Running into a compile error on example C++ code

[Tryer]

Sure, I would be happy to help via some tests if needed. I have access to a WSL and a pure ubuntu machine. I will pm my email detail.

On a WSL machine, with no previous polymake installation, building from source gave rise to the following: the /usr/lib/polymake folder does not have perlx or config.ninja file. It currently does not have any symlink and yet the c++ code compiles and runs fine.

[gawrilow]

When you build polymake from sources, the default installation location is /usr/local/{lib,include,bin,share}, not just /usr, unless you have explicitly configured an alternative prefix. What you observe under /usr now are probably some ruins from your previous attempts.