From a3f74aaaafcccc7272c0cbd228337830f7973e98 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Fri, 30 Sep 2016 23:37:43 +0300
Subject: [PATCH] cmake: repair GCC PCH

---
 cmake/OpenCVPCHSupport.cmake | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cmake/OpenCVPCHSupport.cmake b/cmake/OpenCVPCHSupport.cmake
index a2df014a2e..aafda61ab2 100644
--- a/cmake/OpenCVPCHSupport.cmake
+++ b/cmake/OpenCVPCHSupport.cmake
@@ -291,6 +291,14 @@ MACRO(ADD_PRECOMPILED_HEADER _targetName _input)
 
     ADD_PRECOMPILED_HEADER_TO_TARGET(${_targetName} ${_input}  ${_output} ${_dowarn})
 
+
+    GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
+    if (oldProps MATCHES NOTFOUND)
+        SET(oldProps "")
+    endif()
+    SET(newProperties "${oldProps} -include \"${CMAKE_CURRENT_BINARY_DIR}/${_name}\"")
+    SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "${newProperties}")
+
 ENDMACRO(ADD_PRECOMPILED_HEADER)