diff -Naur DRAWxtl-o/source/DRAWxtl53/Makefile DRAWxtl/source/DRAWxtl53/Makefile
--- DRAWxtl-o/source/DRAWxtl53/Makefile	2006-12-18 04:10:08.000000000 +0100
+++ DRAWxtl/source/DRAWxtl53/Makefile	2007-10-30 15:41:22.000000000 +0100
@@ -35,16 +35,16 @@
   CXX             = g++
 
 # flags for C++ compiler:
-  OPTIM           = -g -Wall -Wunused  -fno-exceptions
+  OPTIM           = $(CFLAGS) -Wall -Wunused  -fno-exceptions
 # work around a bug in freeglut 2.4 - comment this line if using a different GLut
   GLUT		  = -DFREEGLUT24
-  CXXFLAGS        = $(OPTIM)  -I/usr/X11R6/include $(GLUT)
+  CXXFLAGS        = $(OPTIM)  -I/usr/X11R6/include $(GLUT) -I/usr/include/fltk-1.1/
 
 # libraries to link with:
   GLDLIBS  =  -L/usr/X11R6/lib  -lglut -lGLU -lGL -lXinerama -lXft -lpthread -lm  -lXext -lX11  -lXpm \
 
 #       -lXi -lgdkglext-x11-1.0a  # Fedora Core 2 needs these libraries
-  LINKFLTKGL  = -L$(libdir) -lfltk_gl -lfltk
+  LINKFLTKGL  = -L$(libdir) -lfltk_gl -lfltk -L/usr/lib/fltk-1.1/
 
 # The extension to use for executables...
   EXEEXT          =