Only include the null wave* implementation in wave.c.

src/libespeak-ng/wave_pulse.c

 	return NULL;
 }
 
-#else
-
-void *wave_open(int srate, const char *device)
-{
-	(void)srate; // unused
-	(void)device; // unused
-
-	return (void *)1;
-}
-
-size_t wave_write(void *theHandler, char *theMono16BitsWaveBuffer, size_t theSize)
-{
-	(void)theHandler; // unused
-	(void)theMono16BitsWaveBuffer; // unused
-
-	return theSize;
-}
-
-int wave_close(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-int wave_is_busy(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-void wave_terminate()
-{
-}
-
-uint32_t wave_get_read_position(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-uint32_t wave_get_write_position(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-void wave_flush(void *theHandler)
-{
-	(void)theHandler; // unused
-}
-
-typedef int (t_wave_callback)(void);
-
-void wave_set_callback_is_output_enabled(t_wave_callback *cb)
-{
-	(void)cb; // unused
-}
-
-extern void *wave_test_get_write_buffer()
-{
-	return NULL;
-}
-
-int wave_get_remaining_time(uint32_t sample, uint32_t *time)
-{
-	(void)sample; // unused
-
-	if (!time) return -1;
-	*time = (uint32_t)0;
-	return 0;
-}
-
 #endif
 
 #ifndef USE_PORTAUDIO

src/libespeak-ng/wave_sada.c

 	return 0;
 }
 
-#else
-
-void *wave_open(int srate, const char *device)
-{
-	(void)srate; // unused
-	(void)device; // unused
-
-	return (void *)1;
-}
-
-size_t wave_write(void *theHandler, char *theMono16BitsWaveBuffer, size_t theSize)
-{
-	(void)theHandler; // unused
-	(void)theMono16BitsWaveBuffer; // unused
-
-	return theSize;
-}
-
-int wave_close(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-int wave_is_busy(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-void wave_terminate()
-{
-}
-
-uint32_t wave_get_read_position(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-uint32_t wave_get_write_position(void *theHandler)
-{
-	(void)theHandler; // unused
-
-	return 0;
-}
-
-void wave_flush(void *theHandler)
-{
-	(void)theHandler; // unused
-}
-
-typedef int (t_wave_callback)(void);
-
-void wave_set_callback_is_output_enabled(t_wave_callback *cb)
-{
-	(void)cb; // unused
-}
-
-extern void *wave_test_get_write_buffer()
-{
-	return NULL;
-}
-
-int wave_get_remaining_time(uint32_t sample, uint32_t *time)
-{
-	(void)sample; // unused
-
-	if (!time) return -1;
-	*time = (uint32_t)0;
-	return 0;
-}
-
 #endif
 
 void clock_gettime2(struct timespec *ts)