If you don't need the ECW plugin, skip anything that references ECW below.


For ECW SDK
===========

The following is the Erdas ECW JPEG 2000 Codec SDK download site.

http://www.erdas.com/Products/ERDASProductInformation/tabid/84/currentid/1142/default.aspx

Register, and download the ECW JPEG2000 Codec SDK Source Code.
  Note that downloading and installing the ECW JPEG 2000 Codec SDK requires agreeing to a license. 
  Please review the license terms carefully.


Download ECW JPEG2000 Codec SDK Source Code 
mkdir full_path_to_ECW_INSTALL_directory/ECW_INSTALL
mkdir full_path_to_ECW_INSTALL_directory/ECW_INSTALL/include
cd libecwj2-3.3
./configure --prefix=full_path_to_ECW_INSTALL_directory/ECW_INSTALL 

make
make install

For GDAL
========

Make sure your $ORACLE_HOME environment variable is set.  If it is, SDO_GEORASTER will automatically be part of the GDAL build.


http://trac.osgeo.org/gdal/
Click on BuildHints
Click on DownloadSource
click on http://download.osgeo.org/gdal 
click on daily
stable is stable code, trunk is code under development (you choose which one you want to compile).
                       trunk may contain fixes to SDO_GEORASTER extension that are not in stable.
.gz files are source code for UNIX/Linux, .zip files are source code for Windows
Unzip the source
cd to top level directory of source tree 


mkdir full_path_to_GDAL_INSTALL_directory/GDAL_INSTALL

Call configure. Backslash ('\') is the continuation character for a UNIX command line
./configure --help

./configure \
--prefix=full_path_to_GDAL_INSTALL_directory/GDAL_INSTALL \
--with-ecw=full_path_to_GDAL_INSTALL_directory/ECW_INSTALL

setenv LD_LIBRARY_PATH full_path_to_GDAL_INSTALL_directory/ECW_INSTALL/lib
make
make install

Add full_path_to_GDAL_INSTALL_directory/GDAL_INSTALL/bin to your path environent variable.
To test install, georaster should appear as one of the gdalinfo formats.
For example, run the gdalinfo command as follows:

gdalinfo --formats

  --  ECW (rw): ERMapper Compressed Wavelets
  --  GeoRaster (rw+): Oracle Spatial GeoRaster