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post_install() {
  echo "On multi-core/thread systems libf77blas.so, libstcblas.so and"
  echo "liblapack.so.3.4.1 are single-threaded, libptcblas.so, libptf77blas.so"
  echo "and libptlapack.so.3.4.1 are multi-threaded. By default"
  echo "libcblas.so, libblas.so and liblapack.so point to the multi-threaded"
  echo "versions."
  echo "The default can be changed by making libcblas.so, libblas.so and"
  echo "liblapack.so.3 point to the single threaded libraries, i.e."
  echo ""
  echo "ln -sf libf77blas.so libblas.so; ln -sf libstcblas.so libcblas.so;"
  echo "ln -sf liblapack.so.3.4.1 liblapack.so.3"
}

post_upgrade() {
   post_install $1
}