Hi Ruben:

So the archive you downloaded appears to be some kind of default archive generated by NITRC... to be hnoest, I am not sure what's in there.

The best way to get the code in Cygwin is to install the "subversion" package, if it's not already installed (you should have a command "svn" in your path then).

Afterwards, run

svn co https://nitrc.org/svn/cmtk/trunk/core cmtk

And you should see all the necessary files appear under the newly-created cmtk/ directory. (Choose a different name if you prefer).

You should then be able to proceed as follows:

mkdir cmtk-build
cd cmtk-build
cmake ../cmtk
make

I guess you used a web browser to access the SVN repository, which indeed does not get you very far.

Hope this helps.

Torsten