--- /dev/null
+/* Exim: OS-specific C header file for SCO */
+
+#define DN_EXPAND_ARG4_TYPE u_char *
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH "/unix"
+#define FSCALE 256
+#define EXIM_SOCKLEN_T int
+
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL f_favail
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* default is non-const */
+#define ICONV_ARG2_TYPE const char **
+
+/* End */