[aoti][win] add support for a list of shim libraries

torch/_inductor/config.py

@@ -1670,7 +1670,7 @@ class aot_inductor:
 
     # If link_libtorch is False and cross_target_platform is windows,
     # a library needs to be provided to provide the shim implementations.
-    aoti_shim_library: Optional[str] = None
+    aoti_shim_library: Optional[str | list[str]] = None
     aoti_shim_library_path: Optional[str] = None
 
 

torch/_inductor/cpp_builder.py

@@ -1147,10 +1147,16 @@ def _get_torch_related_args(
     else:
         libraries_dirs = []
         if config.aot_inductor.cross_target_platform == "windows":
-            assert config.aot_inductor.aoti_shim_library, (
+            aoti_shim_library = config.aot_inductor.aoti_shim_library
+
+            assert aoti_shim_library, (
                 "'config.aot_inductor.aoti_shim_library' must be set when 'cross_target_platform' is 'windows'."
             )
-            libraries.append(config.aot_inductor.aoti_shim_library)
+            if isinstance(aoti_shim_library, str):
+                libraries.append(aoti_shim_library)
+            else:
+                assert isinstance(aoti_shim_library, list)
+                libraries.extend(aoti_shim_library)
 
     if config.aot_inductor.cross_target_platform == "windows":
         assert config.aot_inductor.aoti_shim_library_path, (