From 0e1d65d3b18cc62212bc81b3633725143c92511f Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Tue, 6 Jun 2017 21:09:22 +0300
Subject: [PATCH] build: fix PCH stub files generation optimization

---
 cmake/OpenCVPCHSupport.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmake/OpenCVPCHSupport.cmake b/cmake/OpenCVPCHSupport.cmake
index 8cfbe4b7c6..8a6c5c4612 100644
--- a/cmake/OpenCVPCHSupport.cmake
+++ b/cmake/OpenCVPCHSupport.cmake
@@ -97,8 +97,8 @@ MACRO(_PCH_WRITE_PCHDEP_CXX _targetName _include_file _dephelp)
 
     set(${_dephelp} "${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch_dephelp.cxx")
     set(_content "")
-    if(EXISTS "${_dephelp}")
-      file(READ "${_dephelp}" _content)
+    if(EXISTS "${${_dephelp}}")
+      file(READ "${${_dephelp}}" _content)
     endif()
     set(_dummy_str
 "#include \"${_include_file}\"