diff --git a/build/Utils.cmake b/build/Utils.cmake
index 246bd68c837..d81a2c8efaf 100644
--- a/build/Utils.cmake
+++ b/build/Utils.cmake
@@ -196,6 +196,21 @@ function(extract_sources sources_file)
         message(FATAL_ERROR "Unsupported ANDROID_ABI setting ${ANDROID_ABI}. Please add it here!")
       endif()
     endif()
+
+    if(CMAKE_SYSTEM_NAME STREQUAL "iOS")
+      if(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
+        set(target_platforms_arg "--target-platforms=shim//:ios-arm64")
+      endif()
+    endif()
+
+    if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+      if(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
+        set(target_platforms_arg "--target-platforms=shim//:macos-arm64")
+      elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+        set(target_platforms_arg "--target-platforms=shim//:macos-x86_64")
+      endif()
+    endif()
+
     execute_process(
       COMMAND
         ${PYTHON_EXECUTABLE} ${executorch_root}/build/extract_sources.py
diff --git a/shim/BUCK b/shim/BUCK
index b18ee71454e..fa0d8464b42 100644
--- a/shim/BUCK
+++ b/shim/BUCK
@@ -74,3 +74,27 @@ execution_platform(
     use_windows_path_separators = host_info().os.is_windows,
     visibility = ["PUBLIC"],
 )
+
+execution_platform(
+    name = "ios-arm64",
+    cpu_configuration = "prelude//cpu:arm64",
+    os_configuration = "prelude//os:ios",
+    use_windows_path_separators = False,
+    visibility = ["PUBLIC"],
+)
+
+execution_platform(
+    name = "macos-arm64",
+    cpu_configuration = "prelude//cpu:arm64",
+    os_configuration = "prelude//os:macos",
+    use_windows_path_separators = False,
+    visibility = ["PUBLIC"],
+)
+
+execution_platform(
+    name = "macos-x86_64",
+    cpu_configuration = "prelude//cpu:x86_64",
+    os_configuration = "prelude//os:macos",
+    use_windows_path_separators = False,
+    visibility = ["PUBLIC"],
+)