Hello, On Fri, 2018-01-05 at 12:19 -0800, Adrian Klaver wrote: > On 01/05/2018 11:57 AM, Travis Allison wrote: > > Distro and version: Ubuntu 16.04 LTS. > > > > If memory serves, I installed 9.5 using synaptic and 9.6 using apt- > > get, > > where I followed the instructions from this site: > > https://www.postgresql.org/download/linux/ubuntu/ > > > > I also have an anaconda installation of postgresql, but that is a > > version less than 9.6. > > > > Here are the results for postgresql using dpkg-query -l > > Well somehow a Postgres 10 version of pg_config.h got installed. > Is there an instance of Postgres 10 running? > > > > > ii postgresql 9.5+173 > > all > > object-relational SQL database (supported > > version) > > ii postgresql-9.5 9.5.3- > > 0ubuntu0.16.04 > > amd64 object-relational SQL database, version > > 9.5 server > > ii postgresql-9.6 9.6.5-1.pgdg16.04+2 > > amd64 object-relational SQL database, version > > 9.6 > > server > > ii postgresql-client-9.5 9.5.3- > > 0ubuntu0.16.04 > > amd64 front-end programs for PostgreSQL 9.5 > > ii postgresql-client-9.6 9.6.5-1.pgdg16.04+2 > > amd64 front-end programs for PostgreSQL 9.6 > > ii postgresql-client-common 173 > > all > > manager for multiple PostgreSQL client > > versions > > ii postgresql-common 173 > > all > > PostgreSQL database-cluster manager > > ii postgresql-contrib-9.5 9.5.3- > > 0ubuntu0.16.04 > > amd64 additional facilities for PostgreSQL > > ii postgresql-contrib-9.6 9.6.5-1.pgdg16.04+2 > > amd64 additional facilities for PostgreSQL > > ii postgresql-server-dev-9.5 9.5.3- > > 0ubuntu0.16.04 > > amd64 development files for PostgreSQL 9.5 > > server-side programming > > ii postgresql-server-dev-9.6 9.6.5-1.pgdg16.04+2 > > amd64 development files for PostgreSQL 9.6 > > server-side programming > > > > > > > Shouldn't the OP check the libpq-dev libraries as well? Not an expert. My two cents. Rob