+dnl ------ GNU Readline
+READLINE_SHARED_LIBADD=""
+AC_CHECK_LIB(ncurses, tgetent, [READLINE_SHARED_LIBADD="-lncurses"],
+ AC_CHECK_LIB(termcap, tgetent, [READLINE_SHARED_LIBADD="-ltermcap"])
+)
+READLINE_LIBS=""
+AC_CHECK_LIB(readline, readline, [READLINE_LIBS="$READLINE_LIBS -lreadline $READLINE_SHARED_LIBADD"],,$READLINE_SHARED_LIBADD)
+AC_CHECK_LIB(history, add_history, [READLINE_LIBS="$READLINE_LIBS -lhistory"])