gd: Freetype linkage with TTF Library vs with Freetype

Hello, I'm trying to setup up php 4.1 on a system which should replace our current 4.0.5 installation. Now I have a problem. Some old projects which use ttf-features aren't working properly. The difference between the two systems is the Freetype linkage (on the old one ist was "with TTF library") - I've tried already everything I could image to get again the Linkage with TTF library. I couldn't also find anything elsewhere on the net (nothing on the freetye maillist, google fount neither) What does the difference in the linkage mean? Is this only freetype-related and has nothing to do with GD or PHP? Any hints? Thanx a lot! Greetz Nik