[gdal-dev] On Internal PROJ When Building

[Patrick Young]

Thanks Even!

As newer versions of Ubuntu pick up fresher versions of proj (was checking
out https://packages.ubuntu.com/groovy/libproj-dev), is there a minimum
version of proj that'll be reasonable (e.g. 7 or 8) to use?

P



On Thu, Aug 26, 2021 at 9:44 AM Even Rouault <even.rouault at spatialys.com>
wrote:

> Actually looking at the wiki page, I've just updated it since it would not
> have worked if the system PROJ is >= 6.0. The update consists in adding
> -DPROJ_INTERNAL_CPP_NAMESPACE to CXXFLAGS when building PROJ so that C++
> symbols of the "internal" proj don't clash with the ones of the system PROJ
> (that was Docker build recipees already did)
> Le 26/08/2021 à 17:35, Even Rouault a écrit :
>
> Patrick,
>
> I guess this is at least relevant for the ubuntu-full config that uses
> libspatialite from the distro. This libspatialite must link against proj
> 6.3.1 from the Ubuntu 20.04 distro, whereas the GDAL we build will link
> against the PROJ built in the image, so without that trick, crashes would
> happen.
>
> Even
> Le 26/08/2021 à 17:21, Patrick Young a écrit :
>
> Hi,
>
> I was curious how relevant building an internal PROJ library is these days
> as described in this note
>
> https://trac.osgeo.org/gdal/wiki/BuildingOnUnixGDAL25dev
>
> I noticed GDAL's docker builds still do this.  Are there some common
> dependencies that still use the older PROJ?
>
> Many thanks!
> Patrick
>
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