update

tools/ci_build/build.py

@@ -1205,10 +1205,11 @@ def generate_build_tree(
                 raise BuildError("unknown python arch")
         elif is_macOS():
             for kvp in cmake_extra_args:
-                key,value = s.split('=')
-                if key == CMAKE_OSX_ARCHITECTURES and len(value.split(';')) == 2:
+                key, value = s.split("=")
+                if key == "CMAKE_OSX_ARCHITECTURES" and len(value.split(";")) == 2:
                     triplet = "universal2-osx"
         if triplet:
+            log.info(f"setting target triplet to {triplet}")
             add_default_definition(cmake_extra_defines, "VCPKG_TARGET_TRIPLET", triplet)
 
     # By default on Windows we currently support only cross compiling for ARM/ARM64
@@ -1391,7 +1392,7 @@ def generate_build_tree(
             raise BuildError("You must set dml_path or dml_external_project when building with the GDK.")
 
     if is_macOS() and not args.android:
-        cmake_args += ["-DCMAKE_OSX_ARCHITECTURES=" + args.osx_arch]
+        add_default_definition(cmake_extra_defines, "CMAKE_OSX_ARCHITECTURES", args.osx_arch)
         if args.apple_deploy_target:
             cmake_args += ["-DCMAKE_OSX_DEPLOYMENT_TARGET=" + args.apple_deploy_target]
         # Code sign the binaries, if the code signing development identity and/or team id are provided