From 9875f5980a4b881e0d5479973a66c65c5b560103 Mon Sep 17 00:00:00 2001
From: Sérgio M. Basto <sergio@serjux.com>
Date: Jan 26 2018 17:29:13 +0000
Subject: Add patch50


---

diff --git a/476c513447eb16784113e982f6bef0dcabb77732.patch b/476c513447eb16784113e982f6bef0dcabb77732.patch
new file mode 100644
index 0000000..08b709a
--- /dev/null
+++ b/476c513447eb16784113e982f6bef0dcabb77732.patch
@@ -0,0 +1,86 @@
+From 5f80e42dac5f186d8b5fe9c64d700db26e5753e7 Mon Sep 17 00:00:00 2001
+From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
+Date: Sat, 28 Oct 2017 02:22:21 +0300
+Subject: [PATCH] cmake: update OpenBLAS support
+
+- reorder path HINTS to avoid conflicts with other LAPACK libraries
+- add extern "C" { } to avoid generation of C++ symbols
+---
+ cmake/OpenCVFindLAPACK.cmake   |  3 ++-
+ cmake/OpenCVFindOpenBLAS.cmake | 34 +++++++++++++++++-----------------
+ 2 files changed, 19 insertions(+), 18 deletions(-)
+
+diff --git a/cmake/OpenCVFindLAPACK.cmake b/cmake/OpenCVFindLAPACK.cmake
+index 6a686c6cdc8..f5fce672568 100644
+--- a/cmake/OpenCVFindLAPACK.cmake
++++ b/cmake/OpenCVFindLAPACK.cmake
+@@ -31,10 +31,11 @@ macro(ocv_lapack_check)
+   else()
+     # adding proxy opencv_lapack.h header
+     set(CBLAS_H_PROXY_PATH ${CMAKE_BINARY_DIR}/opencv_lapack.h)
+-    set(_lapack_include_str "\#include \"${OPENCV_CBLAS_H_PATH_${_lapack_impl}}\"")
++    set(_lapack_include_str "extern \"C\" {\n\#include \"${OPENCV_CBLAS_H_PATH_${_lapack_impl}}\"")
+     if(NOT "${OPENCV_CBLAS_H_PATH_${_lapack_impl}}" STREQUAL "${OPENCV_LAPACKE_H_PATH_${_lapack_impl}}")
+       set(_lapack_include_str "${_lapack_include_str}\n#include \"${OPENCV_LAPACKE_H_PATH_${_lapack_impl}}\"")
+     endif()
++    set(_lapack_include_str "${_lapack_include_str}\n}\n")
+     # update file contents (if required)
+     set(__content_str "")
+     if(EXISTS "${CBLAS_H_PROXY_PATH}")
+diff --git a/cmake/OpenCVFindOpenBLAS.cmake b/cmake/OpenCVFindOpenBLAS.cmake
+index 60594dee46a..ae2daaa194f 100644
+--- a/cmake/OpenCVFindOpenBLAS.cmake
++++ b/cmake/OpenCVFindOpenBLAS.cmake
+@@ -44,35 +44,35 @@
+ #license and copyright terms herein.
+ 
+ SET(Open_BLAS_INCLUDE_SEARCH_PATHS
+-  /usr/include
++  $ENV{OpenBLAS_HOME}
++  $ENV{OpenBLAS_HOME}/include
++  /opt/OpenBLAS/include
++  /usr/local/include/openblas
+   /usr/include/openblas
++  /usr/local/include/openblas-base
+   /usr/include/openblas-base
+   /usr/local/include
+-  /usr/local/include/openblas
+-  /usr/local/include/openblas-base
+-  /opt/OpenBLAS/include
+-  $ENV{OpenBLAS_HOME}
+-  $ENV{OpenBLAS_HOME}/include
++  /usr/include
+ )
+ 
+ SET(Open_BLAS_LIB_SEARCH_PATHS
+-        /lib/
+-        /lib/openblas-base
+-        /lib64/
+-        /usr/lib
+-        /usr/lib/openblas-base
+-        /usr/lib64
+-        /usr/local/lib
+-        /usr/local/lib64
+-        /opt/OpenBLAS/lib
+         $ENV{OpenBLAS}cd
+         $ENV{OpenBLAS}/lib
+         $ENV{OpenBLAS_HOME}
+         $ENV{OpenBLAS_HOME}/lib
++        /opt/OpenBLAS/lib
++        /usr/local/lib64
++        /usr/local/lib
++        /lib/openblas-base
++        /lib64/
++        /lib/
++        /usr/lib/openblas-base
++        /usr/lib64
++        /usr/lib
+  )
+ 
+-FIND_PATH(OpenBLAS_INCLUDE_DIR NAMES cblas.h PATHS ${Open_BLAS_INCLUDE_SEARCH_PATHS})
+-FIND_LIBRARY(OpenBLAS_LIB NAMES openblas PATHS ${Open_BLAS_LIB_SEARCH_PATHS})
++FIND_PATH(OpenBLAS_INCLUDE_DIR NAMES cblas.h PATHS ${Open_BLAS_INCLUDE_SEARCH_PATHS} NO_DEFAULT_PATH)
++FIND_LIBRARY(OpenBLAS_LIB NAMES openblas PATHS ${Open_BLAS_LIB_SEARCH_PATHS}  NO_DEFAULT_PATH)
+ 
+ SET(OpenBLAS_FOUND ON)
+ 
diff --git a/opencv.spec b/opencv.spec
index 046c28e..bbaddbe 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -68,8 +68,8 @@ Patch2:         opencv-3.1-pillow.patch
 Patch3:         opencv-3.2.0-test-file-fix.patch
 # Backport patch, update OpenBLAS support
 # https://github.com/opencv/opencv/pull/9955
-# https://github.com/opencv/opencv/commit/476c513447eb16784113e982f6bef0dcabb77732.diff
-Patch50:        476c513447eb16784113e982f6bef0dcabb77732.diff
+# https://github.com/opencv/opencv/commit/476c513447eb16784113e982f6bef0dcabb77732.patch
+Patch50:        476c513447eb16784113e982f6bef0dcabb77732.patch
 
 BuildRequires:  libtool
 BuildRequires:  cmake >= 2.6.3