From bddeb3d001c91a37620df468d9efef75906c65ac Mon Sep 17 00:00:00 2001
From: xkszltl <xkszltl@users.noreply.github.com>
Date: Wed, 2 Jan 2019 14:00:21 -0800
Subject: [PATCH] Fix "invalid escape" issue when eigen_SOURCE_PATH contains
 "\". (#258)

---
 cmake/external/eigen.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/external/eigen.cmake b/cmake/external/eigen.cmake
index 840b4ecd5a..89a009e39e 100644
--- a/cmake/external/eigen.cmake
+++ b/cmake/external/eigen.cmake
@@ -1,7 +1,7 @@
 include (ExternalProject)
 
 if (onnxruntime_USE_PREINSTALLED_EIGEN)
-    set(eigen_INCLUDE_DIRS ${eigen_SOURCE_PATH})
+    file(TO_CMAKE_PATH ${eigen_SOURCE_PATH} eigen_INCLUDE_DIRS)
     ExternalProject_Add(eigen
         PREFIX eigen
         SOURCE_DIR ${eigen_SOURCE_PATH}