This patch is borrowed from Debian's patches for plink

Author: Peter Green <plugwash@p10link.net>
Puropose: Fallback to endian.h if all else fails on 64bit machines
Closes: #528659
Forwarded: Shaun Purcell <plink@chgr.mgh.harvard.edu>
License: same as plink itself.
===================================================================
--- plink-1.06.orig/Rsrv.h	2009-05-15 03:35:29.000000000 +0100
+++ plink-1.06/Rsrv.h	2009-05-15 03:35:41.000000000 +0100
@@ -313,7 +313,18 @@
 #define __BIG_ENDIAN__ 1
 #define SWAPEND 1
 #elif ! defined Win32 /* Windows is little-endian is most cases, anywhere else we're stuck */
-#error "Cannot determine endianness. Make sure config.h is included or __{BIG|LITTLE}_ENDIAN__ is defined ."
+  //try endian.h before we finally bail out
+  #include <endian.h>
+  #if __BYTE_ORDER == __LITTLE_ENDIAN
+    #warning using little endian based on information from endian.h
+    #define __LITTLE_ENDIAN__ 1
+  #elif __BYTE_ORDER == __BIG_ENDIAN
+    #warning using big endian based on information from endian.h
+    #define __BIG_ENDIAN__ 1
+    #define SWAPEND 1
+  #else    
+    #error "Cannot determine endianness. Make sure config.h is included or __{BIG|LITTLE}_ENDIAN__ is defined ."
+  #endif    
 #endif
 
 /* FIXME: all the mess below needs more efficient implementation - the current one is so messy to work around alignment problems on some platforms like Sun and HP 9000 */
5978dd8e5702'>commit</a><a href='/guix/diff/gnu/home/services/dict.scm?id=999f90ec6caf0e95078bd6d446ef5978dd8e5702'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/home/services/dict.scm'>
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<tr><td><span title='2023-08-29 11:42:16 +0200'>2023-08-29</span></td><td><a href='/guix/commit/gnu/home/services/dict.scm?id=cf6abf50dbbbd95fef465ab4bb3b608843ac47e1'>home: services: dicod, syncthing: Import (gnu home services shepherd).</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/65510&gt;.

Without this import, 'shepherd-service-type' is not mapped, leading to
an error about missing 'system' target.

* gnu/home/services/dict.scm,
gnu/home/services/syncthing.scm: Add #:use-module clause.

Reported-by: Morgan Smith &lt;Morgan.J.Smith@outlook.com&gt;
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-08-20 22:48:47 +0200'>2023-08-20</span></td><td><a href='/guix/commit/gnu/home/services/dict.scm?id=1ce3424e22bc89e01f9cc3a2eb01232715495bd3'>home: services: Add dicod.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/home/services/dict.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* gnu/services/dict.scm (&lt;dicod-configuration&gt;)[home-service?]: New
field.
(dicod-shepherd-service): Do not map /dev/log when 'home-service?' is
true.  Remove 'user-processes' requirement when 'home-service?' is
true.
(dicod-shepherd-service): Set #:user and #:group to #f when
'home-service?' is true.
* doc/guix.texi (Miscellaneous Home Services): New node.
(Miscellaneous Services): Add cross-reference.
</span></span></td><td>Ludovic Courtès</td></tr>