From 7b91cfbbb3ae0832a374a204b726a9a788de69e6 Mon Sep 17 00:00:00 2001
From: Nils Wentzell <nwentzell@flatironinstitute.org>
Date: Mon, 2 Dec 2019 15:16:13 -0500
Subject: [PATCH] [doc] Fix sphinx target dependencies for the case of no
 CPP2PY modules

---
 doc/CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index c8bbd4d5..03f40173 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -57,7 +57,9 @@ option(Sphinx_Only "When building the documentation, skip the Python Modules and
 if(NOT Sphinx_Only)
   # Autodoc usage requires the python modules to be built first
   get_property(CPP2PY_MODULES_LIST GLOBAL PROPERTY CPP2PY_MODULES_LIST)
-  add_dependencies(docs_sphinx ${CPP2PY_MODULES_LIST})
+  if(CPP2PY_MODULES_LIST)
+    add_dependencies(docs_sphinx ${CPP2PY_MODULES_LIST})
+  endif()
 
   # Generation of C++ Api and Example Outputs
   add_dependencies(docs_sphinx docs_cpp2rst docs_example_output)