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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 512e28f627..bab6e3e726 100644
--- a/ext/readline/extconf.rb
+++ b/ext/readline/extconf.rb
@@ -65,6 +65,7 @@ have_readline_var("rl_line_buffer")
have_readline_var("rl_point")
# workaround for native windows.
/mswin|bccwin|mingw/ !~ RUBY_PLATFORM && have_readline_var("rl_event_hook")
+/mswin|bccwin|mingw/ !~ RUBY_PLATFORM && have_readline_var("rl_catch_sigwinch")
have_readline_func("rl_cleanup_after_signal")
have_readline_func("rl_clear_signals")
have_readline_func("rl_set_screen_size")