AC_SUBST(RT_DEVEL_MODE)
dnl RT's GraphViz dependency charts
-AC_CHECK_LIB([graph],[aginitlib],RT_GRAPHVIZ="1")
+AC_CHECK_PROG([RT_GRAPHVIZ], [dot], "yes", "no")
AC_ARG_WITH(graphviz,[],RT_GRAPHVIZ=$withval)
AC_ARG_ENABLE(graphviz,
AC_HELP_STRING([--enable-graphviz],