c++11 test corrected

AMDiS/cmake/enable_cxx11.cmake

@@ -5,7 +5,14 @@ include(CheckIncludeFileCXX)
 if (ENABLE_CXX11)
   check_cxx_compiler_flag("-std=c++11" COMPILER_SUPPORTS_CXX11_FLAG)
 
-  set(CXX11_CODE "#include <tuple>\\n#include <array>\\ntemplate<class... T> using std::tuple<T...>;int main(){decltype(1) vec[]={1,2,3}; for(auto&& x:vec);}")
+  set(CXX11_CODE "
+  #include <array>
+  #include <tuple>
+  template <class... T> using A = std::tuple<T...>;
+  int main(){
+    decltype(1) vec[]={1,2,3};
+    for(auto&& x:vec);
+  }")
 
   if (COMPILER_SUPPORTS_CXX11_FLAG)
     set(CMAKE_REQUIRED_FLAGS "-std=c++11")

AMDiS/cmake3/test_compile_features.cmake

@@ -4,7 +4,14 @@ include(CheckCXXSourceCompiles)
 macro(target_enable_cxx11 RESULT_VAR _TARGET_ _SCOPE_)
   check_cxx_compiler_flag("-std=c++11" COMPILER_SUPPORTS_CXX11_FLAG)
 
-  set(CXX11_CODE "#include <tuple>\\n#include <array>\\ntemplate<class... T> using std::tuple<T...>;int main(){decltype(1) vec[]={1,2,3}; for(auto&& x:vec);}")
+  set(CXX11_CODE "
+  #include <array>
+  #include <tuple>
+  template <class... T> using A = std::tuple<T...>;
+  int main(){
+    decltype(1) vec[]={1,2,3};
+    for(auto&& x:vec);
+  }")
 
   if (COMPILER_SUPPORTS_CXX11_FLAG)
     set(CMAKE_REQUIRED_FLAGS "-std=c++11")