s/threads.c</code> for more detail.
</p>
<p>You can compile FFTW with <em>both</em> <code>--enable-threads</code> and
<code>--enable-openmp</code> at the same time, since they install libraries
with different names (&lsquo;<samp>fftw3_threads</samp>&rsquo; and &lsquo;<samp>fftw3_omp</samp>&rsquo;, as
described below).  However, your programs may only link to <em>one</em>
of these two libraries at a time.
</p>
<p>Ideally, of course, you should also have multiple processors in order to
get any benefit from th