# OPTIONS.
DEBUG := 1
#DEBUG_PARANOID := 1

OS := LINUX
#OS := WIN32

#CC = clang

# VERSION.
VMAJOR			:= 0
VMINOR			:= 0
VREV				:= 1
VERSION			= -DVMAJOR=$(VMAJOR) -DVMINOR=$(VMINOR) -DVREV=$(VREV)
VERSIONFILE	= VERSION

# OBJECTS.
APPNAME := Lephisto
OBJS := $(shell find ../src/ -name '*.c' -print)
OBJS := $(OBJS:%.c=%.o)

# CFLAGS
CLUA := -I../lib/lua
CSDL := $(shell sdl-config --cflags)
CXML := $(shell xml2-config --cflags)
CTTF := $(shell freetype-config --cflags)
CGL  :=
CFLAGS := $(CLUA) $(CSDL) $(CXML) $(CTTF) $(CGL) $(VERSION) -D$(OS)

# OS Stuff.
ifeq ($(OS),LINUX)
CFLAGS += -D_POSIX_SOURCE
endif

# Debug stuff.
ifdef DEBUG
CFLAGS += -W -Wall -Wextra -Wunused -Wshadow -Wpointer-arith -Wmissing-prototypes \
					-Winline -Wcast-align -Wmissing-declarations -fstack-protector \
					-fstack-protector-all -g3 -DDEBUG -DLUA_USE_APICHECK -std=c99

ifdef DEBUG_PARANOID
CFLAGS += -DDEBUG_PARANOID
endif

# Handle OS Debug stuff here.
ifeq ($(OS), LINUX)
LDFLAGS += -rdynamic
endif # Linux.

else # DEBUG
CFLAGS += -O2 -funroll-loops -pipe -std=c99
endif

# LDFLAGS.
LDLUA := ../lib/lua/liblua.a
LDSDL := $(shell sdl-config --libs) -lSDL_image -lSDL_mixer
LDXML := $(shell xml2-config --libs)
LDTTF := $(shell freetype-config --libs)
LDGL	:= -lGL
LDPNG   := -lpng
LDFLAGS := -lm $(LDLUA) $(LDSDL) $(LDXML) $(LDTTF) $(LDGL) $(LDPNG)

# This is just for gstat to run some analysis on performance.
ifdef DEBUG
LDFLAGS += -pg
endif

# DATA.
DATA_AI   := $(shell find ../scripts/ai/ -name '*.lua')
DATA_GFX  := $(shell find ../gfx/ -name '*.png')
DATA_XML  := $(shell find ../dat/ -name '*.xml' -o -name '*.ttf')
DATA_SND  := $(shell find ../snd/ -name '*.ogg' -o -name '*.wav') ../snd/music.lua
DATA_MISN	:= $(shell find ../dat/missions/ -name '*.lua')
DATA := data
DATAFILES := $(DATA_AI) $(DATA_GFX) $(DATA_XML) $(DATA_SND) $(DATA_MISN)

# TARGETS.
.PHONY: all clean purge

%.o: %.c %.h
	@$(CC) -c $(CFLAGS) -o $@ $<
	@echo -e "\tCC $@"

all: utils data lua lephisto

help:
	@echo "Possible targets are:":
	@echo "		lua 			- Makes Lua."
	@echo "		lephisto 	- Makes the Lephisto binary."
	@echo "		mkspr			- Makes the mkspr utility."
	@echo "		data			- Creates the data file."
	@echo "		utils			- Makes all the utilities."
	@echo "		docs			- Creates the doxygen documentation."
	@echo "		clean			- Removes Lephisto's main binary and data file."
	@echo " 	purge			- Removes everything done."

lephisto: $(OBJS)
	@$(CC) $(LDFLAGS) -o $(APPNAME) $(OBJS) ../lib/lua/liblua.a
	@echo -e "\tLD $(APPNAME)"

lua:
	@if [ ! -e ../lib/lua/liblua.a ]; then make -C ../lib/lua a; fi

pack: ../src/pack.c ../utils/pack/main.c
	@make -C ../utils/pack

mksprite: ../utils/mkspr/main.c
	@make -C ../utils/mkspr

$(VERSIONFILE):
	@echo -n "$(VMAJOR).$(VMINOR).$(VREV)" > $(VERSIONFILE)

data: $(DATAFILES)
	@echo -n "$(VMAJOR).$(VMINOR).$(VREV)" > $(VERSIONFILE)
	@echo -e "\tCreating data..\n"
	@./pack $(DATA) $(DATAFILES) $(VERSIONFILE)

utils: mksprite pack

docs:
	@(cd docs/doxygen; doxygen)

clean:
	@echo -e "\tRemoving data"
	@$(RM) $(DATA)
	@$(RM) $(OBJS)
	@echo -e "\tRemoving object files"

purge: clean
	@echo -e "\tCleaning utilites"
	@make -C ../utils/pack clean
	@make -C ../utils/mkspr clean
	@echo -e "\tCleaning Lua"
	@make -C ../lib/lua clean
	@echo -e "\tRemoving binaries."
	@$(RM) Lephisto mksprite data pack