Qt5 and CMake: cannot find Quick, QuickControls modules - qt

Question

I have the following set-up:
$ qmake --version
QMake version 3.1
Using Qt version 5.9.5
I am using CMake with the following relevant instructions (to give you a context):
set(CMAKE_PREFIX_PATH /usr/lib/qt5/bin/)
if(CMAKE_VERSION VERSION_LESS "3.7.0")
set(CMAKE_INCLUDE_CURRENT_DIR ON)
endif()
set(CMAKE_MODULE_PATH /usr/lib/qt5)
# #see: https://stackoverflow.com/questions/51994603/cmake-qt5-undefined-reference-to-qprinterqprinterqprinterprintermode
SET(QT5_MODULES Core Widgets PrintSupport)
find_package(Qt5 COMPONENTS ${QT5_MODULES} REQUIRED)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(HW_GUI_DIR ${CMAKE_CURRENT_SOURCE_DIR}/gui)
# include_directories(${HW_HEADER_DIR})
set(CMAKE_AUTOUIC ON)
...
The core part is
SET(QT5_MODULES Core Widgets PrintSupport)
find_package(Qt5 COMPONENTS ${QT5_MODULES} REQUIRED)
Now, when I add Quick or QuickControls2 into the QT5_MODULES, CMake cannot find those,
and I see this error on the cmake-config step:
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake:28
(find_package): Could not find a package configuration file provided
by "Qt5Quick" with any of the following names:
Qt5QuickConfig.cmake
qt5quick-config.cmake
Now, not to confuse you, /usr/lib/x86_64-linux-gnu/qt5/bin seems to be a symlink
to /usr/lib/qt5, which I've checked like this:
$ ls -l /usr/lib/x86_64-linux-gnu/qt5/bin/
total 0
lrwxrwxrwx 1 root root 33 Oct 30 18:00 fixqt4headers.pl -> ../../../qt5/bin/fixqt4headers.pl
lrwxrwxrwx 1 root root 20 Oct 30 18:00 moc -> ../../../qt5/bin/moc
lrwxrwxrwx 1 root root 29 Oct 30 18:00 qdbuscpp2xml -> ../../../qt5/bin/qdbuscpp2xml
lrwxrwxrwx 1 root root 29 Oct 30 18:00 qdbusxml2cpp -> ../../../qt5/bin/qdbusxml2cpp
How to fix this error and find the Quick module? What is special about it -- I am able to load the other modules allright.

Answer 1

First, please check if you have installed the correct packages providing those modules. Since you seem to be using some Debian derivative, these are the package names that you should install: qtdeclarative5-dev and qtquickcontrols2-5-dev. See:
https://packages.debian.org/sid/amd64/qtdeclarative5-dev/filelist
https://packages.debian.org/sid/amd64/qtquickcontrols2-5-dev/filelist