PostGIS 2.0.3 Installation on Ubuntu 12.04¶

The best is to visit http://postgis.net to get all the up to date installation details.

Warning

this document will eventually be out dated please refer to http://www.postgis.net for installation guide

Install dependencies

Before you can install PostGis 2.0.3, some dependencies have to be installed first. You can do this by using the Linux command apt-get. It is recommended to install postgresql-9.2 before you install PostGis 2.0.3. For the installation guide of postgresql-9.2 see Installation of Postgresql-9.2 on Ubuntu 12.04.

The first step is to type the following command into your terminal to install all dependencies.
```
$ sudo apt-get install build-essential postgresql-server-dev-9.2 libxml2-dev libproj-dev libjson0-dev xsltproc docbook-xsl
docbook-mathml libgdal1-dev
```
Hint

libgdal1-dev is needed for raster support and is required if you want to build the postgresql extension!
Build Geos 3.3.2 or higher

GEOS is used for the topology support and because Postgis 2.0 requires a GEOS version 3.3.2 or higher, you have to build this before you can install postgis itself. (genereally Ubuntu comes with an GEOS version lower than 3.3.2!) Download your favourite version of geos (has to be 3.3.2 or higher!) using the following command line:
```
$ wget http://download.osgeo.org/geos/geos-3.3.8.tar.bz2
```
Unpack it and go to the unpacked folder:
```
$ tar xvfj geos-3.3.8.tar.bz2
$ cd geos-3.3.8
```
Now you can install geos by using the following command lines (this process may take a while)
```
$ ./configure
$ make
$ sudo make install
$ cd ..
```
Install postgis

The following steps are almost the same like instructed in Step 2. Download postgis 2.0.3, unpack it and go to unpacked folder.
```
$ wget http://download.osgeo.org/postgis/source/postgis-2.0.3.tar.gz
$ tar xfvz postgis-2.0.3.tar.gz
$ cd postgis-2.0.3
```
Now postgis can be installed:
```
$ ./configure
$ make
$ sudo make install
$ sudo ldconfig
$ sudo make comments-install
```
Hint

PostGIS 2.0.3 can be configured to disable topology or raster components using the configure flags –without-raster and/or –without-topology.

The default is to build both. Note that the raster component is required for the extension installation method for postgresql!

Create the postgis extension for postgresql¶

Common way

The best way to install the postgis extension is by using templates. After downloading and installing postgresql and postgis you create a database called template_postigsxxx (xxx should be replaced by your version of postgis; in this case postgis 2.0.3 was used).

$ sudo -u postgres createdb template_postgis203

Before installing the extension you have to log in to the database

$ psql template_postgis203

and now you can create the extension

$ create extension postgis;

Warning

Do not forget the semicolon at the end! Otherwise this statement will have no effect!

Now you can easily create a new database wich automatically has the postgis extension as well, e.g create a new database called geonode like this

$ sudo -u postgres createdb -T template_postgis203 geonode

Alternative

If you already created a db called geonode, then you can use this alternative to create the extension for postigs.

By typing

$ sudo su postgres

you log in as the user postgres.

By using the following command line

$ psql geonode

you log in to the database geonode.

To install the posgis extension type

$ create extension postgis;

Now you should have successfully installed the postgis extension in your geonode database.