From 351eda4dbb2eb630d20e63ed58452df559817b3c Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Sat, 8 Nov 2025 16:48:27 +0100
Subject: rust: add get_lto_compile_args

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 mesonbuild/compilers/rust.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mesonbuild/compilers/rust.py b/mesonbuild/compilers/rust.py
index fadf9772f..54b3da91a 100644
--- a/mesonbuild/compilers/rust.py
+++ b/mesonbuild/compilers/rust.py
@@ -341,6 +341,11 @@ class RustCompiler(Compiler):
             args.extend(['-C', f'link-arg={a}'])
         return args
 
+    def get_lto_compile_args(self, *, threads: int = 0, mode: str = 'default') -> T.List[str]:
+        # TODO: what about -Clinker-plugin-lto?
+        rustc_lto = 'lto=thin' if mode == 'thin' else 'lto'
+        return ['-C', rustc_lto]
+
     def get_werror_args(self) -> T.List[str]:
         # Use -D warnings, which makes every warning not explicitly allowed an
         # error
-- 
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