Add an option to fail build on C++ compile warnings

1 files changed, 1 insertions, 0 deletions

diff --git a/build.rs b/build.rs
index aec0dc90..f7994418 100644
--- a/build.rs
+++ b/build.rs
@@ -8,6 +8,7 @@ fn main() {
         .cpp(true)
         .cpp_link_stdlib(None) // linked via link-cplusplus crate
         .flag_if_supported(cxxbridge_flags::STD)
+        .warnings_into_errors(cfg!(deny_warnings))
         .compile("cxxbridge1");
 
     println!("cargo:rerun-if-changed=src/cxx.cc");