#
# This file is part of the GROMACS molecular simulation package.
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include(CheckCXXSourceCompiles)
MACRO(GMX_TEST_CXX11 VARIABLE FLAG)
    if(WIN32)
        set(CXX11_FLAG "/Qstd=c++0x")
    elseif(CYGWIN)
        set(CXX11_FLAG "-std=gnu++0x") #required for strdup
    else()
        set(CXX11_FLAG "-std=c++0x")
    endif()
    CHECK_CXX_COMPILER_FLAG("${CXX11_FLAG}" CXXFLAG_STD_CXX0X)
    if(NOT CXXFLAG_STD_CXX0X)
        set(CXX11_FLAG "")
    endif()
    set(CMAKE_REQUIRED_DEFINITIONS "${CXX11_FLAG}")
    check_cxx_source_compiles(
"#include <vector>
#include <memory>
#include <utility>
struct A {
  A(int *i=NULL) : p(i) {} ;
  std::unique_ptr<int> p;
};
template <typename Head, typename... Tail>
struct VarList {
  typedef VarList<Tail...> VarListTail;
  typedef std::pair<Head, typename VarListTail::ListType> ListType;
};
int main() {
  typedef std::unique_ptr<int> intPointer;
  intPointer p(new int(10));
  std::vector<intPointer> v;
  v.push_back(std::move(p));
  std::vector<A> v2;
  v2.push_back(A());  //requires default move constructor
  v2.push_back(A(new int(5))); //detects bug in ICC
}" ${VARIABLE})
    set(CMAKE_REQUIRED_DEFINITIONS "")
    if(${VARIABLE})
        set(${FLAG} ${CXX11_FLAG})
    endif()
ENDMACRO()