From b5efb40ad746b008f86ee19c4e05bea420a114bc Mon Sep 17 00:00:00 2001
From: Mario Emmenlauer <mario@emmenlauer.de>
Date: Thu, 30 Jan 2020 09:58:21 +0100
Subject: [PATCH] CMakeLists.txt: Better handling of c++ standard. Set base
 level to c++11, but allow other versions

---
 CMakeLists.txt | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8eb29b03..0b3d3344 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,8 +8,13 @@ cmake_minimum_required(VERSION 3.1) # for "CMAKE_CXX_STANDARD" version
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake") # custom CMake modules like FindSQLiteCpp
 project(SQLiteCpp VERSION 2.99)
 
-# SQLiteC++ 3.x now requires C++11 compiler
-set(CMAKE_CXX_STANDARD 11)
+# SQLiteC++ 3.x requires C++11 features
+if (NOT CMAKE_CXX_STANDARD)
+    set(CMAKE_CXX_STANDARD 11)
+elseif (CMAKE_CXX_STANDARD LESS 11)
+    message(WARNING "CMAKE_CXX_STANDARD has been set to '${CMAKE_CXX_STANDARD}' which is lower than the minimum required standard (c++11).")
+endif ()
+message(STATUS "Using c++ standard c++${CMAKE_CXX_STANDARD}")
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 message (STATUS "CMake version: ${CMAKE_VERSION}")