---
title: Build the latest PgPool-II on Debian Etch
date: "2010-12-14T00:00:00+01:00"
tags: [Debian, PgPool-II]
slug: build-pgpool-on-debian
---

After having build PgPool-II on Red Hat Enterprise Linux 5.5 without any
problem, I tried to build it on a fresh Debian Etch. The catch is that I did
not want to install PostgreSQL 9.0, but just extract it from the binary
packages provided by Entreprisedb (with option `--extract-only 1`).

Whatever options I passed to `./configure`, it resulted in the same error:

{{< highlight text >}}
checking for PQexecPrepared in -lpq... no
configure: error: libpq is not installed or libpq is old
{{< /highlight >}}

Here is the answer: the binary package contains the libpq with the name
`libcrypto.so.0.9.8` (the RHEL name) when pgpool is looking `libcrypto.so.6`
on Debian. The same applies to `libssl`. So a simple

{{< highlight bash >}}
ln -s libcrypto.so.0.9.8 libcrypto.so.0.9.8
ln -s libssl.so.0.9.8 libssl.so.6
{{< /highlight >}}

before your `./configure` will solve it!