3 files changed, 0 insertions, 13 deletions
diff --git a/src/event/ServerSocket.cxx b/src/event/ServerSocket.cxx
index c465c15c8..ce70a969b 100644
--- a/src/event/ServerSocket.cxx
+++ b/src/event/ServerSocket.cxx
@@ -18,11 +18,6 @@
  */
 
 #include "config.h"
-
-#ifdef HAVE_STRUCT_UCRED
-#define _GNU_SOURCE 1
-#endif
-
 #include "ServerSocket.hxx"
 #include "system/SocketUtil.hxx"
 #include "system/SocketError.hxx"
diff --git a/src/system/fd_util.c b/src/system/fd_util.c
index 0e4b5663d..97ec5ba5e 100644
--- a/src/system/fd_util.c
+++ b/src/system/fd_util.c
@@ -29,10 +29,6 @@
 #include "config.h" /* must be first for large file support */
 #include "fd_util.h"
 
-#if !defined(_GNU_SOURCE) && (defined(HAVE_PIPE2) || defined(HAVE_ACCEPT4))
-#define _GNU_SOURCE
-#endif
-
 #include <assert.h>
 #include <unistd.h>
 #include <fcntl.h>
diff --git a/src/system/fd_util.h b/src/system/fd_util.h
index b73a2012f..3c72890e1 100644
--- a/src/system/fd_util.h
+++ b/src/system/fd_util.h
@@ -42,10 +42,6 @@
 #include <stddef.h>
 
 #ifndef WIN32
-#if !defined(_GNU_SOURCE) && (defined(HAVE_PIPE2) || defined(HAVE_ACCEPT4))
-#define _GNU_SOURCE
-#endif
-
 #include <sys/types.h>
 #endif