diff --git a/meson.build b/meson.build
index bae3038..c4e81ea 100644
--- a/meson.build
+++ b/meson.build
@@ -1,3 +1,10 @@
 project('write-as-gtk', ['vala', 'c'], meson_version: '>=0.40.1')
 
+i18n = import('i18n')
+conf = configuration_data()
+conf.set_quoted('GETTEXT_PACKAGE', meson.project_name())
+configure_file(output: 'config.h', configuration: conf)
+config_h_dir = include_directories('.')
+
 subdir('data')
+subdir('src')
diff --git a/src/application.vala b/src/application.vala
new file mode 100644
index 0000000..fbff477
--- /dev/null
+++ b/src/application.vala
@@ -0,0 +1,17 @@
+public class WriteAs.Application : Gtk.Application {
+    construct {
+        Intl.setlocale(LocaleCategory.ALL, "");
+        Intl.textdomain("write.as");
+
+        application_id = "write-as-gtk.desktop";
+    }
+
+    public override void activate() {
+        if (get_windows().length() == 0)
+            new Gtk.ApplicationWindow(this).show_all();
+    }
+
+    public static int main(string[] args) {
+        return new WriteAs.Application().run(args);
+    }
+}
diff --git a/src/meson.build b/src/meson.build
new file mode 100644
index 0000000..98c28c3
--- /dev/null
+++ b/src/meson.build
@@ -0,0 +1,8 @@
+executable('write-as-gtk',
+    'application.vala',
+
+    c_args: ['-include', 'config.h'],
+    link_args: '-lm',
+    dependencies: [dependency('gtk+-3.0')],
+    install: true
+)