It's quite easy to change %Config values - and the same method works on all systems.
Just create a file named (say) New_Config.pm:
You should be aware that changing paths in
Config.pm has no effect on
@INC. The point of the hack in
ExtUtils::FakeConfig is to fool
other programs about how this Perl has been built. Other programs
use Config and act accordingly. For Perl itself it is just a report written at build time, the Perl executable does not read it (unless you start with
perl -d as the debugger does use it).