[gdal-dev] Call for discussion on RFC68: C++11 compilation mode

Even Rouault even.rouault at spatialys.com
Wed Aug 16 05:36:24 PDT 2017

On lundi 14 août 2017 09:44:36 CEST Kurt Schwehr wrote:
> Hi all,
> This is a call for discussion on RFC68 to set C++11 to be the minimum C++
> language version for GDAL trunk.  I've drafted the RFC based on work by
> Mateusz.
>   https://trac.osgeo.org/gdal/wiki/rfc68_cplusplus11
> There was initial discussions back in January of this year:
>   https://lists.osgeo.org/pipermail/gdal-dev/2017-January/thread.html#45786


There's one aspect that doesn't appear clearly to me in the RFC text, which is requirements 
for user C++ code using the GDAL C++ API. I presume that external code will also have to be 
compiled in C++11 mode too (because of nullptr or override keywords appearing in headers 
like gcore/gdal_priv.h for example). Would probably be worth making that explicit (perhaps 
in "Backward compatibility" paragraph)

Editorial remarks:
* the reference to "Move OTB to C++14" is after "There are a few related past RFCs that have 
never been adopted but strongly relate to RFC 68", but OTB C++14 has been adopted as far 
as I can see
* the reference to CMake in "If accepted, currently available build configurations (Autotools, 
CMake, NMake)" doesn't apply for GDAL. Regarding nmake impacts, there won't be much, 
apart perhaps removing references to MSVC versions older than the new minimum one that 
will be supported.


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