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doc: Makefile: if sphinx is not found, run a check script 

Right now, if the building system doesn't find Sphinx, it
bails out, without providing any instructions about what
should be done.

Instead, run a script, providing some guidance about the
steps needed for Sphinx build to work.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2017-07-16 19:08:06 -03:00 committed by Jonathan Corbet
parent adf31eebd7
commit 92a037f01a
1 changed files with 2 additions and 0 deletions
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Documentation/Makefile
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@ -22,6 +22,8 @@ ifeq ($(HAVE_SPHINX),0)
.DEFAULT:
$(warning The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed and in PATH, or set the SPHINXBUILD make variable to point to the full path of the '$(SPHINXBUILD)' executable.)
@echo
@./scripts/sphinx-pre-install
@echo " SKIP Sphinx $@ target."
else # HAVE_SPHINX