Qt6 - cmake

[SGaist]

Good, do you have any other Qt installed through e.g. macports or brew ?

Could you test on the command line to see if you have the same issue ? I am just wondering whether Qt Creator may have some leftover settings interfering.

[rootshell]

@SGaist macports no, brew is installed and cmake listed
I did brew uninstall cmake and verified it was gone

same issue with QT / QTCreator generating CMakeLists.txt
find_package(Qt5Core)

[SGaist]

Ok, which Qt 6 release did you install exactly ?

[rootshell]

@SGaist

The plot thickens...
I just switched to my linux machine and name issue
find_package(Qt5Core)

Mac -
I had removed Qt and did a fresh install.
Newest Qt 6.0

Linux -
Have Qt 5.12. and and 15.5.0
Ran the maintenance tool, updated all existing
Reran - installed Qt 6.0
Same issues on the linux box

[rootshell]

@rootshell In case anyone is following this....
Removed it on Linux and had a fail trying to install
GUessing this has some rough edges, I will try to find out more.

[Jonas Kvinge]

@rootshell said in Qt6 - cmake:

CMakeLists.txt

Can you share your CMakeLists.txt file?
Are you sure you point to the correct source directory in the cmake command?

[SGaist]

I just tested using cmake -DCMAKE_PREFIX_PATH=~/Qt/6.0.0/gcc_64/lib/cmake .. using one of Qt's example copied in a random folder and it worked properly nothing searched from Qt 5.

[Tom asso]

@SGaist - I am having a very similar issue. Trying to port Qt5 to Qt6. on ubuntu 22.04.
I had previously installed Qt5 packages with apt install - I removed all of those with apt remove. I installed Qt6.7.2 with the online installer into directory ~/Qt6. Now cmake find_package() succeeds when I set CMAKE_PREFIX_PATH to ~/Qt6/6.7.2/gcc_64/lib/cmake/:

find_package(
  Qt6
  COMPONENTS Gui Widgets Quick
  REQUIRED)

But cmake fails on the target with:

CMake Warning (dev) in src/qt-test2/CMakeLists.txt:
  AUTOGEN: No valid Qt version found for target qt-test.  AUTOMOC, AUTOUIC
  and AUTORCC disabled.  Consider adding:

    find_package(Qt5 COMPONENTS Widgets)

  to your CMakeLists.txt file.

What am I doing wrong?

[Christian Ehrlicher]

@Tom-asso Why do you hijack an old thread when you already have a topic with your issue here?

[Tom asso]

@Christian-Ehrlicher - Not intending to hijack anything - this thread is very relevant to my current issue.

[SGaist]

@Tom-asso You can also use the qt-cmake wrapper from the bin folder of your Qt installation.