Problem

Facepunch Studio have released an update for Garrys Mod server that may cause the following error.

Failed to open dedicated_srv.so (/lib/libm.so.6: version `GLIBC_2.15' not found (required by bin/dedicated_srv.so))

or

Failed to open dedicated_srv.so (/usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by bin/dedicated_srv.so))

Facepunch have needed to update Garry’s Mod to use GLIBC_2.15.  because of this you will have the issue if GLIBC is older than GLIBC_2.15.

This effects the following distros:

• CentOS 6
• Debian 7
• Ubuntu 12.10 or lower

To check the installed version of Glibc use the command

ldd --version

Details about the update can be found here.

http://www.garrysmod.com/2014/07/11/14-07-11/

Solution

To fix the issue you simply need the required files Garrys Mod server directory.

cd /home/gmodserver

wget https://github.com/GameServerManagers/LinuxGSM/raw/master/lgsm/lib/ubuntu12.04/i386/libstdc++.so.6

cd bin

wget https://github.com/GameServerManagers/LinuxGSM/raw/master/lgsm/lib/ubuntu12.04/i386/libc.so.6

wget https://github.com/GameServerManagers/LinuxGSM/raw/master/lgsm/lib/ubuntu12.04/i386/libm.so.6

wget https://github.com/GameServerManagers/LinuxGSM/raw/master/lgsm/lib/ubuntu12.04/i386/libpthread.so.0

Alternatively you can use Linux Game Server Managers gmodserver game server script.