Issues installing GDAL with PostgreSQL

I’m trying to install gdal-1.11.0 on CentOS 6 machine.
Following the instructions, this is my config

./configure --prefix /usr/local  --with-fgdb=/usr/local/FileGDB_API --with-pg=/usr/pgsql-9.3/bin/pg_config

As the configure process runs, I see this in the output:

checking for PostgreSQL... yes

However, at the end of the configure output, I see this:

PostgreSQL support:        no

PostgreSQL 9.3 is up and running with postgis on it, the path to pg_config is correct. I know the configure is reading it, because if I put a bad path in –with-pg, it complains…
I had prior installs of earlier versions of GDAL, and GDAL 1.11 without postgreSQL before I realized that I need to build it with PostgreSQL support.
What am I missing?