How to build levmar using MATLAB?

Question

I am using Windows XP and matlab version is 7.10.0. I have the levmar(Levenberg Marquardt) package from http://www.ics.forth.gr/~lourakis/levmar/levmar-2.5.tgz

In the README file, we are told to compile in matlab using mex using the following command: mex -DHAVE_LAPACK -I.. -O -L -L levmar.c -llevmar -lclapack -lblas -lf2c.

I downloaded lapack.lib , blas.lib and f2c.lib for windows

UPDATE: The original error got resolved after I built a vc project file given in the package. But now there are some error messages like :

levmar.lib(misc.obj) : error LNK2019: unresolved external symbol _dgemm_ referenced in function _dlevmar_trans_mat_mat_mult 

Answer 1

You may have a look at immoptibox, which comprises Levenberg-Marquardt algorithm as well.

Answer 2

I just figured it out after searching a while and noticed that the levmar package included a vc project file which i needed to build and it created a file called levmar.lib . But now I am getting some errors which involves messages like 'unable to resolve external symbols'

Answer 3

Did you create a file with a mex-function gateway? You can't just compile a c-function for Matlab; you need to do a little bit of work to take care of the I/O between Matlab and the c-code.

If you follow the steps outlined in this document, you should do fine.