ENH: Improve Qt include directory detection in generator CMake

Enhanced logic to handle potential subdirectories like "QtCore" and added fallback for frameworks without "QtCore" suffixed, improving compatibility with various Qt installations.

Author: hjmjohnson

generator/CMakeLists.txt

@@ -65,10 +65,18 @@ endforeach()
 
 get_target_property(_qtcore_include_dirs Qt${QT_VERSION_MAJOR}::Core INTERFACE_INCLUDE_DIRECTORIES)
 foreach(_qtcore_include_dir IN LISTS _qtcore_include_dirs)
+    # Some versions of Qt may have subdirectories like "QtCore" for header files
     if (IS_DIRECTORY "${_qtcore_include_dir}/QtCore")
         set(_qt_include_prefix "${_qtcore_include_dir}")
         break()
+    else()
+        # If frameworks, then no QtCore should be suffixed
+        if (IS_DIRECTORY "${_qtcore_include_dir}")
+            set(_qt_include_prefix "${_qtcore_include_dir}")
+            break()
+        endif()
     endif()
+
 endforeach()
 
 add_custom_command(OUTPUT ${PYTHONQT_WRAPPER_SOURCES}