On Wed, Feb 01, 2023 at 12:29:02PM +0100, Florian Weimer via Gcc wrote:
> >> This impacts most (all?) Fortran code on GNU/Linux because libgfortran
> >> depends on libquadmath.
> >
> > Not anymore.
> > If GCC is configured against new enough glibc (with _Float128 support)
> > libgfortran.so.5 is no longer linked against -lquadmath, and -lquadmath
> > is added only --as-needed to ld command line, so if all the Fortran object
> > files that need real(kind=16) (or quad complex) are built by such configured
> > GCC, -lquadmath is not linked in (just needs to be present).
>
> Hmm, I missed that recent change.
>
> Would it make sense to drop the libgfortran RPM dependency on
> libquadmath in Fedora rawhide?
This is a downstream question.
We could drop it from libgfortran (package that contains just the shared
library), but we still need it on gcc-gfortran (as the library is used
during linking for backwards compatibility reasons).
Jakub
