From dbbbad40fb5cc5974979d0a0c667115752c89547 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Wed, 7 Dec 2016 13:16:44 +0300
Subject: [PATCH] build: eliminate ICC warnings

---
 cmake/OpenCVCompilerOptions.cmake | 6 ++++++
 modules/core/test/test_arithm.cpp | 6 +-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/cmake/OpenCVCompilerOptions.cmake b/cmake/OpenCVCompilerOptions.cmake
index 03592732e0..02443541d5 100644
--- a/cmake/OpenCVCompilerOptions.cmake
+++ b/cmake/OpenCVCompilerOptions.cmake
@@ -436,6 +436,12 @@ if(MSVC)
     ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4275) # non dll-interface class 'std::exception' used as base for dll-interface class 'cv::Exception'
     ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4589) # Constructor of abstract class 'cv::ORB' ignores initializer for virtual base class 'cv::Algorithm'
   endif()
+
+  if(CV_ICC AND NOT ENABLE_NOISY_WARNINGS)
+    foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG)
+      string(REGEX REPLACE "( |^)/W[0-9]+( |$)" "\\1\\2" ${flags} "${${flags}}")
+    endforeach()
+  endif()
 endif()
 
 if(APPLE AND NOT CMAKE_CROSSCOMPILING AND NOT DEFINED ENV{LDFLAGS} AND EXISTS "/usr/local/lib")
diff --git a/modules/core/test/test_arithm.cpp b/modules/core/test/test_arithm.cpp
index 0781fd1a3f..a23cee91dd 100644
--- a/modules/core/test/test_arithm.cpp
+++ b/modules/core/test/test_arithm.cpp
@@ -1,9 +1,5 @@
 #include "test_precomp.hpp"
 #include <cmath>
-#ifndef NAN
-#include <limits> // numeric_limits<T>::quiet_NaN()
-#define NAN std::numeric_limits<float>::quiet_NaN()
-#endif
 
 using namespace cv;
 using namespace std;
@@ -1895,7 +1891,7 @@ TEST(MinMaxLoc, regression_4955_nans)
     cv::Mat one_mat(2, 2, CV_32F, cv::Scalar(1));
     cv::minMaxLoc(one_mat, NULL, NULL, NULL, NULL);
 
-    cv::Mat nan_mat(2, 2, CV_32F, cv::Scalar(NAN));
+    cv::Mat nan_mat(2, 2, CV_32F, cv::Scalar(std::numeric_limits<float>::quiet_NaN()));
     cv::minMaxLoc(nan_mat, NULL, NULL, NULL, NULL);
 }