Wrong SFCGAL version used for compiling PostGIS 3.6.0 on Ubuntu?

[Scott]

Hey Greg,

Thank you for the response!

I've rolled everything back to 3.5.3 with libgeos 3.11, until I get a 
better understanding.

Postgis configure is robust and allows you to set/unset all sorts of 
things, including rpath. Mine looks like:

./configure \
    --prefix=/export/gis/local \
    --with-gdalconfig=/export/path/bin/gdal-config \
    --with-geosconfig=/export/path/bin/geos-config \
    --with-pgconfig=/usr/lib/postgresql/15/bin/pg_config \
    --with-sfcgal=/export/path/bin/sfcgal-config

The problem is the environment. When I do an ldd on the newly built 
postgis-3.so, all the paths are correct *if* in my user environment. 
 From another user, the paths default to the system pkg path where the 
older geos 3.11 version is installed.

That's what I'm trying to understand, getting postgres/postgis to use 
the correct lib it's built against.

Thanks again!
Scott

On 9/3/25 10:12, Marco Boeringa wrote:
> Well, it might also be a similar situation as with GEOS, and where I 
> essenially need to wait for the next LTS release (to which I would like 
> to stick and not custom compile myself), before I can benefit from the 
> latest functionality with an updated SFCGAL.
> 
> But I was just wondering, as the situation appears slightly different in 
> the sense that SFCGAL has its own PostgreSQL extension contrary to GEOS, 
> so the setup and situation differs at least partially.
> 
> 
> Greg Troxel <gdt at lexort.com> schreef op 3 september 2025 17:17:54 CEST:
> 
>     Marco Boeringa <marco at boeringa.demon.nl> writes:
> 
>         Hi,
> 
>         I noticed 3.6.0 became available on Ubuntu 24.04 where I am
>         currently
>         running my PostgreSQL / PostGIS install.
> 
>         Is this is a possible error during the packaging for the latest
>         release for Ubuntu?
> 
> 
>     Yes, it seems quite possible :-)
> 
>     I would suggest raising this within Ubuntu, as it seems far more likely
>     to be an Ubuntu packaging issue than a postgis (source release) issue.
> 
>     You might also see which version of SFCGAL is installed on your system,
>     and what the dependency specification is for the postgis package.
>