TARGET=debug
CFLAGS=
LFLAGS=
COMPILE=g++ -c
LINK=g++

##########################
#
# makes debug by default
# To specify release, for example, try
#	make TARGET=release
#
#
##########################

# generic flags
generic_CFLAGS=-Wall
generic_LFLAGS=-Wall

# debug build
debug_CFLAGS=-g -D_DEBUG
debug_LFLAGS=-g

# release build
release_CFLAGS=-DNDEBUG
release_LFLAGS=

# figure out build-specific flags
target_CFLAGS=$($(TARGET)_CFLAGS) $(generic_CFLAGS)
target_LFLAGS=$($(TARGET)_LFLAGS) $(generic_LFLAGS)

# all .cpp files (or .C files)
CPPFILES=bitstreams.cpp HuffmanHeap.cpp StaticHuffman.cpp StaticHuffman_Levels.cpp StaticHuffman_StoreWeights.cpp StaticHuffmanMain.cpp
# include files that pretty much everything includes.
# FOR LAZINESS, just put every include file, so we don't have to worry about the dependencies too much
COMMON_INCLUDE_FILES=bitstreams.h HuffmanHeap.h StaticHuffman.h StaticHuffman_Levels.h StaticHuffman_StoreWeights.h

# extra dependencies (too lazy for this)
# StaticHuffman_StoreWeights.cpp : StaticHuffman_StoreWeights.h

# automatically inferred stuff
CPP_O_FILES=$(CPPFILES:%.cpp=$(TARGET)/%.o)
OBJS=$(CPP_O_FILES)
EXE=$(TARGET)/huffman
TARGET_DIR_CREATED_FLAG=$(TARGET)/directory_created_dummy_file

all : $(EXE)

$(CPP_O_FILES) : $(COMMON_INCLUDE_FILES)

$(EXE) : $(OBJS)
	$(LINK) -o $(EXE) $(target_LFLAGS) $(LFLAGS) $(OBJS)

$(TARGET)/%.o : %.cpp $(TARGET_DIR_CREATED_FLAG)
	$(COMPILE) $(target_CFLAGS) $(CFLAGS) -o $@ $<

$(TARGET_DIR_CREATED_FLAG) :
	mkdir $(TARGET)
	echo "Do not delete this file" >$(TARGET_DIR_CREATED_FLAG)

clean:
	rm -r $(TARGET)

dump_vars :
	echo "CPPFILES"
	echo $(CPPFILES)
	echo "COMMON_INCLUDE_FILES"
	echo $(COMMON_INCLUDE_FILES)
	echo "CPP_O_FILES"
	echo $(CPP_O_FILES)
	echo "EXE"
	echo $(EXE)