CMake: Support deferred finalization for qt6_add_executable()

Some parts of qt6_add_executable() need to take into account certain
target properties, but the target is created within the function.
The caller doesn't get the opportunity to modify those properties
before they are used. This change provides a way to defer those
property-using steps until either the project explicitly calls a
function to finalize the target or the end of the current directory
scope is reached.

Automatic deferral to end of scope is only supported for CMake 3.19+.
With CMake 3.18 or earlier, deferring the finalization step has to be
explicitly requested with the new MANUAL_FINALIZATION keyword. The
caller is then responsible for also calling qt6_finalize_executable()
later. When the keyword is given, automatic finalization is disabled
even when using CMake 3.19+.

Note that while this could be implemented without CMake 3.19 features,
other work relating to qt6_import_qml_plugins() will require it so we
may as well use this method now.

Fixes: QTBUG-88840
Task-number: QTBUG-86669
Pick-to: 6.0
Change-Id: Ic3854672ba18cff5af2ffd7f63596aa3ac492f33
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

0 files changed, 0 insertions, 0 deletions