<p>Hi, <a href="https://github.com/rcurtin" class="user-mention">@rcurtin</a> I had the same problem... Can you help me to analyze it? Thanks a lot!</p>

<hr>

<p>[ 20%] Built target mlpack<br>
Scanning dependencies of target mlpack_sparse_coding<br>
[ 20%] Building CXX object src/mlpack/methods/sparse_coding/CMakeFiles/mlpack_sparse_coding.dir/sparse_coding_main.cpp.o<br>
[ 21%] Linking CXX executable ../../../../bin/mlpack_sparse_coding<br>
../../../../lib/libmlpack.so.2.0: undefined reference to <code>wrapper_dgelsd_'<br>
../../../../lib/libmlpack.so.2.0: undefined reference to</code>wrapper_dgesvx_'<br>
../../../../lib/libmlpack.so.2.0: undefined reference to `wrapper_ilaenv_'<br>
collect2: error: ld returned 1 exit status<br>
make[2]: *** [bin/mlpack_sparse_coding] Error 1<br>
make[1]: *** [src/mlpack/methods/sparse_coding/CMakeFiles/mlpack_sparse_coding.dir/all] Error 2</p>

<h2>make: *** [all] Error 2</h2>

<p>The output of <em>ldd libarmadillo.so</em> is as follows:</p>

<hr>

<p>ldd libarmadillo.so<br>
    linux-vdso.so.1 =&gt;  (0x00007ffc4e7d4000)<br>
    libmkl_rt.so =&gt; /opt/intel/mkl/lib/intel64/libmkl_rt.so (0x00007f28cbdbd000)<br>
    libarpack.so.2 =&gt; /usr/lib/libarpack.so.2 (0x00007f28cbb26000)<br>
    libstdc++.so.6 =&gt; /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f28cb822000)<br>
    libm.so.6 =&gt; /lib/x86_64-linux-gnu/libm.so.6 (0x00007f28cb51c000)<br>
    libgcc_s.so.1 =&gt; /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f28cb305000)<br>
    libc.so.6 =&gt; /lib/x86_64-linux-gnu/libc.so.6 (0x00007f28caf40000)<br>
    /lib64/ld-linux-x86-64.so.2 (0x000055b0bb4c6000)<br>
    libdl.so.2 =&gt; /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f28cad3c000)<br>
    libblas.so.3 =&gt; /usr/lib/libblas.so.3 (0x00007f28c9532000)<br>
    liblapack.so.3 =&gt; /usr/lib/liblapack.so.3 (0x00007f28c8d96000)<br>
    libgfortran.so.3 =&gt; /usr/lib/x86_64-linux-gnu/libgfortran.so.3 (0x00007f28c8a7c000)<br>
    libpthread.so.0 =&gt; /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f28c885d000)</p>

<h2>    libquadmath.so.0 =&gt; /usr/lib/x86_64-linux-gnu/libquadmath.so.0 (0x00007f28c8621000)</h2>

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