You should not have to, as it is already part of Oneric or newer, per the Fix Released tag next to the Ubuntu package at the top of this bug report and noted in the revision log below (also linked above).
http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/oneiric/evolution- data-server/oneiric/revision/165 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evolution in Ubuntu. https://bugs.launchpad.net/bugs/853905 Title: Contact birthdays missing from Calendar Status in The Evolution Mail & Calendaring Tool: Fix Released Status in “evolution” package in Ubuntu: Fix Released Bug description: Both local and Google Contact birthdays are missing from the evolution calendar. This is the case for both local contacts and my Google contacts. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: evolution 3.1.91-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4 Uname: Linux 3.0.0-11-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 1.23-0ubuntu1 Architecture: amd64 Date: Mon Sep 19 10:20:21 2011 ProcEnviron: LANGUAGE=en PATH=(custom, no user) LANG=en_US.utf8 SHELL=/bin/bash SourcePackage: evolution UpgradeStatus: Upgraded to oneiric on 2011-09-09 (10 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/evolution/+bug/853905/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp