Index: esaxx-rs/build.rs
===================================================================
--- esaxx-rs.orig/build.rs
+++ esaxx-rs/build.rs
@@ -1,6 +1,9 @@
 #[cfg(feature = "cpp")]
 #[cfg(not(target_os = "macos"))]
+
+use std::env;
 fn main() {
+    println!("dh-cargo:deb-built-using=esaxx=0={}", env::var("CARGO_MANIFEST_DIR").unwrap());
     cc::Build::new()
         .cpp(true)
         .flag("-std=c++11")