diff --git a/options/posix/include/syslog.h b/options/posix/include/syslog.h
index c984be169..93412b1af 100644
--- a/options/posix/include/syslog.h
+++ b/options/posix/include/syslog.h
@@ -55,6 +55,58 @@ extern "C" {
 #define LOG_INFO 6
 #define LOG_DEBUG 7
 
+#if defined SYSLOG_NAMES && defined __USE_MISC
+typedef struct _code {
+	char *c_name;
+	int	c_val;
+} CODE;
+
+#define	INTERNAL_NOPRI 0x10
+#define	INTERNAL_MARK LOG_MAKEPRI(LOG_NFACILITIES << 3, 0)
+
+CODE prioritynames[] = {
+    { "alert", LOG_ALERT },
+    { "crit", LOG_CRIT },
+    { "debug", LOG_DEBUG },
+    { "emerg", LOG_EMERG },
+    { "err", LOG_ERR },
+    { "error", LOG_ERR },		/* DEPRECATED */
+    { "info", LOG_INFO },
+    { "none", INTERNAL_NOPRI },		/* INTERNAL */
+    { "notice", LOG_NOTICE },
+    { "panic", LOG_EMERG },		/* DEPRECATED */
+    { "warn", LOG_WARNING },		/* DEPRECATED */
+    { "warning", LOG_WARNING },
+    { NULL, -1 }
+};
+
+CODE facilitynames[] = {
+    { "auth", LOG_AUTH },
+    { "authpriv", LOG_AUTHPRIV },
+    { "cron", LOG_CRON },
+    { "daemon", LOG_DAEMON },
+    { "ftp", LOG_FTP },
+    { "kern", LOG_KERN },
+    { "lpr", LOG_LPR },
+    { "mail", LOG_MAIL },
+    { "mark", INTERNAL_MARK },		/* INTERNAL */
+    { "news", LOG_NEWS },
+    { "security", LOG_AUTH },		/* DEPRECATED */
+    { "syslog", LOG_SYSLOG },
+    { "user", LOG_USER },
+    { "uucp", LOG_UUCP },
+    { "local0", LOG_LOCAL0 },
+    { "local1", LOG_LOCAL1 },
+    { "local2", LOG_LOCAL2 },
+    { "local3", LOG_LOCAL3 },
+    { "local4", LOG_LOCAL4 },
+    { "local5", LOG_LOCAL5 },
+    { "local6", LOG_LOCAL6 },
+    { "local7", LOG_LOCAL7 },
+    { NULL, -1 }
+};
+#endif
+
 #ifndef __MLIBC_ABI_ONLY
 
 void closelog(void);