Help with Makefile

[ultimateDesi]

i want to gave much details as possible.

working directory (~/a1/shell)

in the shell directory i have Makefile that i need help with.

also in the shell directory i have subdirectory's (obj, src, include)

obj subdirectory is empty
src subdirectory i have these files inside: parser.c, shutil.c, sshell.c
include subdirectory i have these files inside: parser.h, shell.h

My current Makefile

# Beginning of Makefile
OBJS = shutil.o parser.o sshell.o
HEADER_FILES = shell.h parser.h
EXECUTABLE = sshell
CFLAGS = -Wall
CC = gcc
# End of configuration options

#What needs to be built to make all files and dependencies
all: $(EXECUTABLE)

#Create the main executable
$(EXECUTABLE): $(OBJS)
$(CC) -o $(EXECUTABLE) $(OBJS)

#Recursively build object files
%.o: %.c
$(CC) $(CFLAGS) -c -o $@ $<

#Define dependencies for objects based on header files
#We are overly conservative here, parser.o should depend on parser.h only
$(OBJS) : $(HEADER_FILES)

clean:
-rm -f $(EXECUTABLE) *.o
run: $(EXECUTABLE)
./$(EXECUTABLE)

tarball:
-rm -f $(EXECUTABLE) *.o
(cd .. ; tar czf UltimateDesi_a1.tar.z shell )

# End of Makefile

I wanted it so: all .o files are created in the obj subdirectory, and my application, sshell, is created in the shell directory.

i am getting this error when i run the make run: No rule to make target 'shell.h', needed by 'shutil.o'. stop

Can somebody please help me, i am new to Makefile and new to unix/linux.

[Katherine]

For the following directory,

shell
|- Makefile
|-OBJ (folder)
|-SRC (folder)
|- .c files
|-INCLUDE (folder)
|- .h files


Add to your makefile

OUTPUT_OPTION = -o OBJ/$@        #This specifies implicit output rule 
VPATH = INCLUDE                   #Makefile will look for prereq files in current directory then in VPATH.

if you want the executable in OBJ folder:

$(CC) -o $(OUTPUT_OPTION) $(OBJS)