'make' does not recompile when source file has been edited

Question

I\'m writing a little implementation of Conway\'s Game of Life in C. The source code is split in three files: main.c and functions.c/function

Answer 1

If you're using GCC (well, you are), then it can be solved generically by passing -MD option to the compiler, GCC will generate a file containing Make dependencies on included headers:

CC = gcc
OBJECTS = main.o functions.o

%.o : %.c
    $(CC) -MD -c $<

-include $(OBJECTS:.o=.d)

Some headers-related information can also be found in this question.