diff -uNr wget-1.21.2/lib/freading.c wget-1.21.2.b/lib/freading.c
--- wget-1.21.2/lib/freading.c	2021-09-07 21:59:08.000000000 +0300
+++ wget-1.21.2.b/lib/freading.c	2021-12-13 14:33:29.421006123 +0300
@@ -14,6 +14,9 @@
    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
+#include <sys/types.h>
+#include <bits/struct_file.h>
+
 #include <config.h>
 
 /* Specification.  */

diff -uNr wget-1.21.2/lib/stdio-impl.h wget-1.21.2.b/lib/stdio-impl.h
--- wget-1.21.2/lib/stdio-impl.h	2021-09-07 21:59:09.000000000 +0300
+++ wget-1.21.2.b/lib/stdio-impl.h	2021-12-13 14:59:23.341455180 +0300
@@ -38,6 +38,8 @@
 #endif
 
 #include <errno.h>                             /* For detecting Plan9.  */
+#include <sys/types.h>
+#include <bits/struct_file.h>
 
 #if defined __sferror || defined __DragonFly__ || defined __ANDROID__
   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */