linux install mono

$ yum install bison gettext glib2 freetype fontconfig libpng libpng-devel libX11 libX11-devel glib2-devel libgdi* libexif glibc-devel urw-fonts java unzip gcc gcc-c++ automake autoconf libtool make bzip2 wget
      
$ cd /usr/local/src
      
$ wget http://download.mono-project.com/sources/mono/mono-4.8.0.495.tar.bz2
      
$ tar jxf mono-4.8.0.495.tar.bz2
      
$ cd mono-mono-4.8.0
      
 $ ./configure --prefix=/opt/mono
      
 $ make && make install
      
 $ export PATH=$PATH:/opt/mono/bin
 $ export PKG_CONFIG_PATH=/opt/mono/lib/pkgconfig
 $ # make sure to add the previous two lines to your ~/.bash_profile