From 77534e84b27701e371ccee780be5acffe7cced59 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 10 Mar 2015 14:49:40 -0400
Subject: [PATCH] Add options to build CMake without any language dialects

If CMake_NO_<LANG>_STANDARD is set, do not set CMAKE_<LANG>_STANDARD.
This will allow users to build with their own -std= flags without
CMake adding any itself.
---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1250a9477..d86ae96cc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,10 +37,10 @@ if("${CMake_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
 endif()
 
 # Use most-recent available language dialects with GNU and Clang
-if(NOT DEFINED CMAKE_C_STANDARD)
+if(NOT DEFINED CMAKE_C_STANDARD AND NOT CMake_NO_C_STANDARD)
   set(CMAKE_C_STANDARD 11)
 endif()
-if(NOT DEFINED CMAKE_CXX_STANDARD)
+if(NOT DEFINED CMAKE_CXX_STANDARD AND NOT CMake_NO_CXX_STANDARD)
   set(CMAKE_CXX_STANDARD 14)
 endif()