sudo yum -y -q install perl
sudo yum -y -q install graphviz-dev graphviz
sudo yum -y -q install f2c
-sudo yum -y -q install pcre-devel pcre-static
sudo yum -y -q install git-core
sudo yum -y -q install ruby ruby-devel
sudo yum -y -q install libunwind libunwind-devel