error 017: undefined symbol "mysql_ping"

stock g_mysql_Init()
{
	new SQL_HOST[64], SQL_DB[64], SQL_USER[32], SQL_PASS[128], iValue;
	new SQL_SHOST[64], SQL_SDB[64], SQL_SUSER[32], SQL_SPASS[128];
	new fileString[128], File: fileHandle = fopen("mysql.cfg", io_read);

	while(fread(fileHandle, fileString, sizeof(fileString))) {
		if(ini_GetValue(fileString, "HOST", SQL_HOST, sizeof(SQL_HOST))) continue;
		if(ini_GetValue(fileString, "DB", SQL_DB, sizeof(SQL_DB))) continue;
		if(ini_GetValue(fileString, "USER", SQL_USER, sizeof(SQL_USER))) continue;
		if(ini_GetValue(fileString, "PASS", SQL_PASS, sizeof(SQL_PASS))) continue;
		if(ini_GetValue(fileString, "SHOST", SQL_SHOST, sizeof(SQL_SHOST))) continue;
		if(ini_GetValue(fileString, "SDB", SQL_SDB, sizeof(SQL_SDB))) continue;
		if(ini_GetValue(fileString, "SUSER", SQL_SUSER, sizeof(SQL_SUSER))) continue;
		if(ini_GetValue(fileString, "SPASS", SQL_SPASS, sizeof(SQL_SPASS))) continue;
		if(ini_GetInt(fileString, "SERVER", servernumber)) continue;
		if(ini_GetInt(fileString, "DEBUG", iValue)) continue;
	}
	fclose(fileHandle);

	mysql_debug(iValue);
	MainPipeline = mysql_connect(SQL_HOST, SQL_USER, SQL_DB, SQL_PASS);
	setproperty(.name = "pipeline", .value = MainPipeline);

	printf("[MySQL] (Main Pipelines) Connecting to %s...", SQL_HOST);

	if(mysql_ping(MainPipeline) == -1)
	{
		printf("[MySQL] (MainPipeline) Fatal Error! Could not connect to MySQL: Host %s - DB: %s - User: %s", SQL_HOST, SQL_DB, SQL_USER);
		print("[MySQL] Note: Make sure that you have provided the correct connection credentials.");
		SendRconCommand("exit");
	}
	else
	{
		print("[MySQL] (MainPipeline) Connection successful toward MySQL Database Server!");
	}


	ShopPipeline = mysql_connect(SQL_SHOST, SQL_SUSER, SQL_SDB, SQL_SPASS);

	printf("[MySQL] (Shop Pipelines) Connecting to %s...", SQL_SHOST);

	if(mysql_ping(ShopPipeline) == -1)
	{
		printf("[MySQL] (ShopPipeline) Fatal Error! Could not connect to MySQL: Host %s - DB: %s - User: %s", SQL_SHOST, SQL_SDB, SQL_SUSER);
		print("[MySQL] Note: Make sure that you have provided the correct connection credentials.");
		//SendRconCommand("exit");
	}
	else
	{
		print("[MySQL] (ShopPipeline) Connection successful toward MySQL Database Server!");
	}
	#endif

	return 1;
}