Add -Mvc option.

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

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index 285e8d28f84ef2d341f2bfce993a66ca09ee243d..8d87df0b80e18528c206c6e017b2e1caacd5684c 100644 (file)
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/OS/os.h-Linux,v 1.3 2005/02/17 10:04:41 ph10 Exp $ */
+/* $Cambridge: exim/src/OS/os.h-Linux,v 1.5 2006/12/20 19:54:23 tom Exp $ */
 
 /* Exim: OS-specific C header file for Linux */
 
@@ -10,6 +10,13 @@
 #define NO_IP_VAR_H
 #define SIG_IGN_WORKS
 
+/* When using the experimental Domainkeys/DKIM extensions, setting
+HAVE_LINUX_SENDFILE can increase performance on outgoing mail a bit.
+Note: With older glibc versions this setting will conflict with the
+_FILE_OFFSET_BITS=64 setting defined as part of the Linux CFLAGS. */
+
+/* #define HAVE_LINUX_SENDFILE */
+
 #define F_FREESP     O_TRUNC
 typedef struct flock flock_t;