diff -uNr root.ORIG/cint/cint/Module.mk root/cint/cint/Module.mk
--- root.ORIG/cint/cint/Module.mk	2016-04-05 17:24:40.000000000 +0900
+++ root/cint/cint/Module.mk	2016-12-27 19:04:28.000000000 +0900
@@ -165,6 +165,10 @@
 CINTS2       := $(filter-out $(MODDIRSD)/libstrm.%,$(CINTS2))
 CINTS2       += $(MODDIRSD)/gcc4strm.cxx
 endif
+ifeq ($(GCC_MAJOR),6)
+CINTS2       := $(filter-out $(MODDIRSD)/libstrm.%,$(CINTS2))
+CINTS2       += $(MODDIRSD)/gcc4strm.cxx
+endif
 ifneq ($(CLANG_MAJOR),)
 CINTS2       := $(filter-out $(MODDIRSD)/libstrm.%,$(CINTS2))
 CINTS2       += $(MODDIRSD)/gcc4strm.cxx
@@ -207,6 +211,9 @@
 ifneq ($(CLANG_MAJOR),)
 IOSENUMA     := $(CINTDIRIOSEN)/iosenum.$(ARCH)3
 else
+ifeq ($(GCC_MAJOR),6)
+IOSENUMA     := $(CINTDIRIOSEN)/iosenum.$(ARCH)3
+else
 ifeq ($(GCC_MAJOR),5)
 IOSENUMA     := $(CINTDIRIOSEN)/iosenum.$(ARCH)3
 else
@@ -221,6 +228,7 @@
 endif
 endif
 endif
+endif
 
 # used in the main Makefile
 ALLHDRS     += $(CINTHT) $(CINTINCLUDES)
@@ -355,6 +363,9 @@
 ifeq ($(GCC_MAJOR),5)
 $(call stripsrc,$(CINTDIRSD)/gcc4strm.o): CINTCXXFLAGS += -Wno-strict-aliasing
 endif
+ifeq ($(GCC_MAJOR),6)
+$(call stripsrc,$(CINTDIRSD)/gcc4strm.o): CINTCXXFLAGS += -Wno-strict-aliasing
+endif
 
 
 $(MAKECINTO) $(CINTO): $(CINTCONF) $(ORDER_) $(CINTINCLUDES)
@@ -389,8 +400,12 @@
 ##### configcint.h
 ifeq ($(CPPPREP),)
 # cannot use "CPPPREP?=", as someone might set "CPPPREP="
+ifeq ($(GCC_MAJOR),6)
+  CPPPREP = $(CXX) -std=c++98 -E -C
+else
   CPPPREP = $(CXX) -E -C
 endif
+endif
 
 include $(CINTCONFMK)
 ##### configcint.h - END