How to build on macOS using Qt6?

[magnusja]

-- Found PkgConfig: /usr/local/bin/pkg-config (found version "0.29.2")
-- Checking for one of the modules 'cppunit>=1.13.0'
CMake Warning at /Users/magnus/Downloads/tageditor-3.7.4/c++utilities/cmake/modules/TestTarget.cmake:49 (message):
  Unable to add test target because cppunit could not be located.
Call Stack (most recent call first):
  /Users/magnus/Downloads/tageditor-3.7.4/c++utilities/CMakeLists.txt:200 (include)

-- Using template for doxygen from own (c++utilities) source directory.
CMake Warning at /Users/magnus/Downloads/tageditor-3.7.4/c++utilities/cmake/modules/Doxygen.cmake:32 (message):
  Doxygen not found, unable to add target for generating API documentation
  for c++utilities
Call Stack (most recent call first):
  /Users/magnus/Downloads/tageditor-3.7.4/c++utilities/CMakeLists.txt:201 (include)

-- Using template for config.h from own (c++utilities) source directory.
-- D-Bus notifications disabled
-- Configuring project qtutilities
-- Using default CXX11 ABI  of libstdc++ (not forcing old CX11 ABI).
-- For the check target to work, it is required to call enable_testing() on the source directory root.
-- Building with Qt Widgets GUI.
-- Building WITHOUT Qt Quick GUI.
CMake Error at /Users/magnus/Downloads/tageditor-3.7.4/qtutilities/cmake/modules/QtLinkage.cmake:67 (find_package):
  By not providing "FindQt5Gui.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5Gui", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5Gui" (requested
  version 5.6) with any of the following names:

    Qt5GuiConfig.cmake
    qt5gui-config.cmake

  Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set
  "Qt5Gui_DIR" to a directory containing one of the above files.  If "Qt5Gui"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  /Users/magnus/Downloads/tageditor-3.7.4/qtutilities/cmake/modules/QtConfig.cmake:80 (use_qt_module)
  /Users/magnus/Downloads/tageditor-3.7.4/qtutilities/CMakeLists.txt:193 (include)

-- Configuring incomplete, errors occurred!
See also "/Users/magnus/Downloads/tageditor-3.7.4/bin/CMakeFiles/CMakeOutput.log".
See also "/Users/magnus/Downloads/tageditor-3.7.4/bin/CMakeFiles/CMakeError.log".

Warning: Already linked: /usr/local/Cellar/qt/6.3.1_1
To relink, run:
  brew unlink qt && brew link qt

[Martchus]

It seems like it would still look for Qt 5 which is currently the default. Maybe you just missed specifying the Qt version? See https://github.com/Martchus/tageditor#building-with-qt-gui for documentation about this. In general it would be useful if you'd share your CMake invocation. Note that I cannot help much with any macOS specific issues.

[Martchus]

Considering https://github.com/Martchus/tageditor/issues/87#issuecomment-1211993492 I suppose this issue can be closed.