Remove -audio-backend command line option

This option hasn't done anything for quite some time, let's
get rid of it.

Change-Id: Ic6f2830aaf69ba2d054ce21f0d144a61ddf5d06b
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

configure

@@ -665,7 +665,6 @@ CFG_BUILD_PARTS=""
 CFG_NOBUILD_PARTS=""
 CFG_SKIP_MODULES=""
 CFG_COMPILE_EXAMPLES=yes
-CFG_AUDIO_BACKEND=auto
 CFG_QML_DEBUG=yes
 CFG_PKGCONFIG=auto
 CFG_STACK_PROTECTOR_STRONG=auto
@@ -2055,13 +2054,6 @@ while [ "$#" -gt 0 ]; do
     silent)
         CFG_SILENT="$VAL"
         ;;
-    audio-backend)
-        if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
-            CFG_AUDIO_BACKEND="$VAL"
-        else
-            UNKNOWN_OPT=yes
-        fi
-        ;;
     icu)
         if [ "$VAL" = "yes" ] || [ "$VAL" = "no" ]; then
             CFG_ICU="$VAL"
@@ -5423,10 +5415,6 @@ if [ "$CFG_ALSA" = "auto" ]; then
     fi
 fi
 
-if [ "$CFG_AUDIO_BACKEND" = "auto" ]; then
-    CFG_AUDIO_BACKEND=yes
-fi
-
 # detect GStreamer support
 if [ "$CFG_GSTREAMER" = "auto" ] || [ "$CFG_GSTREAMER" = "yes" ]; then
     if compileTest unix/gstreamer "GStreamer 1.0" -config gst-1.0; then
@@ -5811,11 +5799,6 @@ fi
 CFG_CONCURRENT="yes"
 QT_CONFIG="$QT_CONFIG concurrent"
 
-# ### Vestige
-if [ "$CFG_AUDIO_BACKEND" = "yes" ]; then
-    QT_CONFIG="$QT_CONFIG audio-backend"
-fi
-
 # ### Vestige
 if [ "$CFG_WEBKIT" = "debug" ]; then
     QMAKE_CONFIG="$QMAKE_CONFIG webkit-debug"

mkspecs/devices/linux-arm-hisilicon-hix5hd2-g++/qmake.conf

@@ -4,14 +4,14 @@
 # A typical configure line looks like this:
 # <path-to-qt-src>/configure -opensource -confirm-license  -release -make libs -make examples -optimized-qmake
 # -platform linux-g++-64 -device linux-arm-hisilicon-hix5hd2-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf-
-# -opengl es2 -no-qml-debug -no-directfb -no-kms -no-xcb -no-alsa -no-audio-backend -qt-zlib -qt-libjpeg -qt-libpng
+# -opengl es2 -no-qml-debug -no-directfb -no-kms -no-xcb -no-alsa -qt-zlib -qt-libjpeg -qt-libpng
 # -no-icu -no-nis -sysroot <path-to-rootfs> -extprefix <path-to-targetinstall> -hostprefix <path-to-hostinstall>
 # -prefix <path-to-prefix>
 #
 # such as
 # ./configure -opensource -confirm-license  -release -make libs -make examples -optimized-qmake
 # -platform linux-g++-64 -device linux-arm-hisilicon-hix5hd2-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf-
-# -opengl es2 -no-qml-debug -no-directfb -no-kms -no-xcb -no-alsa -no-audio-backend -qt-zlib -qt-libjpeg -qt-libpng
+# -opengl es2 -no-qml-debug -no-directfb -no-kms -no-xcb -no-alsa -qt-zlib -qt-libjpeg -qt-libpng
 # -no-icu -no-nis -sysroot /home/abc/project/sysbase
 # -extprefix /home/abc/project/sysbase/qt_install
 # -hostprefix /home/abc/project/qtdir/qtbase_hostinstall

tools/configure/configureapp.cpp

@@ -155,7 +155,6 @@ Configure::Configure(int& argc, char** argv) : verbose(0)
     dictionary[ "AVX2" ]            = "auto";
     dictionary[ "AVX512" ]          = "auto";
     dictionary[ "SYNCQT" ]          = "auto";
-    dictionary[ "AUDIO_BACKEND" ]   = "auto";
     dictionary[ "WMF_BACKEND" ]     = "no";
     dictionary[ "WMSDK" ]           = "auto";
     dictionary[ "QML_DEBUG" ]       = "yes";
@@ -830,10 +829,6 @@ void Configure::parseCmdLine()
             dictionary[ "DBUS" ] = "linked";
         } else if (configCmdLine.at(i) == "-dbus-runtime") {
             dictionary[ "DBUS" ] = "runtime";
-        } else if (configCmdLine.at(i) == "-audio-backend") {
-            dictionary[ "AUDIO_BACKEND" ] = "yes";
-        } else if (configCmdLine.at(i) == "-no-audio-backend") {
-            dictionary[ "AUDIO_BACKEND" ] = "no";
         } else if (configCmdLine.at(i) == "-wmf-backend") {
             dictionary[ "WMF_BACKEND" ] = "yes";
         } else if (configCmdLine.at(i) == "-no-wmf-backend") {
@@ -1876,8 +1871,6 @@ bool Configure::displayHelp()
         desc("DBUS", "no",       "-no-dbus",            "Do not compile in D-Bus support.");
         desc("DBUS", "linked",   "-dbus-linked",        "Compile in D-Bus support and link to libdbus-1.\n");
         desc("DBUS", "runtime",  "-dbus-runtime",       "Compile in D-Bus support and load libdbus-1\ndynamically.");
-        desc("AUDIO_BACKEND", "no","-no-audio-backend", "Do not compile in the platform audio backend into\nQt Multimedia.");
-        desc("AUDIO_BACKEND", "yes","-audio-backend",   "Compile in the platform audio backend into Qt Multimedia.\n");
         desc("WMF_BACKEND", "no","-no-wmf-backend",     "Do not compile in the windows media foundation backend\ninto Qt Multimedia.");
         desc("WMF_BACKEND", "yes","-wmf-backend",       "Compile in the windows media foundation backend into Qt Multimedia.\n");
         desc("QML_DEBUG", "no",    "-no-qml-debug",     "Do not build the in-process QML debugging support.");
@@ -2145,8 +2138,6 @@ bool Configure::checkAvailability(const QString &part)
                     && !QStandardPaths::findExecutable(QStringLiteral("xgConsole.exe")).isEmpty();
     } else if (part == "WMSDK") {
         available = findFile("wmsdk.h");
-    } else if (part == "AUDIO_BACKEND") {
-        available = true;
     } else if (part == "WMF_BACKEND") {
         available = findFile("mfapi.h") && findFile("mf.lib");
     } else if (part == "DIRECTWRITE") {
@@ -2317,8 +2308,6 @@ void Configure::autoDetection()
         dictionary["DBUS"] = checkAvailability("DBUS") ? "linked" : "runtime";
     if (dictionary["QML_DEBUG"] == "auto")
         dictionary["QML_DEBUG"] = dictionary["QML"] == "yes" ? "yes" : "no";
-    if (dictionary["AUDIO_BACKEND"] == "auto")
-        dictionary["AUDIO_BACKEND"] = checkAvailability("AUDIO_BACKEND") ? "yes" : "no";
     if (dictionary["WMF_BACKEND"] == "auto")
         dictionary["WMF_BACKEND"] = checkAvailability("WMF_BACKEND") ? "yes" : "no";
     if (dictionary["WMSDK"] == "auto")
@@ -2772,10 +2761,6 @@ void Configure::generateOutputVars()
     else if (dictionary[ "DBUS" ] == "linked")
         qtConfig += "dbus dbus-linked";
 
-    // ### Vestige
-    if (dictionary["AUDIO_BACKEND"] == "yes")
-        qtConfig += "audio-backend";
-
     if (dictionary["QML_DEBUG"] == "no")
         qtConfig += "no-qml-debug";