This following patch was originally found at the debian mingw-w64 team's
mingw-w64 repo located here:
https://salsa.debian.org/mingw-w64-team/mingw-w64.git

Invoke the following in the aforementioned repo to see the original patch:

  $ git show 9a33f50:debian/patches/reproducible-build.patch

Description: Drop __DATE__ from gendef and genlib
Author: Stephen Kitt <skitt@debian.org>

This allows gendef and genlib to be built reproducibly.

--- a/mingw-w64-tools/gendef/src/gendef.c
+++ b/mingw-w64-tools/gendef/src/gendef.c
@@ -196,7 +196,6 @@
                    "  By default, the output files are named after their DLL counterparts\n"
                    "  gendef MYDLL.DLL     Produces MYDLL.def\n"
                    "  gendef - MYDLL.DLL   Prints the exports to stdout\n");
-  fprintf (stderr, "\nBuilt on %s\n", __DATE__);
   fprintf (stderr, "\nReport bugs to <mingw-w64-public@lists.sourceforge.net>\n");
   exit (0);
 }
--- a/mingw-w64-tools/genlib/src/genlib.c
+++ b/mingw-w64-tools/genlib/src/genlib.c
@@ -123,7 +123,6 @@
 "Usage example:\n"
 "  By default, the output file is named after the DLL counterpart\n"
 "  genlib mydef.def    Produces libmydll.a\n"
-"\nBuilt on " __DATE__ "\n"
 "\nReport bugs to <martellmalone@gmail.com>\n"
 ;

f6105afc67a15a491a0a4fd18a28c9f801a0b94'>tree</a><a href='/guix/commit/etc/guix-daemon.cil.in?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94'>commit</a><a href='/guix/diff/etc/guix-daemon.cil.in?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/etc/guix-daemon.cil.in'>
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<div class='path'>path: <a href='/guix/log/?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94'>root</a>/<a href='/guix/log/etc?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94'>etc</a>/<a href='/guix/log/etc/guix-daemon.cil.in?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94'>guix-daemon.cil.in</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/etc/guix-daemon.cil.in?id=af6105afc67a15a491a0a4fd18a28c9f801a0b94&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-05-25 12:51:15 +0200'>2023-05-25</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=3bf612eaa13cc39caab64567660b8a02d206d19a'>etc: SELinux: Update policy file.</a><span class='msg-avail'>...<span class='msg-tooltip'>Tested on Rocky Linux 9, as discussed
at &lt;https://issues.guix.gnu.org/62487&gt;.

* etc/guix-daemon.cil.in: Add rules for /gnu/store remount and file
creation in /tmp.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-12-23 20:20:06 +0100'>2022-12-23</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=afaeb657b118e6998342110deab8c8110b824417'>etc: SELinux: Allow init process to setattr on profile directories.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in: Add rule.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-12-23 20:20:06 +0100'>2022-12-23</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=4a134ed32e69ba888d988d2ed924a1531a54551b'>etc: SELinux: Allow daemon to search run state directories.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in: Import types init_var_run_t and
system_dbusd_var_run_t; add rules.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-12-23 20:20:06 +0100'>2022-12-23</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=f28d792719abb82cc920486e6d6f14eacc44370c'>etc: SELinux: Label guix-daemon executable in profile.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in: Add file rule for "guix-daemon" in current-guix
profile.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-01-26 09:31:45 +0100'>2022-01-26</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=bbc2fb0d52128c85c92251ed36d8063b3dcf3c3a'>etc: Remove redundant SELinux permissions block.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in (guix_daemon): Consolidate two blocks adding
sock_file permissions on guix_daemon_conf_t.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-01-24 11:28:14 +0100'>2022-01-24</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=98e74d520a30d1ed7d7b47d4f1d9afadefc699e3'>etc: Add more SELinux permissions for the daemon.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in (guix_daemon): Permit write on guix_daemon_conf_t
sock_file, necessary for garbage collection.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-05-22 19:53:17 +0200'>2021-05-22</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=35bd94a49257bbadcb3ca25342e5c1ec33f438f0'>etc: Add more SELinux permissions for the daemon.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in (guix_daemon): Add more permissions, necessary for
garbage collection.
</span></span></td><td>Marius Bakke</td></tr>