From c418b1d3f40855d068f34d6f9b8166962f0565e0 Mon Sep 17 00:00:00 2001
From: o-micron <omarsheriffathy@hotmail.com>
Date: Tue, 10 Mar 2020 04:12:35 +0200
Subject: [PATCH] Check for a bug fix on string_view and msvc 140 and 141

---
 CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 663bb864..e5e3cd83 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,16 @@ if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.1")
     set(CMAKE_CXX_STANDARD_REQUIRED OFF)
 endif()
 
+if(WIN32)
+  if(MSVC)
+    if(MSVC_TOOLSET_VERSION EQUAL 140 OR MSVC_TOOLSET_VERSION EQUAL 140)
+      # there is a bug reported on https://developercommunity.visualstudio.com/content/problem/9696/c17-not-available-by-default.html
+      # string_view is not available unless we use the /std:c++latest switch
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std:c++latest")
+    endif()
+  endif()
+endif()
+
 enable_testing()
 
 include(CMakeDependentOption)