[tools] Fix cppia bindir for arm64

Author: tobil4sk

tools/hxcpp/BuildTool.hx

@@ -1632,15 +1632,16 @@ class BuildTool
 
       if (args.length>0 && args[0].endsWith(".cppia"))
       {
-         var binDir = isWindows ? "Windows" : isMac ? "Mac64" : isLinux ? "Linux64" : null;
-         if (binDir==null)
+			var hostName = isWindows ? "Windows" : isMac ? "Mac" : isLinux ? "Linux" : null;
+			if (hostName==null)
             Log.error("Cppia is not supported on this host.");
-         var arch = getArch();
-         var binDir = isWindows ? (isWindowsArm ? "WindowsArm64" : "Windows64" ) :
-                       isMac ? "Mac64" :
-                       isLinux ? ("Linux64") :
-                       null;
-         var exe = '$HXCPP/bin/$binDir/Cppia' + (isWindows ? ".exe" : "");
+         var archSuffix = switch getArch() {
+            case 'arm64': 'Arm64';
+            case 'm64': '64';
+            case 'm32': '';
+            case _: return Log.error("Unsupported host architecture");
+         };
+         var exe = '$HXCPP/bin/$hostName$archSuffix/Cppia' + (isWindows ? ".exe" : "");
          if (!isWindows)
          {
             var phase = "find";