NSLog without date time stamp, application name, and process id info.

customLoggerForObjC.m

 #define NSLog(args...) CustomLog(__FILE__, __LINE__, __PRETTY_FUNCTION__, args)  
 static inline void CustomLog(const char *file, int lineNumber, const char *functionName, NSString *format, ...)  
 {  
   // Type to hold information about variable arguments.  
   va_list ap;  
   // Initialize a variable argument list.  
   va_start (ap, format);  
   // NSLog only adds a newline to the end of the NSLog format if  
   // one is not already there.  
   // Here we are utilizing this feature of NSLog()  
   if (![format hasSuffix: @"\n"])  
   {  
     format = [format stringByAppendingString: @"\n"];  
   }  
   NSString *body = [[NSString alloc] initWithFormat:format arguments:ap];  
   // End using variable argument list.  
   va_end (ap);  
   NSString *fileName = [[NSString stringWithUTF8String:file] lastPathComponent];  
   fprintf(stderr, "(%s) (%s:%d) %s",  
       functionName, [fileName UTF8String],  
       lineNumber, [body UTF8String]);  
 }