This is the legacy version of osm2pgsql package.

osm2pgsql is a utility program that converts OpenStreetMap data to
PostGIS-enabled PostgreSQL databases. 

osm2pgsql 1.9.2 is the latest version with support to 32 bit
architectures. If you have a Slackware64 and want to install a version
earlier than 1.9.2, please refer to osm2pgsql package.