http://www.perlmonks.org?node_id=1014382


in reply to Re^2: MakeMaker and Library filename extensions
in thread MakeMaker and Library filename extensions

it was just a local copy of the readonly Config::Config{}

Yes, you can overwrite its values.
That won't alter %Config::Config at all, but as long as the values are taken from this local %Config then you can perhaps make use of it.

However, my preference would still be to overwrite %Config::Config itself as that is cleaner and simpler (IMO).
Also, there might be something in the .pm file or the test suite that looks specifically at %Config::Config rather than this local copy that EU::MM uses.

Cheers,
Rob