[Insight-users] [Community] explicitly instantiate vnl_sparse_matrix

[Matt McCormick]

Hi Wei,

It may need a "tickle".

For example,


$ cat Modules/ThirdParty/VNL/src/vxl/core/vnl/Templates/vnl_sparse_matrix+int-.cxx

#include <vnl/vnl_sparse_matrix.txx>

template class vnl_sparse_matrix<int>;

static int vnl_sparse_matrix_float_tickler()
{
  vnl_sparse_matrix<int> md(3, 5);
  vnl_sparse_matrix_float_tickler(); // to avoid compiler warning
  return md(0,0);
}


HTH,
Matt

On Tue, Oct 15, 2013 at 4:56 AM, Wei Liu <weiliu620 at gmail.com> wrote:
> Dear ITK users,
>
> Is there a method to explicitly instantiate vnl_sparse_matrix<bool>?
> I'm trying to define: vnl_sparse_matrix<bool> mymatrix, but get  error
>
> undefined reference to `vnl_sparse_matrix<bool>::vnl_sparse_matrix()'
>
> I tried to add
>
> template class vnl_sparse_matrix<bool>;
>
> on the top of my main.cxx but it doesn't work. I appreciate any insights.
>
> Wei
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