[XS] Change in coreboot[master]: docs: Build in parallel

[Martin L Roth (Code Review)]

Martin L Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/77452?usp=email )

Change subject: docs: Build in parallel
......................................................................

docs: Build in parallel

Use all available cores to speed up building the documentation.
As $(SPHINXOPTS) has no default in `Makefile.sphinx`, we can
communicate it to all sub-makes via `export`.

Change-Id: I25996f17348505722f3489a15a975de620331b5a
Signed-off-by: Simon Glass 
Signed-off-by: Nico Huber 
Original-reviewed-on: https://review.coreboot.org/c/coreboot/+/77363
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77452
Tested-by: build bot (Jenkins) 
Reviewed-by: Martin L Roth 
---
M Documentation/Makefile
1 file changed, 4 insertions(+), 1 deletion(-)

Approvals:
  Martin L Roth: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 54306a2..4d08c93 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -6,6 +6,9 @@

PDFLATEX  = pdflatex -t a4
 BUILDDIR ?= _build
+SPHINXOPTS ?= -j auto
+
+export SPHINXOPTS

FIGS=codeflow.pdf hypertransport.pdf

@@ -57,7 +60,7 @@
    rm -f corebootPortingGuide.pdf

livesphinx: $(BUILDDIR)
-	$(MAKE) -f Makefile.sphinx livehtml SPHINXOPTS="$(SPHINXOPTS)" BUILDDIR="$(BUILDDIR)"
+	$(MAKE) -f Makefile.sphinx livehtml BUILDDIR="$(BUILDDIR)"

test:
    @echo "Test for logging purposes - Failing tests will not fail the build"