<div dir="ltr"><div>Whatever lives in /usr/local/lib was my manual build so I had to delete that manually.<br></div><div>I did `sudo rm /usr/local/lib/libgeos*` (same for proj and sfcgal)</div><div>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.</div><div><br></div><div>Best,</div><div> Tom<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 14, 2020 at 10:45 AM Marco Boeringa <<a href="mailto:marco@boeringa.demon.nl">marco@boeringa.demon.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Tom,</p>
<p>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.</p>
<p>Marco<br>
</p>
<div>Op 14-5-2020 om 10:32 schreef Tom van
Tilburg:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>I think I solved it.</div>
<div>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).<br>
</div>
<div><br>
</div>
<div>This issue put me on the right track:</div>
<div><a href="https://github.com/OSGeo/gdal/issues/2214" target="_blank">https://github.com/OSGeo/gdal/issues/2214</a></div>
<div><br>
</div>
<div>T.<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, May 13, 2020 at 3:15
PM Marco Boeringa <<a href="mailto:marco@boeringa.demon.nl" target="_blank">marco@boeringa.demon.nl</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Thanks Tom,</p>
<p>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.<br>
</p>
<p>SQL Error [XX000]: ERROR: could not load library
"/usr/lib/postgresql/11/lib/<a href="http://rtpostgis-2.5.so" target="_blank">rtpostgis-2.5.so</a>":
/usr/lib/libgdal.so.26: undefined symbol: GEOSMakeValid_r<br>
Where: SQL statement "SELECT
public.postgis_gdal_version()"<br>
PL/pgSQL function postgis_full_version() line 34 at SQL
statement</p>
<p>Marco<br>
</p>
<div><br>
<br>
<div dir="auto">
<div>Sorry for the short answer, am on the way
currently. Will try to do a decent report tonight.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Error is roughly the same but comes from
libgdal26 in my case when doing apt install qgis after
an upgrade to 20.04.</div>
<div dir="auto"><br>
</div>
<div dir="auto">best, Tom<br>
<br>
<div class="gmail_quote" dir="auto">
<div dir="ltr" class="gmail_attr">On Wed, 13 May
2020, 14:48 Marco Boeringa, <<a href="mailto:marco@boeringa.demon.nl" target="_blank">marco@boeringa.demon.nl</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Thanks for the response Tom, but could you be
a bit more specific? <br>
</p>
<p>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?</p>
<p>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.<br>
</p>
<div>Marco</div>
<div><br>
</div>
<div>Op 13-5-2020 om 14:40 schreef Tom van
Tilburg:<br>
</div>
<blockquote type="cite">
<div dir="auto">Same problem with qgis</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, 13
May 2020, 11:14 Marco Boeringa, <<a href="mailto:marco@boeringa.demon.nl" rel="noreferrer" target="_blank">marco@boeringa.demon.nl</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all,<br>
<br>
Is there someone who can confirm they have
been able to install PostGIS <br>
3.0.1 via the official APT repository?:<br>
<br>
<a href="https://wiki.postgresql.org/wiki/Apt" rel="noreferrer noreferrer noreferrer" target="_blank">https://wiki.postgresql.org/wiki/Apt</a><br>
<br>
After using the Synaptics Package Manager
to install the three packages <br>
involved <br>
("postgresql-12-postgis-3"/"postgresql-12-postgis-3-dbgsym"/"postgresql-12-postgis-3-scripts"),
<br>
and subsequently trying to create the
PostGIS extension in pgAdmin4, I <br>
get the following error:<br>
<br>
ERROR: could not load library
"/usr/lib/postgresql/12/lib/postgis-3.so":
<br>
/usr/lib/postgresql/12/lib/postgis-3.so:
undefined symbol: GEOSMakeValid<br>
<br>
I have been trying different things to fix
this for past two days <br>
including re-install, but to no avail. I
have also attempted to include <br>
the UbuntuGIS repository as a potential
alternative resource of PostGIS <br>
packages, but discovered the UbuntuGIS
repository is lagging behind and <br>
doesn't yet have packages for 20.04LTS.<br>
<br>
Marco<br>
<br>
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