Comment # 23 on bug 1152720 from Martin Winter

(In reply to Martin Winter from comment #22)
> (In reply to Dr. Werner Fink from comment #16)
> > I really wonder why both qpdf and cups-filters at build time do not depend
> > on the version of libgs/ghostscript within the spec files.
> 
> qpdf is on my list for a BuildRequires of cups-filters-1.25:
> 
> BuildRequires:  qpdf-devel >= 8.3.0
> 
> So it is not a runtime requirement but a build requirement. Anyway, when I
> install cups-filters-1.25, then also libqpdf.so.26 is required at runtime.

... and if you look at build.o.o
https://build.opensuse.org/package/show/Printing/cups-filters you see that the
builds for 15.0 and 15.1 fail because of a missing build dependency to
qpdf-devel >= 8.3.0. That's why I also copied qpdf to my home project to
resolve this dependency.