Change 8214578  introduced a dependency to 10.13. (NSTextInputSourceIdentifier  ).

The doc of  NSTextInputSourceIdentifier  :   https://developer.apple.com/documentation/appkit/nstextinputsourceidentifier

mentions  macOS 10.13+  .

 Build errors are :
 ----------------------------

> /jdk/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.h:41:5: error: unknown type name 'NSTextInputSourceIdentifier'
>      NSTextInputSourceIdentifier kbdLayout;
>      ^
> /jdk/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m:93:23: error: assignment to readonly property
>          self.cglLayer = windowLayer;
>          ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
> /jdk/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m:110:19: error: assignment to readonly property
>      self.cglLayer = nil;
>      ~~~~~~~~~~~~~ ^ ~~~
> 3 errors generated.