# This is a makefile that lets you be sure you have printouts of the
# latest versions of certain files.

# Replace 'xyz' with the name of your printer
LPR = lpr -Pxyz

# Replace these filenames with names of files you want to print
FILES = preface chap1 chap2 chap3 chap4 chap5 appendix

# The lines 'pr ...' and 'touch ...' MUST start with a TAB character.
print: $(FILES)
	pr $? | $(LPR)
	touch print

# Print all the files, regardless of when they were modified
printall:
	pr $(FILES) | $(LPR)