treewide: meson.build: use feature.allowed()

Since meson 0.59.0, a feature object has an `allowed()`
method which returns true when the feature is set to
'enabled' or 'auto'.

Utilize that instead of the previously used

  not feature.disabled()

src/daemon/systemd/meson.build

@@ -1,6 +1,6 @@
-if not get_option('systemd-system-service').disabled()
+if get_option('systemd-system-service').allowed()
   subdir('system')
 endif
-if not get_option('systemd-user-service').disabled()
+if get_option('systemd-user-service').allowed()
   subdir('user')
 endif

src/gst/meson.build

@@ -8,7 +8,7 @@ pipewire_gst_sources = [
   'gstpipewiresrc.c',
 ]
 
-if not get_option('gstreamer-device-provider').disabled()
+if get_option('gstreamer-device-provider').allowed()
   pipewire_gst_sources += [ 'gstpipewiredeviceprovider.c' ]
 endif
 

src/meson.build

@@ -3,10 +3,10 @@ subdir('pipewire')
 subdir('daemon')
 subdir('tools')
 subdir('modules')
-if not get_option('examples').disabled()
+if get_option('examples').allowed()
   subdir('examples')
 endif
-if not get_option('tests').disabled()
+if get_option('tests').allowed()
   subdir('tests')
 endif
 

src/tools/meson.build

@@ -34,7 +34,7 @@ if ncurses_dep.found()
 endif
 
 build_pw_cat = false
-if not get_option('pw-cat').disabled() and sndfile_dep.found()
+if get_option('pw-cat').allowed() and sndfile_dep.found()
   build_pw_cat = true
 
   pwcat_sources = [