From f5cbe00118193cecedc9b3c941faab265b35e38b Mon Sep 17 00:00:00 2001
From: Alexandre Abadie <alexandre.abadie@inria.fr>
Date: Sat, 16 Nov 2019 14:26:02 +0100
Subject: [PATCH] Makefile.dep: disable stdio_rtt when stdio_uart is used

---
 Makefile.dep | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile.dep b/Makefile.dep
index dde5823a2e..50cff55a02 100644
--- a/Makefile.dep
+++ b/Makefile.dep
@@ -468,6 +468,9 @@ endif
 
 ifneq (,$(filter stdio_uart,$(USEMODULE)))
   FEATURES_REQUIRED += periph_uart
+
+  # stdio_rtt cannot be used when stdio_uart is loaded
+  DISABLE_MODULE += stdio_rtt
 endif
 
 ifneq (,$(filter isrpipe,$(USEMODULE)))