--- a/Makefile	Sun Nov 25 15:50:01 2007 +0100
+++ b/Makefile	Sun Nov 25 17:58:29 2007 +0100
@@ -1,4 +1,4 @@
-CCFLAGS=-I./src -Wall -Wno-write-strings -O3 -fno-strict-aliasing -DPTHREADS
+CCFLAGS=-I./src -Wall -Wno-write-strings -g -O3 -fno-strict-aliasing -DPTHREADS
 LDFLAGS=
 
 ifeq ($(OS), Windows_NT)
@@ -46,7 +46,7 @@
 matrix.o: src/matrix.cc src/matrix.h src/vector.h
 noise.o: src/noise.cc src/noise.h
 scene.o: src/scene.cc src/scene.h src/vector.h src/noise.h src/common.h
-kdtree.o: src/kdtree.cc src/kdtree.h
+kdtree.o: src/kdtree.cc src/kdtree.h src/scene.h
 raytracer.o: src/raytracer.cc src/raytracer.h src/scene.h src/vector.h src/noise.h
 
 # python module