I have a problem of install RStudio Desktop verion on a CentOS 5 machine. Basically, RStudio Desktop needs QT4.8; however, I am not sure how to update my CentOS 5 QT4 to QT4.8. Otherwise, the Cmake can't go through.
Can't you use self-contained Zip/Tarball from http://www.rstudio.com/ide/download/desktop? You don't have to install it, just download it, unpack it and go to bin folder and run rstudio. It looks like you need to have R installed, but QT libraries are included.