trigger relink after package library build through updating the time stamp on main.cpp

        fi;

# download/build/install a package library

# update the timestamp on main.cpp to trigger a relink with "make machine"

lib-%:

	@if [ -e ../lib/$(LIBDIR)/Install.py ]; then \

	  echo "Installing lib $(@:lib-%=%)"; \

	  cd ../lib/$(LIBDIR); $(PYTHON) Install.py $(args); \

	  ( cd ../lib/$(LIBDIR); $(PYTHON) Install.py $(args) ); \

	elif [ -e ../lib/$(LIBUSERDIR)/Install.py ]; then \

	  echo "Installing lib $(@:lib-user-%=%)"; \

	  cd ../lib/$(LIBUSERDIR); $(PYTHON) Install.py $(args); \

	  ( cd ../lib/$(LIBUSERDIR); $(PYTHON) Install.py $(args) ); \

	else \

	  echo "Install script for lib $(@:lib-%=%) does not exist"; \

	fi;

	fi; touch main.cpp

# status = list src files that differ from package files

# update = replace src files with newer package files