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-rw-r--r--ext/readline/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/readline/extconf.rb b/ext/readline/extconf.rb
index cd500ceec8..84fb9b14a6 100644
--- a/ext/readline/extconf.rb
+++ b/ext/readline/extconf.rb
@@ -66,4 +66,5 @@ have_readline_func("rl_vi_editing_mode")
have_readline_func("rl_emacs_editing_mode")
have_readline_func("replace_history_entry")
have_readline_func("remove_history")
+have_readline_func("clear_history")
create_makefile("readline")