From d34c116505aadf3280a1b15372d8a64722d8cce7 Mon Sep 17 00:00:00 2001
From: "David B. Kinder" <david.b.kinder@intel.com>
Date: Tue, 5 Feb 2019 09:53:16 -0800
Subject: [PATCH] doc: add clean target to Makefile

Top-level Makefile is for documentation build convenience, so make it a
bit more convenient by adding a make clean target (sometimes needed when
to do a clean doc build when changes are made).

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 0201eba26a0..0a205e7c334 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 #
-# Top level makefile for things not covered by cmake
+# Top level makefile for documentation build
 #
 
 ifndef ZEPHYR_BASE
@@ -12,6 +12,9 @@ SPHINXOPTS ?= -q
 
 # Documentation targets
 # ---------------------------------------------------------------------------
+clean:
+	rm -rf ${BUILDDIR}
+
 htmldocs:
 	mkdir -p ${BUILDDIR} && cmake -GNinja -DDOC_TAG=${DOC_TAG} -DSPHINXOPTS=${SPHINXOPTS} -B${BUILDDIR} -Hdoc/ && ninja -C ${BUILDDIR} htmldocs