From 6d8cc88de31140b9ddf9f43a4ec347bb78cb2bc7 Mon Sep 17 00:00:00 2001
From: yuyang18 <reyoung@126.com>
Date: Mon, 14 May 2018 19:07:13 +0800
Subject: [PATCH] Change cmake for build doc

Check the system requirements
---
 CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 23bbe829ac..030bd19b3f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,6 @@ message(STATUS "CXX compiler: ${CMAKE_CXX_COMPILER}, version: "
 message(STATUS "C compiler: ${CMAKE_C_COMPILER}, version: "
         "${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION}")
 
-find_package(Sphinx)
 if(NOT CMAKE_CROSSCOMPILING)
     find_package(CUDA QUIET)
 endif(NOT CMAKE_CROSSCOMPILING)
@@ -226,5 +225,7 @@ if(WITH_PYTHON)
 endif()
 
 if(WITH_DOC)
+    find_package(Sphinx REQUIRED)
+    find_python_module(recommonmark REQUIRED)
     add_subdirectory(doc)
 endif()
-- 
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