title: Retrieve intermediate files generated by preprocessor
body: <p>How could I retrieve the intermediate files generated by the preprocessor, using GNU compiler?</p>
  
  <p>I typically have Fortran sources that I compile with <code>-x f95-cpp-input</code> option for preprocessing, and I would like to retrieve the result. I tested different things, including using the <code>-save-temps</code> option (but the output is not really human-readable) and the <code>-fdump-fortran-original</code> option (that I found already too strongly modified by the compiler to be useful). I had a look in the GNU documentation, but could not find anything more useful.</p>
  
  <p>Any hint would be appreciated!</p>