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-rw-r--r--doc/Makefile.sphinx4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/Makefile.sphinx b/doc/Makefile.sphinx
index c663c2954..c9518558b 100644
--- a/doc/Makefile.sphinx
+++ b/doc/Makefile.sphinx
@@ -9,6 +9,10 @@ SOURCEDIR = .
BUILDDIR = _build
DESTDIR = final
+ifeq ($(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi),0)
+$(error "The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed")
+endif
+
# Put it first so that "make" without argument is like "make help".
help:
@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)