Does macport generate pkg-config .pc files?

[Roger]

Hi,
Does macport generate pkg-config .pc files?
Where does all /opt/local/lib/pkgconfig/*.pc files come from?
Is it a special statement for this in Portfile to generate the .pc file?

I'm asking because I'm trying to install Sane from CPAN, but it cannot find
the macport sane-backends because of pkg-config.

Thanks for any hints!
Roger
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