I'm currently trying to install PostGIS. I already have PostgreSQL installed, and I've followed this link (except I changed the geos version to 3.5.0 and postgis to 2.2.2) down to the final step which is to log into the template database and run "create extension postgis;". Doing so produces the following error, and I can only find this link which does not apply to me as everything is freshly installed today, and as per the linked tutorial I did build from the source, too.
Doing so produces this error:
ERROR: could not load library "/usr/lib/postgresql/9.5/lib/postgis-2.2.so": /usr/lib/postgresql/9.5/lib/postgis-2.2.so: undefined symbol: lwgeom_sfcgal_version
I am running Ubuntu 16.04.
Additionally:
jack@jack-VirtualBox:~$ apt-file search liblwgeom
liblwgeom-2.2-5: /usr/lib/liblwgeom-2.2.so.5
liblwgeom-2.2-5: /usr/lib/liblwgeom-2.2.so.5.0.0
liblwgeom-2.2-5: /usr/share/doc/liblwgeom-2.2-5/NEWS.Debian.gz
liblwgeom-2.2-5: /usr/share/doc/liblwgeom-2.2-5/changelog.Debian.gz
liblwgeom-2.2-5: /usr/share/doc/liblwgeom-2.2-5/copyright
liblwgeom-2.2-5: /usr/share/lintian/overrides/liblwgeom-2.2-5
liblwgeom-dev: /usr/include/liblwgeom.h
liblwgeom-dev: /usr/include/liblwgeom_topo.h
liblwgeom-dev: /usr/lib/liblwgeom.a
liblwgeom-dev: /usr/lib/liblwgeom.so
liblwgeom-dev: /usr/share/doc/liblwgeom-dev/NEWS.Debian.gz
liblwgeom-dev: /usr/share/doc/liblwgeom-dev/changelog.Debian.gz
liblwgeom-dev: /usr/share/doc/liblwgeom-dev/copyright
jack@jack-VirtualBox:~$ sudo apt-get install liblwgeom-dev
[sudo] password for jack:
Reading package lists... Done
Building dependency tree
Reading state information... Done
liblwgeom-dev is already the newest version (2.2.2+dfsg-4.pgdg16.04+1).
0 to upgrade, 0 to newly install, 0 to remove and 248 not to upgrade.
Does anybody know what the cause of this error is?
Thanks in advance
答案 0 :(得分：0)
您是否尝试过再次重建？就像您在帖子中提供的gis.stackexchange链接一样解释？
我还使用postgis的新版本进行了新的postgresql安装：
ubuntu 16.04，postgresql 9.5，postgis 2.2.2;
+ library：GEOS 3.5.0，PROJ.4 4.9.2，GDAL 2.1.1，JSON-C 0.12.1，libwml2 2.9.4;