Qt6 compatibility is broken in some cases when building with conan. This is due to the find_package version check against 5.5 rejecting the Qt6 version (e.g. 6.3.1).
This patch removed the version check.
Qt6 requires C++17 for building. ADS however only requires C++14 so far. Now when building using Conon for example the packages are built independently and ADS is built using the C++-14 flag which in turn causes the included Qt6 headers to fail the compile process. This patch bumps the required C++ standard to C++17 for builds targeting Qt6 only.
* Removes dependency on QtX11Extras and implements placeholder solution with QtGUI private API
* Fixes CMakeLists.txt to work with Qt5 and Qt6
* Removes all other uses of X11extras
* Renames and moves x11 methods into ads::internal
* Fixes typo
* Adds gui-private to src.pro
macOS is identified as UNIX by CMake, but Qt doesn't actually use X11
there (and X11 support is not available by default anyway). Change the
condition that includes X11Extras to if (UNIX AND NOT APPLE) instead of
just if (UNIX) to mitigate that. This makes the build on macOS work
with CMake.
Co-authored-by: Christian Seiler <c.seiler@luxflux.de>
Pass header files to add_library() so they appear in the 'qtadvanceddocking' Visual Studio project.
Add path to header files in PUBLIC include build interface so the 'qtadvanceddocking' target can be built in-source in a CMake project.
