This guide is based (but not only) on this article  found at www.linux-gamers.net.
Install the dependencies
For Mumble/Murmur 1.1.0 and greater (including SVN), Qt 4.3 is required. For the 1.0.0 release, Qt 4.2 is sufficient.
If Qt4 is missing the sqlite use flags, then re-install Qt4 with sqlite features:
echo x11-libs/qt dbus sqlite sqlite3 >> /etc/portage/package.use emerge -av ">=x11-libs/qt-4.3"
Get the other dependencies together:
emerge -av --oneshot ">=media-libs/speex-1.2_beta3_p2" media-libs/alsa-lib dev-libs/boost x11-libs/libXevie app-accessibility/speech-dispatcher
Now stop being root and get and compile the mumble tarball as written in the section "Installing from source".
For Debian / Ubuntu
apt-get install qt4-dev-tools libqt4-dev libspeex1 libspeex-dev libboost-dev libasound2-dev libxevie-dev libxevie1 libssl-dev g++ libspeechd-dev
It's recommended to remove the package qt3-dev-tools if installed.
If you want to use versions of Mumble greater greater than 1.0, you'll need to use Debian lenny or Ubuntu Gutsy, as they are the only versions supporting Qt 4.3.
Installing from source
The most generic approach to install mumble under any linux is to install from source. Either get the current mumble source over svn or get the latest tarball release from sourceforge.net.
svn co https://mumble.svn.sourceforge.net/svnroot/mumble/trunk mumble cd mumble/
Download the latest tarball release from sf.net http://sourceforge.net/project/showfiles.php?group_id=147372 and extract it:
tar xzfv mumble-x.x.x.tar.gz # (whereas the X are the version numbers of mumble) cd mumble-x.x.x
Be sure to have everything installed and in place for your linux distribution (see the sections above)
Compile Mumble and Murmur (Mumble server)
qmake main.pro make
Alternatively, if you are using Debian:
qmake-qt4 main.pro make
Push to talk
For using push to talk, edit /etc/X11/xorg.conf:
Section "Extensions" Option "XEVIE" "Enable" EndSection
Restart the Xserver.
Note: If you use Mumble 1.1.0 or newer, you don't need to enable Xevie, if you run mumble as an user with read access to /dev/input
Text to Speech
For text-to-speech voices you will need to install festival and at least a voice. Most distros ship packages for that in their repositories.
cd release ./mumble
- see Running Murmur