AC_CHECK_FUNCS([inotify_init1 clock_gettime])
dnl Check for required packages using pkg-config.
-PKG_CHECK_MODULES([HOSTINFOD],[apr-1 >= 1.3])
+PKG_CHECK_MODULES([HOSTINFOD],[apr-1 >= 1.3 libvirt >= 0.2.1])
dnl Check for Perl and POD.
AC_CHECK_PROG([PERL],[perl],[perl],[no])