[gdal-dev] Updating requirements to C++20 for GDAL 3.13 ?

[Chris Toney]

Howard,
>One of the questions on the 2025 GDAL User Survey https://gdal.org/survey/ specifically asks the audience to rank compatibility as a priority.

Now I'm wondering what I put for that one. I don't remember but I'm
sure I wanted that too. Can we just have it all?

More seriously, my slow brain didn't jump to C++ standard and all its
implications discussed here. Fine tuning that question(s) might be
worthwhile for future. Appreciate all the work that goes into
producing and analyzing the survey. That's a huge service to the user
community.

Chris


On Thu, Dec 18, 2025 at 11:03 AM Sebastiaan Couwenberg via gdal-dev
<gdal-dev at lists.osgeo.org> wrote:
>
> On 12/18/25 6:28 PM, Howard Butler via gdal-dev wrote:
> > IMO, guidance from packagers on this topic should be most determinant. Greg seemed apprehensive in his response. I'd like to hear from some others before making the decision.
>
> The gdal package in Debian is not backported because that requires rebuilding its reps as well, it's fine as long as the default GCC in Debian unstable is supported.
>
> That same gdal package is backported for OSGeo-Live and UbuntuGIS, so they need support for at least the latest Ubuntu LTS which OSGeo-Live is based on, and the last two Ubuntu LTS releases for which the UbuntuGIS PPA provides packages.
>
> Kind Regards,
>
> Bas
>
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