Hi
I had the same problem with gd-1.8.4 and freetype-2.1.1!
Solution:
If you have installed freetype, you should find the file
ftglyph.h
somewhere like
/usr/local/include/freetype2/freetype/
You have to add
-I/usr/local/include/freetype2
to the line INCLUDEDIRS=... in the Makefile of your gd!
Hope this will help
greetz dar0n
P.S. In general, if you get a "File not found"-message, try to find the file on your system.. if it is somewhere, some Directory-Options in the Makefile are wrong!