Qt 6.5.3 fails to build examples on Debian 12

alik_co

@cristian-adam said in Qt 6.5.3 fails to build examples on Debian 12:

cmake --debug-find

Couldn't find /usr/share/cmake-3.25/Modules/FindQt6.cmake. In fact, this file doesn't exist at all, I scanned the whole system. Looks like installer bug. I'm guessing because it's Debian, not Ubuntu. Is there a way to get this file? I could copy it and see what happens

alik_co

@Axel-Spoerl Thanks, qmake worked.

Can I copy FindQt6.cmake file from somewhere?
Since this is a known issue, may I have a link to the tracking bug?

Axel Spoerl

@alik_co @cristian-adam
It boils down to qt_add_* not being found. I’ll report the bug tomorrow with all details.

Axel Spoerl

This ticket contains some information I have reproduced.
Could you run CMake (qt-cmake6) as @cristian-adam suggested and add --trace-expand --trace-redirect=cmake.trace.
Thereafter, please post the cmake.trace file here (between code tags for formatting) - thanks.

alik_co

@Axel-Spoerl Will do later this week. Thanks for your attention

alik_co

@Axel-Spoerl There is no file qt-cmake6 on the the system. Could you please show me exact command line to run, from which directory.

Just in case if this matters: at the time of Qt installation, I did not have installed on the system:

libxcb-cursor0
mesa-common-dev
libglu1-mesa-dev
gdb

jsulm

I don't have Qt6 at hand to check but you can simply search for the cmake executable in your Qt installation:

find ~/Qt/6.5.3/gcc_64 -name "*cmake*"

alik_co

@Axel-Spoerl Since there is no qt-cmake6 on my machine, I simply ran cmake for the example with enabled tracing.
Here is the whole thing: https://drive.google.com/file/d/16HMlyWeO6VLBiAIJLMd5FP_-PoWzRY8k/view?usp=sharing
BTW, is there a way to attach files here?

alik_co

@jsulm Of course I have cmake executable, otherwise there wouldn't be any discussion at all. The question was about qt-cmake6, which looks like not available in community edition.

jsulm

@alik_co said in Qt 6.5.3 fails to build examples on Debian 12:

The question was about qt-cmake6, which looks like not available in community edition.

That's why I suggested to search for it in your Qt installation...

alik_co

@jsulm I scanned the whole system recursively from '/'. qt-cmake6 is not there. (of course there is tons of *cmake*)

jsulm

@alik_co Well, I did not suggest to scan whole system...

Axel Spoerl

@alik_co said in Qt 6.5.3 fails to build examples on Debian 12:

I have default installation of Qt 6.5.3 on Debian 12.
Attempt to configure an example ```~/Qt/Examples/Qt-6.5.3/widgets/painting/basicdrawing`` fails:

If ~/Qt/6.5.3/gcc_64/bin/qt-cmake doesn't exist, you have used the installer to install examples, but you haven't installed Qt 6.5.3.
If you launch Qt Creator, does it show a compile kit for 6.5.3?

alik_co

@Axel-Spoerl Yes the kit is available. As I mentioned at the beginning, qmake projects work just fine, Qt is definitely installed. qt-cmake does exist, there is no qt-cmake6.
qt-cmake and then make successfully built basicdrawing. But QTCreator still fails to open cmake project, qmake works fine.

alik_co

@Axel-Spoerl Complete re-install didn't help. As before, qmake projects work fine, but any cmake fails.

jsulm

@alik_co What CMake executable is configured in QtCreator?

Axel Spoerl

Well, and since Creator gets the build toolchain from qmake:

Edit->Preferences->Kits
select "Qt Versions" tab
select your Qt version ("Desktop Qt 6.5.3 GCC 64bit")
what is the "qmake path:"?

alik_co

@Axel-Spoerl Found the problem: cmake machinery got broken by custom Default Build Directory (Build & Run -> Default Build Properties). I've been using this configuration with QMake projects with no issues, but CMake got unhappy.

Anyway, to answer your questions:

Qt Versions, -> Qt 6.5.3 GCC 64bit: /home/devwork/Qt/6.5.3/gcc_64/bin/qmake
CMake -> Tools:
   Auto-detected
    CMake 3.27.7 (Qt) (Default)       /home/devwork/Qt/Tools/CMake//bin/cmake
    System CMake at /usr/bin/cmake    /usr/bin/cmake