[gnome-shell] build: Make bash-completion support optional

[Florian Müllner <fmuellner src gnome org>]

commit 5c5dc03b785bcc4300097cd50c18b502c337c2c6
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Mar 5 14:56:13 2020 +0100

    build: Make bash-completion support optional
    
    Whether we install bash-completion support currently depends on whether
    the corresponding pkg-config dependency is found.
    
    Turning this into a feature option keeps that behavior by default, but
    also allows to explicitly enable or disable the support.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1072

 subprojects/extensions-tool/meson.build       | 2 +-
 subprojects/extensions-tool/meson_options.txt | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/subprojects/extensions-tool/meson.build b/subprojects/extensions-tool/meson.build
index ffaf49bd32..4631eef586 100644
--- a/subprojects/extensions-tool/meson.build
+++ b/subprojects/extensions-tool/meson.build
@@ -33,7 +33,7 @@ json_dep = dependency('json-glib-1.0')
 
 cc = meson.get_compiler('c')
 
-bash_completion = dependency('bash-completion', required: false)
+bash_completion = dependency('bash-completion', required: get_option('bash_completion'))
 
 subdir('src')
 
diff --git a/subprojects/extensions-tool/meson_options.txt b/subprojects/extensions-tool/meson_options.txt
index 9963d8ff7e..fb6e37060a 100644
--- a/subprojects/extensions-tool/meson_options.txt
+++ b/subprojects/extensions-tool/meson_options.txt
@@ -5,6 +5,12 @@ option('man',
   yield: true,
 )
 
+option('bash_completion',
+  type: 'feature',
+  value: 'auto',
+  description: 'Install bash completion support',
+)
+
 option('package_name',
   type: 'string',
   description: 'The gettext domain name when used as a subproject'