--- a/jdk/make/com/sun/tools/attach/Makefile	Wed Dec 28 10:51:24 2011 -0800
+++ b/jdk/make/com/sun/tools/attach/Makefile	Thu Dec 29 16:39:51 2011 -0800
@@ -28,6 +28,9 @@
 PACKAGE = com.sun.tools.attach
 LIBRARY = attach
 PRODUCT = sun
+JAVAC_MAX_WARNINGS = true
+JAVAC_WARNINGS_FATAL = true
+
 include $(BUILDDIR)/common/Defs.gmk
 
 ifeq ($(PLATFORM), solaris)