CC = cc
LIBS = -lpthread
FLAGS = -O 
EXECS = hello p_greetings p_hello p_matrix_para p_greetings2  p_cpi

all: $(EXECS)

hello: hello.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS)

p_greetings: p_greetings.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS)

p_greetings2: p_greetings2.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS)

p_hello: p_hello.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS)

p_matrix_para: p_matrix_para.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS)

p_cpi: p_cpi.c
	$(CC) $(FLAGS) -o $@ $? $(LIBS) -lm

clean:
	rm $(EXECS)