Following the fox for JDK-8171330 we get the following compilation error on OL 7 which breaks the production builds:

rt/modules/javafx.graphics/src/main/native-glass/gtk/glass_general.cpp:826:42: error: unused parameter 'window' [-Werror=unused-parameter]
 glass_window_apply_shape_mask(GdkWindow *window,
                                          ^
rt/modules/javafx.graphics/src/main/native-glass/gtk/glass_general.cpp:827:11: error: unused parameter 'data' [-Werror=unused-parameter]
     void* data, uint width, uint height)
           ^
rt/modules/javafx.graphics/src/main/native-glass/gtk/glass_general.cpp:827:22: error: unused parameter 'width' [-Werror=unused-parameter]
     void* data, uint width, uint height)
                      ^
rt/modules/javafx.graphics/src/main/native-glass/gtk/glass_general.cpp:827:34: error: unused parameter 'height' [-Werror=unused-parameter]
     void* data, uint width, uint height)
                                  ^