DEBUG = 0
GIT_VERSION := " $(shell git rev-parse --short HEAD || echo unknown)"
STATIC_LINKING = 0
STATIC_LINKING_LINK = 0

CORE_DIR := .
BUILD_DIR = build
OBJOUT = -o 

ifeq ($(platform),linux-portable_x86)
include $(BUILD_DIR)/Makefile.linux-portable_x86
else ifeq ($(platform),linux-portable_x86_64)
include $(BUILD_DIR)/Makefile.linux-portable_x86_64
else ifeq ($(platform),linux_x86)
include $(BUILD_DIR)/Makefile.linux_x86
else ifeq ($(platform),linux_x86_64)
include $(BUILD_DIR)/Makefile.linux_x86_64
else ifeq ($(platform),osx_x86)
include $(BUILD_DIR)/Makefile.osx_x86
else ifeq ($(platform),osx_x86_64)
include $(BUILD_DIR)/Makefile.osx_x86_64
else ifeq ($(platform),mingw_x86)
include $(BUILD_DIR)/Makefile.mingw_x86
else ifeq ($(platform),mingw_x86_64)
include $(BUILD_DIR)/Makefile.mingw_x86_64
else ifeq ($(platform),ps3_ppc)
include $(BUILD_DIR)/Makefile.ps3_ppc
else ifeq ($(platform),vita_arm)
include $(BUILD_DIR)/Makefile.vita_arm
else ifeq ($(platform),wii_ppc)
include $(BUILD_DIR)/Makefile.wii_ppc
else ifeq ($(platform),windows_x86)
include $(BUILD_DIR)/Makefile.windows_x86
else ifeq ($(platform),windows_msvc2003_x86)
include $(BUILD_DIR)/Makefile.windows_msvc2003_x86
else ifeq ($(platform),windows_msvc2005_x86)
include $(BUILD_DIR)/Makefile.windows_msvc2005_x86
else ifeq ($(platform),windows_msvc2010_x86)
include $(BUILD_DIR)/Makefile.windows_msvc2010_x86
else ifeq ($(platform),windows_msvc2010_x64)
include $(BUILD_DIR)/Makefile.windows_msvc2010_x64
else ifeq ($(platform),windows_msvc2015_x64)
include $(BUILD_DIR)/Makefile.windows_msvc2015_x64
else ifeq ($(platform),windows_x86_64)
include $(BUILD_DIR)/Makefile.windows_x86_64
else

ifeq ($(platform),)
ifeq ($(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
else
	platform = unix
endif
endif

SPACE :=
SPACE := $(SPACE) $(SPACE)
BACKSLASH :=
BACKSLASH := \$(BACKSLASH)
filter_out1 = $(filter-out $(firstword $1),$1)
filter_out2 = $(call filter_out1,$(call filter_out1,$1))
unixpath = $(subst \,/,$1)
unixcygpath = /$(subst :,,$(call unixpath,$1))

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

#CC		= gcc
TARGET_NAME	:= mu
LIBM		= -lm

ifeq ($(STATIC_LINKING),1)
EXT = a

ifeq ($(platform), unix)
PLAT = _unix
STATIC_LINKING = 1
STATIC_LINKING_LINK = 1
endif
endif

# UNIX
ifeq ($(platform), unix)
	EXT    ?= so
	TARGET := $(TARGET_NAME)_libretro$(PLAT).$(EXT)
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T
ifneq ($(findstring Haiku,$(shell uname -a)),)
		LIBM :=
endif

# Linux (portable library)
else ifeq ($(platform), linux-portable)
	EXT    ?= so
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	fpic := -fPIC -nostdlib
	SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T
	LIBM :=

# OS X
else ifeq ($(platform), osx)
	EXT    ?= dylib
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	fpic := -fPIC
ifeq ($(arch),ppc)
		CFLAGS += -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
endif
	OSXVER = $(shell sw_vers -productVersion | cut -d. -f 2)
	OSX_GT_MOJAVE = $(shell (( $(OSXVER) >= 14)) && echo "YES")
ifneq ($(OSX_GT_MOJAVE),YES)
	#this breaks compiling on Mac OS Mojave
	fpic += -mmacosx-version-min=10.1
endif
	SHARED := -dynamiclib

# iOS
else ifneq (,$(findstring ios,$(platform)))
	EXT    ?= dylib
	TARGET := $(TARGET_NAME)_libretro_ios.$(EXT)
	fpic := -fPIC
	SHARED := -dynamiclib

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

ifeq ($(platform), ios-arm64)
	CC = cc -arch arm64 -isysroot $(IOSSDK)
else
	CC = cc -arch armv7 -isysroot $(IOSSDK)
endif

	LD = armv7-apple-darwin11-ld
	CFLAGS += -DIOS
ifeq ($(platform),$(filter $(platform),ios9 ios-arm64))
CC     += -miphoneos-version-min=8.0
CFLAGS += -miphoneos-version-min=8.0
else
CC     += -miphoneos-version-min=5.0
CFLAGS += -miphoneos-version-min=5.0
endif

# Theos iOS
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

# QNX
else ifeq ($(platform), qnx)
	EXT    ?= so
	TARGET := $(TARGET_NAME)_libretro_qnx.$(EXT)
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T
	CC = qcc -Vgcc_ntoarmv7le
	AR = qcc -Vgcc_ntoarmv7le
	CFLAGS += -D__BLACKBERRY_QNX__

# PS3
else ifeq ($(platform), ps3)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_ps3.$(EXT)
	CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
	AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
	CFLAGS += -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# PS3 (SNC)
else ifeq ($(platform), sncps3)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_ps3.$(EXT)
	CC = $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
	AR = $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
	CFLAGS += -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Lightweight PS3 Homebrew SDK
else ifeq ($(platform), psl1ght)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
	AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
	CFLAGS += -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

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

# DOS
else ifeq ($(platform), dos)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = i686-pc-msdosdjgpp-gcc
	AR = i686-pc-msdosdjgpp-ar
	CFLAGS += -march=i386
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Vita
else ifeq ($(platform), vita)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = arm-vita-eabi-gcc$(EXE_EXT)
	AR = arm-vita-eabi-ar$(EXE_EXT)
	CFLAGS += -DVITA
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

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

# Raspberry Pi 2
else ifeq ($(platform), rpi2)
        TARGET := $(TARGET_NAME)_libretro.so
        fpic := -fPIC
        SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T -Wl,--no-undefined
        CFLAGS += -DARM
        CFLAGS += -marm -mcpu=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -funsafe-math-optimizations
        CFLAGS += -fomit-frame-pointer -ffast-math
        HAVE_NEON = 1

# Raspberry Pi 3
else ifeq ($(platform), rpi3)
        TARGET := $(TARGET_NAME)_libretro.so
        fpic := -fPIC
        SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T -Wl,--no-undefined
        CFLAGS += -DARM
        CFLAGS += -marm -mcpu=cortex-a53 -mfpu=neon-fp-armv8 -mfloat-abi=hard -funsafe-math-optimizations
        CFLAGS += -fomit-frame-pointer -ffast-math
        HAVE_NEON = 1

# Classic Platforms ####################
# Platform affix = classic_<ISA>_<uARCH>
# Help at https://modmyclassic.com/comp
# (armv7 a7, hard point, neon based) ### 
# NESC, SNESC, C64 mini 
else ifeq ($(platform), classic_armv7_a7)
	TARGET := $(TARGET_NAME)_libretro.so
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/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 += $(CFLAGS)
	HAVE_NEON = 1
	ARCH = arm
	ifeq ($(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

# Xbox 360
else ifeq ($(platform), xenon)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_xenon360.$(EXT)
	CC = xenon-gcc$(EXE_EXT)
	AR = xenon-ar$(EXE_EXT)
	CFLAGS += -D__LIBXENON__ -m32 -D__ppc__
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Nintendo Game Cube
else ifeq ($(platform), ngc)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
	CFLAGS += -DGEKKO -DHW_DOL -mrvl -mcpu=750 -meabi -mhard-float -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	CFLAGS += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Nintendo Wii
else ifeq ($(platform), wii)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
	CFLAGS += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	CFLAGS += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Nintendo WiiU
else ifeq ($(platform), wiiu)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
	CFLAGS += -DGEKKO -DHW_RVL -mwup -mcpu=750 -meabi -mhard-float -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1
	CFLAGS += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# ARM
else ifneq (,$(findstring armv,$(platform)))
	EXT    ?= so
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	SHARED := -shared -Wl,--no-undefined
	fpic := -fPIC
	CC   ?= gcc
	ifneq (,$(findstring cortexa8,$(platform)))
		CFLAGS += -marm -mcpu=cortex-a8
		ASFLAGS += -mcpu=cortex-a8
	else ifneq (,$(findstring cortexa9,$(platform)))
		CFLAGS += -marm -mcpu=cortex-a9
		ASFLAGS += -mcpu=cortex-a9
	endif
	CFLAGS += -marm
	ifneq (,$(findstring neon,$(platform)))
		CFLAGS += -mfpu=neon
		ASFLAGS += -mfpu=neon
		HAVE_NEON = 1
	endif
	ifneq (,$(findstring softfloat,$(platform)))
		CFLAGS += -mfloat-abi=softfp
		ASFLAGS += -mfloat-abi=softfp
	else ifneq (,$(findstring hardfloat,$(platform)))
		CFLAGS += -mfloat-abi=hard
		ASFLAGS += -mfloat-abi=hard
	endif
	CFLAGS += -DARM

# Emscripten
else ifeq ($(platform), emscripten)
	TARGET := $(TARGET_NAME)_libretro_emscripten.bc
	STATIC_LINKING = 1

# GCW0
else ifeq ($(platform), gcw0)
	TARGET := $(TARGET_NAME)_libretro.so
	CC = /opt/gcw0-toolchain/usr/bin/mipsel-linux-gcc
	CXX = /opt/gcw0-toolchain/usr/bin/mipsel-linux-g++
	AR = /opt/gcw0-toolchain/usr/bin/mipsel-linux-ar
	SHARED := -shared -Wl,--version-script=$(BUILD_DIR)/link.T
	fpic := -fPIC
	CFLAGS += $(PTHREAD_FLAGS)
	CFLAGS += -ffast-math -march=mips32 -mtune=mips32r2 -mhard-float

else ifeq ($(platform), msvc)
	OBJOUT = -Fo

# Nintendo Switch (libtransistor)
else ifeq ($(platform), switch)
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	include $(LIBTRANSISTOR_HOME)/libtransistor.mk
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Nintendo Switch (libnx)
else ifeq ($(platform), libnx)
	include $(DEVKITPRO)/libnx/switch_rules
	EXT = a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	DEFINES :=  -DSWITCH=1 -U__linux__ -U__linux -DRARCH_INTERNAL
	CFLAGS :=   $(DEFINES) -g \
				-O3 \
				-fPIE -I$(LIBNX)/include/ -ffunction-sections -fdata-sections -ftls-model=local-exec -Wl,--allow-multiple-definition -specs=$(LIBNX)/switch.specs
	CFLAGS += $(INCDIRS)
	CFLAGS += $(INCLUDE)  -D__SWITCH__ -DARM -march=armv8-a -mtune=cortex-a57 -mtp=soft
	CXXFLAGS := $(ASFLAGS) $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
	CFLAGS += -std=gnu11
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Windows MSVC 2003 Xbox 1
else ifeq ($(platform), xbox1_msvc2003)
	TARGET := $(TARGET_NAME)_libretro_xdk1.lib
	CC   = CL.exe
	CXX  = CL.exe
	LD   = lib.exe

	export INCLUDE := $(XDK)\xbox\include
	export LIB := $(XDK)\xbox\lib
	PATH := $(call unixcygpath,$(XDK)/xbox/bin/vc71):$(PATH)

	PSS_STYLE :=2
	CFLAGS   += -D_XBOX -D_XBOX1
	CXXFLAGS += -D_XBOX -D_XBOX1
	STATIC_LINKING = 1
	STATIC_LINKING_LINK = 1

# Windows
else
	EXT    ?= dll
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	CC = gcc
	SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=$(BUILD_DIR)/link.T
	CFLAGS += -D__WIN32__ -D__WIN32_LIBRETRO__
endif

ifeq ($(STATIC_LINKING), 1)
SHARED=
fpic=
endif

ifeq ($(DEBUG), 1)
	CFLAGS += -O0 -g
else
	CFLAGS += -O2 -DNDEBUG
	ifneq ($(GIT_VERSION), " unknown")
		CFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
	endif
endif

include $(BUILD_DIR)/Makefile.common

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

DEFINES = $(COREDEFINES)

ifeq ($(STATIC_LINKING), 1)
	DEFINES += -DSTATIC_LINKING
endif

ifeq ($(platform), sncps3)
	WARNINGS_DEFINES =
	CODE_DEFINES =
else ifeq ($(platform), ios)
	WARNINGS_DEFINES =
	CODE_DEFINES =
else ifneq (,$(findstring msvc,$(platform)))
	WARNING_DEFINES =
	CODE_DEFINES =
else
	WARNINGS_DEFINES = -Wall -W -Wno-unused-parameter -Wno-sign-compare -Wno-uninitialized
	CODE_DEFINES = -fomit-frame-pointer
endif

COMMON_DEFINES += $(CODE_DEFINES) $(WARNINGS_DEFINES) $(fpic)

CFLAGS += $(DEFINES) $(COMMON_DEFINES)

ifneq (,$(findstring msvc,$(platform)))
	OBJOUT = -Fo
	LINKOUT = -out:
ifeq ($(STATIC_LINKING),1)
	LD ?= lib.exe
	STATIC_LINKING=0
else
	LD = link.exe
endif
else
	OBJOUT   = -o 
	LINKOUT  = -o 
	LD = $(CC)
endif

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

$(TARGET): $(OBJECTS)
	@echo "** BUILDING $(TARGET) FOR PLATFORM $(platform) **"
ifeq ($(platform), emscripten)
	$(CC) $(CFLAGS) $(OBJOUT)$@ $^
else ifeq ($(STATIC_LINKING_LINK), 1)
ifneq (,$(findstring msvc,$(platform)))
	$(LD) $(LINKOUT)$@ $(OBJECTS)
else
	$(AR) rcs $@ $(OBJECTS)
endif
else
	$(CC) $(fpic) $(SHARED) $(INCFLAGS) $(LDFLAGS) $(OBJOUT)$@ $(OBJECTS) $(LIBM)
endif

	@echo "** BUILD SUCCESSFUL! GG NO RE **"

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

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

clean-objs:
	rm -rf $(OBJECTS)

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

.PHONY: clean
endif

endif