Fix build with older GnuTLS

[exim.git] / src / OS / os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 88c4d9117482064135ac9fada12dec3bdc8232aa..c705e5cd29eaa1f8b1fa1c2f3f56781e4658b9e4 100644 (file)
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -1,5 +1,5 @@
 /* Exim: OS-specific C header file for Linux */
-/* Copyright (c) University of Cambridge 2017 */
+/* Copyright (c) University of Cambridge 1995 - 2020 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -83,6 +83,12 @@ then change the 0 to 1 in the next block. */
 # define MSG_FASTOPEN 0x20000000
 #endif
 #define EXIM_HAVE_TCPI_UNACKED
+#ifndef TCPI_OPT_SYN_DATA
+# define TCPI_OPT_SYN_DATA 32
+#endif
+
+/* "Abstract" Unix-socket names */
+#define EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
 
 
 /* End */