[build] Workaround automoc issue on some cmake versions

platform/qt/qt.cmake

@@ -1,11 +1,6 @@
 # This file is to be reused by target platforms that don't
 # support `mason` (i.e. Yocto). Do not add any `mason` macro.
 
-if (CMAKE_VERSION VERSION_EQUAL "3.6.0")
-    # CMake 3.6.0 is buggy: https://gitlab.kitware.com/cmake/cmake/issues/16209
-    message(FATAL_ERROR "CMake 3.6.0 is not supported due to a bug in automoc name generation. Please upgrade or downgrade.")
-endif()
-
 option(WITH_QT_DECODERS "Use builtin Qt image decoders" OFF)
 option(WITH_QT_4        "Use Qt4 instead of Qt5"        OFF)
 
@@ -55,9 +50,6 @@ set(MBGL_QT_FILES
     PRIVATE platform/qt/src/timer.cpp
     PRIVATE platform/qt/src/timer_impl.hpp
 
-    # Qt resources
-    PRIVATE platform/qt/qmapbox.qrc
-
     # Public headers
     PRIVATE platform/qt/include/qmapbox.hpp
     PRIVATE platform/qt/include/qmapboxgl.hpp

platform/qt/qt4.cmake

@@ -1,5 +1,7 @@
 find_package(Qt4 REQUIRED)
 
+QT4_ADD_RESOURCES(MBGL_QT_FILES platform/qt/qmapbox.qrc)
+
 set(MBGL_QT_LIBRARIES
     PRIVATE Qt4::QtCore
     PRIVATE Qt4::QtGui

platform/qt/qt5.cmake

@@ -6,6 +6,8 @@ find_package(Qt5OpenGL   REQUIRED)
 find_package(Qt5Quick    REQUIRED)
 find_package(Qt5Widgets  REQUIRED)
 
+QT5_ADD_RESOURCES(MBGL_QT_FILES platform/qt/qmapbox.qrc)
+
 set(MBGL_QT_LIBRARIES
     PRIVATE Qt5::Core
     PRIVATE Qt5::Gui