From 5a03f08f91c8439b70053cea39e268fb3fc079fb Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Wed, 10 Aug 2016 16:06:12 +0200
Subject: [PATCH] cpu: cortexm_common: compile thread_arch.c without LTO

---
 cpu/cortexm_common/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cpu/cortexm_common/Makefile b/cpu/cortexm_common/Makefile
index 48422e909a..6b348c14e3 100644
--- a/cpu/cortexm_common/Makefile
+++ b/cpu/cortexm_common/Makefile
@@ -1 +1,5 @@
+# thread_arch.c's inline assembler breaks when compiling with link time
+# optimization. see #5774.
+SRC_NOLTO += thread_arch.c
+
 include $(RIOTBASE)/Makefile.base