$ cd ~/dev/qt5-dbg
$ ../qt5/configure -developer-build -nomake examples -nomake tests -opensource -confirm-license -no-icu -no-tslib -no-pulseaudio
....
Creating qmake...
...........................................................................................Done.
Info: creating super cache file /home/rutledge/dev/qt5-dbg/.qmake.super
/home/rutledge/dev/qt5/qtbase/mkspecs/features/resolve_config.prf:25: 'addExclusiveBuilds' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/resolve_config.prf:37: 'addExclusiveBuilds' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
/home/rutledge/dev/qt5/qtbase/mkspecs/features/qt_docs_targets.prf:31: 'prepareRecursiveTarget' is not a recognized test function.
Unknown generator specified: DUMMY