[json-glib: 2/7] Change introspection option to feature type

[Emmanuele Bassi <ebassi src gnome org>]

commit 461edcc8cd6dc1c4efeb09aaaba02459293546f2
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Sat Oct 27 06:30:47 2018 -0400

    Change introspection option to feature type

 json-glib/meson.build | 4 ++--
 meson_options.txt     | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/json-glib/meson.build b/json-glib/meson.build
index bc8469a..035e954 100644
--- a/json-glib/meson.build
+++ b/json-glib/meson.build
@@ -93,8 +93,8 @@ pkgg.generate(
   requires: 'gio-2.0',
 )
 
-build_gir = get_option('introspection')
-if build_gir
+gir = find_program('g-ir-scanner', required : get_option('introspection'))
+if gir.found()
   gir_args = [
     '--quiet',
     '--c-include=json-glib/json-glib.h',
diff --git a/meson_options.txt b/meson_options.txt
index 75152aa..aba8129 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,5 +1,5 @@
 option('introspection',
-       type: 'boolean', value: true,
+       type: 'feature', value: 'auto', yield: true,
        description: 'Build the introspection data (requires gobject-introspection)')
 option('docs',
        type: 'boolean', value: false,