Comments on: How To Fix symbol lookup error: /usr/sbin/httpd2-prefork: undefined symbol: apr_ldap_ssl_init

By: ambinanitelo

ambinanitelo — Mon, 26 Jul 2010 04:48:26 +0000

I have the same problem and something was wrong with apr version.

ls -l libapr* gives me

libapr-1.a
libapr-1.la
libapr-1.so -> libapr-1.so.0.4.2
libapr-1.so.0 -> libapr-1.so.0.4.2
libapr-1.so.0.3.8
libapr-1.so.0.4.2
libaprutil-1.so.0 -> libaprutil-1.so.0.3.9
libaprutil-1.so.0.3.9

so there is 0.4.2, 0.3.8 and 0.3.9 – Three libapr versions at the same time!

I did sudo ln -sf libapr-1.so.0.3.8 libapr-1.so.0 and it resolves my problem – apache starts now.

By: newbie

newbie — Thu, 17 Sep 2009 09:33:41 +0000

tried all those things..still doesnt work..can anyone help..its urgent..

By: Gonzalo

Gonzalo — Mon, 10 Aug 2009 03:19:55 +0000

I was having this problem all day long. I'm using a VPS with ubuntu-8.10-i386-minimal and being a total Linux newbie like me, it was a nightmare to fix it.

I searched in a lot of places but I kept having the same problems. After all, I combined all the commands that I found and it worked

sudo aptitude reinstall libapr1 libaprutil1
sudo a2enmod ldap
cd /usr/lib/
sudo ln -sf libaprutil-1.so.0.2.12 libaprutil-1.so.0
sudo ln -sf libapr-1.so.0.2.12 libapr-1.so.0
sudo /etc/init.d/apache2 stop
sudo /etc/init.d/apache2 start

I hope it works for you!

By: Mark

Mark — Wed, 22 Jul 2009 09:42:35 +0000

If this does not help, check by 'ldd' whether your subversion Apache module is compiled with LDAP support enabled. If so, recompile apr-util with –with-ldap.

By: Mudassir

Mudassir — Thu, 18 Jun 2009 14:46:10 +0000

i have still following error when starting apache

/usr/sbin/apache2: symbol lookup error: /usr/sbin/apache2: undefined symbol: apr_os_uuid_get

By: Rhys Ulerich

Rhys Ulerich — Tue, 27 Jan 2009 14:07:44 +0000

I also ran into this problem, but the root cause was that I'd built the Apache Portable Runtime in /usr/local for some other development work, completely forgot about it, and apache2 was picking up libraries from /usr/local/lib before /usr/lib.

By: Jes struck

Jes struck — Thu, 11 Dec 2008 10:32:11 +0000

hey i have tried youre approach but it still not working for me

By: Luis

Luis — Wed, 26 Nov 2008 10:05:01 +0000

I had the same problem in Slackware 12.1 with default installation.

The first link I tried to re-issue was the right one:
ln -sf libaprutil-1.so.0.2.12 libaprutil-1.so.0

Apparently the link is the same as the old, but httpd now runs.

Thank you.

By: Cody Erben

Cody Erben — Fri, 21 Nov 2008 08:58:01 +0000

Based off this post, I was able to poke around and the the following resolved my issues with this on Ubuntu 8.10:

sudo aptitude reinstall libapr1 libaprutil1

Thanks for posting your original findings…it helped point me in the right direction !

By: Artem Russakovskii

Artem Russakovskii — Wed, 19 Nov 2008 23:08:49 +0000

The damn problem keeps coming back every once in a while. People, what keeps doing this!?

By: Artem Russakovskii

Artem Russakovskii — Mon, 17 Nov 2008 15:35:34 +0000

Well, it's hard to say without playing around with that particular system. I'd say double check everything, and if that doesn't work, try to work out another solution. But you already knew that. :-/

By: Carlo

Carlo — Mon, 17 Nov 2008 11:36:48 +0000

Hey, I have the same problem. After I updated to Ubuntu 8.10 apache stopped working! I tried your solution to re-link the files but with no luck! Do you have any other suggestion?