[postgis-devel] Error creating postgis extension

[Paul Ramsey]

>From this twitter convo:

https://twitter.com/pwramsey/status/1057699360257916930

It looks like the problem is that the installation of
/usr/proj49/lib/libproj.so doesn't remove /usr/libproj.so and as a result
postgis is picking up the version in /usr/ before the new version that has
the symbols we want.

- So, can the proj49 package obsolete the proj package?
- Just out of curiosity, why the change into a specific version-named
package instead of the old name?

P.

On Thu, Oct 25, 2018 at 10:29 PM Regina Obe <lr at pcorp.us> wrote:

> Proj 4.9.3 is definitely fine. I packaged the windows 2.5.0 builds with
> 4.9.3 proj and have had no issues.
>
>
>
> From what I have observed, I can swap out the proj 4.8 with the 4.9 and
> not have issue.  The other way around won't work if you compiled PostGIS
> with the newer proj.
>
>
>
> I would guess what Darafei is saying is the issue and it's using the
> system one or the one you compiled GDAL with and perhaps your GDAL is
> compiled against proj 4.8 or lower or that is what is installed in the
> system.
>
>
>
> It's normally fine to do that (use a lower version of proj than what you
> compiled PostGIS with except for 4.9 up because proj is undergoing major
> enhancements.  The 5+ stuff I don't think we are using yet, but probably
> will in PostGIS 3.
>
>
>
> We do have conditional logic for proj < 4.9, proj >= 4.9 since 4.9
> introduced some geographicLib api stuff that gave better answers for
> geography area and other measurements than what our internal postgis
> functions provided. When PostGIS is compiled against 4.9 or above, it
> switches to using the proj 4.9+ api instead of our internal less accurate
> one.  so if it can't find those newer functions in your proj library,
> you'll get that error below if you compiled with the >= 4.9 version.
>
>
>
>
>
> *From:* postgis-devel [mailto:postgis-devel-bounces at lists.osgeo.org] *On
> Behalf Of *Darafei "Kom?pa" Praliaskouski
> *Sent:* Thursday, October 25, 2018 10:08 AM
> *To:* PostGIS Development Discussion <postgis-devel at lists.osgeo.org>
> *Subject:* Re: [postgis-devel] Error creating postgis extension
>
>
>
> It looks like you built it against proj 4.9 but forgot to ship it.
>
> On Thu, Oct 25, 2018 at 5:06 PM Devrim Gündüz <devrim at gunduz.org> wrote:
>
>
> Hi,
>
> On Thu, 2018-10-25 at 12:45 +0100, Paul Ramsey wrote:
> > Looks like a libproj version mismatch? Maybe the spec file for 2.5 needs
> to
> > peg a minimum libproj version? Let me confirm…
>
> I built it against Proj 4.9.3. I can work on packaging Proj 5.2, but it
> also
> requires a custom GDAL package as well, so the amount of work is
> non-trivial.
> I'll do that , if I really have to.
>
> Regards,
> --
> Devrim Gündüz
> EnterpriseDB: https://www.enterprisedb.com
> PostgreSQL Consultant, Red Hat Certified Engineer
> Twitter: @DevrimGunduz , @DevrimGunduzTR
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>
>
>
>
> --
>
> Darafei "Komяpa" Praliaskouski
> OSM BY Team - http://openstreetmap.by/
> xmpp:me at komzpa.net mailto:me at komzpa.net
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