rams.  This subset is the same set of programs that
       'make install' puts into /usr/local/bin.  It has no dependency on
       the image files that are bundled in the prog directory for testing.

    (3) Using cmake

       The usual method is to build in a directory that is a subdirectory
       of the root.  First do this from the root directory:
            mkdir build
            cd build

       The default build (shared libraries, no debug, only the library)
       is made with
            cmake 