# CSE 374 Makefile exampmle for the talk/speak/shout program.
# Version 2: Variables

# The compiler: gcc for C programs
CC = gcc

# Compiler flags:
# -Wall for debugger warnings
# -std=c11 for updated standards
CFLAGS = -Wall -std=c11
ifdef DEBUG  # one option, pass DEBUG=true when you call make
	CFLAGS += -g 
endif

# The name of the program that we are producing.
TARGET = talk

# When we just run "make", what gets built? 
# This is a "phony" target
# that just tells make what other targets to build.
all: $(TARGET)

# All the .o files we need for our executable.
OBJS = main.o speak.o shout.o

# The executable
$(TARGET): $(OBJS)
	$(CC) $(CFLAGS) -o talk $(OBJS)

# An option for making a debug target
debug: CFLAGS += -g
debug: $(TARGET)

%.o : %.c
	$(CC) -c $(CFLAGS) -o $@ $<

# A "phony" target to remove built files and backups
clean:
	rm -f *.o talk *~

# find dependencies
depend: *.c
	gcc -MM $^  #try it with just -M