Install mono on centOS 6.x

install_mono.sh

$ 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-3.2.8.tar.bz2

$ tar jxf mono-3.2.8.tar.bz2

$ cd mono-3.2.8

$ ./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

I was able to to install mono 4.9 and xsp 4.2. on CentOS release 6.8 (Final) based on your instructions, thanks!

I also got the error I got an error about LIBGDIPLUS not found because for some reason this would not install. I installed it from

http://download.mono-project.com/sources/libgdiplus/

using the commands below and it ran successfully.

cd /usr/local/src
wget http://download.mono-project.com/sources/libgdiplus/libgdiplus-4.2.tar.gz
tar zxvf libgdiplus-4.2.tar.gz
cd libgdiplus-4.2
./configure --prefix=/opt/mono
make && make install

Hope this helps someone else and thanks again.

I was able to install mono 4.4.0.40 on centOS 6.0

I was able to install mono mono-4.8.1.0 like a charm. Thank you!

❗ Edit

I just found out that mono can be installed on CentOS 6 without building it ourselves.
https://www.mono-project.com/download/stable/#download-lin-centos

# Add repo
rpm --import "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
su -c 'curl https://download.mono-project.com/repo/centos6-stable.repo | tee /etc/yum.repos.d/mono-centos6-stable.repo'

# Install mono
yum install mono-complete