From a56febcd13a4da8a62a55940b6edc7e8b9a79935 Mon Sep 17 00:00:00 2001
From: SChernykh <sergey.v.chernykh@gmail.com>
Date: Fri, 18 Oct 2019 17:39:57 +0200
Subject: [PATCH] Force HAVE_BUILTIN_CLEAR_CACHE for GNU compilers

They always have __builtin___clear_cache
---
 cmake/flags.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 97f22f3c..e9533eed 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -54,6 +54,8 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 
     #set(CMAKE_C_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -gdwarf-2")
 
+    add_definitions(/DHAVE_BUILTIN_CLEAR_CACHE)
+
 elseif (CMAKE_CXX_COMPILER_ID MATCHES MSVC)
 
     set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Ox /Ot /Oi /MT /GL")