Use custom cargo profile in the hello-world example

Author: messense

examples/hello-world/Cargo.toml

@@ -6,3 +6,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[profile.release-lto]
+inherits = "release"
+lto = true

examples/hello-world/setup.py

@@ -10,6 +10,7 @@
             {"hello-world": "hello_world.hello-world"},
             binding=Binding.Exec,
             script=True,
+            args=["--profile", "release-lto"],
         )
     ],
     # rust extensions are not zip safe, just like C-extensions.