--- lib/fseeko.c.orig.port	Mon Nov 10 19:51:33 2025
+++ lib/fseeko.c	Sat Jan  3 11:54:53 2026
@@ -76,6 +76,8 @@
                      ? fp_->_bf._size
                      : 0)
       && fp_ub._base == NULL)
+#elif defined __OpenBSD__ /* recent version of OpenBSD */
+  if (0)	/* fseeko() is compatible with what gnulib expects */
 #elif defined __EMX__               /* emx+gcc */
   if (fp->_ptr == fp->_buffer
       && fp->_rcount == 0
