commit 7cabd5ac69a4135fd8dbc1f1bb9c9531a5f1e5c7
author Markus Heiser <markus.heiser@darmarit.de> Tue Jan 31 10:57:41 2017 +0100
committer Jonathan Corbet <corbet@lwn.net> Wed Feb 01 13:09:45 2017 -0700
tree d34c6ede476124468623685446c78d9f14ef907b
parent 2a0f4038a4919712a62031dc63aa871a84b4ad05

doc-rst: fixed cleandoc target when used with O=dir

The cleandocs target won't work if I use a different output folder::

  $ make O=/tmp/kernel SPHINXDIRS="process" cleandocs
  make[1]: Entering directory '/tmp/kernel'
  make[3]: *** No rule to make target 'clean'.  Stop.
  ... Documentation/Makefile.sphinx:100: recipe for target 'cleandocs' failed

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/Makefile.sphinx

diff --git a/Documentation/Makefile.sphinx b/Documentation/Makefile.sphinx
index 91f541a..b88f666 100644
--- a/Documentation/Makefile.sphinx
+++ b/Documentation/Makefile.sphinx
@@ -99,7 +99,7 @@
 
 cleandocs:
 	$(Q)rm -rf $(BUILDDIR)
-	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) -C Documentation/media clean
+	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media clean
 
 endif # HAVE_SPHINX