Re: pkgsrc GCC and libgcc_s

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Sat, Oct 19, 2019 at 05:00:02PM +0200, Rhialto wrote:
> On Sat 19 Oct 2019 at 09:17:21 -0500, Jason Bacon wrote:
> > The pkgsrc GCC packages were recently modified to remove libgcc_s.* by
> > default, to avoid confusion in cases where multiple GCC versions are in play
> > (a situation that should be avoided, but nevertheless occurs).
> > 
> > On EL systems, this results in "cannot find -lgcc_s" link errors for
> > packages using pkgsrc GCC.
> 
> This sounds like it makes it related to my earlier mails on this list
> with the subject "Building www/webkit-gtk: undefined reference to
> `__divmodti4'".  In my case, libgcc_s was apparently needed for a
> compiler-called __divmodti4 funtion. It's also present in the static
> version, libgcc.a (for gcc 7, but not for gcc 5).
> 
> Possibly a solution would be to modify gcc such that it never tries to
> use libgcc_s.so (and all problems it can cause), but always the static
> version libgcc.a.

That doesn't work for C++ because the unwind implementation can't be
duplicated.

Joerg