[PATCH 5/8] Makefile: use splithtml tag for html target

[Antonin Godard <antonin.godard@bootlin.com>]

Sphinx has the ability to include content based on tags in the
documentation with the '.. only::' directive. As '.. only:: html' is
common to _all_ HTML-based documents (html, singlehtml, epub), there was
no way to differentiate the split HTML build from the others.

For that reason, add the splithtml tag when building it. The goal is be
able to to include content _only_ for this build type.

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
---
 documentation/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/documentation/Makefile b/documentation/Makefile
index f165e36c2..2f2d6213d 100644
--- a/documentation/Makefile
+++ b/documentation/Makefile
@@ -55,6 +55,10 @@ latexpdf:
 
 all: html epub latexpdf
 
+html:
+	$(SOURCEDIR)/set_versions.py
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" --tag splithtml $(SPHINXOPTS)
+
 %:
 	$(SOURCEDIR)/set_versions.py
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS)

-- 
2.55.0