--- configure.in.old	2011-06-18 18:23:48.633605738 +0200
+++ configure.in	2011-06-18 18:26:26.910628408 +0200
@@ -33,7 +33,7 @@
     )
     
     CFLAGS="$SDL_CFLAGS $CFLAGS"
-    LIBS="$SDL_LIBS $LIBS"
+    LIBS="$SDL_LIBS $LIBS -lm"
 
 
 dnl Checks for header files.
@@ -84,7 +84,7 @@
 	CFLAGS="$CFLAGS -Wall"
 	AC_MSG_WARN(Disable Warning as Error Treatment)
 else
-	CFLAGS="$CFLAGS -Wall -Werror"
+	CFLAGS="$CFLAGS -Wall"
 fi