bpo-30946: Remove obsolete fallback code in readline module (#2738)

* Remove obsolete fallback code in readline module

* Add NEWS

* Remove obsolete include

* Fix macro on Windows

1 files changed, 0 insertions, 44 deletions

diff --git a/configure b/configure
index 3a28cad967..a6f7d2bd7f 100755
--- a/configure
+++ b/configure
@@ -15228,50 +15228,6 @@ $as_echo "#define HAVE_LIBREADLINE 1" >>confdefs.h
 
 fi
 
-# check for readline 2.1
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_callback_handler_install in -lreadline" >&5
-$as_echo_n "checking for rl_callback_handler_install in -lreadline... " >&6; }
-if ${ac_cv_lib_readline_rl_callback_handler_install+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lreadline $READLINE_LIBS $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char rl_callback_handler_install ();
-int
-main ()
-{
-return rl_callback_handler_install ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_readline_rl_callback_handler_install=yes
-else
-  ac_cv_lib_readline_rl_callback_handler_install=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_rl_callback_handler_install" >&5
-$as_echo "$ac_cv_lib_readline_rl_callback_handler_install" >&6; }
-if test "x$ac_cv_lib_readline_rl_callback_handler_install" = xyes; then :
-
-$as_echo "#define HAVE_RL_CALLBACK 1" >>confdefs.h
-
-fi
-
-
 # check for readline 2.2
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */