# Lines starting with the pound sign are comments.
#
# This is one of two options you might need to tweak.

EXECUTABLE = myprogram

# You can modify the below as well, but probably
# won't need to.
#

# CC is for the name of the C compiler. CPPFLAGS denotes pre-processor
# flags, such as -I options. CFLAGS denotes flags for the C compiler.
# CXXFLAGS denotes flags for the C++ compiler. You may add additional
# settings here, such as PFLAGS, if you are using other languages such
# as Pascal.

CC = gcc
CPPFLAGS = 
CFLAGS = -Wall -O2
CXXFLAGS = $(CFLAGS)
COMPILE = $(CC) $(CPPFLAGS) $(CFLAGS) -c

SRCS := $(wildcard *.c)
OBJS := $(patsubst %.c,%.o,$(SRCS))
DEPS := $(patsubst %.c,%.d,$(SRCS))

# "all" is the default target. Simply make it point to myprogram.

all: $(EXECUTABLE)

# Define the components of the program, and how to link them together.
# These components are defined as dependencies; that is, they must be
# made up-to-date before the code is linked.

$(EXECUTABLE): $(DEPS) $(OBJS)
	$(CC) -o $(EXECUTABLE) $(OBJS)

# Specify that the dependency files depend on the C source files.

%.d: %.c
	$(CC) -M $(CPPFLAGS) $< > $@
	$(CC) -M $(CPPFLAGS) $< | sed s/\\.o/.d/ >> $@

# Specify that all .o files depend on .c files, and indicate how
# the .c files are converted (compiled) to the .o files.

%.o: %.c
	$(COMPILE) -o $@ $<

clean:
	-rm $(OBJS) $(EXECUTABLE) $(DEPS) *~

explain:
	@echo "The following information represents your program:"
	@echo "Final executable name: $(EXECUTABLE)"
	@echo "Source files:     $(SRCS)"
	@echo "Object files:     $(OBJS)"
	@echo "Dependency files:   $(DEPS)"

depend: $(DEPS)
	@echo "Dependencies are now up-to-date."

-include $(DEPS)
