all: myapp

# Which compiler
CC = gcc

# Where to install
INSTDIR = /usr/local/bin

# Where are include file kept
INCLUDE = .

# Options for development
CFLAGS = -g -Wall -ansi

# Options for release
# CFLAGS = -O -Wall-ansi

myapp: main.o 2.o 3.o
	$(CC) -o myapp main.o 2.o 3.o

main.o: main.c a.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c main.c

2.o: 2.c a.h b.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c 2.c

3.o: 3.c b.h c.h
	$(CC) -I$(INCLUDE) $(CFLAGS) -c 3.c

clean: 
	-rm main.o 2.o 3.o

install:
	@if [ -d $(INSTDIR) ]; \
		then \
		cp myapp $(INSTDIR);\
		chmod a+x $(INSTDIR)/myapp;\
		chmod og-w $(INSTDIR)/myapp;\
		echo "Installed in $(INSTDIR)";\
	else \
	  echo "Sorry, $(INSTDIR) does not exist";\
	fi

