From 8ae6defd8340a13d88977d9973abd79495a99fcd Mon Sep 17 00:00:00 2001
From: Thomas Deutschmann <whissi@gentoo.org>
Date: Sat, 29 Aug 2020 22:30:59 +0200
Subject: [PATCH 27/30] 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 92f3070a85..0d72914c43 100644
--- a/config/makefiles/rust.mk
+++ b/config/makefiles/rust.mk
@@ -64,6 +64,7 @@ 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
@@ -77,6 +78,7 @@ RUSTFLAGS += -Cembed-bitcode=yes
 endif
 endif
 endif
+endif
 
 ifdef CARGO_INCREMENTAL
 export CARGO_INCREMENTAL
-- 
2.31.0

