Error using loadlibrary - error C2059

Question

Roimeh 2013-4-9

1
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https://ww2.mathworks.cn/matlabcentral/answers/71224-error-using-loadlibrary-error-c2059

回答： Divyanshu 2025-1-15

Hi,

I'm trying to run a dll file from a matlab script. When using loadlibrary, I get the following error:

Building CC3_thunk_pcwin64 failed. Compiler output is: cl -I"C:\Program Files\MATLAB\R2012a\extern\include" /W3 /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /nologo -I"D:\CCSW PACK\MATLAB\20130408" -I"D:\CCSW PACK\CC3\CC3" "CC3_thunk_pcwin64.c" -LD -Fe"CC3_thunk_pcwin64.dll" CC3_thunk_pcwin64.c D:\CCSW PACK\CC3\CC3\CC3.h(146) : error C2059: syntax error : 'string' D:\CCSW PACK\CC3\CC3\CC3.h(154) : error C2059: syntax error : 'string'

Last two lines continue in the same pattern (not shown) - each corresponds to the line that holds a function definition in 'CC3.h'. All of them look more or less like: extern "C" __declspec(dllexport) int FuncName

I'm using a 64 bit environment, matlab version R2012a, VS 2010 express, latest SDK and its patch.

In VS it builds successfully. I've used the 'mex -setup' prior to running the matlab script.

In matlab I call the function as so: loadlibrary([dllPath,'\x64\Debug\CC3.dll'],[dllPath,'\Proj\CC3.h']);

It worked fine before trying to switch to the 64 bit architecture.

I'd appreciate any help, Roi