# An example of a decent makefile. For examples of truly spectacular
# makefiles, look at the Linux kernel source. You may not even need
# all the features I'm using here!

# A few convenience variables. They come in handy later.
BAD_PROGRAMS = not_null_ending_string mem_leak dang_ref
GOOD_PROGRAMS = file_open_close input_read malloc_fish \
		sort recursive_factorial proc_quick hostname \
                strtok_r_path
PROGRAMS = $(GOOD_PROGRAMS) $(BAD_PROGRAMS)
CFLAGS = -Wall -Wextra -std=gnu99
CC = gcc

# Already proving their worth!
all: $(PROGRAMS)

# Implicit rule - any time we need a .o file in an explicit rule,
#                 we look for a .c file with the same base name 
#                 and make a .o file out of it.
%.o : %.c
	$(CC) $(CFLAGS) -c $<

% : %.o
	$(CC) -o $@ $^

# One more time, convenience of variables!
clean:
	rm -f *.o $(PROGRAMS) tmp