From b2695c540857197acbf70e7865c16e0722083001 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benpicco@beuth-hochschule.de>
Date: Wed, 25 Mar 2020 17:12:27 +0100
Subject: [PATCH] Makefile.features: provide CPU as a feature

Provide the feature `cpu_$(CPU)`
This allows to easily list all boards with a CPU by running

    FEATURES_REQUIRED=cpu_samd21 make info-boards-supported
---
 Makefile.features | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Makefile.features b/Makefile.features
index 2ec9b3e245..209957b86d 100644
--- a/Makefile.features
+++ b/Makefile.features
@@ -17,3 +17,6 @@ ifeq (,$(CPU))
 endif
 
 include $(RIOTCPU)/$(CPU)/Makefile.features
+
+# Provide CPU as a feature to allow listing all boards with a CPU
+FEATURES_PROVIDED += cpu_$(CPU)