DEBUG = 0
LOGSOUND = 0
FRONTEND_SUPPORTS_RGB565 = 1

GENPLUS_SRC_DIR := core
LIBRETRO_DIR	:= libretro

ifneq ($(EMSCRIPTEN),)
   platform = emscripten
endif

ifeq ($(platform),)
platform = unix
ifeq ($(shell uname -a),)
   platform = win
else ifneq ($(findstring MINGW,$(shell uname -a)),)
   platform = win
else ifneq ($(findstring Darwin,$(shell uname -a)),)
   platform = osx
else ifneq ($(findstring win,$(shell uname -a)),)
   platform = win
endif
endif

# system platform
system_platform = unix
ifeq ($(shell uname -a),)
EXE_EXT = .exe
   system_platform = win
else ifneq ($(findstring Darwin,$(shell uname -a)),)
   system_platform = osx
else ifneq ($(findstring MINGW,$(shell uname -a)),)
   system_platform = win
endif

TARGET_NAME := genesis_plus_gx

ifeq ($(platform), unix)
   TARGET := $(TARGET_NAME)_libretro.so
   fpic := -fPIC
   SHARED := -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined -lz
   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB
else ifeq ($(platform), osx)
   TARGET := $(TARGET_NAME)_libretro.dylib
   fpic := -fPIC
   SHARED := -dynamiclib -lz
   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB
else ifeq ($(platform), ios)
   TARGET := $(TARGET_NAME)_libretro_ios.dylib
   fpic := -fPIC
   SHARED := -dynamiclib -lz
   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB -miphoneos-version-min=5.0

   CC = clang -arch armv7 -isysroot $(IOSSDK) -miphoneos-version-min=5.0
else ifeq ($(platform), qnx)
   TARGET := $(TARGET_NAME)_libretro_qnx.so
   fpic := -fPIC
   SHARED := -lm -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined -lz
   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB
	CC = qcc -Vgcc_ntoarmv7le
	AR = qcc -Vgcc_ntoarmv7le
	PLATFORM_DEFINES := -D__BLACKBERRY_QNX__ -marm -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=softfp
else ifeq ($(platform), ps3)
   TARGET := $(TARGET_NAME)_libretro_ps3.a
   CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
   AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
   PLATFORM_DEFINES := -D__CELLOS_LV2 -DALT_RENDER
	STATIC_LINKING = 1
else ifeq ($(platform), sncps3)
   TARGET := $(TARGET_NAME)_libretro_ps3.a
   CC = $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
   AR = $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
   PLATFORM_DEFINES := -D__CELLOS_LV2 -DALT_RENDER
	STATIC_LINKING = 1
else ifeq ($(platform), psl1ght)
   TARGET := $(TARGET_NAME)_libretro_psl1ght.a$(EXE_EXT)
   CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
   AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
   PLATFORM_DEFINES := -D__CELLOS_LV2 -DALT_RENDER
	STATIC_LINKING = 1
else ifeq ($(platform), psp1)
	TARGET := $(TARGET_NAME)_libretro_psp1.a$(EXE_EXT)
	CC = psp-gcc$(EXE_EXT)
	AR = psp-ar$(EXE_EXT)
	ENDIANNESS_DEFINES := -DLSB_FIRST
	PLATFORM_DEFINES := -DPSP
	CFLAGS += -G0
	STATIC_LINKING = 1
else ifeq ($(platform), xenon)
   TARGET := $(TARGET_NAME)_libretro_xenon360.a
   CC = xenon-gcc$(EXE_EXT)
   AR = xenon-ar$(EXE_EXT)
   PLATFORM_DEFINES := -D__LIBXENON__ -DALT_RENDER
	STATIC_LINKING = 1
else ifeq ($(platform), ngc)
   TARGET := $(TARGET_NAME)_libretro_ngc.a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   PLATFORM_DEFINES := -DGEKKO -DHW_DOL -mrvl -mcpu=750 -meabi -mhard-float -DALT_RENDER
	STATIC_LINKING = 1
else ifeq ($(platform), wii)
   TARGET := $(TARGET_NAME)_libretro_wii.a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   PLATFORM_DEFINES := -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DALT_RENDER
	STATIC_LINKING = 1
else ifneq (,$(findstring armv,$(platform)))
   TARGET := $(TARGET_NAME)_libretro.so
   fpic := -fPIC
   SHARED := -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined -lz
   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB
   CC = gcc
ifneq (,$(findstring cortexa8,$(platform)))
   PLATFORM_DEFINES += -marm -mcpu=cortex-a8
else ifneq (,$(findstring cortexa9,$(platform)))
   PLATFORM_DEFINES += -marm -mcpu=cortex-a9
endif
   PLATFORM_DEFINES += -marm
ifneq (,$(findstring neon,$(platform)))
   PLATFORM_DEFINES += -mfpu=neon
   HAVE_NEON = 1
endif
ifneq (,$(findstring softfloat,$(platform)))
   PLATFORM_DEFINES += -mfloat-abi=softfp
else ifneq (,$(findstring hardfloat,$(platform)))
   PLATFORM_DEFINES += -mfloat-abi=hard
endif
   PLATFORM_DEFINES += -DARM
else ifeq ($(platform), emscripten)
   TARGET := $(TARGET_NAME)_libretro_emscripten.bc
   ENDIANNESS_DEFINES := -DLSB_FIRST
else
   TARGET := $(TARGET_NAME)_libretro.dll
   CC = gcc
   SHARED := -shared -static-libgcc -static-libstdc++ -Wl,--version-script=libretro/link.T -Wl,--no-undefined -lz

   ENDIANNESS_DEFINES := -DLSB_FIRST
   PLATFORM_DEFINES := -DHAVE_ZLIB
endif

ifeq ($(DEBUG), 1)
   CFLAGS += -O0 -g
else ifeq ($(platform),qnx)
	CFLAGS += -Os -DNDEBUG
else ifeq ($(platform), emscripten)
	CFLAGS += -O2 -DNDEBUG
else
	CFLAGS += -O3 -DNDEBUG
endif
	
LIBRETRO_SRC := $(GENPLUS_SRC_DIR)/genesis.c \
			$(GENPLUS_SRC_DIR)/vdp_ctrl.c \
			$(GENPLUS_SRC_DIR)/vdp_render.c \
			$(GENPLUS_SRC_DIR)/system.c \
			$(GENPLUS_SRC_DIR)/io_ctrl.c \
			$(GENPLUS_SRC_DIR)/loadrom.c \
			$(GENPLUS_SRC_DIR)/mem68k.c \
			$(GENPLUS_SRC_DIR)/state.c \
			$(GENPLUS_SRC_DIR)/memz80.c \
			$(GENPLUS_SRC_DIR)/membnk.c \
			$(GENPLUS_SRC_DIR)/input_hw/activator.c \
			$(GENPLUS_SRC_DIR)/input_hw/gamepad.c \
			$(GENPLUS_SRC_DIR)/input_hw/input.c \
			$(GENPLUS_SRC_DIR)/input_hw/lightgun.c \
			$(GENPLUS_SRC_DIR)/input_hw/mouse.c \
			$(GENPLUS_SRC_DIR)/input_hw/paddle.c \
			$(GENPLUS_SRC_DIR)/input_hw/sportspad.c \
			$(GENPLUS_SRC_DIR)/input_hw/teamplayer.c \
			$(GENPLUS_SRC_DIR)/input_hw/xe_a1p.c \
			$(GENPLUS_SRC_DIR)/input_hw/terebi_oekaki.c \
			$(GENPLUS_SRC_DIR)/cd_hw/cd_cart.c \
			$(GENPLUS_SRC_DIR)/cd_hw/cdc.c \
			$(GENPLUS_SRC_DIR)/cd_hw/cdd.c \
			$(GENPLUS_SRC_DIR)/cd_hw/gfx.c \
			$(GENPLUS_SRC_DIR)/cd_hw/pcm.c \
			$(GENPLUS_SRC_DIR)/cd_hw/scd.c \
			$(GENPLUS_SRC_DIR)/cart_hw/areplay.c \
			$(GENPLUS_SRC_DIR)/cart_hw/md_cart.c \
			$(GENPLUS_SRC_DIR)/cart_hw/sms_cart.c \
			$(GENPLUS_SRC_DIR)/cart_hw/eeprom_93c.c \
			$(GENPLUS_SRC_DIR)/cart_hw/eeprom_i2c.c \
			$(GENPLUS_SRC_DIR)/cart_hw/eeprom_spi.c \
			$(GENPLUS_SRC_DIR)/cart_hw/ggenie.c \
			$(GENPLUS_SRC_DIR)/cart_hw/sram.c \
			$(GENPLUS_SRC_DIR)/cart_hw/svp/ssp16.c \
			$(GENPLUS_SRC_DIR)/cart_hw/svp/svp.c \
			$(GENPLUS_SRC_DIR)/ntsc/md_ntsc.c \
			$(GENPLUS_SRC_DIR)/ntsc/sms_ntsc.c \
			$(GENPLUS_SRC_DIR)/sound/eq.c \
			$(GENPLUS_SRC_DIR)/sound/sound.c \
			$(GENPLUS_SRC_DIR)/sound/ym2612.c \
			$(GENPLUS_SRC_DIR)/sound/ym2413.c \
			$(GENPLUS_SRC_DIR)/sound/sn76489.c \
			$(GENPLUS_SRC_DIR)/sound/blip_buf.c \
			$(GENPLUS_SRC_DIR)/z80/z80.c \
			$(GENPLUS_SRC_DIR)/m68k/m68kcpu.c \
			$(GENPLUS_SRC_DIR)/m68k/s68kcpu.c \
			$(LIBRETRO_DIR)/libretro.c

LIBRETRO_OBJ := $(LIBRETRO_SRC:.c=.o)

ifeq ($(LOGSOUND), 1)
LIBRETRO_CFLAGS := -DLOGSOUND
endif

DEFINES := 
CFLAGS += $(fpic) $(DEFINES) $(CODE_DEFINES)

ifeq ($(FRONTEND_SUPPORTS_RGB565), 1)
# if you have a new frontend that supports RGB565
BPP_DEFINES = -DUSE_16BPP_RENDERING -DFRONTEND_SUPPORTS_RGB565
else
BPP_DEFINES = -DUSE_15BPP_RENDERING
endif

LIBRETRO_CFLAGS += -I$(GENPLUS_SRC_DIR) \
		-I$(GENPLUS_SRC_DIR)/sound \
		-I$(GENPLUS_SRC_DIR)/input_hw \
		-I$(GENPLUS_SRC_DIR)/cart_hw \
		-I$(GENPLUS_SRC_DIR)/cd_hw \
		-I$(GENPLUS_SRC_DIR)/cart_hw/svp \
		-I$(GENPLUS_SRC_DIR)/m68k \
		-I$(GENPLUS_SRC_DIR)/z80 \
		-I$(GENPLUS_SRC_DIR)/ntsc \
		-I$(LIBRETRO_DIR) \
		$(BPP_DEFINES) \
		$(ENDIANNESS_DEFINES) \
		$(PLATFORM_DEFINES) \
		-D__LIBRETRO__

ifeq ($(platform), qnx)
	LIBRETRO_CFLAGS += -D__inline__=inline
else
	LIBRETRO_CFLAGS += -DINLINE="static inline"
endif

LIBRETRO_LIBS := -lm


all: $(TARGET)

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

$(TARGET): $(LIBRETRO_OBJ)
ifeq ($(STATIC_LINKING), 1)
	$(AR) rcs $@ $(LIBRETRO_OBJ)
else
	$(CC) -o $(TARGET) $(fpic) $(LIBRETRO_OBJ) $(LIBRETRO_LIBS) $(SHARED) 
endif

clean-objs:
	rm -f $(LIBRETRO_OBJ)

clean:
	rm -f $(LIBRETRO_OBJ)
	rm -f $(TARGET)

.PHONY: clean clean-objs