Martin Spott:

On most Unix platforms like FreeBSD, Solaris, IRIX (AIX is even worse)
- just not on Linux - the linker wants to know about _all_ required
libraries. So even if a shared library "libosgViewer" itself is linked
against "libosgGA" and "libosgText", you still have to name these in
order to build an "fgfs" binary.

Currently, other libraries like "-losgDB" and "-losgUtil" are
explicitly mentioned on the "fgfs" linker command, but "-losgGA" and
"-losgText" are not. This simple patch lets the linker honour
everything that's required

src/Main/Makefile.am

@@ -104,7 +104,7 @@ fgfs_LDADD = \
 	-lsgstructure -lsgenvironment \
 	-lplibpuaux -lplibpu -lplibfnt -lplibjs -lplibnet \
 	-lplibsg -lplibul \
-	-losgViewer -losgFX -losgUtil -losgDB -losgSim -losg -lOpenThreads \
+	-losgViewer -losgGA -losgText -losgFX -losgUtil -losgDB -losgSim -losg -lOpenThreads \
 	$(THREAD_LIBS) \
 	$(network_LIBS) \
 	-lz \