将 C 源代码转换为 DLL 结果为 "unresolved externals"

Question

我正在尝试运行使用 C 编写的代码，该代码用于对话板 dmv 960A 4T1pci。我正在尝试将该代码转换为 DLL，但我遇到了 34 个几乎相同的错误，这是它们的列表:

Linking...
   Creating library Debug/drivendll.lib and object Debug/drivendll.exp
drivendll.obj : error LNK2001: unresolved external symbol _sr_waitevt
drivendll.obj : error LNK2001: unresolved external symbol _gc_CCLibStatusEx
drivendll.obj : error LNK2001: unresolved external symbol _gc_Start
drivendll.obj : error LNK2001: unresolved external symbol _sr_setparm
drivendll.obj : error LNK2001: unresolved external symbol _gc_DropCall
drivendll.obj : error LNK2001: unresolved external symbol _gc_WaitCall
drivendll.obj : error LNK2001: unresolved external symbol _gc_ResetLineDev
drivendll.obj : error LNK2001: unresolved external symbol _gc_Close
drivendll.obj : error LNK2001: unresolved external symbol _gc_ResultInfo
drivendll.obj : error LNK2001: unresolved external symbol _gc_util_delete_parm_blk
drivendll.obj : error LNK2001: unresolved external symbol _gc_SetUserInfo
drivendll.obj : error LNK2001: unresolved external symbol _gc_util_insert_parm_val
drivendll.obj : error LNK2001: unresolved external symbol _gc_GetMetaEvent
drivendll.obj : error LNK2001: unresolved external symbol _gc_AlarmSourceObjectName
drivendll.obj : error LNK2001: unresolved external symbol _gc_AlarmSourceObjectID
drivendll.obj : error LNK2001: unresolved external symbol _gc_AlarmName
drivendll.obj : error LNK2001: unresolved external symbol _gc_AlarmNumber
drivendll.obj : error LNK2001: unresolved external symbol _gc_ReleaseCallEx
drivendll.obj : error LNK2001: unresolved external symbol _gc_AnswerCall
drivendll.obj : error LNK2001: unresolved external symbol _gc_AcceptCall
drivendll.obj : error LNK2001: unresolved external symbol _gc_GetCallInfo
drivendll.obj : error LNK2001: unresolved external symbol _gc_SetAlarmNotifyAll
drivendll.obj : error LNK2001: unresolved external symbol _gc_GetResourceH
drivendll.obj : error LNK2001: unresolved external symbol _gc_MakeCall
drivendll.obj : error LNK2001: unresolved external symbol _gc_OpenEx
drivendll.obj : error LNK2001: unresolved external symbol _gc_LoadDxParm
drivendll.obj : error LNK2001: unresolved external symbol __imp__inet_ntoa@4
drivendll.obj : error LNK2001: unresolved external symbol __imp__gethostbyname@4
drivendll.obj : error LNK2001: unresolved external symbol __imp__gethostname@8
drivendll.obj : error LNK2001: unresolved external symbol _gc_util_insert_parm_ref
drivendll.obj : error LNK2001: unresolved external symbol _gc_SetCallingNum
drivendll.obj : error LNK2001: unresolved external symbol _gc_ErrorInfo
drivendll.obj : error LNK2001: unresolved external symbol _gc_Stop
Debug/drivendll.dll : fatal error LNK1120: 33 unresolved externals
Error executing link.exe.

Answer 1

更新

看来您正在使用以下库:

http://threebit.net/projects/jvr/download/

确保您链接到适合您平台的库对象，如另一个答案中所述。有一个linux版本，一个windows版本，还有一个java dev的jar。确保您在链接器设置中包含了正确的设置。例如，这是我们在 eclipse 中执行此操作的方法。

http://wiki.eclipse.org/CDT/User/FAQ#How_do_I_add_an_external_library_to_my_C.2B.2B_project.3F

原始答案*

“未解析的外部符号”表示在您的项目中您需要和/或使用链接到您未正确包含在项目中的某些库的类。无论您在 makefile 中使用或使用哪种 IDE，请确保您已正确包含项目所需的所有库文件。