From cfaa57fe6cd63952290e956beb1e4d58e7fd60f5 Mon Sep 17 00:00:00 2001
From: Karl Fessel <karl.fessel@ovgu.de>
Date: Thu, 11 Mar 2021 15:44:10 +0100
Subject: [PATCH] board/native: no omit frame pointer if backtrace is used

this makes riots test work but may have different result than O0
see man 3 backtrace #NOTES
---
 boards/native/Makefile.include | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/boards/native/Makefile.include b/boards/native/Makefile.include
index c391521c27..cad532db2f 100644
--- a/boards/native/Makefile.include
+++ b/boards/native/Makefile.include
@@ -22,7 +22,12 @@ export GPROF ?= gprof
 # basic cflags:
 CFLAGS += -Wall -Wextra -pedantic $(CFLAGS_DBG) $(CFLAGS_OPT)
 CFLAGS_DBG ?= -g3
-CFLAGS_OPT ?= -Og
+ifneq (,$(filter backtrace,$(USEMODULE)))
+  $(warning module backtrace is used, do not omit frame pointers)
+  CFLAGS_OPT ?= -Og -fno-omit-frame-pointer
+else
+  CFLAGS_OPT ?= -Og
+endif
 
 # default std set to gnu11 if not overwritten by user
 ifeq (,$(filter -std=%, $(CFLAGS)))