Adjust to the moving target called the C++ standard. Apparently nowadays it's not allowed to define an explicit copy constructor but not an assignment operator. Consequently, defining the explicit copy constructor in terms of the implicit/automatic assignment operator for general convenience no longer works. Add assignment operators. Caution: not tested with the IBM compiler, but there's no particular reason it shouldn't work.

SUBDIRS=source

include $(TOP)/mk/subdir.mk
include $(TOP)/mk/installdirs.mk

MYDIR=$(EXAMPLESDIR)/oldclasslib

install:
	@$(TOP)/mk/mkinstalldirs.sh "$(MYDIR)/include" "$(MYDIR)/source"
	@echo '        [CP]      include/*.h'
	@cp $(SRCDIR)/include/*.h "$(MYDIR)"/include/
	@chmod 644 "$(MYDIR)"/include/*.h
	@echo '        [CP]      source/*.cpp'
	@cp $(SRCDIR)/source/*.cpp "$(MYDIR)"/source/
	@chmod 644 "$(MYDIR)"/source/*.cpp