@echo 'make package-update (pu) replace src files with updated package files'

	@echo 'make package-overwrite   replace package files with src files'

	@echo 'make package-diff (pd)   diff src files against package files'

	@echo 'make package-purge       purge obsolete copies of package sources'

	@echo 'make purge               purge obsolete copies of source files'

	@echo ''

	@echo 'make machine             build LAMMPS for machine'

	@echo 'make mode=lib machine    build LAMMPS as static lib for machine'

	@echo ''

	@for p in $(PACKUSERUC); do $(SHELL) Package.sh $$p diff; done

package-purge: Purge.list

purge: Purge.list

	@echo 'Purging obsolete and auto-generated source files'

	@for f in `grep -v '#' Purge.list` ;		\

	    do test -f $$f && rm $$f && echo $$f || : ;		\