diff -up tunneler-1.1.1/src/Makefile.am.linker tunneler-1.1.1/src/Makefile.am

--- tunneler-1.1.1/src/Makefile.am.linker	2010-02-17 21:21:46.618496390 +0100

+++ tunneler-1.1.1/src/Makefile.am	2010-02-17 21:21:50.959492523 +0100

@@ -1,5 +1,5 @@

 bin_PROGRAMS = tunneler

 tunneler_SOURCES = main.c tunneler.c tunneler.h timer.c timer.h ai.c ai.h \

   font8x8.h game.h graphics.c graphics.h keys.c keys.h terrain.c terrain.h types.h

-tunneler_LDADD = -lSDL -lpthread

+tunneler_LDADD = -lSDL -lpthread -lm

 tunneler_LDFLAGS = -D_REENTRANT