Debug CMakeLists.txt

Author: mcbarton

CMakeLists.txt

@@ -497,7 +497,12 @@ if(MSVC)
   if(MSVC_VERSION LESS 1914)
     set(MSVC_EXPORTLIST ${MSVC_EXPORTLIST} ??3@YAXPAX0@Z ??_V@YAXPAX0@Z)
   endif()
-  message(STATUS "CMAKE_SYSTEM_PROCESSOR ${CMAKE_SYSTEM_PROCESSOR}")
+  include(CheckCXXSymbolExists)
+check_symbol_exists(__aarch64__ "" IS_ARM64)
+
+if(IS_ARM64)
+    message(STATUS "Compile-time check: Detected ARM64 (__aarch64__)")
+endif()
   if(MSVC_VERSION GREATER_EQUAL 1936 AND NOT (CMAKE_SYSTEM_PROCESSOR MATCHES "ARM" OR CMAKE_SYSTEM_PROCESSOR MATCHES "AARCH64"))
     set(MSVC_EXPORTLIST ${MSVC_EXPORTLIST}
         __std_find_trivial_1