$NetBSD: patch-aq,v 1.5 2021/05/12 14:12:13 ryoon Exp $

--- src/pcm/pcm_hw.c.orig	2020-06-29 10:51:08.000000000 +0000
+++ src/pcm/pcm_hw.c
@@ -278,10 +278,11 @@ static int snd_pcm_hw_nonblock(snd_pcm_t
 
 static int snd_pcm_hw_async(snd_pcm_t *pcm, int sig, pid_t pid)
 {
-	long flags;
 	snd_pcm_hw_t *hw = pcm->private_data;
 	int fd = hw->fd, err;
 
+#ifndef __sun
+	long flags;
 	if ((flags = fcntl(fd, F_GETFL)) < 0) {
 		err = -errno;
 		SYSMSG("F_GETFL failed (%i)", err);
@@ -296,13 +297,16 @@ static int snd_pcm_hw_async(snd_pcm_t *p
 		SYSMSG("F_SETFL for O_ASYNC failed (%i)", err);
 		return err;
 	}
+#endif
 	if (sig < 0)
 		return 0;
+#ifndef __sun
 	if (fcntl(fd, F_SETSIG, (long)sig) < 0) {
 		err = -errno;
 		SYSMSG("F_SETSIG failed (%i)", err);
 		return err;
 	}
+#endif
 	if (fcntl(fd, F_SETOWN, (long)pid) < 0) {
 		err = -errno;
 		SYSMSG("F_SETOWN failed (%i)", err);
@@ -1555,8 +1559,10 @@ int snd_pcm_hw_open_fd(snd_pcm_t **pcmp,
 	mode = 0;
 	if (fmode & O_NONBLOCK)
 		mode |= SND_PCM_NONBLOCK;
+#ifndef __sun
 	if (fmode & O_ASYNC)
 		mode |= SND_PCM_ASYNC;
+#endif
 	if (fmode & O_APPEND)
 		mode |= SND_PCM_APPEND;
 
@@ -1705,8 +1711,10 @@ int snd_pcm_hw_open(snd_pcm_t **pcmp, co
 	fmode = O_RDWR;
 	if (mode & SND_PCM_NONBLOCK)
 		fmode |= O_NONBLOCK;
+#ifndef __sun
 	if (mode & SND_PCM_ASYNC)
 		fmode |= O_ASYNC;
+#endif
 	if (mode & SND_PCM_APPEND)
 		fmode |= O_APPEND;
 	fd = snd_open_device(filename, fmode);