cc='undef';

I will bet you all of the money in all of the world (except for that miniscule portion that actually belongs to me) that your "older ActivePerl version" that successfully built the module in the past did not respond to perl -V:cc with output of cc=undef;.
I would not even consider trying to build a perl extension on a perl that reported cc='undef';

The fact that it built on an older ActivePerl gives me hope that the same can be achieved with Strawberry Perl.
And that's where I would recommend starting.

Recent ActivePerl offerings (and your 5.28.1 might be one of these) provide an opportunity for you to request ActiveState to build the module for you
You could perhaps try that.
I don't know how that all works ... if it works at all ... it's just something I've read about ... and I'm not at all interested in it. But it's another option for you to investigate, if you're interested.

Personally, I'd start with Strawberry Perl.

Cheers,
Rob

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