Index: configure
--- configure.orig	2012-04-10 10:20:47.000000000 +0200
+++ configure	2012-04-11 18:18:51.000000000 +0200
@@ -14199,7 +14199,7 @@
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-ltokyocabinet  $LIBS"
+LIBS="-ltokyocabinet -lm $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
