Makefiles

Work In Progress

This article is work in progress! Check back soon for a full writeup.

Makefile Tier: Stupid

main:
  rm -rf main
  gcc file1.c file2.c -o $@

Makefile Tier: Novice

main: file1.c file2.c
  gcc file1.c file2.c -o $@

Makefile Tier Beginner

file1.o: file1.c
  gcc -c file1.c

file2.o: file1.c
  gcc -c file2.c

main: file1.o file2.o
  gcc file1.o file2.o -o $@

Makefile Tier Intermediate

OBJS=file1.o file2.o

%.o: %.c
  gcc -c $^ -o $@
  ${info compiled $^!!}


main: $(OBJS)
  gcc -fsanitize=address -fno-strict-aliasing -fno-stack-protector -fpie $^ -o $@

Makefile Tier Pro

CC=gcc
CFLAGS=-fsanitize=address -fno-strict-aliasing -fno-stack-protector -fpie 
OBJS=file1.o file2.o

main: $(OBJS)
  $(CC) $(CFLAGS) $^ -o $@

Makefile Tier Legend

CC=gcc
CFLAGS=-fsanitize=address -fno-strict-aliasing -fno-stack-protector -fpie 
OBJS=file1.o file2.o

depend: .depend
  gcc -MM *.c > .depend

include .depend

main: $(OBJS) depend
  $(CC) $(CFLAGS) $^ $(LDFLAGS) -o $@

Tangent: Non C Makefiles

LaTeX

%.pdf: %.tex
  pdflatex $^

clean:
  rm -rf *.log *.aux

.PHONY clean

Other

Basically anytime you want to run command(s) when some input files are NEWER than some output files.

Makefile Tier BRAIN DAMAGE

${info <stuff>} Useful for logging
${wildcard *.c} Useful for finding files
${shell <shell cmd>} Run arbitrary shell commands!
${foreach i, LIST, <cmd>} : Do cmd for each i in LIST
- Can also return values!
Phony Targets: Targets that dont produce the file of their name!
- Useful to run every time.

Brain damage begins here

See LUG Website!

Utils

touch *.c

(org-babel-result-hide-all)