Re: configure adds -std=gnu++11 to CXX variable

On Tue, May 28, 2024 at 10:36 AM Paul Eggert <[email protected]> wrote:
>
> On 2024-05-28 01:20, Jonathan Wakely wrote:
> > I am not aware of any distro ever changing the default -std setting for g++
> > or clang++. Are you attempting to solve a non-problem, but introducing new
> > ones?
>
> If it's a non-problem for C++, why does Autoconf upgrade to C++11 when
> the default is C++98? Autoconf has done so since Autoconf 2.70 (2020),
> with nobody complaining as far as I know.
>
> Was the Autoconf 2.70 change done so late that it had no practical
> effect, because no distro was defaulting to C++98 any more?

Yes, the GCC default changed from C++98 to C++14 in GCC 6 (2016).

> If so, it sounds like Autoconf should go back to its 2.69 behavior and not mess
> with the C++ version as that's more likely to hurt than help.

Not by default, certainly.

> For background on that Autoconf 2.70 change, see this 2013 thread:
>
> https://lists.gnu.org/r/autoconf/2013-01/msg00016.html
>