From 55f57c1fb492e95066603b6185f5e0c987a8ef3c Mon Sep 17 00:00:00 2001
From: Mike Brady <mikebrady@eircom.net>
Date: Sat, 1 Aug 2015 14:32:03 +0200
Subject: [PATCH] Make dummy, pipe and stdout back ends truly optinal

---
 audio.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/audio.c b/audio.c
index e8f56718..6c2c6fce 100644
--- a/audio.c
+++ b/audio.c
@@ -41,7 +41,15 @@ extern audio_output audio_pulse;
 #ifdef CONFIG_ALSA
 extern audio_output audio_alsa;
 #endif
-extern audio_output audio_dummy, audio_pipe, audio_stdout;
+#ifdef CONFIG_DUMMY
+extern audio_output audio_dummy;
+#endif
+#ifdef CONFIG_PIPE
+extern audio_output audio_pipe;
+#endif
+#ifdef CONFIG_STDOUT
+extern audio_output audio_stdout;
+#endif
 
 static audio_output *outputs[] = {
 #ifdef CONFIG_SNDIO
@@ -56,7 +64,16 @@ static audio_output *outputs[] = {
 #ifdef CONFIG_AO
     &audio_ao,
 #endif
-    &audio_dummy, &audio_pipe, &audio_stdout, NULL};
+#ifdef CONFIG_DUMMY
+    &audio_dummy,
+#endif
+#ifdef CONFIG_PIPE 
+    &audio_pipe,
+#endif
+#ifdef CONFIG_STDOUT
+    &audio_stdout,
+#endif
+    NULL};
 
 audio_output *audio_get_output(char *name) {
   audio_output **out;