io/console: drop 2.1.0 support [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62633 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/io/console/console.c

@@ -14,9 +14,6 @@
 #ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
-#ifndef RARRAY_CONST_PTR
-# define RARRAY_CONST_PTR(ary) RARRAY_PTR(ary)
-#endif
 
 #if defined HAVE_TERMIOS_H
 # include <termios.h>
@@ -100,10 +97,6 @@ rb_f_send(int argc, VALUE *argv, VALUE recv)
 }
 #endif
 
-#ifndef HAVE_RB_SYM2STR
-# define rb_sym2str(sym) rb_id2str(SYM2ID(sym))
-#endif
-
 typedef struct {
     int vmin;
     int vtime;

ext/io/console/extconf.rb

@@ -17,11 +17,12 @@ else
 end
 if ok
   have_header("sys/ioctl.h") if hdr
-  have_func("rb_sym2str")
   # rb_check_hash_type: 1.9.3
   # rb_io_get_write_io: 1.9.1
   # rb_cloexec_open: 2.0.0
   # rb_funcallv: 2.1.0
+  # RARRAY_CONST_PTR: 2.1.0
+  # rb_sym2str: 2.2.0
   $defs << "-D""ENABLE_IO_GETPASS=1"
   create_makefile("io/console") {|conf|
     conf << "\n""VK_HEADER = #{vk_header}\n"

ext/io/console/io-console.gemspec

@@ -9,7 +9,7 @@ Gem::Specification.new do |s|
   s.summary = "Console interface"
   s.email = "nobu@ruby-lang.org"
   s.description = "add console capabilities to IO instances."
-  s.required_ruby_version = ">= 2.1.0"
+  s.required_ruby_version = ">= 2.2.0"
   s.homepage = "https://github.com/ruby/io-console"
   s.authors = ["Nobu Nakada"]
   s.require_path = %[lib]