I'm using postgresql 8.3.12 and have set it with postgresl-config. Nevertheless dev-db/postgis-1.5.2-r3 fails to install:
* Messages for package dev-db/postgis-1.5.2-r3:
* You must build dev-db/postgis against PostgreSQL 8.3 or higher.
* Set an appropriate slot with postgresql-config.
* ERROR: dev-db/postgis-1.5.2-r3 failed (setup phase):
* postgresql-config not set to 8.3 or higher.

