[Dune] dune-istl-2.4.1 and boost 1.61

[Mladen Jurak]

  Dear all,

I would like to signal that dune-istl-2.4.1 does not compile with boost 
library
version 1.61. With  libboost1.61-dev (on Debian) it gives the following 
compilation error:

Code/Dune/release-2.4.1/dune-core-src/dune-istl-2.4.1/dune/istl/multitypeblockvector.hh:100:32: 
error: no match for ‘operator=’ (operand types are 
‘boost::fusion::void_’ and ‘const int’)
        fusion::at_c<count-1>(a) = b; //equalize current elements
        ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from 
/usr/include/boost/fusion/support/detail/segmented_fold_until_impl.hpp:18:0,
                  from 
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_begin_impl.hpp:16,
                  from 
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_begin.hpp:11,
                  from 
/usr/include/boost/fusion/sequence/intrinsic/begin.hpp:18,
                  from 
/usr/include/boost/fusion/sequence/comparison/equal_to.hpp:12,
                  from /usr/include/boost/fusion/sequence/comparison.hpp:11,
                  from /usr/include/boost/fusion/sequence.hpp:12,
                  from 
/home/jurak/Code/Dune/release-2.4.1/dune-core-src/dune-istl-2.4.1/dune/istl/multitypeblockvector.hh:17,
                  from 
/home/jurak/Code/Dune/release-2.4.1/dune-core-src/dune-istl-2.4.1/dune/istl/gsetc.hh:11,
                  from 
/home/jurak/Code/Dune/release-2.4.1/dune-core-src/dune-istl-2.4.1/dune/istl/tutorial/example.cc:23:
/usr/include/boost/fusion/support/void.hpp:12:12: note: candidate: 
constexpr boost::fusion::void_& boost::fusion::void_::operator=(const 
boost::fusion::void_&)
      struct void_ {};
             ^~~~~
/usr/include/boost/fusion/support/void.hpp:12:12: note: no known 
conversion for argument 1 from ‘const int’ to ‘const boost::fusion::void_&’
/usr/include/boost/fusion/support/void.hpp:12:12: note: candidate: 
constexpr boost::fusion::void_& 
boost::fusion::void_::operator=(boost::fusion::void_&&)
/usr/include/boost/fusion/support/void.hpp:12:12: note: no known 
conversion for argument 1 from ‘const int’ to ‘boost::fusion::void_&&’

Regards,
Mladen