I followed the guidelines and used $ ./configure $ make $ sudo make install When I try to run polymake, the following error shows up: simon@Simon-PC:~/polymake-3.0$ polymake Can't load '/usr/local/lib/polymake/perlx/5.22.1/x86_64-linux-gnu-thread-multi/auto/Polymake/Ext/Ext.so' for module Polymake::...