django/docs/ref/contrib/gis/install/spatialite.txt

=====================
Installing Spatialite
=====================

`SpatiaLite`__ adds spatial support to SQLite, turning it into a full-featured
spatial database.

Check first if you can install Spatialite from system packages or binaries. For
example, on Debian-based distributions, try to install the ``spatialite-bin``
package. For Mac OS X, follow the
:ref:`specific instructions below<spatialite_macosx>`. For Windows, you may
find binaries on `Gaia-SINS`__ home page. In any case, you should always
be able to :ref:`install from source<spatialite_source>`.

When you are done with the installation process, skip to :ref:`create_spatialite_db`.

__ https://www.gaia-gis.it/fossil/libspatialite
__ http://www.gaia-gis.it/gaia-sins/

.. _spatialite_source:

Installing from source
~~~~~~~~~~~~~~~~~~~~~~

:doc:`GEOS and PROJ.4</ref/contrib/gis/install/geolibs>` should be installed
prior to building SpatiaLite.

SQLite
^^^^^^

Check first if SQLite is compiled with the `R*Tree module`__. Run the sqlite3
command line interface and enter the following query::

    sqlite> CREATE VIRTUAL TABLE testrtree USING rtree(id,minX,maxX,minY,maxY);

If you obtain an error, you will have to recompile SQLite from source. Otherwise,
just skip this section.

To install from sources, download the latest amalgamation source archive from
the `SQLite download page`__, and extract::

    $ wget https://sqlite.org/sqlite-amalgamation-3.6.23.1.tar.gz
    $ tar xzf sqlite-amalgamation-3.6.23.1.tar.gz
    $ cd sqlite-3.6.23.1

Next, run the ``configure`` script -- however the ``CFLAGS`` environment variable
needs to be customized so that SQLite knows to build the R*Tree module::

    $ CFLAGS="-DSQLITE_ENABLE_RTREE=1" ./configure
    $ make
    $ sudo make install
    $ cd ..

__ https://www.sqlite.org/rtree.html
__ https://www.sqlite.org/download.html

.. _spatialitebuild:

SpatiaLite library (``libspatialite``)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Get the latest SpatiaLite library source bundle from the
`download page`__::

    $ wget http://www.gaia-gis.it/gaia-sins/libspatialite-sources/libspatialite-4.1.0.tar.gz
    $ tar xaf libspatialite-4.1.0.tar.gz
    $ cd libspatialite-4.1.0
    $ ./configure
    $ make
    $ sudo make install

.. note::

    For Mac OS X users building from source, the SpatiaLite library *and* tools
    need to have their ``target`` configured::

        $ ./configure --target=macosx

__ http://www.gaia-gis.it/gaia-sins/libspatialite-sources/

.. _spatialite_macosx:

Mac OS X-specific instructions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To install the SpatiaLite library and tools, Mac OS X users can choose between
:ref:`kyngchaos` and `Homebrew`_.

KyngChaos
^^^^^^^^^

First, follow the instructions in the :ref:`kyngchaos` section.

When :ref:`create_spatialite_db`, the ``spatialite`` program is required.
However, instead of attempting to compile the SpatiaLite tools from source,
download the `SpatiaLite Binaries`__ for OS X, and install ``spatialite`` in a
location available in your ``PATH``.  For example::

    $ curl -O http://www.gaia-gis.it/spatialite/spatialite-tools-osx-x86-2.3.1.tar.gz
    $ tar xzf spatialite-tools-osx-x86-2.3.1.tar.gz
    $ cd spatialite-tools-osx-x86-2.3.1/bin
    $ sudo cp spatialite /Library/Frameworks/SQLite3.framework/Programs

Finally, for GeoDjango to be able to find the KyngChaos SpatiaLite library,
add the following to your ``settings.py``::

    SPATIALITE_LIBRARY_PATH='/Library/Frameworks/SQLite3.framework/SQLite3'

__ http://www.gaia-gis.it/spatialite-2.3.1/binaries.html

Homebrew
^^^^^^^^

`Homebrew`_ handles all the SpatiaLite related packages on your behalf,
including SQLite3, SpatiaLite, PROJ, and GEOS. Install them like this::

    $ brew update
    $ brew install spatialite-tools
    $ brew install gdal

Finally, for GeoDjango to be able to find the SpatiaLite library, add the
following to your ``settings.py``::

    SPATIALITE_LIBRARY_PATH='/usr/local/lib/mod_spatialite.dylib'

.. _Homebrew: http://brew.sh/

.. _create_spatialite_db:

Creating a spatial database for SpatiaLite
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

When running ``manage.py migrate`` with a SQLite or SpatiaLite database, the
database file will be automatically created if it doesn't exist. Django will
also ensure that the spatial metadata are initialized in the database.