I get the above titled error when running qmake with a cloned github project. Following is the project file.
#-------------------------------------------------
#
# Project created by QtCreator 2013-01-18T22:28:41
#
#-------------------------------------------------
QT += core gui widgets webkitwidgets sql gui-private xml
TARGET = zeal
target.path = /usr/bin
INSTALLS = target
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp \
zeallistmodel.cpp \
zealsearchmodel.cpp \
zealdocsetsregistry.cpp \
zealsearchresult.cpp \
zealnativeeventfilter.cpp \
lineedit.cpp \
zealsearchitemdelegate.cpp \
zealsearchitemstyle.cpp \
zealsettingsdialog.cpp \
zealnetworkaccessmanager.cpp \
zealsearchquery.cpp \
progressitemdelegate.cpp
HEADERS += mainwindow.h \
zeallistmodel.h \
zealsearchmodel.h \
zealdocsetsregistry.h \
zealsearchresult.h \
zealnativeeventfilter.h \
lineedit.h \
zealsearchitemdelegate.h \
zealsearchitemstyle.h \
zealsettingsdialog.h \
xcb_keysym.h \
zealnetworkaccessmanager.h \
zealsearchquery.h \
progressitemdelegate.h
FORMS += mainwindow.ui \
zealsettingsdialog.ui
QMAKE_CXXFLAGS += -std=c++11
macx:DEFINES += OSX
macx:QMAKE_CXXFLAGS += -mmacosx-version-min=10.7 -stdlib=libc+
macx:CONFIG += c++11
win32:DEFINES += WIN32 QUAZIP_BUILD
DEFINES += ZEAL_VERSION=\\\"20140110\\\"
LIBS += -lz
unix:!macx: LIBS += -lxcb -lxcb-keysyms
unix:!macx: SOURCES += xcb_keysym.cpp
unix:!macx: DEFINES += LINUX
icons.path=/usr/share/pixmaps/zeal
icons.files=icons/*
desktop.path=/usr/share/applications
desktop.files=zeal.desktop
unix:INSTALLS += icons desktop
include (widgets/widgets.pri)
include (quazip/quazip.pri)
Run qmake --version to check the Qt version you are using. You need Qt 5.0 or higher.
You might want to double check the error message and maybe close other open projects, because zeal is not a QtQuick application. It has no single occurrence of the string "quick" in the whole code (try git grep -i "quick") and no single QML file (try find . -name "*.qml"). Thus it is unlikely to throw the given error.
Had same issue on lubuntu and Qt 5.2.1 (few more modules were unknown). I removed Qt configuration files from .config folder in my home dir.
rm -r ~.config/QtProject
rm ~.config/QtProject.conf
Reconfigure project again and all works as expected