MSVC: Add support for ARM64 architecture

Visual Studio 15.4 adds support for this architecture.

Fixes: #17213

4 files changed, 17 insertions, 4 deletions

diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake
index f11059f..0a93e5f 100644
--- a/Modules/CMakeDetermineCompilerId.cmake
+++ b/Modules/CMakeDetermineCompilerId.cmake
@@ -220,7 +220,9 @@ Id flags: ${testflags} ${CMAKE_${lang}_COMPILER_ID_FLAGS_ALWAYS}
     if(CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION)
       set(id_WindowsTargetPlatformVersion "<WindowsTargetPlatformVersion>${CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION}</WindowsTargetPlatformVersion>")
     endif()
-    if(id_platform STREQUAL ARM)
+    if(id_platform STREQUAL ARM64)
+      set(id_WindowsSDKDesktopARMSupport "<WindowsSDKDesktopARM64Support>true</WindowsSDKDesktopARM64Support>")
+    elseif(id_platform STREQUAL ARM)
       set(id_WindowsSDKDesktopARMSupport "<WindowsSDKDesktopARMSupport>true</WindowsSDKDesktopARMSupport>")
     else()
       set(id_WindowsSDKDesktopARMSupport "")
diff --git a/Modules/CMakeGenericSystem.cmake b/Modules/CMakeGenericSystem.cmake
index cd05237..9c38f6e 100644
--- a/Modules/CMakeGenericSystem.cmake
+++ b/Modules/CMakeGenericSystem.cmake
@@ -76,6 +76,8 @@ function(GetDefaultWindowsPrefixBase var)
   #
   if("${CMAKE_GENERATOR}" MATCHES "(Win64|IA64)")
     set(arch_hint "x64")
+  elseif("${CMAKE_GENERATOR_PLATFORM}" MATCHES "ARM64")
+    set(arch_hint "ARM64")
   elseif("${CMAKE_GENERATOR}" MATCHES "ARM")
     set(arch_hint "ARM")
   elseif("${CMAKE_SIZEOF_VOID_P}" STREQUAL "8")
diff --git a/Modules/CMakePlatformId.h.in b/Modules/CMakePlatformId.h.in
index c7065b2..a6a9c0a 100644
--- a/Modules/CMakePlatformId.h.in
+++ b/Modules/CMakePlatformId.h.in
@@ -114,6 +114,9 @@
 # elif defined(_M_IX86)
 #  define ARCHITECTURE_ID "X86"
 
+# elif defined(_M_ARM64)
+#  define ARCHITECTURE_ID "ARM64"
+
 # elif defined(_M_ARM)
 #  if _M_ARM == 4
 #   define ARCHITECTURE_ID "ARMV4I"
diff --git a/Modules/Platform/Windows-MSVC.cmake b/Modules/Platform/Windows-MSVC.cmake
index cfe6e1c..f3f0fe2 100644
--- a/Modules/Platform/Windows-MSVC.cmake
+++ b/Modules/Platform/Windows-MSVC.cmake
@@ -122,7 +122,9 @@ set(CMAKE_BUILD_TYPE_INIT Debug)
 # Compute an architecture family from the architecture id.
 foreach(lang C CXX)
   set(_MSVC_${lang}_ARCHITECTURE_FAMILY "${MSVC_${lang}_ARCHITECTURE_ID}")
-  if(_MSVC_${lang}_ARCHITECTURE_FAMILY MATCHES "^ARM")
+  if(_MSVC_${lang}_ARCHITECTURE_FAMILY MATCHES "^ARM64")
+    set(_MSVC_${lang}_ARCHITECTURE_FAMILY "ARM64")
+  elseif(_MSVC_${lang}_ARCHITECTURE_FAMILY MATCHES "^ARM")
     set(_MSVC_${lang}_ARCHITECTURE_FAMILY "ARM")
   elseif(_MSVC_${lang}_ARCHITECTURE_FAMILY MATCHES "^SH")
     set(_MSVC_${lang}_ARCHITECTURE_FAMILY "SHx")
@@ -175,7 +177,7 @@ elseif(WINDOWS_PHONE OR WINDOWS_STORE)
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "WindowsApp.lib")
   elseif(WINDOWS_PHONE)
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "WindowsPhoneCore.lib RuntimeObject.lib PhoneAppModelHost.lib")
-  elseif(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM")
+  elseif(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM64" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM64")
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib")
   else()
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib")
@@ -183,7 +185,7 @@ elseif(WINDOWS_PHONE OR WINDOWS_STORE)
 else()
   set(_PLATFORM_DEFINES "/DWIN32")
 
-  if(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM")
+  if(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM" OR _MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM64" OR _MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM64")
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib")
   elseif(MSVC_VERSION GREATER 1310)
     if(CMAKE_VS_PLATFORM_TOOLSET MATCHES "(v[0-9]+_clang_.*|LLVM-vs[0-9]+.*)")
@@ -215,6 +217,8 @@ set (CMAKE_LINK_DEF_FILE_FLAG "/DEF:")
 if(MSVC_C_ARCHITECTURE_ID)
   if(MSVC_C_ARCHITECTURE_ID MATCHES "^ARMV.I")
     set(_MACHINE_ARCH_FLAG "/machine:THUMB")
+  elseif(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM64")
+    set(_MACHINE_ARCH_FLAG "/machine:ARM64")
   elseif(_MSVC_C_ARCHITECTURE_FAMILY STREQUAL "ARM")
     set(_MACHINE_ARCH_FLAG "/machine:ARM")
   else()
@@ -223,6 +227,8 @@ if(MSVC_C_ARCHITECTURE_ID)
 elseif(MSVC_CXX_ARCHITECTURE_ID)
   if(MSVC_CXX_ARCHITECTURE_ID MATCHES "^ARMV.I")
     set(_MACHINE_ARCH_FLAG "/machine:THUMB")
+  elseif(_MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM64")
+    set(_MACHINE_ARCH_FLAG "/machine:ARM64")
   elseif(_MSVC_CXX_ARCHITECTURE_FAMILY STREQUAL "ARM")
     set(_MACHINE_ARCH_FLAG "/machine:ARM")
   else()