From c6950a22943c49cefa5af483e0a93484d4038b26 Mon Sep 17 00:00:00 2001
From: wangmiao1981 <wangmiao@us.ibm.com>
Date: Fri, 2 Sep 2016 21:50:02 -0700
Subject: [PATCH] modify comments

---
 doc/build/build_from_source.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/build/build_from_source.md b/doc/build/build_from_source.md
index 2c32c37e9dd..36681727f64 100644
--- a/doc/build/build_from_source.md
+++ b/doc/build/build_from_source.md
@@ -125,6 +125,8 @@ mkdir build
 cd build
 # you can add build option here, such as:    
 cmake -DWITH_GPU=ON -DWITH_DOC=OFF -DCMAKE_INSTALL_PREFIX=<path to install> ..
+# please use sudo make install, if you want
+# to install PaddlePaddle into the system
 make -j `nproc` && make install
 # PaddlePaddle installation path
 export PATH=<path to install>/bin:$PATH
-- 
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