loadlibrary error

Hi,

I have downloaded a set of functions for computing exact geodesic on a surface mesh from here : http://www.mathworks.com/matlabcentral/fileexchange/18168-exact-geodesic-for-triangular-meshes

I was trying to go through the examples provided by the author, but as one of the functions makes a call to 'loadlibrary' I get the following error:

??? Error using ==> loadlibrary at 279
Microsoft Visual C++ 2005 or 2008 is required to use this feature.

I installed Microsoft Visual C++ on my machine, but this error still persists. Any help would be greatly appreciated. Thank you.

[Kaustubha Govind]

Try running "mex -setup" on your MATLAB. Is it able to automatically locate Visual C++? If not, you may be missing x64 compilers (by default only the 32-bit compiler is installed): http://www.mathworks.com/support/solutions/en/data/1-6IJJ3L/?solution=1-6IJJ3L

[Anton Semechko]

So here is what I did:

mex -setup

Please choose your compiler for building external interface (MEX) files:

Would you like mex to locate installed compilers [y]/n? y

Select a compiler:

[1] Microsoft Visual C++ 2010 Express in c:\Program Files (x86)\Microsoft Visual Studio 10.0

[0] None

Compiler: 1

Please verify your choices:

Compiler: Microsoft Visual C++ 2010 Express

Location: c:\Program Files (x86)\Microsoft Visual Studio 10.0

Are these correct [y]/n? y

***************************************************************************

Warning: MEX-files generated using Microsoft Visual C++ 2010 require

that Microsoft Visual Studio 2010 run-time libraries be

available on the computer they are run on.

If you plan to redistribute your MEX-files to other MATLAB

users, be sure that they have the run-time libraries.

***************************************************************************

Trying to update options file: C:\Users\Anton\AppData\Roaming\MathWorks\MATLAB\R2010b\mexopts.bat

From template: C:\PROGRA~1\MATLAB\R2010b\bin\win64\mexopts\msvc100freeopts.bat

Done . . .

**************************************************************************

Warning: The MATLAB C and Fortran API has changed to support MATLAB

variables with more than 2^32-1 elements. In the near future

you will be required to update your code to utilize the new

API. You can find more information about this at:

http://www.mathworks.com/support/solutions/en/data/1-5C27B9/?solution=1-5C27B9

Building with the -largeArrayDims option enables the new API.

**************************************************************************

So I guess it was able to locate the compiler. However, I am not sure if it was the 64bit one.

I tried running the above examples again, but still get the same error ...

Any idea what else I could try?

[Walter Roberson]

Maybe the error needs to be taken literally: that for some reason it requires C++ 2005 or 2008, whereas you are using C++ 2010. For example perhaps it requires SDK 6.1 for some reason.

http://www.mathworks.com/support/compilers/R2011b/win64.html

[Anton Semechko]

Hi Walter,

well, you could really help if you tried running one the examples (from above mentioned toolbox) on your machine. Does it work for you?

[Walter Roberson]

My MATLAB machine is Linux, not MS Windows.

Answer 1

[Kaustubha Govind]

For versions older than R2011a, Visual Studio Express (free) editions were not supported with LOADLIBRARY - the support was added in R2011a. However, it looks like this user has been able to use some clever tweaks to make even older versions work with the Express versions: http://www.mathworks.com/matlabcentral/newsreader/view_thread/281365

[Anton Semechko]

Thanks for clearing that up

[Walter Roberson]

So going back to a supported C++ 2008 would have worked. Too bad no-one happened to suggest anything helpful along those lines...