From 20a13c829d4538fe7674c6f677d6c836728cbf01 Mon Sep 17 00:00:00 2001
From: cryptocode <stein@nano.org>
Date: Tue, 25 Feb 2020 23:32:32 +0100
Subject: [PATCH] Use C++17 locally, C++14 on CI (#2597)

Co-authored-by: Russel Waters <russel@nano.org>

Co-authored-by: Russel Waters <vaelstrom@gmail.com>
---
 CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a67294ef..e19ba83d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -170,7 +170,11 @@ set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 #set(CMAKE_C_EXTENSIONS OFF)
 
-set(CMAKE_CXX_STANDARD 14)
+set(NANO_SUPPORTED_CPP_STANDARD "17" CACHE STRING "Supported C++ standard (14 or 17)")
+if (CI_BUILD OR CI_TEST)
+	set(NANO_SUPPORTED_CPP_STANDARD "14")
+endif()
+set(CMAKE_CXX_STANDARD ${NANO_SUPPORTED_CPP_STANDARD})
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 #set(CMAKE_CXX_EXTENSIONS OFF)