On Mojave, I ran into a situation while trying to install CryptX via CPAN: "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- CryptX.bs blib/arch/auto/CryptX/CryptX.bs 644 "/usr/bin/perl" "/System/Library/Perl/5.18/ExtUtils/xsubpp" -typemap '/System/Library/Perl/5.18/ExtUtils/typemap' -typemap '/Users/a.leofreddi/.cpan/build/CryptX-0.063-EfIC0d/typemap' CryptX.xs > CryptX.xsc mv CryptX.xsc...