The most recent updated will always be available from SAVANNAH REPO.
The stable version will be availavle from CTAN REPO
GTK+-3
libsoup
intltool
yelp-tools
gnu-flex and bison
yum install libsoup-devel.x86_64 intltool\ yelp-tools intltool gtk3-devel \ flex flex-devel bison
Instruction for Arch and Ubuntu will be updated soon.