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From 5a2d5dbdf8c6f6d3c896082a5a07b4292f5fb410 Mon Sep 17 00:00:00 2001
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From: Sam James <sam@gentoo.org>
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Date: Tue, 5 Jul 2022 01:47:35 +0100
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Subject: [PATCH 1/2] meson: set -D_GNU_SOURCE for updwtmpx
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Without setting GNU_SOURCE, we end up getting:
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```
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../gdm-42.0/daemon/gdm-session-record.c:200:9: error: implicit declaration of function ‘updwtmpx’; did you mean ‘updwtmp’? [-Werror=implicit-function-declaration]
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updwtmpx (GDM_NEW_SESSION_RECORDS_FILE, &session_record);
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```
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This ended up exposing a bug in updwtmp(3) (which is now fixed
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thanks to the man-pages maintainers!) as it didn't mention that updwtmpx
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is a GNU extension (and hence needs GNU_SOURCE in order to be available).
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Alternatively, we could just #define _GNU_SOURCE in gdm-session-record.c
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for updwtmpx.
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Bug: https://bugzilla.kernel.org/show_bug.cgi?id=216168
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---
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meson.build | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/meson.build b/meson.build
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index 8328dd97..4a286f97 100644
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--- a/meson.build
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+++ b/meson.build
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@@ -1,44 +1,47 @@
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project('gdm', 'c',
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version: '40.0',
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license: 'GPL2+',
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meson_version: '>= 0.50',
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)
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# Modules
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gnome = import('gnome')
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pkgconfig = import('pkgconfig')
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i18n = import('i18n')
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# Compiler
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cc = meson.get_compiler('c')
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+# Use GNU extensions if available
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+add_project_arguments('-D_GNU_SOURCE', language: 'c')
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+
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# Options
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gdm_prefix = get_option('prefix')
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gdmconfdir = (get_option('sysconfsubdir') == '')? gdm_prefix / get_option('sysconfdir') : gdm_prefix / get_option('sysconfdir') / get_option('sysconfsubdir')
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dmconfdir = (get_option('dmconfdir') != '')? get_option('dmconfdir') : gdm_prefix / get_option('sysconfdir') / 'dm'
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udev_dir = get_option('udev-dir')
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at_spi_registryd_dir = (get_option('at-spi-registryd-dir') != '')? get_option('at-spi-registryd-dir') : gdm_prefix / get_option('libexecdir')
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lang_config_file = (get_option('lang-file') != '')? get_option('lang-file') : gdm_prefix / get_option('sysconfdir') / 'locale.conf'
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pam_mod_dir = (get_option('pam-mod-dir') != '')? get_option('pam-mod-dir') : gdm_prefix / get_option('libdir') / 'security'
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dbus_sys_dir = (get_option('dbus-sys') != '')? get_option('dbus-sys') : get_option('sysconfdir') / 'dbus-1' / 'system.d'
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gdm_defaults_conf = (get_option('defaults-conf') != '')? get_option('defaults-conf') : gdm_prefix / get_option('datadir') / 'gdm' / 'defaults.conf'
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gdm_custom_conf = (get_option('custom-conf') != '')? get_option('custom-conf') : gdmconfdir / 'custom.conf'
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gnome_settings_daemon_dir = (get_option('gnome-settings-daemon-dir') != '')? get_option('gnome-settings-daemon-dir') : gdm_prefix / get_option('libexecdir')
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gdm_run_dir = (get_option('run-dir') != '')? get_option('run-dir') : gdm_prefix / get_option('localstatedir') / 'run' / 'gdm'
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gdm_runtime_conf = (get_option('runtime-conf') != '')? get_option('runtime-conf') : gdm_run_dir / 'custom.conf'
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gdm_pid_file = (get_option('pid-file') != '')? get_option('pid-file') : gdm_run_dir / 'gdm.pid'
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ran_once_marker_dir = (get_option('ran-once-marker-dir') != '')? get_option('ran-once-marker-dir') : gdm_run_dir
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working_dir = (get_option('working-dir') != '')? get_option('working-dir') : gdm_prefix / get_option('localstatedir') / 'lib' / 'gdm'
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gdm_xauth_dir = (get_option('xauth-dir') != '')? get_option('xauth-dir') : gdm_run_dir
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gdm_screenshot_dir = (get_option('screenshot-dir') != '')? get_option('screenshot-dir') : gdm_run_dir / 'greeter'
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# Common variables
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config_h_dir = include_directories('.')
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# Dependencies
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udev_dep = dependency('udev')
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glib_min_version = '2.56.0'
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glib_dep = dependency('glib-2.0', version: '>=' + glib_min_version)
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--
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2.31.1
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