Update debug.h

debug.h

@@ -22,11 +22,16 @@
 /** @file debug.h
     @brief Debug output routines
     @author Copyright (C) 2004 Philippe April <papril777@yahoo.com>
+	@author Copyright (C) 2016 Dengfeng Liu <liudengfeng@kunteng.org>
 */
 
 #ifndef _WIFIDOG_DEBUG_H_
 #define _WIFIDOG_DEBUG_H_
 
+#include <string.h>
+
+#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
+
 typedef struct _debug_conf {
     int debuglevel;      /**< @brief Debug information verbosity */
     int log_stderr;      /**< @brief Output log to stdout */
@@ -41,7 +46,7 @@ extern debugconf_t debugconf;
  * @param level Debug level
  * @param format... sprintf like format string
  */
-#define debug(level, format...) _debug(__FILE__, __LINE__, level, format)
+#define debug(level, format...) _debug(__FILENAME__, __LINE__, level, format)
 
 /** @internal */
 void _debug(const char *, int, int, const char *, ...);