diff --git a/pkg-config-guide.html b/pkg-config-guide.html
index c666fe5..ffbf169 100644
--- a/pkg-config-guide.html
+++ b/pkg-config-guide.html
@@ -360,6 +360,15 @@ $ pkg-config --modversion hello
     <tt>pkg-config --cflags</tt> and <tt>pkg-config --libs</tt>.</li>
   </ul>
 
+  <p><a href="https://www.gnu.org/software/autoconf-archive/">autoconf-archive</a>
+  contains additional macros useful for <tt>pkg-config</tt> handling.</p>
+
+  <p>With the <a href="https://cmake.org/">CMake</a> build system you can use
+  the <tt>FindPkgConfig</tt> module.</p>
+
+  <p>With the <a href="https://mesonbuild.com/">Meson</a> build system you can
+  use the <tt>Pkgconfig</tt> module.</p>
+
   <!--<h2><a name="examples">Examples</a></h2>-->
   <h2><a name="faq">Frequently asked questions</a></h2>