$OpenBSD: patch-acinclude_m4,v 1.2 2009/03/12 18:09:13 landry Exp $
--- acinclude.m4.orig	Tue Nov 11 14:44:54 2008
+++ acinclude.m4	Thu Mar 12 18:45:00 2009
@@ -143,9 +143,9 @@ XDT_CHECK_PACKAGE([LIBFAM], [gamin], [0.1.0],
   [
     AC_CHECK_LIB([fam], [FAMOpen],
     [
-      have_libfam="yes" LIBFAM_LIBS="-lfam"
+      have_libfam="yes" LIBFAM_LIBS="-lfam -lm"
       ac_bm_thunar_vfs_monitor_impl="FAM"
-    ])
+    ], [], [-lm])
   ])
 ])
 if test x"$have_libfam" = x"yes"; then