From 8954e627395a514f3be2ce8d92334687de07557b Mon Sep 17 00:00:00 2001
From: Shahram Najm <masn@ecmwf.int>
Date: Mon, 1 Aug 2022 21:38:23 +0100
Subject: [PATCH] Cray compiler: Enable ISO C++ 2011 standard

---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index df0920c04..5b0d5c5ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,6 +70,9 @@ ecbuild_add_option( FEATURE EXPERIMENTAL_BUILD_WITH_CXX
     DEFAULT OFF )
 if( HAVE_EXPERIMENTAL_BUILD_WITH_CXX )
     enable_language( CXX )
+    if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Cray" )
+        set(CMAKE_CXX_FLAGS "-hstd=c++11 ${CMAKE_CXX_FLAGS}")
+    endif()
 endif()
 
 ecbuild_add_option( FEATURE PRODUCT_GRIB