From 0dffbb93def3bd7922da7bd38ba9f8d19c49da17 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Tue, 20 May 2014 16:42:54 +0200
Subject: [PATCH] Features: Ensure that list exists to remove from.

---
 Modules/CMakeDetermineCompileFeatures.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/CMakeDetermineCompileFeatures.cmake b/Modules/CMakeDetermineCompileFeatures.cmake
index 376291284..da68e94be 100644
--- a/Modules/CMakeDetermineCompileFeatures.cmake
+++ b/Modules/CMakeDetermineCompileFeatures.cmake
@@ -67,7 +67,7 @@ function(cmake_determine_compile_features lang)
       return()
     endif()
 
-    if (CMAKE_CXX98_COMPILE_FEATURES)
+    if (CMAKE_CXX11_COMPILE_FEATURES AND CMAKE_CXX98_COMPILE_FEATURES)
       list(REMOVE_ITEM CMAKE_CXX11_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES})
     endif()