I'm trying to write a Makefile that compiles a *.c into an *.o and then move it to obj/. However when I try to link all the *.o files in main I get an error as if the generated files were not found. I tried to prefix the code with the right path but it wouldn't find it anyway.
Does anyone have an idea on what I need to change to my code so that it does find the *.o files.
This is my Makefile:
EXEC = main
CFLAGS = -c -Wall -g -I include -std=c99
OBJECTS = main.o jeu.o grille.o io.o
EXEC = main
DOCGEN = doxygen
vpath %.c src/
vpath %.h include/
vpath %.o obj/
vpath main bin/
all: main
main: $(OBJECTS)
@echo "\n==== Linking $@ $^ ===="
@gcc -o $@ $(OBJECTS)
@mkdir -p bin
@mv $@ bin/
#@mkdir -p obj
#@mv *.o obj/
main.o: io.h jeu.h
io.o: io.h
jeu.o: jeu.h
%.o: %.c grille.h
@echo "\n---- Rule " $@ $< "----"
@gcc $(CFLAGS) $<
@mkdir -p obj
@mv $@ obj/
doc:
@mkdir -p doc
@$(DOCGEN)
clean:
@rm -rf doc/
@rm -rf bin/
@rm -rf obj/
@rm -f *.xz
Any suggestions are welcome. I have read that vpath is not recommended for finding generated files. But this is an assignment and I have to use it this way.
If I uncomment the two lines and comment the last two lines from the %.o rule, the code works great, but I cannot do that.
This is the error at execution:
---- Rule main.o src/main.c ----
---- Rule jeu.o src/jeu.c ----
---- Rule grille.o src/grille.c ----
---- Rule io.o src/io.c ----
==== Linking main main.o jeu.o grille.o io.o ====
gcc: error: main.o: No such file or directory
gcc: error: jeu.o: No such file or directory
gcc: error: grille.o: No such file or directory
gcc: error: io.o: No such file or directory
gcc: fatal error: no input files
compilation terminated.
Makefile:15: recipe for target 'main' failed
make: *** [main] Error 1
Consider changing the compile rule to refer to the object folder:
obj/%.o: %.c
[ -d obj ] || mkdir -p obj
gcc -o $@ $<