On the installation page in the wiki, In the section Requirement list for Qt4 version(Fedora 14) (http://avidemux.org/admWiki/doku.php?id=build:install_2.6#requirement_list_for_qt4_version_fedora_14) there's the line:
yum install libsql3x-devel
Is that meant to be:
yum install libsqlite3x-devel
Or am I just being completely retarded?
I think you're correct. Also, in Fedora rawhide at the moment (devel for Fedora 21) there are no qt4{,-devel} packages. The trick is to drop the 4, like so:
# yum install qt{,-devel}
EDIT: I reinstalled a minimal Fedora rawhide and this installs all requirements:
# yum install gcc{,-c++} cmake pkgconfig fakeroot yasm libpng zlib{,-devel} patch rpm-build libsqlite3x-devel qt{,-devel}