Fix wheel build and smoke test

CMakeLists.txt

@@ -756,6 +756,14 @@ if(EXECUTORCH_BUILD_PYBIND)
                  BUILD_RPATH "@loader_path/../../../torch/lib"
                  INSTALL_RPATH "@loader_path/../../../torch/lib"
     )
+  else()
+    set_target_properties(
+      portable_lib
+      PROPERTIES # Assume that this library will be installed in
+                 # `site-packages/executorch/extension/pybindings`, and that
+                 # the custom_ops_aot_lib should be found with relative path.
+		  BUILD_RPATH "$ORIGIN:$ORIGIN/../../examplesmodels/llama2/custom_ops"
+    )
   endif()
 
   install(TARGETS portable_lib

build/packaging/post_build_script.sh

@@ -7,4 +7,5 @@
 
 set -eux
 
+rm -rf pip-out/
 echo "This script is run after building ExecuTorch binaries"

setup.py

@@ -573,6 +573,15 @@ def get_ext_modules() -> List[Extension]:
                 "executorch/examples/models/llama2/custom_ops",
             )
         )
+        ext_modules.append(
+            # Install the prebuilt library for quantized ops required by custom ops.
+            BuiltFile(
+                "kernels/quantized/libquantized_ops_aot_lib.*",
+                # Pushing the quantized ops to the same directory as the custom ops
+                # so that we don't need additional rpath for custom_ops.
+                "executorch/examples/models/llama2/custom_ops",
+            )
+        )
 
     # Note that setuptools uses the presence of ext_modules as the main signal
     # that a wheel is platform-specific. If we install any platform-specific