CXXFLAGSNO = $(NOOPT) -W -Wall -fPIC -pipe
else
ifeq ($(CCMAJORV),3)
-CXXFLAGS = $(OPT) -W -Wall -Woverloaded-virtual -fPIC -pipe -fmessage-length=0 -Wno-long-long -pedantic-errors -ansi -Dlinux
+CXXFLAGS = $(OPT) -W -Wall -Werror -Woverloaded-virtual -fPIC -pipe -fmessage-length=0 -Wno-long-long -pedantic-errors -ansi -Dlinux
CXXFLAGSNO = $(NOOPT) -W -Wall -Werror -fPIC -pipe -fmessage-length=0 -Wno-long-long -pedantic-errors -ansi
else
CXXFLAGS = $(OPT) -W -Wall -Woverloaded-virtual -fPIC -pipe -fmessage-length=0 -Wno-long-long -ansi -Dlinux