On Posix you will need to install the -dev package for OpenSSL.
To get the loading of sidero shared libraries you will need to set the LD path before execution.
E.g. export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/projects/ProjectSidero/eventloop/examples/networking
or you can patch the binary:
patchelf --force-rpath --set-rpath ~/projects/ProjectSidero/eventloop/examples/networking ./example_networking