From cf08508d21ffae5aea6c7dcb771ebd28612c6120 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 29 May 2019 20:09:31 -0300 Subject: [PATCH] docs: by default, build docs a lot faster with Sphinx >= 1.7 Since Sphinx version 1.7, it is possible to use "-jauto" in order to speedup documentation builds. On older versions, while -j was already supported, one would need to set the number of threads manually. So, if SPHINXOPTS is not provided, add -jauto, in order to speed up the build. That makes it *a lot* times faster than without -j. If one really wants to slow things down, it can just use: make SPHINXOPTS=-j1 htmldocs Signed-off-by: Mauro Carvalho Chehab [ jc: fixed perl magic to determine sphinx version ] Signed-off-by: Jonathan Corbet --- Documentation/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/Makefile b/Documentation/Makefile index 380e24053d6f..85d3cfafd77c 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -28,6 +28,8 @@ ifeq ($(HAVE_SPHINX),0) else # HAVE_SPHINX +export SPHINXOPTS = $(shell perl -e 'open IN,"sphinx-build --version 2>&1 |"; while () { if (m/([\d\.]+)/) { print "-jauto" if ($$1 >= "1.7") } ;} close IN') + # User-friendly check for pdflatex and latexmk HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi) HAVE_LATEXMK := $(shell if which latexmk >/dev/null 2>&1; then echo 1; else echo 0; fi)