Check that any dependency file is newer than Makefile before concatenating

	rm -f $(TARFILE)

# This exists solely for those who still type 'make depend'

#

# We check if any depfile is newer than Makefile and decide to

# concatenate only if that is true, or if 'test' (a.k.a [ )

# doesn't have the option to figure it out (-nt).

#

# To check if test has the file age comparison operator, we

# simply try, and rely test to exit with 0 if the comparison

# was true, 1 if false, and most importantly, 2 if it doesn't

# recognise the operator.

depend:

	@( sed -e '/^# DO NOT DELETE THIS LINE.*/,$$d' < Makefile; \

	@catdepends=false; \

	if [ Makefile -nt Makefile ] 2>/dev/null || [ $$? = 1 ]; then \

	  for d in $(DEPS); do \

	    if [ $$d -nt Makefile ]; then \

	      catdepends=true; \

	      break; \

	    fi; \

	  done; \

	else \

	  catdepends=true; \

	fi; \

	if [ $$catdepends = true ]; then \

	  ( sed -e '/^# DO NOT DELETE THIS LINE.*/,$$d' < Makefile; \

	    echo '# DO NOT DELETE THIS LINE -- make depend depends on it.'; \

	    echo; \

	    for d in $(DEPS); do \

	      if [ -f $$d ]; then cat $$d; fi; \

	  done ) > Makefile.new

	@if ! cmp Makefile.new Makefile >/dev/null 2>&1; then \

	    done ) > Makefile.new; \

	  if ! cmp Makefile.new Makefile >/dev/null 2>&1; then \

	    mv -f Makefile.new Makefile; \

	  else \

	    rm -f Makefile.new; \

	  fi; \

	fi

# Install helper targets #############################################