From 2f149cb0da0e2be47987e0fda265059c24128366 Mon Sep 17 00:00:00 2001
From: Muhammad Tanvir <muhammad.tanvir@codeplay.com>
Date: Tue, 27 Feb 2024 16:41:16 +0000
Subject: [PATCH] FIx error when building with oneAPI release compiler (#497)

---
 benchmark/portblas/CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/benchmark/portblas/CMakeLists.txt b/benchmark/portblas/CMakeLists.txt
index daaeb4674..f309286b3 100644
--- a/benchmark/portblas/CMakeLists.txt
+++ b/benchmark/portblas/CMakeLists.txt
@@ -26,6 +26,15 @@ if(BLAS_VERIFY_BENCHMARK)
   find_package(SystemBLAS REQUIRED)
 endif()
 
+# update CXX_FLAGS to avoid error when building benchmarks
+# in case of icpx compiler: 
+# explicit comparison with NaN in fast floating point mode [-Werror,-Wtautological-constant-compare]
+# https://github.com/dealii/dealii/issues/14693
+string(FIND ${CMAKE_CXX_COMPILER} "icpx" found_icpx)
+if(${found_icpx} GREATER -1)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=tautological-constant-compare")
+endif()
+
 set(sources
   # Level 1 blas
   blas1/axpy.cpp