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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Thomas Deutschmann <whissi@gentoo.org>
Date: Sat, 29 Aug 2020 22:30:59 +0200
Subject: [PATCH] LTO: Only enable LTO for Rust when complete build uses LTO

Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>
---
 config/makefiles/rust.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/config/makefiles/rust.mk b/config/makefiles/rust.mk
index 524bc436fdf361a0f6bca339393392786efe070c..205f746ef781119faf602f656aefc68d020aa1f9 100644
--- a/config/makefiles/rust.mk
+++ b/config/makefiles/rust.mk
@@ -82,6 +82,7 @@ endif
 # These flags are passed via `cargo rustc` and only apply to the final rustc
 # invocation (i.e., only the top-level crate, not its dependencies).
 cargo_rustc_flags = $(CARGO_RUSTCFLAGS)
+ifdef MOZ_LTO
 ifndef DEVELOPER_OPTIONS
 ifndef MOZ_DEBUG_RUST
 # Enable link-time optimization for release builds, but not when linking
@@ -101,6 +102,7 @@ endif
 endif
 endif
 endif
+endif
 
 ifdef CARGO_INCREMENTAL
 export CARGO_INCREMENTAL