--- a/configure.ac	2011-08-17 04:09:58.000000000 +0100
+++ b/configure.ac	2013-07-24 21:54:54.876181038 +0100
@@ -60,6 +60,10 @@
 AC_LIBTOOL_WIN32_DLL
 AC_LIBTOOL_RC
 AC_PROG_LIBTOOL
+
+dnl Checks for libm
+AC_CHECK_LIB([m],[floor])
+
 # test for zlib
 zlib=0
 AC_CHECK_LIB(z, inflate,zlib=1,zlib=0)