[gcab: 1/2] build-sys: Support disabling vapi generation independent of introspection

[Marc-André Lureau <malureau src gnome org>]

commit 5ac7272bba9635234fc08ab526b80a9f259d0fc6
Author: Mart Raudsepp <leio gentoo org>
Date:   Tue Feb 12 11:44:10 2019 +0200

    build-sys: Support disabling vapi generation independent of introspection

 libgcab/meson.build | 12 +++++++-----
 meson_options.txt   |  1 +
 2 files changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/libgcab/meson.build b/libgcab/meson.build
index f939617..3c4ac68 100644
--- a/libgcab/meson.build
+++ b/libgcab/meson.build
@@ -93,9 +93,11 @@ if get_option('introspection')
     ],
     install : true
   )
-  gnome.generate_vapi('libgcab-1.0',
-    sources: gir[0],
-    packages : ['gio-2.0'],
-    install : true,
-  )
+  if get_option('vapi')
+    gnome.generate_vapi('libgcab-1.0',
+      sources: gir[0],
+      packages : ['gio-2.0'],
+      install : true,
+    )
+  endif
 endif
diff --git a/meson_options.txt b/meson_options.txt
index bbcbbea..b7ade3f 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,3 +1,4 @@
 option('docs', type : 'boolean', value : true, description : 'enable developer documentation')
 option('introspection', type : 'boolean', value : true, description : 'generate GObject Introspection data')
+option('vapi', type : 'boolean', value : true, description: 'generate Vala bindings (requires 
introspection)')
 option('tests', type : 'boolean', value : true, description : 'enable tests')