Which part of which file of your module depends on USE_PERLIO ( "perlio.h" )?
Why is it important for CPAN metadata to know about C-level requirements?

It is important because there are features in the perl core that are available iff PerlIO is used. Unlike most C-level flags, USE_PERLIO has visible effects on Perl code. In particular, if PerlIO is not used, opening a scalar as a file does not work.

In reply to Re^4: How to declare a dependency on PerlIO in a CPAN module? by jcb
in thread How to declare a dependency on PerlIO in a CPAN module? by jcb

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