X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/bfe645c1570343d3adca657ab67998e122ca8792..b9c4d138d95f568884a4919314cd312dd29e120c:/src/OS/os.h-Linux?ds=sidebyside

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 05c153e2c..510865c66 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -65,5 +65,13 @@ then change the 0 to 1 in the next block. */
 # define LLONG_MAX LONG_LONG_MAX
 #endif
 
+#if _POSIX_C_SOURCE >= 200809L || _ATFILE_SOUCE
+# define EXIM_HAVE_OPENAT
+#endif
+
+#if defined(TCP_FASTOPEN) && !defined(MSG_FASTOPEN)
+# define MSG_FASTOPEN 0x20000000
+#endif
+
 
 /* End */