Make: More optimizations in Rust builds

Author: ashvardanian

Cargo.toml

@@ -10,6 +10,12 @@ repository = "https://github.com/ashvardanian/fork_union"
 [lib]
 path = "fork_union.rs"
 
+[profile.release]
+opt-level = 3     # Corresponds to -O3
+lto = true        # Enables Link Time Optimization for further optimizations
+codegen-units = 1 # May increase compilation time but optimizes further
+rpath = false     # On some systems, setting this to false can help with optimizations
+
 [[example]]
 name = "nbody"
 path = "scripts/nbody.rs"