The file $(top_srcdir)/gtk-doc.make doesn't exist, so don't include it.

--- a/doc/Makefile.in	2007-04-08 20:17:25.000000000 +0200
+++ b/doc/Makefile.in	2014-09-06 23:19:41.413397662 +0200
@@ -240,9 +240,6 @@
 distclean-generic clean-generic maintainer-clean-generic clean \
 mostlyclean distclean maintainer-clean
 
-
-include $(top_srcdir)/gtk-doc.make
-
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:
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<tr><td><span title='2023-03-27 16:39:53 +0100'>2023-03-27</span></td><td><a href='/guix/commit/gnu/packages/patchutils.scm?id=efbfda0dac514f73585d85268b3c2248b34668e3'>gnu: colordiff: Update to 1.0.21.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patchutils.scm (colordiff): Update to 1.0.21.

Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;
</span></span></td><td>Greg Hogan</td></tr>
<tr><td><span title='2023-03-05 08:17:57 +0100'>2023-03-05</span></td><td><a href='/guix/commit/gnu/packages/patchutils.scm?id=7fc415aba9444fff0f840892cf01f588d67e698c'>gnu: meld: Use new package style.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patchutils.scm (meld)[arguments]: Convert to list of
G-Expressions.
&lt;#:phases&gt;: Drop trailing #t.
[inputs, native-inputs]: Drop labels.

Signed-off-by: Liliana Marie Prikler &lt;liliana.prikler@gmail.com&gt;
</span></span></td><td>Andy Tai</td></tr>
<tr><td><span title='2023-03-05 08:17:56 +0100'>2023-03-05</span></td><td><a href='/guix/commit/gnu/packages/patchutils.scm?id=f9f9efc467ce8678e815d6aed848026b4ffdfbc9'>gnu: meld: Update to 3.22.0</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patchutils.scm (meld): Update to 3.22.0
[build-system]: Switch to meson-build-system.
[native-inputs]: Add desktop-file-utils, itstool, gobject-introspection,
pkg-config, and python.
[inputs]: Add bash-minimal, python, and python-pycairo.
Replace gtksourceview-3 with gtksourceview-4.
[arguments]: Add #:glib-or-gtk?, #:imported-modules, and #:modules.
&lt;#:phases&gt;: Remove custom ‘install’ and ‘check’.
Add ‘skip-gtk-update-icon-cache’.
Adjust ‘copy-styles’ to gtksourceview-4.
Replace ‘wrap-typelib’ with ‘python-and-gi-wrap’.

Signed-off-by: Liliana Marie Prikler &lt;liliana.prikler@gmail.com&gt;
</span></span></td><td>Andy Tai</td></tr>
<tr><td><span title='2022-09-11 12:35:29 +0200'>2022-09-11</span></td><td><a href='/guix/commit/gnu/packages/patchutils.scm?id=2e50fd2301ffc6d0d8bfeab87edb88cca88d0b9a'>gnu: Add wiggle.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patchutils.scm (wiggle): New variable.

Signed-off-by: Liliana Marie Prikler &lt;liliana.prikler@gmail.com&gt;
</span></span></td><td>jgart</td></tr>