From f9e36971f3346cd3274bb9d67c4d9b39ea5ee732 Mon Sep 17 00:00:00 2001
From: liaogang <liaogang@baidu.com>
Date: Fri, 5 May 2017 10:29:14 +0800
Subject: [PATCH] Add Lapack warning

---
 cmake/external/openblas.cmake            | 1 -
 paddle/math/tests/test_matrixCompare.cpp | 8 ++++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/cmake/external/openblas.cmake b/cmake/external/openblas.cmake
index 86cb473c385..46398b22c27 100644
--- a/cmake/external/openblas.cmake
+++ b/cmake/external/openblas.cmake
@@ -15,7 +15,6 @@
 INCLUDE(cblas)
 
 IF(NOT ${CBLAS_FOUND})
-    SET(LAPACK_FOUND OFF)
     INCLUDE(ExternalProject)
 
     SET(CBLAS_SOURCES_DIR ${THIRD_PARTY_PATH}/openblas)
diff --git a/paddle/math/tests/test_matrixCompare.cpp b/paddle/math/tests/test_matrixCompare.cpp
index 782a9613d87..05adec63701 100644
--- a/paddle/math/tests/test_matrixCompare.cpp
+++ b/paddle/math/tests/test_matrixCompare.cpp
@@ -236,8 +236,16 @@ TEST(Matrix, unary) {
       testMatrixTranspose(height, width);
       testMatrixRotate(height, width);
     }
+    #ifdef LAPACK_FOUND
     // inverse matrix
     testMatrixInverse(height);
+    #else
+    LOG(WARNING) << "Cannot run Matrix Inverse Unit Test.\n"
+                 << "Failed to find lapack library in current system.\n"
+                 << "To address this issue, Please adopt one of the following approaches: \n"
+                 << "1. Simply issue `sudo apt-get install liblapacke-dev` to avoid re-build source code. \n"
+                 << "2. Install MKL/Openblas/ATLAS and re-build PaddlePaddle source code."
+    #endif
   }
 }
 
-- 
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