From: Bart Martens <bartm@debian.org>
Subject: Fixes FTBFS 556374

--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 
 CPPC=c++
 CC=cc
-LIBS:=`sdl-config --libs` -lSDL_net -lstdc++
+LIBS:=`sdl-config --libs` -lSDL_net -lstdc++ -lm
 CFLAGS:=`sdl-config --cflags` -Wall -ggdb3
 ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
 CFLAGS += -O0