--- old/make/linux/makefiles/gcc.make	2016-02-19 00:07:01.106732762 +0100
+++ new/make/linux/makefiles/gcc.make	2016-02-19 00:07:00.994732756 +0100
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -265,6 +265,11 @@
   # GCC >= 4.3
   # Gcc 4.1.2 does not support this flag, nor does it have problems compiling the file.
   OPT_CFLAGS/vmStructs.o += -fno-var-tracking-assignments
+  # The debug flag is added to OPT_CFLAGS, but lost in case of per-file overrides
+  # of OPT_CFLAGS. Restore it here.
+  ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
+    OPT_CFLAGS/vmStructs.o += -g
+  endif
 endif
 
 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
@@ -277,6 +282,11 @@
 ifeq ($(USE_CLANG), true)
   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)
     OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)
+    # The debug flag is added to OPT_CFLAGS, but lost in case of per-file overrides
+    # of OPT_CFLAGS. Restore it here.
+    ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
+      OPT_CFLAGS/loopTransform.o += -g
+    endif
   endif
 else
   # Do not allow GCC 4.1.1