STATIC_LINKING=0
AR := ar

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

GIT_VERSION ?= " $(shell git rev-parse --short HEAD || echo unknown)"
ifneq ($(GIT_VERSION)," unknown")
	CFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
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,$(shell uname -a)),)
	system_platform = osx
	arch = intel
ifeq ($(shell uname -p),powerpc)
	arch = ppc
endif
else ifneq ($(findstring MINGW,$(shell uname -a)),)
	system_platform = win
endif


CORE_DIR	+= .
TARGET_NAME := freeintv
SOURCE_DIR := src

ifeq (,$(findstring msvc,$(platform)))
LIBM			= -lm
endif

LIBS += $(LIBM)

ifeq ($(ARCHFLAGS),)
ifeq ($(archs),ppc)
	ARCHFLAGS = -arch ppc -arch ppc64
else
	ARCHFLAGS = -arch i386 -arch x86_64
endif
endif

ifeq ($(platform), osx)
ifndef ($(NOUNIVERSAL))
	CXXFLAGS += $(ARCHFLAGS)
	LFLAGS += $(ARCHFLAGS)
endif
endif

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

ifeq ($(platform), unix)
	EXT ?= so
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
else ifeq ($(platform), linux-portable)
	TARGET := $(TARGET_NAME)_libretro.$(EXT)
	fpic := -fPIC -nostdlib
	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T
	LIBM :=
else ifneq (,$(findstring osx,$(platform)))
	TARGET := $(TARGET_NAME)_libretro.dylib
	fpic := -fPIC
	SHARED := -dynamiclib
else ifneq (,$(findstring ios,$(platform)))
	TARGET := $(TARGET_NAME)_libretro_ios.dylib
	fpic := -fPIC
	SHARED := -dynamiclib

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

DEFINES := -DIOS

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

ifeq ($(platform),$(filter $(platform),ios9 ios-arm64))
	CC	+= -miphoneos-version-min=8.0
	CXXFLAGS += -miphoneos-version-min=8.0
else
	CC	+= -miphoneos-version-min=5.0
	CXXFLAGS += -miphoneos-version-min=5.0
endif

else ifeq ($(platform), tvos-arm64)
	TARGET := $(TARGET_NAME)_libretro_tvos.dylib
	fpic := -fPIC
	SHARED := -dynamiclib

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

DEFINES := -DIOS

# PS3
else ifeq ($(platform), ps3)
	TARGET := $(TARGET_NAME)_libretro_$(platform).a
	CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
	AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
	ENDIANNESS_DEFINES := -DMSB_FIRST
	PLATFORM_DEFINES := -D__CELLOS_LV2__ -D__ppc__
	HAVE_RZLIB := 1
	STATIC_LINKING=1

# PS3 (SNC)
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
	ENDIANNESS_DEFINES := -DMSB_FIRST
	CFLAGS += -DWORDS_BIGENDIAN=1
	GCC_DEFINES :=
	PLATFORM_DEFINES := -D__CELLOS_LV2__ -D__ppc__
	HAVE_RZLIB := 1
	STATIC_LINKING=1

# Lightweight PS3 Homebrew SDK
else ifeq ($(platform), psl1ght)
	TARGET := $(TARGET_NAME)_libretro_$(platform).a
	CC = $(PS3DEV)/ppu/bin/ppu-gcc$(EXE_EXT)
	AR = $(PS3DEV)/ppu/bin/ppu-ar$(EXE_EXT)
	ENDIANNESS_DEFINES := -DMSB_FIRST
	CFLAGS += -DWORDS_BIGENDIAN=1
	GCC_DEFINES :=
	PLATFORM_DEFINES := -D__CELLOS_LV2__ -D__ppc__
	HAVE_RZLIB := 1
	STATIC_LINKING=1

# Xbox 360 (libxenon)
else ifeq ($(platform), xenon)
	TARGET := $(TARGET_NAME)_libretro.a
	CC = xenon-gcc$(EXE_EXT)
	AR = xenon-ar$(EXE_EXT)
	ENDIANNESS_DEFINES := -DMSB_FIRST
	CFLAGS += -D__LIBXENON__ -m32 -D__ppc__
	PLATFORM_DEFINES := -D__LIBXENON__ -D__ppc_
	STATIC_LINKING=1

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

# QNX / BLackberry
else ifneq (,$(findstring qnx,$(platform)))
	TARGET := $(TARGET_NAME)_libretro_qnx.so
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
# Nintendo Wii
else ifeq ($(platform), wii)
	TARGET := $(TARGET_NAME)_libretro_$(platform).a
	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
	ENDIANNESS_DEFINES := -DMSB_FIRST
	PLATFORM_DEFINES += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float
	PLATFORM_DEFINES += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
	HAVE_RZLIB := 1
	STATIC_LINKING=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	+=	-D__SWITCH__ -DHAVE_LIBNX -march=armv8-a -mtune=cortex-a57 -mtp=soft
    CXXFLAGS := $(ASFLAGS) $(CFLAGS) -fno-rtti -std=gnu++11
    CFLAGS += -std=gnu11
    STATIC_LINKING = 1

# Nintendo WiiU
else ifeq ($(platform), 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 := -DMSB_FIRST
	PLATFORM_DEFINES += -DGEKKO -DWIIU -DHW_RVL -mcpu=750 -meabi -mhard-float
	PLATFORM_DEFINES += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
	HAVE_RZLIB := 1
	STATIC_LINKING=1

# Nintendo Switch (libtransistor)
else ifeq ($(platform), switch)
	EXT=a
	TARGET := $(TARGET_NAME)_libretro_$(platform).$(EXT)
	include $(LIBTRANSISTOR_HOME)/libtransistor.mk
	HAVE_RZLIB := 1
	STATIC_LINKING=1
  
# Classic Platforms ####################
# Platform affix = classic_<ISA>_<µARCH>
# Help at https://modmyclassic.com/comp
	
# (armv7 a7, hard point, neon based) ### 
# NESC, SNESC, C64 mini 
else ifeq ($(platform), classic_armv7_a7)
	TARGET := $(TARGET_NAME)_libretro.so
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
	CFLAGS += -Ofast \
	-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
	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
#######################################
	
# 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)
	CFLAGS += -DARM11 -D_3DS
	CFLAGS += -march=armv6k -mtune=mpcore -mfloat-abi=hard
	CFLAGS += -Wall -mword-relocations
	CFLAGS += -fomit-frame-pointer -ffast-math
	HAVE_RZLIB := 1
	DISABLE_ERROR_LOGGING := 1
	ARM = 1
	STATIC_LINKING=1
	
# Emscripten
else ifeq ($(platform), emscripten)
	TARGET := $(TARGET_NAME)_libretro_$(platform).bc
	AR = emar
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
	STATIC_LINKING=1

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

# Playstation Vita
else ifeq ($(platform), vita)
	TARGET := $(TARGET_NAME)_libretro_$(platform).a
	CC = arm-vita-eabi-gcc
	AR = arm-vita-eabi-ar
	CXXFLAGS += -Wl,-q -Wall -O3
	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
	fpic := -fPIC
	SHARED := -shared -Wl,--version-script=link.T -Wl,-no-undefined
	
	DISABLE_ERROR_LOGGING := 1
	CFLAGS += -march=mips32 -mtune=mips32r2 -mhard-float
	
# Windows MSVC 2010 x64
else ifeq ($(platform), windows_msvc2010_x64)
	CC  = cl.exe
	CXX = cl.exe

PATH := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/bin/amd64"):$(PATH)
PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../IDE")
INCLUDE := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/include")
LIB := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/lib/amd64")
BIN := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/bin")

WindowsSdkDir := $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.0A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')lib/x64
WindowsSdkDir ?= $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.1A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')lib/x64
WindowsSdkDirInc := $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.0A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')Include
WindowsSdkDirInc ?= $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.1A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')Include

	INCFLAGS_PLATFORM = -I"$(WindowsSdkDirInc)"
	export INCLUDE := $(INCLUDE)
	export LIB := $(LIB);$(WindowsSdkDir)
	TARGET := $(TARGET_NAME)_libretro.dll
	PSS_STYLE :=2
	LDFLAGS += -DLL
	LIBS =

# Windows MSVC 2010 x86
else ifeq ($(platform), windows_msvc2010_x86)
	CC  = cl.exe
	CXX = cl.exe

	PATH := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/bin"):$(PATH)
	PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../IDE")
	LIB := $(shell IFS=$$'\n'; cygpath -w "$(VS100COMNTOOLS)../../VC/lib")
	INCLUDE := $(shell IFS=$$'\n'; cygpath "$(VS100COMNTOOLS)../../VC/include")

	WindowsSdkDir := $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.0A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')lib
	WindowsSdkDir ?= $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.1A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')lib

	WindowsSdkDirInc := $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.0A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')Include
	WindowsSdkDirInc ?= $(shell reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v7.1A" -v "InstallationFolder" | grep -o '[A-Z]:\\.*')Include

	INCFLAGS_PLATFORM = -I"$(WindowsSdkDirInc)"
	export INCLUDE := $(INCLUDE)
	export LIB := $(LIB);$(WindowsSdkDir)
	TARGET := $(TARGET_NAME)_libretro.dll
	PSS_STYLE :=2
	LDFLAGS += -DLL
	LIBS =

# Windows MSVC 2005 x86
else ifeq ($(platform), windows_msvc2005_x86)
	CC  = cl.exe
	CXX = cl.exe

	PATH := $(shell IFS=$$'\n'; cygpath "$(VS80COMNTOOLS)../../VC/bin"):$(PATH)
	PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VS80COMNTOOLS)../IDE")
	INCLUDE := $(shell IFS=$$'\n'; cygpath "$(VS80COMNTOOLS)../../VC/include")
	LIB := $(shell IFS=$$'\n'; cygpath -w "$(VS80COMNTOOLS)../../VC/lib")
	BIN := $(shell IFS=$$'\n'; cygpath "$(VS80COMNTOOLS)../../VC/bin")

	WindowsSdkDir := $(INETSDK)

	export INCLUDE := $(INCLUDE);$(INETSDK)/Include;src/libretro/libretro-common/include/compat/msvc
	export LIB := $(LIB);$(WindowsSdkDir);$(INETSDK)/Lib
	TARGET := $(TARGET_NAME)_libretro.dll
	PSS_STYLE :=2
	LDFLAGS += -DLL
	CFLAGS += -D_CRT_SECURE_NO_DEPRECATE
	LIBS =
	
# Windows MSVC 2003 Xbox 1
else ifeq ($(platform), xbox1_msvc2003)
	TARGET := $(TARGET_NAME)_libretro_xdk1.lib
	MSVCBINDIRPREFIX = $(XDK)/xbox/bin/vc71
	CC  = "$(MSVCBINDIRPREFIX)/CL.exe"
	CXX  = "$(MSVCBINDIRPREFIX)/CL.exe"
	LD   = "$(MSVCBINDIRPREFIX)/lib.exe"

	export INCLUDE := $(XDK)/xbox/include
	export LIB := $(XDK)/xbox/lib
	PSS_STYLE :=2
	CFLAGS   += -D_XBOX -D_XBOX1
	CXXFLAGS += -D_XBOX -D_XBOX1
	STATIC_LINKING=1

# Windows MSVC 2003 x86
else ifeq ($(platform), windows_msvc2003_x86)
	CC  = cl.exe
	CXX = cl.exe

PATH := $(shell IFS=$$'\n'; cygpath "$(VS71COMNTOOLS)../../Vc7/bin"):$(PATH)
PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VS71COMNTOOLS)../IDE")
INCLUDE := $(shell IFS=$$'\n'; cygpath "$(VS71COMNTOOLS)../../Vc7/include")
LIB := $(shell IFS=$$'\n'; cygpath -w "$(VS71COMNTOOLS)../../Vc7/lib")
BIN := $(shell IFS=$$'\n'; cygpath "$(VS71COMNTOOLS)../../Vc7/bin")

WindowsSdkDir := $(INETSDK)

export INCLUDE := $(INCLUDE);$(INETSDK)/Include;libretro-common/include/compat/msvc
export LIB := $(LIB);$(WindowsSdkDir);$(INETSDK)/Lib
TARGET := $(TARGET_NAME)_libretro.dll
PSS_STYLE :=2
LDFLAGS += -DLL
CFLAGS += -D_CRT_SECURE_NO_DEPRECATE
WINDOWS_VERSION=1
	
# Windows MSVC 2010 Xbox 360
else ifeq ($(platform), xbox360_msvc2010)
	TARGET := $(TARGET_NAME)_libretro_xdk360.lib
	MSVCBINDIRPREFIX = $(XEDK)/bin/win32
	CC  = "$(MSVCBINDIRPREFIX)/cl.exe"
	CXX  = "$(MSVCBINDIRPREFIX)/cl.exe"
	LD   = "$(MSVCBINDIRPREFIX)/lib.exe"

	export INCLUDE := $(XEDK)/include/xbox
	export LIB := $(XEDK)/lib/xbox
	PSS_STYLE :=2
	CFLAGS   += -D_XBOX -D_XBOX360
	CXXFLAGS += -D_XBOX -D_XBOX360
	STATIC_LINKING=1
	BIGENDIAN = 1

# Windows MSVC 2017 all architectures
else ifneq (,$(findstring windows_msvc2017,$(platform)))

    NO_GCC := 1
    CFLAGS += -DNOMINMAX
    CXXFLAGS += -DNOMINMAX
    WINDOWS_VERSION = 1

	PlatformSuffix = $(subst windows_msvc2017_,,$(platform))
	ifneq (,$(findstring desktop,$(PlatformSuffix)))
		WinPartition = desktop
		MSVC2017CompileFlags = -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -FS
		LDFLAGS += -MANIFEST -LTCG:incremental -NXCOMPAT -DYNAMICBASE -DEBUG -OPT:REF -INCREMENTAL:NO -SUBSYSTEM:WINDOWS -MANIFESTUAC:"level='asInvoker' uiAccess='false'" -OPT:ICF -ERRORREPORT:PROMPT -NOLOGO -TLBID:1
		LIBS += kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib
	else ifneq (,$(findstring uwp,$(PlatformSuffix)))
		WinPartition = uwp
		MSVC2017CompileFlags = -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_WINDLL -D_UNICODE -DUNICODE -D__WRL_NO_DEFAULT_LIB__ -EHsc -FS
		LDFLAGS += -APPCONTAINER -NXCOMPAT -DYNAMICBASE -MANIFEST:NO -LTCG -OPT:REF -SUBSYSTEM:CONSOLE -MANIFESTUAC:NO -OPT:ICF -ERRORREPORT:PROMPT -NOLOGO -TLBID:1 -DEBUG:FULL -WINMD:NO
		LIBS += WindowsApp.lib
	endif

	CFLAGS += $(MSVC2017CompileFlags)
	CXXFLAGS += $(MSVC2017CompileFlags)

	TargetArchMoniker = $(subst $(WinPartition)_,,$(PlatformSuffix))

	CC  = cl.exe
	CXX = cl.exe
	LD = link.exe

	reg_query = $(call filter_out2,$(subst $2,,$(shell reg query "$2" -v "$1" 2>nul)))
	fix_path = $(subst $(SPACE),\ ,$(subst \,/,$1))

	ProgramFiles86w := $(shell cmd //c "echo %PROGRAMFILES(x86)%")
	ProgramFiles86 := $(shell cygpath "$(ProgramFiles86w)")

	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v10.0)
	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_CURRENT_USER\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v10.0)
	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0)
	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_CURRENT_USER\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0)
	WindowsSdkDir := $(WindowsSdkDir)

	WindowsSDKVersion ?= $(firstword $(foreach folder,$(subst $(subst \,/,$(WindowsSdkDir)Include/),,$(wildcard $(call fix_path,$(WindowsSdkDir)Include\*))),$(if $(wildcard $(call fix_path,$(WindowsSdkDir)Include/$(folder)/um/Windows.h)),$(folder),)))$(BACKSLASH)
	WindowsSDKVersion := $(WindowsSDKVersion)

	VsInstallBuildTools = $(ProgramFiles86)/Microsoft Visual Studio/2017/BuildTools
	VsInstallEnterprise = $(ProgramFiles86)/Microsoft Visual Studio/2017/Enterprise
	VsInstallProfessional = $(ProgramFiles86)/Microsoft Visual Studio/2017/Professional
	VsInstallCommunity = $(ProgramFiles86)/Microsoft Visual Studio/2017/Community

	VsInstallRoot ?= $(shell if [ -d "$(VsInstallBuildTools)" ]; then echo "$(VsInstallBuildTools)"; fi)
	ifeq ($(VsInstallRoot), )
		VsInstallRoot = $(shell if [ -d "$(VsInstallEnterprise)" ]; then echo "$(VsInstallEnterprise)"; fi)
	endif
	ifeq ($(VsInstallRoot), )
		VsInstallRoot = $(shell if [ -d "$(VsInstallProfessional)" ]; then echo "$(VsInstallProfessional)"; fi)
	endif
	ifeq ($(VsInstallRoot), )
		VsInstallRoot = $(shell if [ -d "$(VsInstallCommunity)" ]; then echo "$(VsInstallCommunity)"; fi)
	endif
	VsInstallRoot := $(VsInstallRoot)

	VcCompilerToolsVer := $(shell cat "$(VsInstallRoot)/VC/Auxiliary/Build/Microsoft.VCToolsVersion.default.txt" | grep -o '[0-9\.]*')
	VcCompilerToolsDir := $(VsInstallRoot)/VC/Tools/MSVC/$(VcCompilerToolsVer)

	WindowsSDKSharedIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\shared")
	WindowsSDKUCRTIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\ucrt")
	WindowsSDKUMIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\um")
	WindowsSDKUCRTLibDir := $(shell cygpath -w "$(WindowsSdkDir)\Lib\$(WindowsSDKVersion)\ucrt\$(TargetArchMoniker)")
	WindowsSDKUMLibDir := $(shell cygpath -w "$(WindowsSdkDir)\Lib\$(WindowsSDKVersion)\um\$(TargetArchMoniker)")

	# For some reason the HostX86 compiler doesn't like compiling for x64
	# ("no such file" opening a shared library), and vice-versa.
	# Work around it for now by using the strictly x86 compiler for x86, and x64 for x64.
	# NOTE: What about ARM?
	ifneq (,$(findstring x64,$(TargetArchMoniker)))
		VCCompilerToolsBinDir := $(VcCompilerToolsDir)\bin\HostX64
	else
		VCCompilerToolsBinDir := $(VcCompilerToolsDir)\bin\HostX86
	endif

	PATH := $(shell IFS=$$'\n'; cygpath "$(VCCompilerToolsBinDir)/$(TargetArchMoniker)"):$(PATH)
	PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VsInstallRoot)/Common7/IDE")
	INCLUDE := $(shell IFS=$$'\n'; cygpath -w "$(VcCompilerToolsDir)/include")
	LIB := $(shell IFS=$$'\n'; cygpath -w "$(VcCompilerToolsDir)/lib/$(TargetArchMoniker)")
	ifneq (,$(findstring uwp,$(PlatformSuffix)))
		LIB := $(LIB);$(shell IFS=$$'\n'; cygpath -w "$(LIB)/store")
	endif
    
	export INCLUDE := $(INCLUDE);$(WindowsSDKSharedIncludeDir);$(WindowsSDKUCRTIncludeDir);$(WindowsSDKUMIncludeDir)
	export LIB := $(LIB);$(WindowsSDKUCRTLibDir);$(WindowsSDKUMLibDir)
	TARGET := $(TARGET_NAME)_libretro.dll
	PSS_STYLE :=2
	LDFLAGS += -DLL

# Current Windows builds via mingw/gcc
else
	TARGET := $(TARGET_NAME)_libretro.dll
	CC ?= gcc
	SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=$(CORE_DIR)/link.T -Wl,--no-undefined
	CFLAGS += -D__WIN32__ -Wno-missing-field-initializers
endif

CFLAGS   += $(INCFLAGS)
CXXFLAGS += $(INCFLAGS)
LDFLAGS  += $(LIBM)

ifneq ($(platform), sncps3)
	ifeq (,$(findstring msvc,$(platform)))
		CFLAGS += -Wall -Wno-sign-compare -Wunused \
		-Wpointer-arith -Wbad-function-cast -Wcast-align -Waggregate-return \
		-Wshadow -Wstrict-prototypes \
		-Wformat-security -Wwrite-strings \
		-Wdisabled-optimization
	endif
endif

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

ifeq (,$(findstring msvc,$(platform)))
	CFLAGS += -fomit-frame-pointer -fstrict-aliasing
endif

ifeq ($(DEBUG), 1)
	CXXFLAGS += -O0 -g
else
	CXXFLAGS += -O3
endif

include Makefile.common

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

CFLAGS	+= -Wall -D__LIBRETRO__ $(INCLUDES) $(fpic)
CXXFLAGS += -Wall -D__LIBRETRO__ $(INCLUDES) $(fpic)

OBJOUT   = -o
LINKOUT  = -o 

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

INCFLAGS += $(INCFLAGS_PLATFORM)

all: $(TARGET)

$(TARGET): $(OBJECTS)
ifeq ($(STATIC_LINKING),1)
ifneq (,$(findstring msvc,$(platform)))
	$(LD) $(LINKOUT)$@ $(OBJECTS)
else
	$(AR) rcs $@ $(OBJECTS)
endif
else
	$(LD) $(LINKOUT)$@ $(SHARED) $(OBJECTS) $(LDFLAGS) $(LIBS)
endif

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

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