[gnome-games] build: Add Games.OPTIONS_DIR

[Adrien Plazas <aplazas src gnome org>]

commit f460be9d03ede17e33d7d70e538cb97ba0d65db2
Author: Exalm <exalm7659 gmail com>
Date:   Wed May 2 19:03:52 2018 +0500

    build: Add Games.OPTIONS_DIR
    
    Allows to get the location of installed option files.

 src/Makefile.am | 2 ++
 src/config.vala | 1 +
 2 files changed, 3 insertions(+)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 85fb00b..6e4ac09 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -96,6 +96,7 @@ gnome_games_SOURCES = \
        retro/retro-error.vala \
        retro/retro-gamepad.vala \
        retro/retro-input-manager.vala \
+       retro/retro-options.vala \
        retro/retro-platform.vala \
        retro/retro-runner.vala \
        retro/retro-simple-game-uri-adapter.vala \
@@ -199,6 +200,7 @@ gnome_games_CFLAGS = \
        $(GNOME_GAMES_CFLAGS) \
        -I$(srcdir)/gamepad \
        -DGNOMELOCALEDIR=\""$(datadir)/locale"\" \
+       -DGAMES_OPTIONS_DIR=\"$(datadir)/gnome-games/options\" \
        -DGAMES_PLUGINS_DIR=\"$(libdir)/gnome-games/plugins\" \
        $(NULL)
 
diff --git a/src/config.vala b/src/config.vala
index 3f84b74..c6de027 100644
--- a/src/config.vala
+++ b/src/config.vala
@@ -1,5 +1,6 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 namespace Games {
+       private extern const string OPTIONS_DIR;
        private extern const string PLUGINS_DIR;
 }