From 0501ed4bbdbf8d16a69a4460d2ada33ac259365d Mon Sep 17 00:00:00 2001
From: Thomas Deutschmann <whissi@gentoo.org>
Date: Wed, 15 Apr 2020 00:27:25 +0200
Subject: [PATCH 20/30] bmo#1516803: force one LTO partition for sandbox when
 using GCC

Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>
---
 security/sandbox/linux/moz.build | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/security/sandbox/linux/moz.build b/security/sandbox/linux/moz.build
index e62d1a99a4..913b9ba2ce 100644
--- a/security/sandbox/linux/moz.build
+++ b/security/sandbox/linux/moz.build
@@ -114,9 +114,10 @@ if CONFIG["CC_TYPE"] in ("clang", "gcc"):
 # gcc lto likes to put the top level asm in syscall.cc in a different partition
 # from the function using it which breaks the build.  Work around that by
 # forcing there to be only one partition.
-for f in CONFIG["OS_CXXFLAGS"]:
-    if f.startswith("-flto") and CONFIG["CC_TYPE"] != "clang":
-        LDFLAGS += ["--param", "lto-partitions=1"]
+if CONFIG["CC_TYPE"] != "clang" and CONFIG["MOZ_LTO_LDFLAGS"] is not None:
+    for f in CONFIG["MOZ_LTO_LDFLAGS"]:
+        if f.startswith("-flto"):
+            LDFLAGS += ["--param", "lto-partitions=1"]
 
 DEFINES["NS_NO_XPCOM"] = True
 DisableStlWrapping()
-- 
2.34.1

