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Ublas :

From: e r (erwann.rogard_at_[hidden])
Date: 2007-10-05 23:58:55


i looked at previous posts on this topic. did not help, a suggestion
would be appreciated:

installed atlas version 3.6.0-20.6

/usr/lib/atlas3-test runs just fine.

header cblas.h and clapack.h are in /usr/include/ which is by default in
my include path.


i'm trying to run the program:

 #include <boost/numeric/bindings/atlas/clapack.hpp>
 #include <boost/numeric/bindings/traits/ublas_matrix.hpp>
 #include <boost/numeric/bindings/traits/std_vector.hpp>
// #include <atlas/cblas.h>

 namespace ublas = boost::numeric::ublas;
 namespace atlas = boost::numeric::bindings::atlas;

 int main() {
      std::size_t n = 5;
      ublas::matrix<double> a(n, n);
      // fill matrix A

      std::vector<int> ipiv (n); // pivot vector
      atlas::lu_factor (a, ipiv); // alias for getrf()
      atlas::lu_invert (a, ipiv); // alias for getri()

      return 0;

i get the error

Building target: testing_numeric_bindings
Invoking: GCC C++ Linker
g++ -L/usr/lib/atlas -o"testing_numeric_bindings" ./main.o -llapack
./main.o: In function
`boost::numeric::bindings::atlas::detail::getrf(CBLAS_ORDER, int, int,
double*, int, int*)':
undefined reference to `clapack_dgetrf'
./main.o: In function
`boost::numeric::bindings::atlas::detail::getri(CBLAS_ORDER, int,
double*, int, int const*)':
undefined reference to `clapack_dgetri'
collect2: ld returned 1 exit status
make: *** [testing_numeric_bindings] Error 1
make: Target `all' not remade because of errors.
Build complete for project testing_numeric_bindings