From d5a2043fd3cae23aa5802e59e685aa4261199408 Mon Sep 17 00:00:00 2001
From: Jeremy Rifkin <51220084+jeremy-rifkin@users.noreply.github.com>
Date: Mon, 30 Dec 2024 22:41:54 -0600
Subject: [PATCH] Set C++ standard for old compiler versions in check_support,
 fixes #200

---
 cmake/Autoconfig.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/Autoconfig.cmake b/cmake/Autoconfig.cmake
index 148577d..833b1ef 100644
--- a/cmake/Autoconfig.cmake
+++ b/cmake/Autoconfig.cmake
@@ -4,6 +4,8 @@ function(check_support var source includes libraries definitions)
   list(APPEND CMAKE_REQUIRED_INCLUDES "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
   set(CMAKE_REQUIRED_LIBRARIES "${libraries}")
   set(CMAKE_REQUIRED_DEFINITIONS "${definitions}")
+  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
   string(CONCAT full_source "#include \"${source}\"" ${nonce})
   check_cxx_source_compiles(${full_source} ${var})
   set(${var} ${${var}} PARENT_SCOPE)