From 276b56f01c757ef0fc8b08d2a55422c59b3f007c Mon Sep 17 00:00:00 2001
From: Alexander Neumann <Alexander.Neumann@hamburg.de>
Date: Fri, 7 Jun 2019 22:06:43 +0200
Subject: FindBLAS: Add second try for OpenBLAS with thread libraries.

Issue: #16221
---
 Modules/FindBLAS.cmake | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'Modules')

diff --git a/Modules/FindBLAS.cmake b/Modules/FindBLAS.cmake
index 65e5d1cd8a..77f9d0e40c 100644
--- a/Modules/FindBLAS.cmake
+++ b/Modules/FindBLAS.cmake
@@ -152,7 +152,9 @@ macro(Check_Fortran_Libraries LIBRARIES _prefix _name _flags _list _thread)
 
   foreach(_library ${_list})
     set(_combined_name ${_combined_name}_${_library})
-
+    if(NOT "${_thread}" STREQUAL "")
+      set(_combined_name ${_combined_name}_thread)
+    endif()
     if(_libraries_work)
       if (BLA_STATIC)
         if (WIN32)
@@ -479,6 +481,18 @@ if (BLA_VENDOR STREQUAL "OpenBLAS" OR BLA_VENDOR STREQUAL "All")
       ""
       )
   endif()
+  if(NOT BLAS_LIBRARIES)
+    find_package(Threads)
+    # OpenBLAS (http://www.openblas.net)
+    check_fortran_libraries(
+      BLAS_LIBRARIES
+      BLAS
+      sgemm
+      ""
+      "openblas"
+      "${CMAKE_THREAD_LIBS_INIT}"
+      )
+  endif()
 endif ()
 
 if (BLA_VENDOR STREQUAL "FLAME" OR BLA_VENDOR STREQUAL "All")
-- 
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