title: How to link Intel MKL library, just cblas_dgemm function is used
body: <p>I want to test <code>Intel MKL</code> matrix multiplication, So I include  and I just use the  cblas_dgemm function, but it always says </p>
  
  <pre><code>    undefined reference to `cblas_dgemm'
  </code></pre>
  
  <p>I also link the <code>-lmkl_core -lmkl_blas95_lp64 -lmkl_lapack95_lp64</code>, But I have testes many combinations among the libraries in the <code>$MKLROOT/lib/intel64/</code> directory, the error still exists. Could someone give me some advice, please? Thanks.</p>