[geos-devel] Switching to C++14

[Kurt Schwehr]

All,

Related... especially since the GDAL RFC is based on GEOS RFC 5

https://trac.osgeo.org/geos/wiki/RFC5
https://gdal.org/development/rfc/rfc68_cplusplus11.html
And where does PROJ say the C/C++ requirements?

Even,

What is the current version of C++ required for PROJ and GDAL?  If it's
newer, should we add an update to GDAL RFC 68?

And C version?  Is it C99?

-kurt

On Wed, Jan 18, 2023 at 5:38 AM Daniel Baston <dbaston at gmail.com> wrote:

> What is the current lowest version?  C++11 requires gcc 4.9, strictly,
>> but 4.8 is often enough.   Is this "4.9 worked before and will still
>> work", or something else.
>>
>
> The lowest gcc version we test is 5. We know that GEOS does not build with
> gcc 4.8
> because we sometimes return std::unique_ptr<Derived> from functions with
> return
> type std::unique_ptr<Base>. I have not tried building this pull request
> with gcc 4.9
> (it does not appear to be available on the GitHub runner), but C++14 auto
> lambdas
> are claimed to be supported beginning in 4.9.
>
>  Dan
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