Something

david@neptune:~/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a$ make
Making all in Fl_Plib
make[1]: Entering directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/Fl_Plib'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/Fl_Plib'
Making all in src
make[1]: Entering directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/src'
make  all-am
make[2]: Entering directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/src'
if g++ -DHAVE_CONFIG_H -I. -I. -I. -I..   -I/usr/X11R6/include -DDRAW_WITH_TEXTURES -g -O2 -MT objlibwin.o -MD -MP -MF ".deps/objlibwin.Tpo" -c -o objlibwin.o objlibwin.cpp; \
        then mv -f ".deps/objlibwin.Tpo" ".deps/objlibwin.Po"; else rm -f ".deps/objlibwin.Tpo"; exit 1; fi
objlibwin.cpp: In member function 'void FGSD_ObjectLibraryWindow::renFolder()':
objlibwin.cpp:383: error: no matching function for call to 'Flu_Tree_Browser::Node::label(const char*&)'
/usr/local/include/FLU/Flu_Tree_Browser.h:825: note: candidates are: const char* Flu_Tree_Browser::Node::label() const
objlibwin.cpp: In member function 'void FGSD_ObjectLibraryWindow::renModel()':
objlibwin.cpp:602: error: no matching function for call to 'Flu_Tree_Browser::Node::label(const char*&)'
/usr/local/include/FLU/Flu_Tree_Browser.h:825: note: candidates are: const char* Flu_Tree_Browser::Node::label() const
make[2]: *** [objlibwin.o] Error 1
make[2]: Leaving directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/src'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/david/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a/src'
make: *** [all-recursive] Error 1
david@neptune:~/Downloads/SIMGEAR/fgsd-0.3.1a/fgsd-0.3.1a$