tools directory that you may
wish to compile and use but they are not a part of Plexus and are
not required for normal operation.
What you may need to do instead is configure the various paths for your
system. I assume that you have perl loaded in
/usr/bin/perl. If you do not, then you need to either
create a symbolic link (e.g., ln -s /usr/local/bin/perl /usr/bin/perl)
or change all the files in the distribution that contain the line
#!/usr/bin/perl (namely src/plexus).
The files in the src directory are the core services files.
Those are the only files you need to run a basic server, everything else
is optional.