From 7947121bff38c49956b9b53c785c25f4d109bd26 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Tue, 5 Aug 2014 16:03:03 +0000
Subject: strcasestr() wants _GNU_SOURCE on Linux

---
 config.h.pre      | 2 +-
 test-strcasestr.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/config.h.pre b/config.h.pre
index 52a8159a..1c3940de 100644
--- a/config.h.pre
+++ b/config.h.pre
@@ -2,7 +2,7 @@
 #define	MANDOC_CONFIG_H
 
 #if defined(__linux__) || defined(__MINT__)
-# define _GNU_SOURCE /* strptime(), getsubopt() */
+# define _GNU_SOURCE /* getsubopt(), strcasestr(), strptime() */
 #endif
 
 #include <sys/types.h>
diff --git a/test-strcasestr.c b/test-strcasestr.c
index 2ffb420b..479ba913 100644
--- a/test-strcasestr.c
+++ b/test-strcasestr.c
@@ -1,3 +1,7 @@
+#if defined(__linux__) || defined(__MINT__)
+# define _GNU_SOURCE /* strcasestr() */
+#endif
+
 #include <string.h>
 
 int
-- 
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