title: MatConvNet is not compiling for GPUs
body: <p>I have the following problem when I want to compile matconvnet for GPUS:</p>
  
  <blockquote>
    <blockquote>
      <p>vl_compilenn('enableGpu', true)</p>
    </blockquote>
  </blockquote>
  
  <pre><code>vl_compilenn:   CUDA: MEX config file: '/home/anselmo/Experimentos-Impressora-DeepLearning/matconvnet-master/matlab/src/config/mex_CUDA_glnxa64.sh'
  
  mex:  no file name given.
  
  Usage:
    MEX [option1 ... optionN] sourcefile1 [... sourcefileN]
    [objectfile1 ... objectfileN] [libraryfile1 ... libraryfileN]
  
   Use the -help option for more information, or consult the MATLAB External Interfaces Guide.
  
   Error using mex (line 206)
   Unable to complete successfully.
  
   Error in vl_compilenn&gt;mex_compile (line 434) 
   mex(mopts{:}) ;
  
   Error in vl_compilenn&gt;(parfor body) (line 393)
   mex_compile(opts, srcs{i}, toobj(bld_dir,srcs{i}), flags.mexcu) ;
  
   Error in parallel_function (line 470)
      F(base, limit, supply(base, limit));
  
   Error in vl_compilenn (line 387)
   parfor i = 1:numel(horzcat(lib_src, mex_src))
  
   509         rethrow(E)
  </code></pre>
  
  <p>What can be happening?</p>