Fix meson deprecations (#282)

README.md

@@ -12,7 +12,7 @@ You'll need the following dependencies:
 * libgranite-dev
 * libgtk-3-dev
 * libwingpanel-dev
-* meson
+* meson >= 0.58.0
 * valac
 
 Run `meson` to configure the build environment and then `ninja` to build

meson.build

@@ -1,15 +1,16 @@
 project(
     'notifications',
     'vala', 'c',
-    version: '7.1.1'
+    version: '7.1.1',
+    meson_version: '>= 0.58.0'
 )
 
 gettext_name = meson.project_name() + '-indicator'
 gnome = import('gnome')
 i18n = import('i18n')
 
 prefix = get_option('prefix')
-libdir = join_paths(prefix, get_option('libdir'))
+libdir = prefix / get_option('libdir')
 
 add_global_arguments(
     '-DGETTEXT_PACKAGE="@0@"'.format(gettext_name),
@@ -25,11 +26,11 @@ gresource = gnome.compile_resources(
 )
 
 wingpanel_dep = dependency('wingpanel')
-wingpanel_indicatorsdir = wingpanel_dep.get_pkgconfig_variable('indicatorsdir', define_variable: ['libdir', libdir])
+wingpanel_indicatorsdir = wingpanel_dep.get_variable('indicatorsdir', pkgconfig_define: ['libdir', libdir])
 
 config_data = configuration_data()
 config_data.set('GETTEXT_PACKAGE', meson.project_name() + '-indicator')
-config_data.set('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))
+config_data.set('LOCALEDIR', prefix / get_option('localedir'))
 config_vala = configure_file(
     input: 'src/Config.vala.in',
     output: '@BASENAME@',

po/extra/meson.build

@@ -1,4 +1,4 @@
 i18n.gettext('extra',
-    args: ['--directory='+meson.source_root(), '--from-code=UTF-8'],
+    args: ['--directory='+meson.project_source_root(), '--from-code=UTF-8'],
     install: false,
 )

po/meson.build

@@ -1,5 +1,5 @@
 i18n.gettext(gettext_name,
-    args: '--directory=' + meson.source_root(),
+    args: '--directory=' + meson.project_source_root(),
     preset: 'glib'
 )