1. How to install the GRASS/Postgres ( aka pg_grass) interface modules.

These instructions are applicable on the new style 'make install' GRASS
compilation and installation. It is supposed you have successfully compiled and
installed the core modules and libraries of GRASS.


A. First, make sure Postgres libpq libraries and headers are installed in your
system. Check them up in /usr/local/pgsql/. As for the version of Postgres,
these modules were tested with Postgres 6.5.2. Do not forget, to access the
database in pgsql you need to have appropriate permissions in pg_hba.conf,
and BE a user of postgres (with the same name as of GRASS). As rule, postgres
does not allow root to be a user, so if root holds PERMANENT folders on your
GRASS server, change to a user account to work with pg_grass modules.

B. Become root and change to the GRASS source root.

	cd /usr/grass5.0/src
	tar zxvf <path_to_pg_grass_tar_gz>
	
C. Edit file src/CMD/lists/GRASS and add the list of the new modules to the
bottom of the GRASS list.

D. Edit the src/CMD/head/<your_architecture_name>. See if the paths to libpq
libraries and headers are there. If not, add them as in the sample "head" file
(used to compile on Linux), found in the tar archive. Actually, this may be
adding two following lines:

PQLIB		    = -L/usr/local/pgsql/lib -lpq -lcrypt
PQINCPATH	    = -I/usr/local/pgsql/include

E. Edit the file src/CMD/next_step/<your_architecture_name>.
Remove the line DONE and replace it with the line showing the path to the first
of the new modules added to GRASS list in step A.

F. Now, change to the /usr/grass5.0 and type 'make install'. The script will 
compile the new modules and add links to them to the front-end directory of 
GRASS.

Of course, you may also get all stuff compiled with old type gmake5-gmakelinks5
from the source directory.
------------------------------

Optionally (and recommended) add the TCLTKGRASS menus for these new
modules.

 Change to the tcltkgrass root directory:
	
	cd /usr/local/grass5.0/tcltkgrass
	tar zxvf <path_to_tcltk_pg_grass_tar_gz>
	
This will place module menus to the "module" directory.
Now, change the main menu bar to access the new modules:

	cp main/menu.tcl main/menu.tcl.orig
	patch main/menu.tcl < menu.diff
	

--
-------------------------------
Optionally (and also recommended) recompile NVIZ2.2 with Postgres patch.
This gives you option to query Postgres from 3D-maps.

	cp NVIZ2.2_postgres_**.diff /usr/grass5.0beta/src.contrib/GMSL
	cd /usr/grass5.0beta/src.contrib/GMSL
	patch -p1 < NVIZ2.2_postgres_**.diff
	
(you may need then to change GL include path in src/Gmakefile 
to fit your computer, or just run configure again)
--
/*
			alex shevlakov sixote@yahoo.com
*/