[retro-gtk] meson: Add the vapi option

[Alexander Mikhaylenko <alexm src gnome org>]

commit e49ccf66cb5ef75e7113c9e83181c694e6591ec7
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Oct 16 12:57:08 2020 +0200

    meson: Add the vapi option
    
    This allows disabling building Vala bindings.

 meson.build           |  1 +
 meson_options.txt     |  2 ++
 retro-gtk/meson.build | 30 ++++++++++++++++--------------
 3 files changed, 19 insertions(+), 14 deletions(-)
---
diff --git a/meson.build b/meson.build
index c5a6c7ca..0de648eb 100644
--- a/meson.build
+++ b/meson.build
@@ -67,6 +67,7 @@ summary = [
   '     Build documentation: @0@'.format(get_option('build-doc')),
   '   Install documentation: @0@'.format(get_option('install-doc')),
   '           Introspection: @0@'.format(get_option('introspection')),
+  '           Vala bindings: @0@'.format(get_option('vapi')),
   'Dependencies:',
   '              PulseAudio: @0@'.format(get_option('pulseaudio').enabled()),
   'Directories:',
diff --git a/meson_options.txt b/meson_options.txt
index 0c99f179..8f3f06cc 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -13,6 +13,8 @@ option('install-doc', type: 'boolean', value: 'false',
   description : 'Install API reference documentation')
 option('introspection', type: 'boolean', value: 'true',
   description : 'Build introspection data (requires gobject-introspection)')
+option('vapi', type: 'boolean', value: 'true',
+  description : 'Build Vala bindings (requires vapigen and introspection option)')
 
 # Dependencies
 option('pulseaudio', type: 'feature', value: 'enabled',
diff --git a/retro-gtk/meson.build b/retro-gtk/meson.build
index bc4b9bab..aa3f311c 100644
--- a/retro-gtk/meson.build
+++ b/retro-gtk/meson.build
@@ -152,20 +152,22 @@ if get_option('introspection')
     symbol_prefix: 'retro',
   )
 
-  retro_gtk_vapi_packages = [
-    'gio-2.0',
-    'glib-2.0',
-    'gmodule-2.0',
-    'gobject-2.0',
-    'gtk+-3.0',
-  ]
-
-  gnome.generate_vapi(
-    retro_gtk_module,
-    install: true,
-    packages: retro_gtk_vapi_packages,
-    sources: retro_gtk_gir[0],
-  )
+  if get_option('vapi')
+    retro_gtk_vapi_packages = [
+      'gio-2.0',
+      'glib-2.0',
+      'gmodule-2.0',
+      'gobject-2.0',
+      'gtk+-3.0',
+    ]
+
+    gnome.generate_vapi(
+      retro_gtk_module,
+      install: true,
+      packages: retro_gtk_vapi_packages,
+      sources: retro_gtk_gir[0],
+    )
+  endif
 
   retro_gtk_dep_sources += retro_gtk_gir
 endif