From 0ea3ac9926574d4082c820e468bc9666703f2a26 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 19 Nov 2024 12:42:02 +0900
Subject: [PATCH] Fix `-Wundef` warnings

---
 ext/digest/digest.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/digest/digest.h b/ext/digest/digest.h
index 32b1d3d..c5c3758 100644
--- a/ext/digest/digest.h
+++ b/ext/digest/digest.h
@@ -76,7 +76,7 @@ rb_id_metadata(void)
 static inline VALUE
 rb_digest_make_metadata(const rb_digest_metadata_t *meta)
 {
-#if EXTSTATIC
+#if defined(EXTSTATIC) && EXTSTATIC
     /* The extension is built as a static library, so safe to refer to
      * rb_digest_wrap_metadata directly. */
     extern VALUE rb_digest_wrap_metadata(const rb_digest_metadata_t *meta);