From f37e20b8a00fc9fd4578daaa02285686c45d6270 Mon Sep 17 00:00:00 2001
From: Benjamin Berg <bberg@redhat.com>
Date: Fri, 25 Jun 2021 09:51:44 +0200
Subject: [PATCH] meson: Permit disabling (and forcing) installation of udev
 rules

In some cases (e.g. inside the flatpak), it does not make sense to
generate and install udev rules.
---
 libfprint/meson.build |  2 +-
 meson.build           | 11 ++++++++---
 meson_options.txt     |  4 ++++
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/libfprint/meson.build b/libfprint/meson.build
index 29d8111..fa46f7d 100644
--- a/libfprint/meson.build
+++ b/libfprint/meson.build
@@ -332,7 +332,7 @@ udev_hwdb_generator = custom_target('udev-hwdb',
     install: false,
 )
 
-if udev_rules
+if install_udev_rules
     udev_rules = executable('fprint-list-udev-rules',
         'fprint-list-udev-rules.c',
         dependencies: libfprint_private_dep,
diff --git a/meson.build b/meson.build
index 90ea334..6ffb79c 100644
--- a/meson.build
+++ b/meson.build
@@ -166,7 +166,8 @@ imaging_dep = dependency('', required: false)
 gudev_dep = dependency('', required: false)
 libfprint_conf.set10('HAVE_PIXMAN', false)
 
-udev_rules = false
+udev_rules = get_option('udev_rules')
+install_udev_rules = udev_rules.enabled()
 
 foreach driver: drivers
     if driver == 'uru4000'
@@ -184,7 +185,7 @@ foreach driver: drivers
         libfprint_conf.set10('HAVE_PIXMAN', true)
     endif
         if udev_drivers.contains(driver)
-            udev_rules = true
+            install_udev_rules = true
 
             gudev_dep = dependency('gudev-1.0', required: false)
             if not gudev_dep.found()
@@ -198,7 +199,11 @@ foreach driver: drivers
     endif
 endforeach
 
-if udev_rules
+if udev_rules.disabled()
+    install_udev_rules = false
+endif
+
+if install_udev_rules
     udev_rules_dir = get_option('udev_rules_dir')
     if udev_rules_dir == 'auto'
         udev_dep = dependency('udev')
diff --git a/meson_options.txt b/meson_options.txt
index 8f43c88..f9b801f 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -6,6 +6,10 @@ option('introspection',
        description: 'Build GObject Introspection repository',
        type: 'boolean',
        value: true)
+option('udev_rules',
+       description: 'Whether to create and install udev rules (auto: turn on when needed by a driver)',
+       type: 'feature',
+       value: 'auto')
 option('udev_rules_dir',
        description: 'Installation path for udev rules',
        type: 'string',