Ah, yes, sorry... I forgot how little stuff cygwin installs by default.

You are right about "cmtk cmtk/core/" though; sorry for the confusion.

Now, here's a list of additional Cygwin packages that you should install (hope this will be enough):

gcc4
gcc4-c++
make

This should be enough for a plain CMTK build.

Fingers crossed.

Nothing scary in the errors by the way - just unable to find the compiler, that's all.