fix: compile only on linux

build.rs

@@ -2,9 +2,7 @@ use std::env;
 use std::path::PathBuf;
 
 fn main() {
-    let library = pkg_config::Config::new()
-        .probe("libnotify")
-        .expect("Cannot locate libnotify. Is it installed?");
+    let library = pkg_config::Config::new().probe("libnotify").unwrap();
 
     let paths = library
         .include_paths
@@ -19,8 +17,7 @@ fn main() {
         .generate()
         .expect("Unable to generate bindings");
 
-    let out_path =
-        PathBuf::from(env::var("OUT_DIR").expect("Out $OUT_DIR not set. Perhaps a bindgen error?"));
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
 
     bindings
         .write_to_file(out_path.join("bindings.rs"))

src/lib.rs

@@ -17,6 +17,9 @@
 #![allow(non_snake_case)]
 #![warn(missing_docs)]
 
+#[cfg(not(target_os = "linux"))]
+compile_error!("Libnotify-rs only supports linux");
+
 /// Basic libnotify rust wrapper
 pub mod api;
 /// Higher level abstraction over api