.html">regular expression filters</a> depend
      on <a href="../../regex/index.html" target="_top">Boost.Regex</a>, and
      the compressions filters rely on the third-party libraries zlib (<a class="bib_ref"
        name="gailly" href="bibliography.html#gailly">[Gailly]</a>),
      libbz2 (<a class="bib_ref" name="seward" href="bibliography.html#seward">[Seward]</a>),
      libzstd (<a class="bib_ref" name="seward" href="bibliography.html#Zstandard">[Zstandard]</a>),
      and liblzma (<a class="bib_ref