declaration'? [-Wunknown-warning-option]
```