--- ext/readline/extconf.rb.orig 2014-05-01 11:59:37.000000000 +0000 +++ ext/readline/extconf.rb 2015-10-23 04:05:44.000000000 +0000 @@ -62,7 +63,7 @@ else end readline.have_func("rl_getc") -readline.have_func("rl_getc_function") +#readline.have_func("rl_getc_function") readline.have_func("rl_filename_completion_function") readline.have_func("rl_username_completion_function") readline.have_func("rl_completion_matches")