[#3731] Fix path of sphinx-build in meson.build

diff --git a/doc/sphinx/meson.build b/doc/sphinx/meson.build
index 71d6e2d3be7d2a084464bcb639f805ae6c40475c..0f5072c70dbb549d01c2fe7e0ea3ad4467ecb2b3 100644 (file)
--- a/doc/sphinx/meson.build
+++ b/doc/sphinx/meson.build
@@ -86,16 +86,19 @@ else
     pdflatex = 'false'
 endif
 make_conf_data.set('PDFLATEX_AND_OPTS', pdflatex + ' -interaction nonstopmode')
-make_conf_data.set('SPHINXBUILD', SPHINX.full_path())
+if SPHINX.found()
+    make_conf_data.set('SPHINXBUILD', SPHINX.full_path())
+else
+    make_conf_data.set('SPHINXBUILD', 'false')
+endif
 make_conf_data.set('sphinxopts', ' '.join(sphinxopts))
 if PLANTUML.found()
     make_conf_data.set('HAVE_PLANTUML', 'yes')
-    plantuml = PLANTUML.full_path()
+    make_conf_data.set('PLANTUML', PLANTUML.full_path())
 else
     make_conf_data.set('HAVE_PLANTUML', 'no')
-    plantuml = 'false'
+    make_conf_data.set('PLANTUML', 'false')
 endif
-make_conf_data.set('PLANTUML', plantuml)
 make_conf_data.set('umls', ' '.join(umls))
 make_conf_data.set('svgs', ' '.join(svgs))
 if XMLLINT.found()