continued from the fedoraforun thread
there is mostlikely a file that needs to be overwrote
and you do not have permission to write to the folder
also why build QT4 ?
you will NEED to make a rpm out of the source to tell yum NOT to install the fedora qt rpm as a dependancy to some program
for that you will need to install "rpm-build " from the repos and / or blacklist qt from instilling with yum
it is normally very very unwise to build system files unless one has a lot of experience
there are a mess /a tone/a lot/ a bunch of fedora programs that need the VERSION of qt in the fedora repos
it is strongly advised that you use THAT rpm .