[postgis-users] Fwd: Re: Broken installs for PostGIS for Ubuntu 20.04LTS / Focal?

Marco Boeringa marco at boeringa.demon.nl
Fri May 15 04:58:38 PDT 2020


Hi Regina,

Yes, I found this via Google. After the update, it now indeed errors out 
on a 404. ST_Collect also no longer mentions it, so that seems fine now.

I do slightly wonder by the way why ST_Accum wasn't simple 
re-implemented as a wrapper around 'array_agg'. While I appreciate 
breaking changes may be necessary and are to be expected for a major 
version update like 2.x to 3.x, in this particular case, where wrapping 
the function would have been an easy solution, could have avoided 
breaking existing code with minimal effort and maintenance overhead.

Anyway, the required code changes are luckily minimal as well, just 
replace 'ST_Accum()' with 'array_agg()' as per the OSGeo tickets I saw, 
so that is not a big deal. I have now implemented this in my own code.

Marc,

Op 15-5-2020 om 13:24 schreef Regina Obe:
>
> Yes stray doc.  Did you find this via google.  Looks like that page 
> last got updated 4/17/2019.   It’s the nature of how we build the docs 
> that the updates overwrite existing for a particular Minor version, 
> but don’t delete.
>
> So it existed early in the life cycle of 3.0 but was later removed
>
> Anyway I’ve deleted ST_Length2D_Spheroid.html and 
> ST_Point_Inside_Circle.html which also seemed to have the same issue
>
> *From:*postgis-users [mailto:postgis-users-bounces at lists.osgeo.org] 
> *On Behalf Of *Darafei "Kom?pa" Praliaskouski
> *Sent:* Friday, May 15, 2020 5:55 AM
> *To:* PostGIS Users Discussion <postgis-users at lists.osgeo.org>
> *Subject:* Re: [postgis-users] Fwd: Re: Broken installs for PostGIS 
> for Ubuntu 20.04LTS / Focal?
>
> It is mentioned in changelog and removed from the docs. For 
> some reason there is stray page from older release.
>
> On Fri, May 15, 2020 at 12:52 PM Tom van Tilburg 
> <tom.van.tilburg at gmail.com <mailto:tom.van.tilburg at gmail.com>> wrote:
>
>     It's the first thing I ran into as well after upgrading .
>
>     But it hasn't been mentioned in the docs? Whoops... time for an
>     issue...
>
>     Tom
>
>     On Fri, May 15, 2020 at 10:56 AM Marco Boeringa
>     <marco at boeringa.demon.nl <mailto:marco at boeringa.demon.nl>> wrote:
>
>         Tom,
>
>         It now appears the PostGIS team indeed removed 'ST_Accum', but
>         forgot to update the online PostGIS Help. I see two OSGEO
>         tickets related to this:
>
>         https://trac.osgeo.org/postgis/ticket/4356
>
>         https://trac.osgeo.org/postgis/changeset/17397
>
>         Both mention replacing 'ST_Accum' with 'array_agg'.
>
>         Marco
>
>         Op 15-5-2020 om 10:38 schreef Marco Boeringa:
>
>             Tom,
>
>             One more question:
>
>             After successfully installing the PostGIS 3.0.1 extension
>             using CREATE EXTENSION in pgAdmin4 on PostgreSQL 12.3 on
>             Ubuntu 20.04 Focal, I now ran into an issue where it
>             appears the 'ST_Accum' function is missing in my PostGIS
>             install. My code calls this, and it failed. I then had a
>             look at the function list in pgAdmin, and indeed
>             'ST_Accum' is not listed. I do see loads of other PostGIS
>             functions, just 'ST_Accum' seems missing (although I
>             cannot garantuee there are a few more missing functions,
>             but the list seems pretty comprehensive from a quick look,
>             and the CREATE EXTENSION call went without a hitch).
>
>             Can you confirm you see 'ST_Accum' in your PostGIS 3.0.1
>             function list if you look in pgAdmin? The PostGIS Help
>             does not mention some deprecation of this function:
>
>             https://postgis.net/docs/ST_Accum.html
>
>             Marco
>
>             Op 14-5-2020 om 11:42 schreef Tom van Tilburg:
>
>                 Whatever lives in /usr/local/lib was my manual build
>                 so I had to delete that manually.
>
>                 I did  `sudo rm /usr/local/lib/libgeos*` (same for
>                 proj and sfcgal)
>
>                 On top of that I purged all old package configurations
>                 `sudo apt purge <packagename>` just to be sure but I
>                 don't think it is needed.
>
>                 Best,
>
>                  Tom
>
>                 On Thu, May 14, 2020 at 10:45 AM Marco Boeringa
>                 <marco at boeringa.demon.nl
>                 <mailto:marco at boeringa.demon.nl>> wrote:
>
>                     Hi Tom,
>
>                     Thanks for the tip, but what did you do to remove
>                     the old install? Did you rely on Apt or Synaptic
>                     to remove the old libgeos version, or did you
>                     manually clean up folders? I had two versions of
>                     libgeos as well (3.7 and 3.8) if I remember well
>                     (need to start up the VM again to check), and
>                     removed the older one through Synaptic just
>                     leaving the 3.8 version, but that wasn't enough to
>                     solve my particular issues.
>
>                     Marco
>
>                     Op 14-5-2020 om 10:32 schreef Tom van Tilburg:
>
>                         I think I solved it.
>
>                         The issue lies with gdal, not postgis (test by
>                         running `gdalinfo`), and it turns out there
>                         was an old install of libgeos (3.7) in my
>                         /us/local/lib. After simply removing all
>                         related files in /usr/local/lib gdal (and
>                         postgis and qgis) stopped complaining (I had
>                         to remove old installs of geos, proj and
>                         sfcgal for that).
>
>                         This issue put me on the right track:
>
>                         https://github.com/OSGeo/gdal/issues/2214
>
>                         T.
>
>                         On Wed, May 13, 2020 at 3:15 PM Marco Boeringa
>                         <marco at boeringa.demon.nl
>                         <mailto:marco at boeringa.demon.nl>> wrote:
>
>                             Thanks Tom,
>
>                             I have seen a similar error related to the
>                             "libgdal26" library, but that was after
>                             other trials to get something running on
>                             Ubuntu 20.04 Focal, where I successfully
>                             installed PostGIS 2.5.4, but then
>                             encountered issues when my code called the
>                             "postgis_full_version()" function and
>                             errored out with the error message below
>                             related to the "libgdal.so.26" library.
>                             However, as said, this was with PostGIS
>                             2.5.4, not with the PostGIS 3.0.1 I
>                             actually want to install at this moment
>                             and that gave the other error related to
>                             the "postgis-3.so" library.
>
>                             SQL Error [XX000]: ERROR: could not load
>                             library
>                             "/usr/lib/postgresql/11/lib/rtpostgis-2.5.so
>                             <http://rtpostgis-2.5.so>":
>                             /usr/lib/libgdal.so.26: undefined symbol:
>                             GEOSMakeValid_r
>                               Where: SQL statement "SELECT
>                             public.postgis_gdal_version()"
>                             PL/pgSQL function postgis_full_version()
>                             line 34 at SQL statement
>
>                             Marco
>
>                             Sorry for the short answer, am on the way
>                             currently. Will try to do a decent report
>                             tonight.
>
>                             Error is roughly the same but comes from
>                             libgdal26 in my case when doing apt
>                             install qgis after an upgrade to 20.04.
>
>                             best, Tom
>
>                             On Wed, 13 May 2020, 14:48 Marco Boeringa,
>                             <marco at boeringa.demon.nl
>                             <mailto:marco at boeringa.demon.nl>> wrote:
>
>                                 Thanks for the response Tom, but could
>                                 you be a bit more specific?
>
>                                 What do you mean with "Same problem
>                                 with qgis"? Do you mean you've also
>                                 encountered a "undefined symbol:
>                                 GEOSMakeValid" error related to the
>                                 "postgis-3.so" library when trying to
>                                 use some tool in QGIS?
>
>                                 I have installed PostgreSQL 12 and
>                                 PostGIS 3.0.1 via Synaptic on Ubuntu
>                                 20.04 (Focal) and use CREATE EXTENSION
>                                 (via pgAdmin4), when I encounter the
>                                 error.
>
>                                 Marco
>
>                                 Op 13-5-2020 om 14:40 schreef Tom van
>                                 Tilburg:
>
>                                     Same problem with qgis
>
>                                     On Wed, 13 May 2020, 11:14 Marco
>                                     Boeringa, <marco at boeringa.demon.nl
>                                     <mailto:marco at boeringa.demon.nl>>
>                                     wrote:
>
>                                         Hi all,
>
>                                         Is there someone who can
>                                         confirm they have been able to
>                                         install PostGIS
>                                         3.0.1 via the official APT
>                                         repository?:
>
>                                         https://wiki.postgresql.org/wiki/Apt
>
>                                         After using the Synaptics
>                                         Package Manager to install the
>                                         three packages
>                                         involved
>                                         ("postgresql-12-postgis-3"/"postgresql-12-postgis-3-dbgsym"/"postgresql-12-postgis-3-scripts"),
>
>                                         and subsequently trying to
>                                         create the PostGIS extension
>                                         in pgAdmin4, I
>                                         get the following error:
>
>                                         ERROR: could not load library
>                                         "/usr/lib/postgresql/12/lib/postgis-3.so":
>
>                                         /usr/lib/postgresql/12/lib/postgis-3.so:
>                                         undefined symbol: GEOSMakeValid
>
>                                         I have been trying different
>                                         things to fix this for past
>                                         two days
>                                         including re-install, but to
>                                         no avail. I have also
>                                         attempted to include
>                                         the UbuntuGIS repository as a
>                                         potential alternative resource
>                                         of PostGIS
>                                         packages, but discovered the
>                                         UbuntuGIS repository is
>                                         lagging behind and
>                                         doesn't yet have packages for
>                                         20.04LTS.
>
>                                         Marco
>
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> -- 
>
> Darafei Praliaskouski
>
> Support me: http://patreon.com/komzpa
>
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