--- old/make/lib/Awt2dLibraries.gmk	2018-08-30 13:09:25.601373222 +0100
+++ new/make/lib/Awt2dLibraries.gmk	2018-08-30 13:09:25.365372078 +0100
@@ -55,6 +55,7 @@
     OPTIMIZATION := HIGHEST, \
     CFLAGS := $(CFLAGS_JDKLIB) \
         $(BUILD_LIBMLIB_CFLAGS), \
+    DISABLED_WARNINGS_gcc := shift-negative-value, \
     LDFLAGS := $(LDFLAGS_JDKLIB) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LIBS := $(JDKLIB_LIBS), \