Centos

6.2

sudo yum groupinstall "Development Tools"
sudo yum install glib2-devel fuse-devel libevent-devel libxml2-devel openssl-devel
wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
tar -xzf libevent-2.0.21-stable.tar.gz
cd libevent-2.0.21-stable
./configure && make
sudo make install
sudo echo "/usr/local/lib/" > /etc/ld.so.conf.d/riofs.conf
sudo ldconfig
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
cd ..