DEBUG = 0
FRONTEND_SUPPORTS_RGB565 = 1
TILED_RENDERING = 1

CORE_DIR := .

ifeq ($(platform),)
platform = unix
ifeq ($(shell uname -a),)
   platform = win
else ifneq ($(findstring Darwin,$(shell uname -a)),)
   platform = osx
   arch = intel
ifeq ($(shell uname -p),arm)
   arch = arm
endif
ifeq ($(shell uname -p),powerpc)
   arch = ppc
endif
else ifneq ($(findstring MINGW,$(shell uname -a)),)
   platform = win
endif
endif

core = gba
NEED_BPP = 32
NEED_BLIP = 1
NEED_STEREO_SOUND = 1
NEED_CRC32 = 0
CORE_DEFINE :=

prefix := /usr
libdir := $(prefix)/lib

LIBRETRO_DIR := libretro

TARGET_NAME := mednafen_$(core)_libretro
GIT_VERSION := " $(shell git rev-parse --short HEAD || echo unknown)"
ifneq ($(GIT_VERSION)," unknown")
	CXXFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
endif

ifeq ($(platform), unix)
   TARGET := $(TARGET_NAME).so
   fpic := -fPIC
   SHARED := -shared -Wl,--no-undefined -Wl,--version-script=link.T
   ifneq ($(shell uname -p | grep -E '((i.|x)86|amd64)'),)
      IS_X86 = 1
   endif
   LDFLAGS += $(PTHREAD_FLAGS)
   FLAGS += $(PTHREAD_FLAGS)
else ifeq ($(platform), osx)
   TARGET := $(TARGET_NAME).dylib
   fpic := -fPIC
   SHARED := -dynamiclib
   LDFLAGS += $(PTHREAD_FLAGS)
   FLAGS += $(PTHREAD_FLAGS)
ifeq ($(arch),ppc)
   ENDIANNESS_DEFINES := -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN
   OLD_GCC := 1
endif
   OSXVER = `sw_vers -productVersion | cut -d. -f 2`
   OSX_LT_MAVERICKS = `(( $(OSXVER) <= 9)) && echo "YES"`
ifeq ($(OSX_LT_MAVERICKS),"YES")
   fpic += -mmacosx-version-min=10.1
endif

   ifeq ($(CROSS_COMPILE),1)
	TARGET_RULE   = -target $(LIBRETRO_APPLE_PLATFORM) -isysroot $(LIBRETRO_APPLE_ISYSROOT)
	CFLAGS   += $(TARGET_RULE)
	CPPFLAGS += $(TARGET_RULE)
	CXXFLAGS += $(TARGET_RULE)
	LDFLAGS  += $(TARGET_RULE)
   endif

   fpic += -stdlib=libc++

# iOS
else ifneq (,$(findstring ios,$(platform)))

   TARGET := $(TARGET_NAME)_ios.dylib
   fpic := -fPIC
   SHARED := -dynamiclib
   MINVERSION :=
   LDFLAGS += $(PTHREAD_FLAGS)
   FLAGS += $(PTHREAD_FLAGS)

ifeq ($(IOSSDK),)
   IOSSDK := $(shell xcodebuild -version -sdk iphoneos Path)
endif
ifeq ($(platform),ios-arm64)
   CC = cc -arch arm64 -isysroot $(IOSSDK)
   CXX = c++ -arch arm64 -isysroot $(IOSSDK)
else
   CC = cc -arch armv7 -isysroot $(IOSSDK)
   CXX = c++ -arch armv7 -isysroot $(IOSSDK)
endif
ifeq ($(platform),$(filter $(platform),ios9 ios-arm64))
   MINVERSION   = -miphoneos-version-min=8.0
else
   MINVERSION   = -miphoneos-version-min=5.0
endif
   LDFLAGS += $(MINVERSION)
   FLAGS += $(MINVERSION)

# tvOS
else ifeq ($(platform), tvos-arm64)
   TARGET := $(TARGET_NAME)_tvos.dylib
   fpic := -fPIC
   SHARED := -dynamiclib
   LDFLAGS += $(PTHREAD_FLAGS)
   FLAGS += $(PTHREAD_FLAGS)

ifeq ($(IOSSDK),)
   IOSSDK := $(shell xcodebuild -version -sdk appletvos Path)
endif

   CC = cc -arch arm64 -isysroot $(IOSSDK)
   CXX = c++ -arch arm64 -isysroot $(IOSSDK)
   MINVERSION   = -mappletvos-version-min=11.0
   LDFLAGS += $(MINVERSION)
   FLAGS += $(MINVERSION)

else ifeq ($(platform), qnx)
   TARGET := $(TARGET_NAME)_qnx.so
   fpic := -fPIC
   SHARED := -lcpp -lm -shared -Wl,--no-undefined -Wl,--version-script=link.T
   #LDFLAGS += $(PTHREAD_FLAGS)
   #FLAGS += $(PTHREAD_FLAGS)
   CC = qcc -Vgcc_ntoarmv7le
   CXX = QCC -Vgcc_ntoarmv7le_cpp
   AR = QCC -Vgcc_ntoarmv7le
   FLAGS += -D__BLACKBERRY_QNX__ -marm -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=softfp
else ifeq ($(platform), psl1ght)
   TARGET := $(TARGET_NAME)_psl1ght.a
   CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
   CXX = $(PS3DEV)/ppu/bin/ppu-g++$(EXE_EXT)
   AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
   ENDIANNESS_DEFINES := -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN
   FLAGS += -DBYTE_ORDER=BIG_ENDIAN
   STATIC_LINKING = 1
else ifeq ($(platform), psp1)
   TARGET := $(TARGET_NAME)_psp1.a
   CC = psp-gcc$(EXE_EXT)
   CXX = psp-g++$(EXE_EXT)
   AR = psp-ar$(EXE_EXT)
   FLAGS += -DPSP -G0
   STATIC_LINKING = 1
else ifeq ($(platform), xenon)
   TARGET := $(TARGET_NAME)_xenon360.a
   CC = xenon-gcc$(EXE_EXT)
   CXX = xenon-g++$(EXE_EXT)
   AR = xenon-ar$(EXE_EXT)
   ENDIANNESS_DEFINES += -D__LIBXENON__ -m32 -D__ppc__ -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN
   LIBS := $(PTHREAD_FLAGS)
   STATIC_LINKING = 1
else ifeq ($(platform), ngc)
   TARGET := $(TARGET_NAME)_ngc.a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   CXX = $(DEVKITPPC)/bin/powerpc-eabi-g++$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   ENDIANNESS_DEFINES += -DGEKKO -DHW_DOL -mrvl -mcpu=750 -meabi -mhard-float -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN

   EXTRA_INCLUDES := -I$(DEVKITPRO)/libogc/include
   STATIC_LINKING = 1

else ifeq ($(platform), wii)
   TARGET := $(TARGET_NAME)_wii.a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   CXX = $(DEVKITPPC)/bin/powerpc-eabi-g++$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   ENDIANNESS_DEFINES += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN

   EXTRA_INCLUDES := -I$(DEVKITPRO)/libogc/include
   STATIC_LINKING = 1

else ifeq ($(platform), wiiu)
   TARGET := $(TARGET_NAME)_$(platform).a
   CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
   CXX = $(DEVKITPPC)/bin/powerpc-eabi-g++$(EXE_EXT)
   AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
   ENDIANNESS_DEFINES += -DGEKKO -DWIIU -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN

   EXTRA_INCLUDES := -I$(DEVKITPRO)/libogc/include
   STATIC_LINKING = 1
   
# (armv7 a7, hard point, neon based) ### 
# NESC, SNESC, C64 mini 
else ifeq ($(platform), classic_armv7_a7)
	TARGET := $(TARGET_NAME).so #Good consistency here...
	fpic := -fPIC
  SHARED := -shared -Wl,--version-script=link.T -Wl,--no-undefined
	CFLAGS += -Ofast \
	-flto=4 -fwhole-program -fuse-linker-plugin \
	-fdata-sections -ffunction-sections -Wl,--gc-sections \
	-fno-stack-protector -fno-ident -fomit-frame-pointer \
	-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
	-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
	-fmerge-all-constants -fno-math-errno \
	-marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard
	CXXFLAGS += $(CFLAGS)
	CPPFLAGS += $(CFLAGS)
	ASFLAGS += $(CFLAGS)
	HAVE_NEON = 1
	ARCH = arm
	BUILTIN_GPU = neon
	USE_DYNAREC = 1
  FLAGS += $(PTHREAD_FLAGS)
  IS_X86 = 0
	ifeq ($(shell echo `$(CC) -dumpversion` "< 4.9" | bc -l), 1)
	  CFLAGS += -march=armv7-a
	else
	  CFLAGS += -march=armv7ve
	  # If gcc is 5.0 or later
	  ifeq ($(shell echo `$(CC) -dumpversion` ">= 5" | bc -l), 1)
	    LDFLAGS += -static-libgcc -static-libstdc++
	  endif
	endif
#######################################

else ifneq (,$(findstring armv,$(platform)))
   TARGET := $(TARGET_NAME).so
   fpic := -fPIC
   SHARED := -shared -Wl,--no-undefined -Wl,--version-script=link.T
   CC = gcc
   LDFLAGS += $(PTHREAD_FLAGS)
   FLAGS += $(PTHREAD_FLAGS)
   IS_X86 = 0
ifneq (,$(findstring cortexa8,$(platform)))
   FLAGS += -marm -mcpu=cortex-a8
   ASFLAGS += -mcpu=cortex-a8
else ifneq (,$(findstring cortexa9,$(platform)))
   FLAGS += -marm -mcpu=cortex-a9
   ASFLAGS += -mcpu=cortex-a9
endif
   FLAGS += -marm
ifneq (,$(findstring neon,$(platform)))
   FLAGS += -mfpu=neon
   ASFLAGS += -mfpu=neon
   HAVE_NEON = 1
endif
ifneq (,$(findstring softfloat,$(platform)))
   FLAGS += -mfloat-abi=softfp
else ifneq (,$(findstring hardfloat,$(platform)))
   FLAGS += -mfloat-abi=hard
endif
   FLAGS += -DARM
else
   TARGET := $(TARGET_NAME).dll
   CC ?= gcc
   CXX ?= g++
   IS_X86 = 1
   SHARED := -shared -Wl,--no-undefined -Wl,--version-script=link.T
   LDFLAGS += -static-libgcc -static-libstdc++ -lwinmm
endif

ifeq ($(TILED_RENDERING), 1)
FLAGS += -DTILED_RENDERING
endif

include Makefile.common

WARNINGS := -Wall \
	-Wno-sign-compare \
	-Wno-unused-variable \
	-Wno-unused-function \
	-Wno-uninitialized \
	$(NEW_GCC_WARNING_FLAGS) \
	-Wno-strict-aliasing

EXTRA_GCC_FLAGS := -funroll-loops

ifeq ($(NO_GCC),1)
	EXTRA_GCC_FLAGS :=
	WARNINGS :=
else
	EXTRA_GCC_FLAGS := -g
endif


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

all: $(TARGET)

ifeq ($(DEBUG),0)
   FLAGS += -O2 $(EXTRA_GCC_FLAGS)
else
   FLAGS += -O0 -g
endif

LDFLAGS += $(fpic) $(SHARED)
FLAGS += $(fpic) $(NEW_GCC_FLAGS) $(INCFLAGS)

FLAGS += $(ENDIANNESS_DEFINES) -DSIZEOF_DOUBLE=8 $(WARNINGS) -DMEDNAFEN_VERSION=\"0.9.31\" -DPACKAGE=\"mednafen\" -DMEDNAFEN_VERSION_NUMERIC=931 -DMPC_FIXED_POINT $(CORE_DEFINE) -DSTDC_HEADERS -D__STDC_LIMIT_MACROS -D__LIBRETRO__ -D_LOW_ACCURACY_ $(EXTRA_INCLUDES) $(SOUND_DEFINE)

CXXFLAGS += $(FLAGS)
CFLAGS += $(FLAGS)

$(TARGET): $(OBJECTS)
ifeq ($(STATIC_LINKING), 1)
	$(AR) rcs $@ $(OBJECTS)
else
	$(CXX) -o $@ $^ $(LDFLAGS)
endif

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

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

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

install:
	install -D -m 755 $(TARGET) $(DESTDIR)$(libdir)/$(LIBRETRO_DIR)/$(TARGET)

uninstall:
	rm $(DESTDIR)$(libdir)/$(LIBRETRO_DIR)/$(TARGET)

.PHONY: clean install uninstall