installation - How to install a patch in PostGIS

Can anybody tell me how to install this patch in PostGIS?

http://trac.osgeo.org/postgis/ticket/413

http://trac.osgeo.org/postgis/changeset/7534

I need to use the ST_OffsetCurve function. but it seems it's not available in the PostGIS installation(I installed the version "postgis-pg90-setup-1.5.3-2").

Can anybody tell me how to make it work?

Answer

You'll need access to PostGIS source code, which is freely available on their site along with their binaries. Then pretty much install PostGIS again after patching the code.

The patching instructions is in the thread:

tar xvfz postgis-1.5.0.tar.gz && patch -p0 < postgis-1.5.0-RafalMagda.patch 

Then compile and install PostGIS again.

If you're on a unix environment, this is quite routine and simple.

You can also do this on Windows, but will require additional software.

see: http://trac.osgeo.org/postgis/wiki/DevWikiWinMingWSys_14_15

In step 15, you'll need to find and use a patch command similar to above.

Good luck!