Select correct tool platform when building on Windows ARM64 natively (GH-28491)

Author: niyas-sait

PCbuild/pcbuild.proj

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props"/>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props"/>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets"/>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{CC9B93A2-439D-4058-9D29-6DCF43774405}</ProjectGuid>
     <Platform Condition="'$(Platform)' == ''">Win32</Platform>
@@ -15,9 +18,7 @@
 
   <ItemDefinitionGroup>
     <FreezeProjects>
-      <Platform>$(Platform)</Platform>
-      <Platform Condition="$(Platform) == 'ARM'">Win32</Platform>
-      <Platform Condition="$(Platform) == 'ARM64'">x64</Platform>
+      <Platform>$(PreferredToolArchitecture)</Platform>
       <Configuration>$(Configuration)</Configuration>
       <Configuration Condition="$(Configuration) == 'PGInstrument'">Release</Configuration>
       <Properties></Properties>

Tools/scripts/freeze_modules.py

@@ -8,6 +8,7 @@
 import os
 import ntpath
 import posixpath
+import platform
 import subprocess
 import sys
 import textwrap
@@ -35,7 +36,10 @@
             sys.exit("ERROR: missing _freeze_module")
 else:
     def find_tool():
-        for arch in ['amd64', 'win32']:
+        archs = ['amd64', 'win32']
+        if platform.machine() == "ARM64":
+             archs.append('arm64')
+        for arch in archs:
             for exe in ['_freeze_module.exe', '_freeze_module_d.exe']:
                 tool = os.path.join(ROOT_DIR, 'PCbuild', arch, exe)
                 if os.path.isfile(tool):