Add MSVC2017 target - doesn't work yet

libretro/Makefile

@@ -6,6 +6,15 @@ 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,$1))
+
 CFLAGS += -DSAMEBOY_CORE_VERSION=\"$(VERSION)\"
 
 ifeq ($(platform),)
@@ -134,6 +143,102 @@ else ifeq ($(platform), vita)
    AR = arm-vita-eabi-ar
    CFLAGS += -Wl,-q -Wall -O3 -fno-short-enums -fno-optimize-sibling-calls
 	STATIC_LINKING = 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
+
 else
    CC = gcc
    TARGET := $(TARGET_NAME)_libretro.dll
@@ -157,6 +262,22 @@ include Makefile.common
 
 OBJECTS := $(patsubst %.c,$(CORE_DIR)/build/obj/%_libretro.c.o,$(SOURCES_C))
 
+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
+
 CFLAGS   += -Wall -D__LIBRETRO__ $(fpic) $(INCFLAGS) -std=gnu11 -D_GNU_SOURCE -D_USE_MATH_DEFINES
 
 all: $(TARGET)
@@ -182,15 +303,15 @@ $(TARGET): $(OBJECTS)
 ifeq ($(STATIC_LINKING), 1)
 	$(AR) rcs $@ $(OBJECTS)
 else
-	$(CC) $(fpic) $(SHARED) $(INCFLAGS) -o $@ $(OBJECTS) $(LDFLAGS)
+	$(LD) $(fpic) $(SHARED) $(INCFLAGS) $(LINKOUT)$@ $(OBJECTS) $(LDFLAGS)
 endif
 
 $(CORE_DIR)/build/obj/%_libretro.c.o: %.c
 	-@$(MKDIR) -p $(dir $@)
-	$(CC) -c -o $@ $< $(CFLAGS) $(fpic) -DGB_INTERNAL
+	$(CC) -c $(OBJOUT)$@ $< $(CFLAGS) $(fpic) -DGB_INTERNAL
 
 %.o: %.c
-	$(CC) $(CFLAGS) $(fpic) -c -o $@ $<
+	$(CC) $(CFLAGS) $(fpic) -c $(OBJOUT)$@ $<
 
 clean:
 	rm -f $(OBJECTS) $(TARGET)