9. (20 points) Read the following C source file foo.c. Write a Makefile to compi

Question

9. (20 points) Read the following C source file foo.c. Write a Makefile to compile, link and execute the code. You can assume you have source files: foo.c, fool.c, fool.h, foo2.c, foo2.h Your Makefile must be able to do the following tasks when typing the command make. 1) Always execute the executable program foo if no target is specified. 2) Build necessary obj files for the program foo. 3) If a source file is modified, the corresponding obj files int main(int arge, char* argv)I and/or the executable program will be recompiled and linked. 4) Be able to compile each individual C file to an object file as a target. #include ..fool.h" #include·foo2.h" int i, sum-0; for (i=0;i

Explanation / Answer

CC = gcc

CFLAGS = -c -Wall # -wall for all warning

DEPS = foo1.h foo2.h

%.o: %.c $(DEPS)

$(CC) -c -o $@ $< $(CFLAGS)

run: all

./all

all: foo.o foo1.o foo2.o

$(CC) $(CFLAGS) -o all foo.o foo1.o foo2.o

foo: foo.c

$(CC) $(CFLAGS) foo.c

foo1: foo.c

$(CC) $(CFLAGS) foo1.c

foo: foo2.c

$(CC) $(CFLAGS) foo2.c

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