Ubuntu, Plone and problems with openldap and python-ldap

For some reason I've always had problems with python-ldap and openldap with Plone when I'm using Ubuntu. I've always managed to solve the problem by somehow building openldap from sources and been happy ever since. Now with fresh Ubuntu install I bumbed once again to the same problem and decided to write a reminder how I get things working again.

This time I used Panyasan's buildout example with one extra environment line. Without that line openldap won't compile on ubuntu. Instead of compiling succesfully it throws me an error "ubuntu getpeereid.c:52: error: storage size of ‘peercred’ isn’t known"

Here are the important parts:


[buildout]

parts =
    zope2
    productdistros
    instance
    zopepy
    openldap
    python-ldap

...

[versions]
python-ldap = 2.3.6

[openldap]
recipe = zc.recipe.cmmi
url = ftp://gd.tuwien.ac.at/infosys/network/OpenLDAP/openldap-stable/openldap-stable-20071118.tgz
extra_options = --with-sasl --with-tls --enable-slapd=no
environment = CPPFLAGS=-D_GNU_SOURCE

[python-ldap]
recipe = zc.recipe.egg:custom
egg = python-ldap
include-dirs = ${openldap:location}/include
library-dirs = ${openldap:location}/lib

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