provide information how to link to shared objects
diff --git a/book/src/tutorial-3.md b/book/src/tutorial-3.md
index 139a24f..dcd67c5 100644
--- a/book/src/tutorial-3.md
+++ b/book/src/tutorial-3.md
@@ -7,6 +7,8 @@
`$OUT_DIR/bindings.rs` where `$OUT_DIR` is chosen by `cargo` and is something
like `./target/debug/build/bindgen-tutorial-bzip2-sys-afc7747d7eafd720/out/`.
+Note that the associated shared object to `bz2` is `libbz2.so`. In general, a `lib<name>.so` should be referenced in the build file by `<name>`.
+
```rust,ignore
extern crate bindgen;
@@ -14,6 +16,9 @@
use std::path::PathBuf;
fn main() {
+ // Tell cargo to look for shared libraries in the specified directory
+ println!("cargo:rustc-link-search=/path/to/lib");
+
// Tell cargo to tell rustc to link the system bzip2
// shared library.
println!("cargo:rustc-link-lib=bz2");
