1  fn main() -> Result<(), std::io::Error> {
 2      // Link to libwaku only when the "waku" feature is enabled.
 3      #[cfg(feature = "waku")]
 4      {
 5          let manifest_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
 6          let libs_dir = std::path::Path::new(&manifest_dir).join("libs");
 7          println!("cargo:rustc-link-search=native={}", libs_dir.display());
 8  
 9          let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap_or_default();
10          match target_os.as_str() {
11              "macos" | "linux" => {
12                  println!("cargo:rustc-link-lib=dylib=waku");
13                  println!("cargo:rustc-link-arg=-Wl,-rpath,{}", libs_dir.display());
14              }
15              other => {
16                  panic!("Unsupported target OS: {other}. Only macOS and Linux are supported.");
17              }
18          }
19      }
20  
21      let mut config = prost_build::Config::new();
22  
23      config.extern_path(
24          ".consensus.v1.Proposal",
25          "::hashgraph_like_consensus::protos::consensus::v1::Proposal",
26      );
27      config.extern_path(
28          ".consensus.v1.Vote",
29          "::hashgraph_like_consensus::protos::consensus::v1::Vote",
30      );
31  
32      config.compile_protos(
33          &[
34              "src/protos/messages/v1/application.proto",
35              "src/protos/messages/v1/welcome.proto",
36          ],
37          &["src/protos/"],
38      )?;
39      Ok(())
40  }