How to Install Liferea

GNU/Linux Distributions
Debian, Ubuntu There are official packages which can be installed with e.g. Synaptic or by running 
sudo aptitude install liferea
You can also find unofficial packages built by Peter van der Does on getdeb.net.
Red Hat, Fedora There are Fedora Core 3 and 4 packages in the Extras repository. To install the package execute: 
yum install liferea
Dag Wieers also provides Liferea packages for Fedora Core which can be found at http://dag.wieers.com/packages/liferea/.
SUSE Since SuSE 10.1 there are official Liferea packages in SuSE. Please use the yast2 package manager to install them.
Up-to-date SuSE and OpenSuSE packages can also be found here.
Gentoo There is a package in the official portage repository that can be installed with 
emerge liferea
Mandriva There is an official Mandriva package maintained by Tibor Pittich and Goectz Waschk. To install it execute 
urpmi liferea
Other Unix Derivates
FreeBSD There are always up-to-date Liferea packages (built by Hye-Shik Chang) at http://www.freshports.org/net/liferea/.
Mac OS, Darwin If you look for up-to-date packages you should check at darwinports.org.
Solaris There are Solaris packages at blastwave.org. These packages were built by Jeremy Teo.
Cygwin There is a Cygwin port from Yaakov Selkowitz.
Mobile Platforms
Maemo There is a Liferea port named Frothing for the GNOME Hildon desktop environment created by Ian Lawrence. This port can be used with mobile devices that do use the maemo platform (e.g. Nokia N770).
Compiling from Source
If you want you can compile Liferea yourself download the source tarball from the SourceForge project page and extract it with: 
tar -zxvf liferea-<version>.tar.gz
After unpacking browse into the created directory and run the standard autotools commands: 
$ ./configure
$ make
# make install