No instance of Postgres 10 running. I took Tom's suggestion: I ran dpkg -S /usr/include/postgresql/pg_config.h Result: libpq-dev: /usr/include/postgresql/pg_config.h
Here is the result from dpkg-query -l | grep libpq ii libpq-dev 10.0-1.pgdg16.04+1 amd64 header files for libpq5 (PostgreSQL library) ii libpq5:amd64 10.0-1.pgdg16.04+1 amd64 PostgreSQL C client library So thanks to all of your help, I've identified the culprit. Any suggestions on what to do next? On Fri, Jan 5, 2018 at 12:19 PM, Adrian Klaver <adrian.kla...@aklaver.com> 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 >> >> >> > > > -- > Adrian Klaver > adrian.kla...@aklaver.com >