[Slackbuilds-users] postgis and CGAL 4.12

Konrad J Hambrick kjhambrick at gmail.com
Thu May 24 13:05:30 UTC 2018

Thank you for the replies Willy and Ben.

I'll try Ben's patch as linked by Willy.

As for why is SFCGAL linked to postgis ... I don't recall !

I've been building and installing CGAL and SFCGAL for 'a while' now and I
don't recall why :)

OTOH, I've been building and installing postgis for years and years ( much
longer than CGAL + SFCGAL ).

I've still got a Slackware 13.37 system where I started using postgis.  I
believe it is postgis-1.5.8.  I'll check to see what dependencies are

I'll be able to do some more testing later next week but postgis is working
very well with CGAL 4.11.1 on my work Laptop and I've got a looming work
deadline for a big project that has to go out.

I've also got a feeling that the issue with compiling postgis 2.4.4 with (
CGAL 4.12 + SFCGAL 1.3.5 ) is that Slackware 14.2 ships with boost 1.59
while the stdc++17 flag is only supported in boost version 1.67 and greater.

Anyhow I've got a few avenues to explore now and I'll report back as soon
as I can !

Thanks again for all that y'all do !

-- kjh

On Tue, May 22, 2018 at 9:09 PM, Benjamin Trigona-Harany <
slackbuilds at jaxartes.net> wrote:

> On Sunday, 20 May 2018 09:47:57 PDT Konrad J Hambrick wrote:
> > I the meantime, postgis does work with everything updated EXCEPT
> CGAL-4.12
> > ...
> >
> > Any ideas ?
> So far I've been able to confirm everything you said: PostGIS won't
> compile
> with CGAL 4.12 and SFCGAL. David and I were coordinating on upgrading CGAL
> from 4.9 and the 4.11 upgrade was fine but I missed how it broke PostGIS
> with
> the more recent 4.12. I suppose it's because it's only an optional
> dependency
> for PostGIS ...
> There are a few ways of fixing the issue: remove SFCAL; add
> --without-sfcgal
> to PostGIS's configure; or downgrade CGAL to 4.11. The choice likely
> depends
> on whether you need the additional PostGIS functions provided by SFCAL and
> whether you need SFCGAL on your system for something else!
> Ben
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