--- airstrike-pre6a-src/src/Makefile.link	2012-12-15 14:48:20.275217127 +0000
+++ airstrike-pre6a-src/src/Makefile	2012-12-15 14:48:48.255843430 +0000
@@ -7,10 +7,10 @@
 OBJECTS:= $(CFILES:.c=.o)
 
 airstrike: $(OBJECTS)
-	$(CC) -o $@ $(CFLAGS) $(OBJECTS) `sdl-config --libs` -lSDL_image
+	$(CC) -o $@ $(CFLAGS) $(OBJECTS) `sdl-config --libs` -lSDL_image -lm
 
 airstrike-sound: $(OBJECTS)
-	$(CC) -o $@ $(CFLAGS) $(OBJECTS) `sdl-config --libs` -lSDL_image -lSDL_mixer
+	$(CC) -o $@ $(CFLAGS) $(OBJECTS) `sdl-config --libs` -lSDL_image -lSDL_mixer -lm
 
 # Use the rule below when coding new sprite types
 #sprites_autogen.h: sprite_types/*.c