NetDesk 1.5.0 — source release

native/opus/build.rs

@@ -0,0 +1,48 @@
+//! Link the vendored static libopus (UCRT MinGW ABI) + generate FFI bindings
+//! from the vendored opus headers via bindgen (libclang). Same vendoring
+//! approach as netdesk-vpx: a UCRT-ABI libopus.a so there is no vcpkg/MSYS2 or
+//! runtime DLL dependency, and no fragile build-from-source (audiopus_sys's
+//! build script mangles extended-length paths on this toolchain).
+use std::path::PathBuf;
+
+fn main() {
+    let manifest = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
+    let tp = manifest.join("..").join("third_party").join("ucrt64");
+    let lib = tp.join("lib");
+    let inc = tp.join("include");
+
+    println!("cargo:rustc-link-search=native={}", lib.display());
+    println!("cargo:rustc-link-lib=static=opus");
+    println!("cargo:rerun-if-changed=wrapper.h");
+    println!("cargo:rerun-if-changed=build.rs");
+    println!("cargo:rerun-if-changed={}", lib.join("libopus.a").display());
+
+    if std::env::var("LIBCLANG_PATH").is_err() {
+        for p in ["C:/Program Files/LLVM/bin", "C:/Program Files (x86)/LLVM/bin"] {
+            if PathBuf::from(p).join("libclang.dll").exists() {
+                std::env::set_var("LIBCLANG_PATH", p);
+                break;
+            }
+        }
+    }
+
+    // OpusEncoder / OpusDecoder are opaque (used only through pointers), so
+    // bindgen's default opaque representation is exactly right here — unlike
+    // libvpx's config structs, we never set their fields.
+    let regex = "^(opus|Opus|OPUS).*";
+    let bindings = bindgen::Builder::default()
+        .header("wrapper.h")
+        .clang_arg(format!("-I{}", inc.display()))
+        .allowlist_type(regex)
+        .allowlist_var(regex)
+        .allowlist_function(regex)
+        .rustified_enum(regex)
+        .trust_clang_mangling(false)
+        .layout_tests(false)
+        .generate_comments(false)
+        .generate()
+        .expect("bindgen libopus");
+    bindings
+        .write_to_file(PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("opus_ffi.rs"))
+        .expect("write opus_ffi.rs");
+}