--- configure.in~ 2010-03-19 10:14:15.000000000 -0500
+++ configure.in 2010-03-19 10:16:53.808478856 -0500
@@ -16,7 +16,7 @@
dnl check SDL version
AM_PATH_SDL(1.2.0,, AC_MSG_ERROR(lib SDL is needed))
CFLAGS="$CFLAGS $SDL_CFLAGS"
-LIBS="$LIBS $SDL_LIBS"
+LIBS="$LIBS $SDL_LIBS -lm"
dnl check sound
audio_flag="-DAUDIO_ENABLED"