Building the GUI

[Lyndon Hill]

If I try to use qmake, local install:

~/Source/Qt/6.6.2/gcc_64/bin/qmake
Project ERROR: Qt 6 is not supported via qmake - please use CMake instead

OK, I will use cmake:

mkdir build; cd build
cmake -DBUILD_GUI=ON -DHAVE_RULES=ON ..
...
CMake Warning at cmake/findDependencies.cmake:27 (message):
  Building with Qt5 is deprecated (it went EOL in May 2023) and will be
  removed in a future release - please use Qt6 instead
(fail)

I'm not experienced with cmake; - I need to tell cmake where to find my Qt6 installation because it doesn't seem happen with my standard Qt 5 installation?

[lamoda]

-DUSE_QT6=ON

look inside the CI for windows at .github/ rep

[Oliver Stöneberg]

Although we lack documentation for all the individual CMake options they are all listed in the CMake output:

-- BUILD_GUI =             ON
-- REGISTER_GUI_TESTS =    ON
-- WITH_QCHART =           ON
-- USE_QT6 =               OFF
-- QT_VERSION =            5.15.10

[Lyndon Hill]

Thank you lamoda and Oliver Stöneberg.

I didn't see the cmake output listing all the options as the configuration halted before that part.
My cmake experience was not good enough to know that I should have run a basic config in order to see the other rules; the docs listed BUILD_GUI so I thought that was enough.

My build was successful after adding -DCMAKE_PREFIX_PATH="/home/user/Source/Qt/6.6.2/gcc_64/lib/cmake/Qt6"