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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<div class='path'>path: <a href='/guix/log/?id=ee4f843e4673802a5b927cba762db60c110b4561'>root</a>/<a href='/guix/log/gnu?id=ee4f843e4673802a5b927cba762db60c110b4561'>gnu</a>/<a href='/guix/log/gnu/packages?id=ee4f843e4673802a5b927cba762db60c110b4561'>packages</a>/<a href='/guix/log/gnu/packages/dbm.scm?id=ee4f843e4673802a5b927cba762db60c110b4561'>dbm.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/dbm.scm?id=ee4f843e4673802a5b927cba762db60c110b4561&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-01-30 12:39:40 +0200'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=4cf1acc7f3033b50b0bf19e02c9f522d522d338c'>Merge remote-tracking branch 'origin/master' into core-updates</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-10-08 12:02:19 +0100'>2022-10-08</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=14afaa5381b1185bf9e3701ff09c5bab12dacfab'>gnu: bdb: Fix targeting riscv64.</a><span class='msg-avail'>...</span></td><td>Lu Hui</td></tr>
<tr><td><span title='2022-06-26 22:58:34 +0200'>2022-06-26</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=cac8545b023436bbf31fa74832a6d8954a25eb8f'>gnu: gdbm: Update to 1.23.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-10-10 16:22:40 +0300'>2021-10-10</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=b591052866e3956b543d130362d2f12fee0255e8'>gnu: bdb: Fix building on riscv64-linux.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-09-20 11:15:06 +0000'>2021-09-20</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=0d7888acf0791d1260ebf3f37ec50ad1dfcf359e'>gnu: bdb: Fix cross-compilation build errors.</a><span class='msg-avail'>...</span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-07-23 17:26:43 +0200'>2021-07-23</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=f94a0ce61ff89ad69c1ea327bb4ea763f0d5b2c0'>gnu: gdbm: Update to 1.20.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-07-18 19:50:01 +0200'>2021-07-18</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=0e47fcced442d8e7c1b05184fdc1c14f10ed04ec'>Merge branch 'master' into core-updates</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-07-17 19:40:57 +0200'>2021-07-17</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=3918d6c4b6858dbc17ef1110ac2301d28238bb73'>gnu: gdbm: Use HTTPS home page.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-03-24 20:50:44 +0200'>2021-03-24</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=2aab587f842908a886e3bd08b028885dddd650e0'>Merge remote-tracking branch 'origin/master' into core-updates</a></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-03-23 23:19:56 -0700'>2021-03-23</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=4cc2d2aa59910fcfd057bdee162bb96989b5a523'>gnu: bdb-4.8: Fix configure on powerpc64le-linux.</a><span class='msg-avail'>...</span></td><td>Leo Le Bouter</td></tr>
<tr><td><span title='2020-12-27 18:44:57 +0100'>2020-12-27</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=951610567f623512a88ac20b879e00d442f85abe'>gnu: gdbm: Update to 1.19.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-12-17 00:15:48 +0100'>2020-12-17</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=420ddd0a91d50b3d37003638af8dc19bbef02c01'>gnu: gdbm: Fix build with GCC 10.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-12-17 00:15:48 +0100'>2020-12-17</span></td><td><a href='/guix/commit/gnu/packages/dbm.scm?id=04496dc5743d54134405c604ca863ce913283a0e'>gnu: bdb: Fix building with GCC 9.</a><span class='msg-avail'>...</span></td><td>Jakub Kądziołka</td></tr>