Ok, it was my mistake, sorry for false alarm.

The problem was that OSG was build without Freetype support (headers weren't installed) - this caused the message about not found font though the real problem was that freetype plugin was missing.  And default font whatever it was didn't have Unicode glyphs.

2013/9/28 Cole Johnson <coleharrisjohnson@gmail.com>
Either way, that error message is wrong.

  Tomash Brechko