sfcgal 1.3.7-4 breaks PostGIS, sfcgal 1.3.7-2 did not

[Bas Couwenberg]

On 2019-12-09 09:37, Darafei "Komяpa" Praliaskouski wrote:
> When I install
> http://ftp.mgts.by/debian/pool/main/s/sfcgal/libsfcgal1_1.3.7-4_amd64.deb 
> I
> get the following error message in PostGIS:
> 
> ERROR:  XX000: could not load library
> "/usr/lib/postgresql/11/lib/postgis-3.so":
> /usr/lib/x86_64-linux-gnu/libSFCGAL.so.1: undefined symbol:
> _ZlsRSoPK12__mpz_struct
> 
> With 1.3.7-2 it works okay. Seems 1.3.7-4 for some reason does not pull 
> in
> CGAL?

CGAL is a header-only library since 5.0.

SFCGAL needed several patches to work with that, and postgis still needs 
to be rebuilt with the new sfcgal.

postgis (3.0.0+dfsg-5) in unstable has SFCGAL support disabled, the next 
upload (once cgal & sfcgal have migrated to testing) will enable it 
again.

You're not using the packages from unstable since you're still using 
PG11, so I cannot help you further.

Kind Regards,

Bas