How do I persuade MEX to link to a static library?

I am trying to compile a C++ file that calls some functions in a static library (.lib). I am using:

mex cfile.cpp -llibname

I get an error "LNK2019: unresolved external symbol function_name referenced in function mexFunction" for each function I call from the library, exactly as if I'd not passed mex the library file.

The .lib file links fine outside of MATLAB, e.g. when compiling an exe using cl. How do I make mex recognise the library file?

Answer 1

[Paul Bays]

I solved it. The library was 32-bit but my compiler was 64-bit.

Answer 2

[Adam]

I use the

-Llibfolder

option too when I compile my mex file against a static library. It sounds as though it just isn't finding the static library. As far as I can remember the library must be in the folder in which you call the mex function if you do not specify a path.

I have a function that wraps up the mex compilation code for mine and the library being linked against is in a different folder to that function so the -L option locates it.

[Paul Bays]

I should have said I'm using -L. to tell it the .lib is in the same folder. If I don't it gives a "could not find the library" error. So, no that's not the solution.