Add -j auto to sphinx opts

Sphinx supports multiprocessing via the -j flag.  set to
auto so that multiple processes based on CPU core count
will be used.

Change-Id: Id89f860e0e113d670477b0322a7950281543d9d5

diff --git a/doc/build/Makefile b/doc/build/Makefile
index cd39b7288820287fdafa222d15f8ff7f51402d62..96e7db019cb53e007d3463117b4d3dd435773f2b 100644 (file)
--- a/doc/build/Makefile
+++ b/doc/build/Makefile
@@ -2,7 +2,7 @@
 #
 
 # You can set these variables from the command line.
-SPHINXOPTS    = -v
+SPHINXOPTS    = -v -j auto
 SPHINXBUILD   = sphinx-build
 PAPER         =
 BUILDDIR      = output