-/* $Cambridge: exim/src/OS/os.h-Linux,v 1.7 2007/10/04 13:28:06 tom Exp $ */
-
/* Exim: OS-specific C header file for Linux */
+/* Some weird variants may require invocation with C99 and features.h
+inclusion to build, with the 64-bit arithmetic. Make compiler selection
+their problem, but build anyway. */
+
+#include <features.h>
+
+
#define CRYPT_H
#define GLIBC_IP_OPTIONS
#define HAVE_MMAP
#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. */
+/* When using the DKIM, 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 */