libmemcache Cannot load into server: undefined symbol: mcm_buf_len

Bug #1314679 reported by Paul Egges
This bug affects 8 people
Affects Status Importance Assigned to Milestone
libmemcache (Ubuntu)

Bug Description

This is for Ubuntu 14.04 LTS
Release: 14.04

Package: libmemcache0 1.4.0.rc2-1ubuntu1

Cannot start apache: An error message similar to the following occurs :

Cannot load into server: /usr/lib/ : undefined symbol: mcm_buf_len

We use mod_auth_memcookie with Apache2. The following mods were installed:

ls mods-enabled:

access_compat.load authz_groupfile.load cgi.load env.load mpm_prefork.load proxy_ajp.load reqtimeout.load setenvif.conf ssl.load wsgi.load
alias.conf auth_memcookie.load authz_host.load deflate.conf filter.load negotiation.conf proxy.conf server2.crt setenvif.load status.conf
alias.load authn_core.load authz_user.load deflate.load mime.conf negotiation.load proxy_http.load server2.csr shib2.load
auth_basic.load authn_file.load autoindex.conf dir.conf mime.load php5.conf proxy.load server2.key socache_shmcb.load status.load
auth_memcookie.conf authz_core.load autoindex.load dir.load mpm_prefork.conf php5.load reqtimeout.conf ssl.conf wsgi.conf

Server version: Apache/2.4.7 (Ubuntu)
Server built: Apr 3 2014 12:20:28

This fixed the problem:

go to the libmemcache directory, example: cd $HOME/libmemcache-1.4.0.rc2
wget '' -O libcache.patch
patch -p0 < libcache.patch

And then building and reinstalling libmemcache

See additional information here (it refers to Fedora, but the patch seems to work for Ubuntu also):

Revision history for this message
Paul Egges (mountainpaul) wrote :
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in libmemcache (Ubuntu):
status: New → Confirmed
Revision history for this message
Clayton Kramer (clayton-kramer) wrote :

Thanks for providing the patched file Paul.

Dave Alitz (dalitz)
description: updated
Revision history for this message
Harald Hannelius (harald-arcada) wrote :

Still bitten by this on LTS 16.04.3. This seems to be the same bug

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