Beginning Linux Programming

Speakers : Neil Matthew and Richard Stones

Makefiles

• Describe what files are needed to build an app
  

• Describe how to build the app
  

• Can avoid unnecessary compilations
  

• Documents file dependencies
  

• Supports multiple targets
  

• Good for managing libraries
  

Example makefile

 all: myapp

  CC = gcc

  CFLAGS = -g -Wall -ansi

  MYLIB = mylib.a

  myapp: main.o $(MYLIB)

  $(CC) -o $@ main.o $(MYLIB)

  $(MYLIB): $(MYLIB)(2.o) $(MYLIB)(3.o)

  

  main.o: main.c a.h

  2.o: 2.c a.h b.h

  3.o: 3.c a.h c.h

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