[Error] Compile With MaveN

[IMac]

Hello Gyes Anyone Can Help Me ? 

 

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

D:\workspace\trunk\GameServer>
D:\workspace\trunk\GameServer>buildall
The path of the LoginServer project is ..\LoginServer
The path of the GameServer project is ..\GameServer
The path of the Commons project is ..\Commons
The path of the ChatServer project is ..\ChatServer
The path of the DataPack project is ..\DataPack
ECHO is off.
Clean Process [DataPack\GameServer\LoginServer\ChatServer]:
ECHO is off.
Moving to folder (..\DataPack)
'mvn' is not recognized as an internal or external command,
operable program or batch file.
Moving to folder (..\GameServer)
'mvn' is not recognized as an internal or external command,
operable program or batch file.
Moving to folder (..\LoginServer)
'mvn' is not recognized as an internal or external command,
operable program or batch file.
Moving to folder (..\ChatServer)
'mvn' is not recognized as an internal or external command,
operable program or batch file.
ECHO is off.
Compile Process [Commons\GameServer\DataPack\LoginServer\ChatS
ECHO is off.
Moving to folder (..\Commons)
'mvn' is not recognized as an internal or external command,
operable program or batch file.
Moving to folder (..\GameServer)
'mvn' is not recognized as an internal or external command,
operable program or batch file.

 

Please Help Me :(