lib.c:119:4: error: use of undeclared identifier 'rl_catch_signals'
   rl_catch_signals = 0;
   ^
lib.c:121:4: error: use of undeclared identifier 'rl_input_available_hook'
   rl_input_available_hook = rlAvail;
   ^
lib.c:124:4: error: use of undeclared identifier 'rl_basic_quote_characters'
   rl_basic_quote_characters = NULL;
   ^
lib.c:136:56: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE)) {
                                                       ^
lib.c:136:76: error: use of undeclared identifier 'RL_STATE_DONE'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE)) {
                                                                           ^
lib.c:136:8: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE)) {
       ^
lib.c:136:28: error: use of undeclared identifier 'RL_STATE_INITIALIZED'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE)) {
                           ^
lib.c:143:56: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE))
                                                       ^
lib.c:143:76: error: use of undeclared identifier 'RL_STATE_DONE'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE))
                                                                           ^
lib.c:143:8: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE))
       ^
lib.c:143:28: error: use of undeclared identifier 'RL_STATE_INITIALIZED'
   if (rl_readline_state & RL_STATE_INITIALIZED  &&  !(rl_readline_state & RL_STATE_DONE))
                           ^
lib.c:148:8: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_INITIALIZED) {
       ^
lib.c:148:28: error: use of undeclared identifier 'RL_STATE_INITIALIZED'
   if (rl_readline_state & RL_STATE_INITIALIZED) {
                           ^
lib.c:156:8: error: use of undeclared identifier 'rl_readline_state'
   if (rl_readline_state & RL_STATE_SIGHANDLER) {
       ^
lib.c:156:28: error: use of undeclared identifier 'RL_STATE_SIGHANDLER'
   if (rl_readline_state & RL_STATE_SIGHANDLER) {
                           ^
15 errors generated.
make: *** [Makefile:47: lib.bc] Error 1