From 9c50cf0c6d8f0b11cd76a28cc4ef9bca6ef732e0 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Tue, 9 May 2017 01:41:28 +0000
Subject: [PATCH] Revert "Revert "CMake: Move sphinx detection into
 AddSphinxTarget.cmake""

This reverts commit r302054.

Re-commit now that I have fixes for clang/lld.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302499 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/config-ix.cmake               | 10 ----------
 cmake/modules/AddSphinxTarget.cmake | 13 +++++++++++++
 docs/CMakeLists.txt                 |  2 +-
 3 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 0331d0f..de8e9bf 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -530,16 +530,6 @@ else()
   message(STATUS "Doxygen disabled.")
 endif()
 
-if (LLVM_ENABLE_SPHINX)
-  message(STATUS "Sphinx enabled.")
-  find_package(Sphinx REQUIRED)
-  if (LLVM_BUILD_DOCS)
-    add_custom_target(sphinx ALL)
-  endif()
-else()
-  message(STATUS "Sphinx disabled.")
-endif()
-
 set(LLVM_BINDINGS "")
 if(WIN32)
   message(STATUS "Go bindings disabled.")
diff --git a/cmake/modules/AddSphinxTarget.cmake b/cmake/modules/AddSphinxTarget.cmake
index cfc7f38..c3a676d 100644
--- a/cmake/modules/AddSphinxTarget.cmake
+++ b/cmake/modules/AddSphinxTarget.cmake
@@ -1,3 +1,16 @@
+
+# Create sphinx target
+if (LLVM_ENABLE_SPHINX AND NOT TARGET sphinx)
+  message(STATUS "Sphinx enabled.")
+  find_package(Sphinx REQUIRED)
+  if (LLVM_BUILD_DOCS)
+    add_custom_target(sphinx ALL)
+  endif()
+else()
+  message(STATUS "Sphinx disabled.")
+endif()
+
+
 # Handy function for creating the different Sphinx targets.
 #
 # ``builder`` should be one of the supported builders used by
diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index 6dff219..4437610 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -103,8 +103,8 @@ endif()
 endif()
 
 if (LLVM_ENABLE_SPHINX)
+  include(AddSphinxTarget)
   if (SPHINX_FOUND)
-    include(AddSphinxTarget)
     if (${SPHINX_OUTPUT_HTML})
       add_sphinx_target(html llvm)
     endif()
-- 
1.8.3.1