Index: codex-rs/modcargo-crates/rama-boring-sys-0.5.9/build/main.rs
--- codex-rs/modcargo-crates/rama-boring-sys-0.5.9/build/main.rs.orig
+++ codex-rs/modcargo-crates/rama-boring-sys-0.5.9/build/main.rs
@@ -667,7 +667,7 @@ fn get_cpp_runtime_libs(config: &Config) -> Vec<String
     if env::var_os("CARGO_CFG_UNIX").is_some() {
         match env::var("CARGO_CFG_TARGET_OS").unwrap().as_ref() {
             "android" => vec!["c++_shared".to_owned()],
-            "macos" | "ios" | "freebsd" => vec!["c++".to_owned()],
+            "macos" | "ios" | "freebsd" | "openbsd" => vec!["c++".to_owned()],
             _ => vec!["stdc++".to_owned()],
         }
     } else {
