Enabling ARM64 Windows build is only for ARM64 Windows

Signed-off-by: Hiroshi Hatake <[email protected]>

LuaJIT.cmake

@@ -174,13 +174,12 @@ if(WIN32 OR MINGW)
   set(DASM_FLAGS ${DASM_FLAGS} -D WIN)
 endif()
 
-set(CROSSCOMPILING_MSVC 0)
+set(ARM64_MSVC 0)
 if (MSVC)
-  if ("${LJ_DETECTED_ARCH}" STREQUAL "AArch64")
-    set(CROSSCOMPILING_MSVC 1)
-    message(STATUS "Cross compiling with MSVC: ${CROSSCOMPILING_MSVC}")
-  else()
-    message(STATUS "Cross compiling with MSVC: ${CROSSCOMPILING_MSVC}")
+  if ("${LJ_DETECTED_ARCH}" STREQUAL "AArch64" AND
+  "${MAKE_HOST_SYSTEM_PROCESSOR}" STREQUAL ARM64)
+    set(ARM64_MSVC 1)
+    message(STATUS "Compiling for ARM64 with MSVC: ${ARM64_MSVC}")
   endif()
 endif()
 
@@ -389,7 +388,7 @@ endif()
 set(VM_DASC_PATH ${LJ_DIR}/vm_${DASM_ARCH}.dasc)
 
 # Build the minilua for host platform
-if(NOT CMAKE_CROSSCOMPILING OR CROSSCOMPILING_MSVC)
+if(NOT CMAKE_CROSSCOMPILING OR ARM64_MSVC)
   add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/host/minilua)
   set(MINILUA_PATH $<TARGET_FILE:minilua>)
 else()
@@ -453,7 +452,7 @@ if(HOST_WINE)
   set(BUILDVM_EXE buildvm.exe)
 endif()
 
-if(NOT CMAKE_CROSSCOMPILING OR CROSSCOMPILING_MSVC)
+if(NOT CMAKE_CROSSCOMPILING OR ARM64_MSVC)
   add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/host/buildvm)
   set(BUILDVM_PATH $<TARGET_FILE:buildvm>)
   add_dependencies(buildvm buildvm_arch_h)