Make recipe rule
- Eliot Muir
Owned by Eliot Muir
Make allows one to define recipes to make common intermediate files
%.o: %.c*
$(CC) $(CFLAGS) -c $< -o $@The % is a wild card that make knows how to replace - so if has to make main.o the % will be replaced with “main”. The * at the end of c means we can match both C++ .cpp and .c files. Quite helpful.
After the : we see the dependencies - which is main.cpp if we dealing with main
The $< variable is replaced with the first input - in this case main.cpp.
$@ variable is replaced with the output - which is main.o.
$^ - replaced with the list of pre-requisites.
Make is very sensitive about using tabs. There has to be tab character between the : and the dependency list. Each line after the rule needs to start with a tab.