The error you're getting indicates that the wrong SWI-Prolog.h is getting found. Not sure how that would be happening ... but I can't see that there's any other explanation. If the SWI-Prolog.h that ships with 5.6.1 gets found, then you simply won't get those errors when opaque.c is compiled.

Cheers,
Rob

In reply to Re^5: Problems installing Language::Prolog::Yaswi by Madcap Laughs
in thread Problems installing Language::Prolog::Yaswi by reneeb

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