From dfd8fabdd7c20422a7f8abf30226aa3e9e242f55 Mon Sep 17 00:00:00 2001
From: Henner Zeller <hzeller@google.com>
Date: Thu, 27 Apr 2023 13:44:13 -0700
Subject: [PATCH] Don't #define _DEFAULT_SOURCE if already defined.

---
 src/map/mapper/mapperLib.c | 2 ++
 src/map/mio/mio.c          | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/map/mapper/mapperLib.c b/src/map/mapper/mapperLib.c
index 662d1b386..333844355 100644
--- a/src/map/mapper/mapperLib.c
+++ b/src/map/mapper/mapperLib.c
@@ -18,7 +18,9 @@
 //#define _BSD_SOURCE
 
 #ifndef WIN32
+#ifndef _DEFAULT_SOURCE
 #define _DEFAULT_SOURCE
+#endif
 #include <unistd.h>
 #endif
 
diff --git a/src/map/mio/mio.c b/src/map/mio/mio.c
index d487e8677..9ca6767db 100644
--- a/src/map/mio/mio.c
+++ b/src/map/mio/mio.c
@@ -19,7 +19,9 @@
 //#define _BSD_SOURCE
 
 #ifndef WIN32
+#ifndef _DEFAULT_SOURCE
 #define _DEFAULT_SOURCE
+#endif
 #include <unistd.h>
 #endif