From 7a68756b2b129648f0b689f2f3849a72b43bf5af Mon Sep 17 00:00:00 2001
From: fwcd <fwcdmail@gmail.com>
Date: Sat, 6 Apr 2019 21:16:31 +0200
Subject: [PATCH] Add libc++ flag to top-level CMakeLists

---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ab801da..d0d8c385 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,4 +2,10 @@ cmake_minimum_required(VERSION 3.13)
 project(calculator CXX)
 set(CMAKE_CXX_STANDARD 17)
 
+if(CMAKE_CXX_COMPILER MATCHES ".*clang")
+    # Clang disagress with libstdc++ about constexpr-ness of wstring_view
+    # See https://github.com/Microsoft/calculator/pull/321
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+endif()
+
 add_subdirectory(src)