[GRASSLIST:4625] Compiling Grass 5.3 and Postgresql

[ssherman]

I am attempting to compile GRASS 5.3 from source on a Fedora Core 2 system 
with PostgreSQL (I am running Posgres 7.4.5). I get the following error:

checking whether to use PostgreSQL... yes
checking for location of PostgreSQL includes...
checking for libpq-fe.h... no
configure: error: *** Unable to locate PostgreSQL includes.


I am new to both GRASS and Linux but I know that postgres is working and that 
the header files exist. They are located in /usr/local/pgsql/include/ I don't 
know how to get past this error.