+AC_CHECK_PROG([HAVE_RPCGEN], [rpcgen], [yes], [no])
+if test x$HAVE_RPCGEN != xyes; then
+ AC_MSG_ERROR([Can not find required program])
+fi
+
+#option: examples
+AC_ARG_ENABLE([examples],
+ [AC_HELP_STRING([--enable-examples],
+ [Build example programs])],
+ [ENABLE_EXAMPLES=$enableval],
+ [ENABLE_EXAMPLES="no"])
+
+if test x$ENABLE_EXAMPLES = xyes; then
+ MAYBE_EXAMPLES="examples"
+fi
+AC_SUBST(MAYBE_EXAMPLES)