#include	"u.h"#include	"lib.h"#include	"mem.h"#include	"dat.h"#include	"fns.h"#include	"error.h"#include	"devaudio.h" voidaudiodevopen(int dev){	error("no audio support");} voidaudiodevclose(int dev){	error("no audio support");} intaudiodevread(int dev, void *a, int n){	error("no audio support");	return -1;} intaudiodevwrite(int dev, void *a, int n){	error("no audio support");	return -1;} voidaudiodevsetvol(int dev, int what, int left, int right){	error("no audio support");} voidaudiodevgetvol(int dev, int what, int *left, int *right){	error("no audio support");}