应用程序调用windriver生成的函数的问题

我用windriver生成了机子上显卡的驱动，包括以下文件：
C:/WinDriver/wizard/my_projects/vvv_lib.h
A library for controlling your hardware through WinDriver.
C:/WinDriver/wizard/my_projects/vvv_lib.c
Contains the implementation of the functions used for
accessing each of the resources defined in the Wizard.
C:/WinDriver/wizard/my_projects/vvv_diag.c
The sample application which diagnoses your hardware using
the usbboard_lib.h library.
现在我想在我的c＋＋builder的应用程序中调用vvv_lib.c中的函数vvv_open().出现如下错误
【linker error】unresolved external '_vvv_open' referenced from ........\unit1.obj.
应用程序中已经包含了vvv_lib.h这个头文件。请问是不是linker的设置有问题？怎么改？万分的感谢