X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/d5b80e59458182b2d557a929a18cb8c70cd56b68..dd33c4e6ffe39f57f9f6e19fd3284823e44dfe82:/src/OS/os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index cc1f3cab2..88c4d9117 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -1,4 +1,7 @@
 /* Exim: OS-specific C header file for Linux */
+/* Copyright (c) University of Cambridge 2017 */
+/* See the file NOTICE for conditions of use and distribution. */
+
 
 /* Some old systems we've received bug-reports for have a <limits.h> which
 does not pull in <features.h>.  Best to just pull it in now and have done
@@ -79,6 +82,7 @@ then change the 0 to 1 in the next block. */
 #if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN)
 # define MSG_FASTOPEN 0x20000000
 #endif
+#define EXIM_HAVE_TCPI_UNACKED
 
 
 /* End */