Re: USE_LANGUAGES and wrappers

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

On Wed, Jul 19, 2023 at 10:50:14AM -0400, Greg Troxel wrote:
> Joerg Sonnenberger <joerg%bec.de@localhost> writes:
> 
> > On Wed, Jul 19, 2023 at 02:13:53PM +0000, nia wrote:
> >> "cwrappers should always default to oldest version of the C/C++ standard
> >> unless -std=XX is given" is not quite as trivial but should also be doable.
> >
> > This is going to seriously annoy any one using a compiler defaulting to
> > a newer language mode when it also introduces any ABI differences. So
> > when given a choice between pissing off users on modern system and some
> > fallout on outdated systems, I'm strongly inclined to go with the
> > former.
> 
> Do people really think it's ok for a compiler to change ABI for varying
> --std arguments?

It's OK for a *library* to change the ABI based on the standard flags.
After all, how else are they supposed to be able to use and/or expose
them.

Joerg