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-rw-r--r--ext/readline/readline.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 4a28b6e11c..626c0e0dc7 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -1,6 +1,10 @@
/* readline.c -- GNU Readline module
Copyright (C) 1997-2001 Shugo Maeda */
+#ifdef RUBY_EXTCONF_H
+#include RUBY_EXTCONF_H
+#endif
+
#include <errno.h>
#include <stdio.h>
#include <ctype.h>