This seems to have succeeded:
$cd /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/aqua/qt4-mac $sudo cp Portfile Portfile.old $sudo nano Portfile ^w Search for: configure.compiler Just after this text: # The build process uses -fconstant-cfstrings. # configure.compiler should therefore not be one of the MacPorts compilers. add: configure.compiler llvm-gcc-4.2 ^o ^x $sudo port -d -v install qt4-mac