Add a "fork" of musl as //fusl.

fusl/include/syslog.h

+#ifndef _SYSLOG_H
+#define _SYSLOG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+
+#define LOG_EMERG   0
+#define LOG_ALERT   1
+#define LOG_CRIT    2
+#define LOG_ERR     3
+#define LOG_WARNING 4
+#define LOG_NOTICE  5
+#define LOG_INFO    6
+#define LOG_DEBUG   7
+
+#define LOG_PRIMASK 7
+#define LOG_PRI(p) ((p)&LOG_PRIMASK)
+#define LOG_MAKEPRI(f, p) (((f)<<3)|(p))
+
+#define LOG_MASK(p) (1<<(p))
+#define LOG_UPTO(p) ((1<<((p)+1))-1)
+
+#define LOG_KERN     (0<<3)
+#define LOG_USER     (1<<3)
+#define LOG_MAIL     (2<<3)
+#define LOG_DAEMON   (3<<3)
+#define LOG_AUTH     (4<<3)
+#define LOG_SYSLOG   (5<<3)
+#define LOG_LPR      (6<<3)
+#define LOG_NEWS     (7<<3)
+#define LOG_UUCP     (8<<3)
+#define LOG_CRON     (9<<3)
+#define LOG_AUTHPRIV (10<<3)
+#define LOG_FTP      (11<<3)
+
+#define LOG_LOCAL0   (16<<3)
+#define LOG_LOCAL1   (17<<3)
+#define LOG_LOCAL2   (18<<3)
+#define LOG_LOCAL3   (19<<3)
+#define LOG_LOCAL4   (20<<3)
+#define LOG_LOCAL5   (21<<3)
+#define LOG_LOCAL6   (22<<3)
+#define LOG_LOCAL7   (23<<3)
+
+#define LOG_NFACILITIES 24
+#define LOG_FACMASK 0x3f8
+#define LOG_FAC(p) (((p)&LOG_FACMASK)>>3)
+
+#define LOG_PID    0x01
+#define LOG_CONS   0x02
+#define LOG_ODELAY 0x04
+#define LOG_NDELAY 0x08
+#define LOG_NOWAIT 0x10
+#define LOG_PERROR 0x20
+
+void closelog (void);
+void openlog (const char *, int, int);
+int setlogmask (int);
+void syslog (int, const char *, ...);
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define _PATH_LOG "/dev/log"
+#define __NEED_va_list
+#include <bits/alltypes.h>
+void vsyslog (int, const char *, va_list);
+#if defined(SYSLOG_NAMES)
+#define INTERNAL_NOPRI 0x10
+#define INTERNAL_MARK (LOG_NFACILITIES<<3)
+typedef struct {
+        char *c_name;
+        int c_val;
+} CODE;
+#define prioritynames ((CODE *)(const CODE []){ \
+        { "alert", LOG_ALERT }, { "crit", LOG_CRIT }, { "debug", LOG_DEBUG }, \
+        { "emerg", LOG_EMERG }, { "err", LOG_ERR }, { "error", LOG_ERR }, \
+        { "info", LOG_INFO }, { "none", INTERNAL_NOPRI }, \
+        { "notice", LOG_NOTICE }, { "panic", LOG_EMERG }, \
+        { "warn", LOG_WARNING }, { "warning", LOG_WARNING }, { 0, -1 } })
+#define facilitynames ((CODE *)(const CODE []){ \
+        { "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 }, { "news", LOG_NEWS }, \
+        { "security", LOG_AUTH }, { "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 }, { 0, -1 } })
+#endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif