Remove mentioning of -audio-backend command line option

The option has not done anything for quite some time, let's
get rid of it.

Change-Id: I8863ae81b74f1065d0eb0dd95b8ce192a6cd6a51
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Yoann Lopes <yoann.lopes@qt.io>

1 files changed, 5 insertions, 6 deletions

diff --git a/src/multimedia/audio/qaudiosystemplugin.cpp b/src/multimedia/audio/qaudiosystemplugin.cpp
index 018392939..61681b6d6 100644
--- a/src/multimedia/audio/qaudiosystemplugin.cpp
+++ b/src/multimedia/audio/qaudiosystemplugin.cpp
@@ -85,15 +85,14 @@ QAudioSystemPluginExtension::~QAudioSystemPluginExtension()
     QAbstractAudioOutput and QAbstractAudioInput.
 
 
-    -audio-backend configure option will force compiling in of the builtin backend
-    into the QtMultimedia library at compile time. This is automatic by default
-    and will only be compiled into the library if the dependencies are installed.
-    eg. alsa-devel package installed for linux.
+    The builtin backend will only be compiled into the library if the dependencies
+    are installed. eg. alsa-devel package installed for linux.
 
     If the builtin backend is not compiled into the QtMultimedia library and
     no audio plugins are available a fallback dummy backend will be used.
-    This should print out warnings if this is the case when you try and use QAudioInput or QAudioOutput. To fix this problem
-    reconfigure Qt using -audio-backend or create your own plugin with a default
+    This should print out warnings if this is the case when you try and use QAudioInput
+    or QAudioOutput. To fix this problem reconfigure Qt with the required
+    dependencies (e.g. alsa-devel package) available or create your own plugin with a default
     key to always override the dummy fallback. The easiest way to determine
     if you have only a dummy backend is to get a list of available audio devices.