https://bugs.gentoo.org/882271
Also change to automake file as consequence of eautoreconf
--- a/Makefile.in	2024-05-10 09:49:47.696279770 -0000
+++ b/Makefile.in	2024-05-10 09:50:14.532113463 -0000
@@ -144,13 +144,13 @@
 .PHONY: config
 config: ${SRC_DIR}/Makefile ${SRC_DIR}/config.h
 
-${SRC_DIR}/configure: ${SRC_DIR}/configure.in
+${SRC_DIR}/configure: ${SRC_DIR}/configure.ac
 	@${ECHO} "The configure script is out of date; rebuilding..."
 	autoconf
 	@${ECHO} >> ${SRC_DIR}/config.h.in
 	@${ECHO} >> $@
 
-${SRC_DIR}/config.h.in: ${SRC_DIR}/configure.in
+${SRC_DIR}/config.h.in: ${SRC_DIR}/configure.ac
 	@${ECHO} "The config.h.in header is out of date; rebuilding..."
 	autoheader
 	@${ECHO} >> $@
--- a/sound.c	2024-05-10 09:53:25.753928428 -0000
+++ b/sound.c	2024-05-10 09:54:18.646600643 -0000
@@ -51,6 +51,8 @@
 #ifdef HAVE_LINUX_SOUNDCARD_H
 # include <linux/soundcard.h>
 #endif
+
+#include <sys/ioctl.h>
 #include "extern.h"
 #include "options2.h"
 #include "constant.h"
--- a/victory.c	2024-05-10 09:53:25.752928434 -0000
+++ b/victory.c	2024-05-10 09:55:09.470285679 -0000
@@ -7,6 +7,9 @@
 # include <stdlib.h>
 #endif
 
+#include <string.h>
+#include <unistd.h>
+
 #include "constant.h"
 #include "extern.h"