all: sort_file time_sort

%.o: %.c
	gcc -c $<

time_sort: time_sort.o insertion_sort.o merge_sort.o
	gcc -o time_sort time_sort.o insertion_sort.o merge_sort.o -lm

sort_file: sort_file.o merge_sort.o
	gcc -o sort_file sort_file.o merge_sort.o -lm


## The following lines are not necessary any more because of the
## generic rule to create .o files above:

# insertion_sort.o: insertion_sort.c
# 	gcc -c insertion_sort.c

# merge_sort.o: merge_sort.c
# 	gcc -c merge_sort.c

# sort_file.o: sort_file.c
# 	gcc -c sort_file.c

# time_sort.o: time_sort.c
# 	gcc -c time_sort.c