从.c创建DLL文件

我正试图从这个.c代码（用于Labview）创建一个.dll文件。

但我无法使用VisualStudio或“mcc”编译它，因为两个编译器都返回此错误：

VChooseK.obj : error LNK2019: unresolved external symbol mexErrMsgIdAndTxt referenced in function BadInputTypeError 
VChooseK.obj : error LNK2019: unresolved external symbol mxFree referenced in function ElemK_8Byte 
VChooseK.obj : error LNK2019: unresolved external symbol mxMalloc referenced in function ElemK_8Byte 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetData referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetPr referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetElementSize referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mexWarnMsgIdAndTxt referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxCreateNumericMatrix_730 referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetClassID referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxSetN_730 referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxSetM_730 referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxDuplicateArray referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetScalar referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxGetNumberOfElements referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxIsDouble referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxIsLogical referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxIsChar referenced in function mexFunction 
VChooseK.obj : error LNK2019: unresolved external symbol mxIsNumeric referenced in function mexFunction 

有人能帮我吗？ 我已经在VisualStudio中包含了“mex.h”的路径