From de64a85b744c6860484082b84d5b3c3c5eff2718 Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Thu, 30 Aug 2018 22:50:53 +0200
Subject: [PATCH] makefiles: app_dirs.inc.mk initial commit

This helper Makefile is supposed to unify finding folders with
applications that can be built.
---
 makefiles/app_dirs.inc.mk | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 makefiles/app_dirs.inc.mk

diff --git a/makefiles/app_dirs.inc.mk b/makefiles/app_dirs.inc.mk
new file mode 100644
index 0000000000..d181aed5e3
--- /dev/null
+++ b/makefiles/app_dirs.inc.mk
@@ -0,0 +1,14 @@
+# fallback so empty RIOTBASE won't lead to "/examples/"
+RIOTBASE ?= .
+
+# 1. use wildcard to find Makefiles
+# 2. use patsubst to drop trailing "/"
+# 3. use patsubst to drop possible leading "./"
+# 4. sort
+APPLICATION_DIRS := $(sort $(patsubst ./%,%,$(patsubst %/,%,$(dir $(wildcard \
+	$(RIOTBASE)/examples/*/Makefile \
+	$(RIOTBASE)/tests/*/Makefile    \
+	)))))
+
+info-applications:
+	@for dir in $(APPLICATION_DIRS); do echo $$dir; done
-- 
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