build/android: remove all references to gnustl

Not needed anymore with NDK R25.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4747>

subprojects/gst-plugins-bad/ext/soundtouch/meson.build

@@ -9,10 +9,6 @@ if get_option('soundtouch').disabled()
   subdir_done()
 endif
 
-if not gnustl_dep.found() and get_option('soundtouch').enabled()
-  error('soundtouch plugin enabled but could not find gnustl dep for Android c++ support')
-endif
-
 soundtouch_dep = dependency('soundtouch', required : false)
 if soundtouch_dep.found()
   soundtouch_cargs += ['-DHAVE_SOUNDTOUCH_1_4']
@@ -36,7 +32,7 @@ if soundtouch_dep.found()
     c_args : gst_plugins_bad_args + soundtouch_cargs,
     cpp_args : gst_plugins_bad_args + soundtouch_cargs,
     include_directories : [configinc],
-    dependencies : [gstaudio_dep, soundtouch_dep, gnustl_dep],
+    dependencies : [gstaudio_dep, soundtouch_dep],
     install : true,
     install_dir : plugins_install_dir)
   plugins += [gstsoundtouch]

subprojects/gst-plugins-bad/ext/webrtcdsp/meson.build

@@ -7,17 +7,13 @@ webrtc_sources = [
 webrtc_dep = dependency('webrtc-audio-processing-1', version : ['>= 1.0'],
                         required : get_option('webrtcdsp'))
 
-if not gnustl_dep.found() and get_option('webrtcdsp').enabled()
-  error('webrtcdsp plugin enabled but could not find gnustl dep for Android c++ support')
-endif
-
-if webrtc_dep.found() and gnustl_dep.found()
+if webrtc_dep.found()
   gstwebrtcdsp = library('gstwebrtcdsp',
     webrtc_sources,
     cpp_args : gst_plugins_bad_args,
     link_args : noseh_link_args,
     include_directories : [configinc],
-    dependencies : [gstbase_dep, gstaudio_dep, gstbadaudio_dep, webrtc_dep, gnustl_dep],
+    dependencies : [gstbase_dep, gstaudio_dep, gstbadaudio_dep, webrtc_dep],
     install : true,
     install_dir : plugins_install_dir,
     override_options : ['cpp_std=c++17'],

subprojects/gst-plugins-bad/meson.build

@@ -471,11 +471,6 @@ else
 endif
 cdata.set('GST_ENABLE_EXTRA_CHECKS', not get_option('extra-checks').disabled())
 
-gnustl_dep = declare_dependency()
-if host_system == 'android'
-  gnustl_dep = dependency('gnustl', required : false)
-endif
-
 # Disable compiler warnings for unused variables and args if gst debug system is disabled
 if gst_dep.type_name() == 'internal'
   gst_debug_disabled = not subproject('gstreamer').get_variable('gst_debug')

subprojects/gst-plugins-good/ext/qt/meson.build

@@ -135,9 +135,6 @@ if host_system == 'android'
       optional_deps += [qt5androidextras, glesv2_dep]
       qt_defines += ['-DHAVE_QT_ANDROID']
       have_qt_windowing = true
-      # Needed for C++11 support in Cerbero. People building with Android
-      # in some other way need to add the necessary bits themselves.
-      optional_deps += dependency('gnustl', required : false)
     endif
   endif
 endif