The QtFindWrapHelper include used in FindWrap scripts can choose to
call find_package() on one of two packages. The packages might set a
VERSION variable. We should set the same version for the FindWrap
package as well.
There are two sources where the version will be queried from. First
from the underlying ${package_name}_VERSION variable.
And if that is empty, from a property that is set by qt_find_package()
The former might be empty because find_package might be called from
a function instead of a macro, which is the case for any find_package
call in configure.cmake files that get loaded by the
qt_feature_evaluate_features function.
Thus we need the indirection via the property that qt_find_package
will set.
Change-Id: I57fd818cb9dedf5e27a6d805e3d817d8d18be36d
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
28c8f8e92a