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-rw-r--r--bindgen/lib.rs7
1 files changed, 7 insertions, 0 deletions
diff --git a/bindgen/lib.rs b/bindgen/lib.rs
index 53bbd887..4b71fb97 100644
--- a/bindgen/lib.rs
+++ b/bindgen/lib.rs
@@ -731,6 +731,13 @@ impl Builder {
///
/// The default is the latest stable Rust version
pub fn rust_target(mut self, rust_target: RustTarget) -> Self {
+ #[allow(deprecated)]
+ if rust_target <= RustTarget::Stable_1_30 {
+ warn!(
+ "The {} rust target is deprecated. If you have a good reason to use this target please report it at https://github.com/rust-lang/rust-bindgen/issues",
+ String::from(rust_target)
+ );
+ }
self.options.set_rust_target(rust_target);
self
}