Install appdata.

resources/desktop/appdata.xml

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-​<!-- Copyright 2017 Martin Rotter <rotter.martinos@gmail.com> -->
-​<component type="desktop-application">
-​  <id>com.github.rssguard</id>
-​  <metadata_license>GPL-3.0</metadata_license>
-​  <project_license>GPL-3.0</project_license>
-​  <name>RSS Guard </name>
-​  <summary>Simple (yet powerful) feed reader</summary>
-​  <description>
-​    <p>
-​      RSS Guard is simple (yet powerful) feed reader. It is able to fetch the most known feed formats, including RSS/RDF and ATOM. RSS Guard is developed on top of the Qt library
-​    </p>
-​  </description>
-​  <launchable type="desktop-id">rssguard.desktop</launchable>
-​  <screenshots>
-​    <screenshot type="default">
-​      <caption>Linux version</caption>
-​      <image>https://github.com/martinrotter/rssguard/blob/gmail-plugin/resources/screenshots/screenshot-linux.png?raw=true</image>
-​    </screenshot>
-    <screenshot>
-​      <caption>Windows version</caption>
-​      <image>https://github.com/martinrotter/rssguard/blob/gmail-plugin/resources/screenshots/screenshot-windows.png?raw=true</image>
-​    </screenshot>
-​  </screenshots>
-​  <url type="homepage">https://github.com/martinrotter/rssguard</url>
-​  <provides>
-​    <binary>rssguard</binary>
-​  </provides>
-​</component>

rssguard.pro

@@ -685,10 +685,16 @@ unix:!mac:!android {
   desktop_file.files = resources/desktop/$${TARGET}.desktop
   desktop_file.path = $$quote($$PREFIX/share/applications/)
 
+  desktop_file.files = resources/desktop/$${TARGET}.desktop
+  desktop_file.path = $$quote($$PREFIX/share/applications/)
+
+  appdata.files = resources/desktop/$${TARGET}.appdata.xml
+  appdata.path = $$quote($$PREFIX/share/metainfo/)
+
   desktop_icon.files = resources/graphics/$${TARGET}.png
   desktop_icon.path = $$quote($$PREFIX/share/pixmaps/)
 
-  INSTALLS += target desktop_file desktop_icon
+  INSTALLS += target desktop_file desktop_icon appdata
 }
 
 android {