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

[Marco Boeringa]

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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