Makefile簡易チュートリアルの作成(インスタンス)

一、書類の準備
main.c

#include 
#include "a.h"

extern void function_two();
extern void function_three();

int main()
{
    function_two();
    function_three();
    exit (EXIT_SUCCESS);
}

2.c

/* 2.c */
#include "a.h"
#include "b.h"

void function_two() {
}

3.c

/* 3.c */
#include "b.h"
#include "c.h"

void function_three() {
}

空のヘッダファイルa.h,b.h,c.h
二、各種のコンパイル状況
MakeFileコンパイルファイルMakeFile:

all: myapp

# Which compiler
CC = gcc

# Where to install
INSTDIR = /usr/local/bin

# Where are include files kept
INCLUDE = .

# Options for development
CFLAGS = -g -Wall -ansi

# Options for release
# CFLAGS = -O -Wall -ansi


myapp: main.o 2.o 3.o
	$(CC) -o myapp main.o 2.o 3.o

main.o: main.c a.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c main.c

2.o: 2.c a.h b.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c 2.c

3.o: 3.c b.h c.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c 3.c


clean:
	-rm main.o 2.o 3.o

install: myapp
	@if [ -d $(INSTDIR) ]; \
	then \
		cp myapp $(INSTDIR);\
		chmod a+x $(INSTDIR)/myapp;\
		chmod og-w $(INSTDIR)/myapp;\
		echo "Installed in $(INSTDIR)";\
	else \
		echo "Sorry, $(INSTDIR) does not exist";\
	fi

 2.cと3.cまずコンパイルしてmylibを生成する.a,main.cコンパイル生成myappのMakeFile:

all: myapp

# Which compiler
CC = gcc

# Where to install
INSTDIR = /usr/local/bin

# Where are include files kept
INCLUDE = .

# Options for development
CFLAGS = -g -Wall -ansi

# Options for release
# CFLAGS = -O -Wall -ansi

# Local Libraries
MYLIB = mylib.a

myapp: main.o $(MYLIB)
	$(CC) -o myapp 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 b.h c.h

clean:
	-rm main.o 2.o 3.o $(MYLIB)

install: myapp
	@if [ -d $(INSTDIR) ]; \
	then \
		cp myapp $(INSTDIR);\
		chmod a+x $(INSTDIR)/myapp;\
		chmod og-w $(INSTDIR)/myapp;\
		echo "Installed in $(INSTDIR)";\
	else \
		echo "Sorry, $(INSTDIR) does not exist";\
	fi