Fix Mac build

Cargo.toml

@@ -47,6 +47,9 @@ windows = { version = "0.58.0", features = ["Win32_System_Console", "Win32_Syste
 [target.'cfg(windows)'.build-dependencies]
 winres = "0.1.12"
 
+[target.'cfg(target_os = "macos")'.build-dependencies]
+system-deps = "7"
+
 [dev-dependencies]
 pretty_assertions = "1.4.1"
 test-case = "3.3.1"
@@ -79,3 +82,6 @@ pkg-fmt = "tgz"
 [package.metadata.binstall.overrides.x86_64-apple-darwin]
 pkg-url = "{ repo }/releases/download/v{ version }/{ name }-v{ version }-mac{ archive-suffix }"
 pkg-fmt = "tgz"
+
+[package.metadata.system-deps]
+"gstreamer-1.0" = "1.14"

build.rs

@@ -1,3 +1,7 @@
+#[cfg(docsrs)]
+fn main() {}
+
+#[cfg(not(docsrs))]
 fn main() {
     println!("cargo:rerun-if-env-changed=MADAMIRU_VERSION");
     println!("cargo:rerun-if-changed=assets/windows/manifest.xml");
@@ -9,4 +13,22 @@ fn main() {
         res.set_manifest_file("assets/windows/manifest.xml");
         res.compile().unwrap();
     }
+
+    // https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1516
+    #[cfg(target_os = "macos")]
+    match system_deps::Config::new().probe() {
+        Ok(deps) => {
+            let usr = std::path::Path::new("/usr/lib");
+            let usr_local = std::path::Path::new("/usr/local/lib");
+            for dep in deps.all_link_paths() {
+                if dep != &usr && dep != &usr_local {
+                    println!("cargo:rustc-link-arg=-Wl,-rpath,{:?}", dep.as_os_str());
+                }
+            }
+        }
+        Err(s) => {
+            println!("cargo:warning={s}");
+            std::process::exit(1);
+        }
+    }
 }