AsteroidCMakeSettings.cmake: Fix default INSTALL_QML_IMPORT_DIR

Defaulting to e.g. /usr/lib/qml is wrong on Arch/Void/Alpine/Chimera
(and likely elsewhere) and everyone had to configure with
-DINSTALL_QML_IMPORT_DIR=/usr/lib/qt*/qml which is now avoided.

To be seen if this causes issues anywhere, e.g. for local test runs.

Author: JamiKettunen

CMakeLists.txt

@@ -34,15 +34,6 @@ if (WITH_CMAKE_MODULES)
 # Install CMake modules
     file(GLOB installAsteroidModuleFiles LIST_DIRECTORIES FALSE ${CMAKE_SOURCE_DIR}/cmake/*[^~])
     install(FILES ${installAsteroidModuleFiles} DESTINATION ${ASTEROID_MODULES_INSTALL_DIR})
-else()
-    get_target_property(REAL_QMAKE_EXECUTABLE Qt::qmake IMPORTED_LOCATION)
-
-    if (NOT QT_INSTALL_QML)
-        execute_process(COMMAND "${REAL_QMAKE_EXECUTABLE}" -query QT_INSTALL_QML
-                        OUTPUT_VARIABLE QT_INSTALL_QML
-                        ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
-    endif()
-    set(INSTALL_QML_IMPORT_DIR ${QT_INSTALL_QML})
 endif()
 
 add_subdirectory(src)

cmake/AsteroidCMakeSettings.cmake

@@ -31,7 +31,7 @@ if (NOT ASTEROID_SKIP_BUILD_SETTINGS)
 	# Since CMake 3.0
 	set(CMAKE_AUTORCC ON)
 
-	set(INSTALL_QML_IMPORT_DIR "${CMAKE_INSTALL_FULL_LIBDIR}/qml" 
+	set(INSTALL_QML_IMPORT_DIR "${CMAKE_INSTALL_FULL_LIBDIR}/qt${QT_VERSION_MAJOR}/qml"
 		CACHE PATH "Custom QML import installation directory")
 
 	set(QT_MIN_VERSION "5.12.0")