install_dir ?= $(HOME)/local/anaglym
WINCHECK := $(shell which msys-1.0.dll >/dev/null 2>&1; if [ $$? -eq 0 ]; then echo MSYS; fi)
ifeq ($(strip $(WINCHECK)),)
PLATFORM := PLATFORM_LINUX
else
PLATFORM := PLATFORM_WINDOWS
endif

TARGET		:= anaglym
SUBDIRS		:= WFObj PhyObj TextureCache OdeWorld
SUBDIR_OBJS	:= $(foreach sd,$(SUBDIRS),$(sd)/$(sd).o)
CXXOBJS		:= $(patsubst %.cc,%.o,$(wildcard *.cc))
CXXOBJS		:= $(patsubst ag_lua.o,,$(CXXOBJS))
CXXOBJS		:= $(patsubst sdl_keymap.o,,$(CXXOBJS))
OBJS		:= $(CXXOBJS) $(SUBDIR_OBJS) ag_lua.o sdl_keymap.o
CXXDEPS		:= $(CXXOBJS:.o=.dep)
DEPS		:= $(CDEPS) $(CXXDEPS)
DEPS		:= $(patsubst ag_lua.dep,,$(DEPS))
DEPS		:= $(patsubst sdl_keymap.dep,,$(DEPS))

LUAINCLUDE := $(shell pkg-config --cflags lua5.1 2>/dev/null)
ifeq ($(strip $(LUAINCLUDE)),)
LUAINCLUDE := $(shell which lua-config >/dev/null 2>&1; if [ $$? -eq 0 ]; then lua-config --include; fi)
endif
ifeq ($(strip $(LUAINCLUDE)),)
LUAINCLUDE := -I/usr/include/lua5.1
endif

LUALIBS    := $(shell pkg-config --libs lua5.1 2>/dev/null)
ifeq ($(strip $(LUALIBS)),)
LUALIBS    := $(shell which lua-config >/dev/null 2>&1; if [ $$? -eq 0 ]; then lua-config --libs; fi)
endif
ifeq ($(strip $(LUALIBS)),)
LUALIBS    := -llua5.1
endif

FTGLINCLUDE := $(shell pkg-config --cflags ftgl)
FTGLLIBS    := $(shell pkg-config --libs ftgl)

SDLINCLUDE  := $(shell sdl-config --cflags)
SDLLIBS     := -lSDL_image -lSDL_sound $(shell sdl-config --libs)

ODEINCLUDE  := $(shell ode-config --cflags)
ODELIBS     := $(shell ode-config --libs)

SMPEGLIBS   := $(shell smpeg-config --libs)

VORBISLIBS  := -lvorbisfile

TOPLEVEL    := $(shell pwd)

ifeq ($(PLATFORM),PLATFORM_WINDOWS)
GLLIBS      := -lopengl32 -lglu32
WINDOWSLIBS := -lmingw32
TARGET      := $(TARGET).exe
CC			:= gcc
else
GLLIBS      := -lGL -lGLU
endif

export CPPFLAGS := $(LUAINCLUDE) $(SDLINCLUDE) $(ODEINCLUDE) $(FTGLINCLUDE) -I$(TOPLEVEL) -D$(PLATFORM)
export CFLAGS   := $(CPPFLAGS) -O2 -Wall
export CXXFLAGS := $(CFLAGS)
export LDFLAGS  := $(LUALIBS) $(ODELIBS) $(GLLIBS) $(WINDOWSLIBS) $(SDLLIBS) $(FTGLLIBS) $(SMPEGLIBS) $(VORBISLIBS)

ifdef DEBUG
	CFLAGS += -g
	CXXFLAGS += -g
endif

all: $(TARGET)

$(TARGET): $(OBJS)
	$(CXX) -o $@ $^ $(LDFLAGS)

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

%.o: %.cc
	$(CXX) -c -o $@ $(CPPFLAGS) $(CXXFLAGS) $<

ag_lua.cc: ag.lua
	xxd -i $< > $@

ag_lua.o: ag_lua.cc

sdl_keymap.o: sdl_keymap.cc

sdl_keymap.cc: gen-sdl-keymap.pl
	perl $<

# Make dependency files
%.dep: %.c
	@set -e; rm -f $@; \
	  $(CC) -MM $(CPPFLAGS) $< | sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' > $@

%.dep: %.cc
	@set -e; rm -f $@; \
	  $(CXX) -MM $(CPPFLAGS) $< | sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' > $@

.PHONY: dist
dist: all
	-rm -rf $@
	-mkdir -p $@
	cp -a lib $@/lib
	cp -a doc $@/doc
	cp $(TARGET) $@
ifeq ($(PLATFORM),PLATFORM_WINDOWS)
# copy DLLs to distribution directory
	cp -a $(shell which SDL.dll) $@
	cp -a $(shell which SDL_image.dll) $@
# jh 2009-10-29 statically linking with ODE now
#	cp -a $(shell which ODE.dll) $@
	cp -a $(shell which jpeg.dll) $@
	cp -a $(shell which libpng12-0.dll) $@
	cp -a $(shell which zlib1.dll) $@
	cp -a $(shell which libtiff-3.dll) $@
	cp -a $(shell which libftgl-2.dll) $@
	cp -a $(shell which lua5.1.dll) $@
	cp -a $(shell which freetype6.dll) $@
	cp -a $(shell which libogg-0.dll) $@
	cp -a $(shell which libvorbis-0.dll) $@
	cp -a $(shell which libvorbisfile-3.dll) $@
endif

.PHONY: install
install: dist
	@echo "Installing to '$(install_dir)', override with 'make install_dir=path'"
	-mkdir -p $(install_dir)
	rsync -av dist/ $(install_dir)

clean:
	-rm -f $(OBJS) $(DEPS) $(TARGET) stdout.txt stderr.txt sdl_keymap.cc ag_lua.cc

distclean: clean
	-rm -rf dist

-include $(DEPS)