A simple Makefile for our program
For the case of our multi-file program,
calcmarks,
we can develop a very verbose Makefile
which fully describes the actions required to compile and link our
project files.
# A Makefile to build our 'calcmarks' project
calcmarks : calcmarks.o globals.o readmarks.o correlation.o
—— tab —→cc -std=c11 -Wall -Werror -o calcmarks \
calcmarks.o globals.o readmarks.o correlation.o -lm
calcmarks.o : calcmarks.c calcmarks.h
—— tab —→cc -std=c11 -Wall -Werror -c calcmarks.c
globals.o : globals.c calcmarks.h
—— tab —→cc -std=c11 -Wall -Werror -c globals.c
readmarks.o : readmarks.c calcmarks.h
—— tab —→cc -std=c11 -Wall -Werror -c readmarks.c
correlation.o : correlation.c calcmarks.h
—— tab —→cc -std=c11 -Wall -Werror -c correlation.c
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download this Makefile.
Of note:
- each target,
at the beginning of lines,
is followed by the
dependencies
(typically other files) on which it depends,
- each target may also have one or more
actions
that are performed/executed if the target is out-of-date with respect
to its dependencies,
- actions must commence with the
tab character, and
- each action
is passed verbatim to a shell for execution -
just as if you would type it by hand.
Very long lines may be split using the backslash character.
CITS2002 Systems Programming, Lecture 17, p12, 26th September 2023.
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CITS2002