[postgis-devel] GDAL and Proj versions for PostGIS 3

[Darafei "Komяpa" Praliaskouski]

By accident took reply offlist.

Proj:

Proj6 is going to be in Feb-Mar, means it may get into Ubuntu 19.04, means
we better fix proj6/postgis2.5 compatibility. I can't get it working:
https://github.com/postgis/postgis/pull/354 - maybe there's another secret
spot to put that define to.

For using proj6 in full looks like it requires redesign in spatial_ref_sys
table, dropping it non-user part of it and relying on internal proj6
database? Looks like we have to do it since proj7 is going to drop old way.

Looks like PostGIS is going to have mandatory transitive SQLite dependency
via Proj.

GDAL:

I removed GDAL 1.11 from Travis matrix, as I can't compile it, it's end of
life and Ubuntu Xenial that has it was crossed out in raw form by requiring
GEOS 3.6. I propose we bump minimum version upon first ticket that
something does not work for GDAL 2.3 or earlier.

вс, 16 дек. 2018 г. в 18:00, Even Rouault <even.rouault at spatialys.com>:

> Darafei,
>
> > Proj Master/Trunk does not build with PostGIS.
>
> I guess you need to define the ACCEPT_USE_OF_DEPRECATED_PROJ_API_H macro
> so as
> to be able to use proj_api.h, which will still be there in PROJ 6, but
> should
> be completely removed in PROJ 7. Only proj.h (the new interface since PROJ
> 5)
> will then be available ( https://proj4.org/development/index.html )
>
> > There seems to have been a
> > major rewrite there, and I vaguely remember rumors that it will be Proj
> > 6.0. Can someone confirm?
>
> Yes, PROJ 6.0 should be released February/March 2019. Indeed major
> evolution
> of PROJ. Not a "rewrite", but significant additions. Details of the work
> in
> progress at https://erouault.blogspot.com/
> While PostGIS may be able to use the new interfaces in a almost 1-to-1
> way, to
> make use of the new late-binding capabilities (ie not relying on the pivot
> +towgs84 for datum transformations, but possibly using more direct
> transformation paths between 2 CRS when available), it will have to use
> the
> EPSG codes with the proj_create_crs_to_crs() API when possible rather than
> their expanded PROJ strings
>
> >
> > GDAL:
> >
> > I can't rebuild GDAL 1.11 on latest Debian.
> > Per Even Rouault it is end of life already:
> > https://github.com/OSGeo/gdal/issues/1153
> >
> > By commit history it looks like only GDAL 2.1+ are actively maintained.
>
> Only the last version is maintained (that is receive commits and bugfix
> releases). That is: now that GDAL 2.5dev cycle has started, there will be
> only
> 2.4.x releases.
>
> Even
>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
>
-- 
Darafei Praliaskouski
Support me: http://patreon.com/komzpa
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