From 15f4a06cd4ba98e600a93b8bd756fa80f72ac38d Mon Sep 17 00:00:00 2001
From: Nicolas Hake <isilkor@openclonk.org>
Date: Mon, 31 Dec 2018 12:15:49 +0100
Subject: [PATCH] CMake: Require C++14 support

CMake now supports compiler features (including language level), so
we can directly require C++14 instead of testing for compiler-
specific flags.
---
 CMakeLists.txt | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 66ecb994a..40305a01f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,13 +55,8 @@ set_property(GLOBAL PROPERTY USE_FOLDERS ${PROJECT_FOLDERS})
 ############################################################################
 include(CheckCXXCompilerFlag)
 
-# Required for CMake >= 3.1.0 and Qt >= 5.7
 set(CMAKE_CXX_STANDARD 14)
-
-CHECK_CXX_COMPILER_FLAG("-std=gnu++14" USE_GCC_STD_14)
-if(USE_GCC_STD_14)
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++14")
-endif()
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # Enable link-time code generation. We have to do this manually because while
 # there is a INTERPROCEDURAL_OPTIMIZATION cmake flag, it's only implemented