DEBUG = 0
LOGSOUND = 0
FRONTEND_SUPPORTS_RGB565 = 1

# system platform
ifeq ($(platform),)
   platform = unix
   ifeq ($(shell uname -a),)
      platform = win
      EXE_EXT = .exe
   else ifneq ($(findstring MINGW,$(shell uname -a)),)
      platform = win
   else ifneq ($(findstring Darwin,$(shell uname -a)),)
      platform = osx
      arch = intel
      ifeq ($(shell uname -p),powerpc)
         arch = ppc
      endif
   else ifneq ($(findstring win,$(shell uname -a)),)
      platform = win
   endif
else ifneq (,$(findstring armv,$(platform)))
   override platform += unix
else ifneq (,$(findstring rpi,$(platform)))
   override platform += unix
endif

TARGET_NAME := genesis_plus_gx

LIBM := -lm

GIT_VERSION ?= " $(shell git rev-parse --short HEAD || echo unknown)"
ifneq ($(GIT_VERSION)," unknown")
   CFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
endif

# Unix
ifneq (,$(findstring unix,$(platform)))
   TARGET := $(TARGET_NAME)_libretro.so
   fpic := -fPIC
   SHARED := -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined
   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DHAVE_ZLIB

   # Raspberry Pi
   ifneq (,$(findstring rpi,$(platform)))
      ENDIANNESS_DEFINES += -DALIGN_LONG
      CFLAGS += -fomit-frame-pointer -ffast-math
      ifneq (,$(findstring rpi1,$(platform)))
         PLATFORM_DEFINES += -DARM11 -marm -march=armv6j -mfpu=vfp -mfloat-abi=hard
      else ifneq (,$(findstring rpi2,$(platform)))
         PLATFORM_DEFINES += -DARM -marm -mcpu=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard
      else ifneq (,$(findstring rpi3,$(platform)))
         PLATFORM_DEFINES += -DARM -marm -mcpu=cortex-a53 -mfpu=neon-fp-armv8 -mfloat-abi=hard
      endif
   endif

# Portable Linux
else ifeq ($(platform), linux-portable)
   TARGET := $(TARGET_NAME)_libretro.so
   fpic := -fPIC -nostdlib
   SHARED := -shared -Wl,--version-script=libretro/link.T
   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DHAVE_ZLIB
   LIBM :=

# OS X
else ifeq ($(platform), osx)
   TARGET := $(TARGET_NAME)_libretro.dylib
   fpic := -fPIC
   SHARED := -dynamiclib
   ifeq ($(arch),ppc)
      ENDIANNESS_DEFINES := -DBYTE_ORDER=BIG_ENDIAN
   else
      ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   endif
   PLATFORM_DEFINES := -DHAVE_ZLIB

   OSXVER = `sw_vers -productVersion | cut -d. -f 2`
   OSX_LT_MAVERICKS = `(( $(OSXVER) <= 9)) && echo "YES"`
   fpic += -mmacosx-version-min=10.1
   ifndef ($(NOUNIVERSAL))
      CFLAGS  += $(ARCHFLAGS)
      LDFLAGS += $(ARCHFLAGS)
   endif

# iOS
else ifneq (,$(findstring ios,$(platform)))
   TARGET := $(TARGET_NAME)_libretro_ios.dylib
   fpic := -fPIC
   SHARED := -dynamiclib
   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DHAVE_ZLIB

   ifeq ($(IOSSDK),)
      IOSSDK := $(shell xcrun -sdk iphoneos -show-sdk-path)
   endif

   CC = cc -arch armv7 -isysroot $(IOSSDK)
   ifeq ($(platform),ios9)
      CC += -miphoneos-version-min=8.0
      PLATFORM_DEFINES += -miphoneos-version-min=8.0
   else
      CC += -miphoneos-version-min=5.0
      PLATFORM_DEFINES += -miphoneos-version-min=5.0
   endif

# Theos
else ifeq ($(platform), theos_ios)
   DEPLOYMENT_IOSVERSION = 5.0
   TARGET = iphone:latest:$(DEPLOYMENT_IOSVERSION)
   ARCHS = armv7 armv7s
   TARGET_IPHONEOS_DEPLOYMENT_VERSION=$(DEPLOYMENT_IOSVERSION)
   THEOS_BUILD_DIR := objs
   include $(THEOS)/makefiles/common.mk

   LIBRARY_NAME = $(TARGET_NAME)_libretro_ios

   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DHAVE_ZLIB

# QNX
else ifeq ($(platform), qnx)
   TARGET := $(TARGET_NAME)_libretro_qnx.so
   fpic := -fPIC
   SHARED := -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined
   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   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

# PS3
else ifneq (,$(filter $(platform), ps3 sncps3 psl1ght))
   TARGET := $(TARGET_NAME)_libretro_ps3.a
   PLATFORM_DEFINES := -D__CELLOS_LV2 -DALT_RENDER
   STATIC_LINKING = 1

   # sncps3
   ifneq (,$(findstring sncps3,$(platform)))
      CC = $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
      AR = $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
      PLATFORM_DEFINES += -DBYTE_ORDER=BIG_ENDIAN

   # PS3
   else ifneq (,$(findstring ps3,$(platform)))
      CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
      AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
      PLATFORM_DEFINES += -DBYTE_ORDER=BIG_ENDIAN

   # Lightweight PS3 Homebrew SDK
   else ifneq (,$(findstring psl1ght,$(platform)))
      TARGET := $(TARGET_NAME)_libretro_$(platform).a
      CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
      AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
   endif

# PSP
else ifeq ($(platform), psp1)
   TARGET := $(TARGET_NAME)_libretro_$(platform).a
   CC = psp-gcc$(EXE_EXT)
   AR = psp-ar$(EXE_EXT)
   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DPSP
   CFLAGS += -G0
   STATIC_LINKING = 1

# Vita
else ifeq ($(platform), vita)
   TARGET := $(TARGET_NAME)_libretro_$(platform).a
   CC = arm-vita-eabi-gcc$(EXE_EXT)
   AR = arm-vita-eabi-ar$(EXE_EXT)
   CFLAGS += -O3 -mfloat-abi=hard -ffast-math -fsingle-precision-constant
   ENDIANNESS_DEFINES := -DLSB_FIRST -DALIGN_LONG -DALT_RENDERER -DHAVE_ALLOCA_H -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DVITA
   STATIC_LINKING = 1

# CTR (3DS)
else ifeq ($(platform), ctr)
   TARGET := $(TARGET_NAME)_libretro_$(platform).a
   CC = $(DEVKITARM)/bin/arm-none-eabi-gcc$(EXE_EXT)
   AR = $(DEVKITARM)/bin/arm-none-eabi-ar$(EXE_EXT)
   ENDIANNESS_DEFINES := -DLSB_FIRST -DALIGN_LONG -DBYTE_ORDER=LITTLE_ENDIAN -DUSE_DYNAMIC_ALLOC
   PLATFORM_DEFINES := -DARM11 -D_3DS
   CFLAGS += -march=armv6k -mtune=mpcore -mfloat-abi=hard -marm -mfpu=vfp
   CFLAGS += -Wall -mword-relocations
   CFLAGS += -fomit-frame-pointer -ffast-math
   STATIC_LINKING = 1

# Xbox 360
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
   ENDIANNESS_DEFINES := -DBYTE_ORDER=BIG_ENDIAN
   STATIC_LINKING = 1

# Nintendo GameCube / Wii / WiiU
else ifneq (,$(filter $(platform), ngc wii wiiu))
   TARGET := $(TARGET_NAME)_libretro_$(platform).a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   ENDIANNESS_DEFINES := -DBYTE_ORDER=BIG_ENDIAN
   PLATFORM_DEFINES := -DGEKKO -mcpu=750 -meabi -mhard-float -DALT_RENDER
   PLATFORM_DEFINES += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
   STATIC_LINKING = 1

   # Nintendo WiiU
   ifneq (,$(findstring wiiu,$(platform)))
      PLATFORM_DEFINES += -DWIIU -DHW_RVL -mwup -DUSE_DYNAMIC_ALLOC

   # Nintendo Wii
   else ifneq (,$(findstring wii,$(platform)))
      PLATFORM_DEFINES += -DHW_RVL -mrvl

   # Nintendo GameCube
   else ifneq (,$(findstring ngc,$(platform)))
      PLATFORM_DEFINES += -DHW_DOL -mrvl
   endif

# emscripten
else ifeq ($(platform), emscripten)
   TARGET := $(TARGET_NAME)_libretro_$(platform).bc
   ENDIANNESS_DEFINES := -DLSB_FIRST -DALIGN_LONG -DBYTE_ORDER=LITTLE_ENDIAN -DHAVE_ZLIB
   STATIC_LINKING = 1

# GCW0
else ifeq ($(platform), gcw0)
   TARGET := $(TARGET_NAME)_libretro.so
   CC = /opt/gcw0-toolchain/usr/bin/mipsel-linux-gcc
   AR = /opt/gcw0-toolchain/usr/bin/mipsel-linux-ar
   SHARED := -shared -Wl,--version-script=libretro/link.T -Wl,--no-undefined
   fpic := -fPIC
   LDFLAGS += $(PTHREAD_FLAGS)
   CFLAGS += $(PTHREAD_FLAGS) -DHAVE_MKDIR
   CFLAGS += -ffast-math -march=mips32 -mtune=mips32r2 -mhard-float

# Windows
else
   TARGET := $(TARGET_NAME)_libretro.dll
   CC = gcc
   SHARED := -shared -static-libgcc -static-libstdc++ -Wl,--version-script=libretro/link.T -Wl,--no-undefined

   ENDIANNESS_DEFINES := -DLSB_FIRST -DBYTE_ORDER=LITTLE_ENDIAN
   PLATFORM_DEFINES := -DHAVE_ZLIB

endif

LDFLAGS += $(LIBM)
ifeq ($(SHARED_LIBVORBIS), 1)
	LDFLAGS += -lvorbisfile
endif

ifeq ($(DEBUG), 1)
   CFLAGS += -O0 -g
else
   CFLAGS += -O2 -DNDEBUG
endif

CORE_DIR := .

ifeq ($(SHARED_LIBVORBIS),)
   TREMOR_SRC_DIR := $(CORE_DIR)/core/tremor
endif
LIBRETRO_DIR := $(CORE_DIR)/libretro

include $(LIBRETRO_DIR)/Makefile.common

OBJECTS := $(SOURCES_C:.c=.o)

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

ifeq ($(SHARED_LIBVORBIS), 1)
	DEFINES := -DUSE_LIBVORBIS
else
	DEFINES := -DUSE_LIBTREMOR
endif
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 += $(INCFLAGS)
LIBRETRO_CFLAGS += $(BPP_DEFINES) \
					$(ENDIANNESS_DEFINES) \
					$(PLATFORM_DEFINES) \
					-D__LIBRETRO__

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

ifeq ($(platform), theos_ios)
COMMON_FLAGS := $(COMMON_DEFINES) $(INCFLAGS) -I$(THEOS_INCLUDE_PATH) -Wno-error
$(LIBRARY_NAME)_CFLAGS += $(CFLAGS) $(LIBRETRO_CFLAGS) $(COMMON_FLAGS)
${LIBRARY_NAME}_FILES = $(SOURCES_C)
${LIBRARY_NAME}_LIBRARIES = m z
include $(THEOS_MAKE_PATH)/library.mk
else
all: $(TARGET)

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

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

clean-objs:
	rm -f $(OBJECTS)

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

.PHONY: clean clean-objs
endif