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mutter/meson.build
Olivier Fourdan e5347af000 xwayland: Check X11 clients prior to terminate Xwayland 
Currently, mutter checks for the presence of X11 windows to decide
whether or not Xwayland can be terminated, when Xwayland is started on
demand.

Unfortunately, not all X11 clients will map a window all the time, an
X11 client may keep the X11 connection opened after closing all its
windows. In that case, we may terminate Xwayland while there are some
X11 client connected still, and terminating Xwayland will also kill
those X11 clients.

To avoid that issue, check the X11 clients actually connected using the
XRes extension. The XRes extension provides the PID of the (local) X11
clients connected to the Xserver, so we need to match that against the
actual executable names, and compare with a list of known executables
that we can safely ignore, such as ibus-x11 or gsd-xsettings.

We also check against our own executable name, considering that the X11
window manager is also an X11 client connected to the Xserver.

Also, XRes returning the PID of local clients only is not a problem
considering that Xwayland does not listen to remote connections.
However, if the user spawns a client remotely on another system using
ssh tunneling (ssh -X), only clients which actually map a window will
be accounted for.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1537
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1671>
2021-01-18 17:52:22 +01:00

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project('mutter', 'c',
version: '40.beta',
meson_version: '>= 0.51.0',
license: 'GPLv2+'
)
split_version = meson.project_version().split('.')
# Automatically increase API version each development cycle,
# starting with 0 in 3.23.x
api_version = split_version[0].to_int() - 32
libmutter_api_version = '@0@'.format(api_version)
# generic version requirements
fribidi_req = '>= 1.0.0'
glib_req = '>= 2.61.1'
gi_req = '>= 0.9.5'
graphene_req = '>= 1.10.2'
gtk3_req = '>= 3.19.8'
gdk_pixbuf_req = '>= 2.0'
uprof_req = '>= 0.3'
pango_req = '>= 1.46.0'
cairo_req = '>= 1.10.0'
pangocairo_req = '>= 1.20'
gsettings_desktop_schemas_req = '>= 40.alpha'
json_glib_req = '>= 0.12.0'
upower_glib_req = '>= 0.99.0'
xcomposite_req = '>= 0.4'
xkbcommon_req = '>= 0.4.3'
xfixes_req = '>= 3'
xi_req = '>= 1.7.4'
xrandr_req = '>= 1.5.0'
libstartup_notification_req = '>= 0.7'
libcanberra_req = '>= 0.26'
libwacom_req = '>= 0.13'
atk_req = '>= 2.5.3'
# optional version requirements
udev_req = '>= 228'
gudev_req = '>= 232'
# wayland version requirements
wayland_server_req = '>= 1.18'
wayland_protocols_req = '>= 1.19'
# native backend version requirements
libinput_req = '>= 1.15.0'
gbm_req = '>= 17.3'
# screen cast version requirements
libpipewire_req = '>= 0.3.0'
# profiler requirements
sysprof_req = '>= 3.37.2'
gnome = import('gnome')
pkg = import('pkgconfig')
i18n = import('i18n')
cc = meson.get_compiler('c')
prefix = get_option('prefix')
bindir = join_paths(prefix, get_option('bindir'))
datadir = join_paths(prefix, get_option('datadir'))
libdir = join_paths(prefix, get_option('libdir'))
libexecdir = join_paths(prefix, get_option('libexecdir'))
includedir = join_paths(prefix, get_option('includedir'))
sysconfdir = get_option('sysconfdir')
pkgname = '@0@-@1@'.format(meson.project_name(), libmutter_api_version)
pkgdatadir = join_paths(datadir, pkgname)
pkglibdir = join_paths(libdir, pkgname)
pkgincludedir = join_paths(includedir, pkgname)
pcdir = join_paths(libdir, 'pkgconfig')
gettext_package = meson.project_name()
localedir = join_paths(datadir, 'locale')
libmutter_name = 'mutter-' + libmutter_api_version
mutter_installed_tests_datadir = join_paths(
datadir, 'installed-tests', libmutter_name)
mutter_installed_tests_libexecdir = join_paths(
libexecdir, 'installed-tests', libmutter_name)
m_dep = cc.find_library('m', required: true)
x11_dep = dependency('x11')
graphene_dep = dependency('graphene-gobject-1.0', version: graphene_req)
gtk3_dep = dependency('gtk+-3.0', version: gtk3_req)
gdk_pixbuf_dep = dependency('gdk-pixbuf-2.0')
pango_dep = dependency('pango', version: pango_req)
cairo_dep = dependency('cairo', version: cairo_req)
cairo_gobject_dep = dependency('cairo-gobject', version: cairo_req)
pangocairo_dep = dependency('pangocairo', version: pangocairo_req)
fribidi_dep = dependency('fribidi', version: fribidi_req)
gsettings_desktop_schemas_dep = dependency('gsettings-desktop-schemas',
version: gsettings_desktop_schemas_req)
glib_dep = dependency('glib-2.0', version: glib_req)
gio_dep = dependency('gio-unix-2.0', version: glib_req)
gio_unix_dep = dependency('gio-unix-2.0', version: glib_req)
gobject_dep = dependency('gobject-2.0', version: glib_req)
gthread_dep = dependency('gobject-2.0', version: glib_req)
gmodule_no_export_dep = dependency('gmodule-no-export-2.0', version: glib_req)
gnome_settings_daemon_dep = dependency('gnome-settings-daemon')
json_glib_dep = dependency('json-glib-1.0', version: json_glib_req)
gnome_desktop_dep = dependency('gnome-desktop-3.0')
xcomposite_dep = dependency('xcomposite', version: xcomposite_req)
xcursor_dep = dependency('xcursor')
xdamage_dep = dependency('xdamage')
xext_dep = dependency('xext')
xfixes_dep = dependency('xfixes', version: xfixes_req)
xi_dep = dependency('xi', version: xi_req)
xtst_dep = dependency('xtst')
xkbfile_dep = dependency('xkbfile')
xkeyboard_config_dep = dependency('xkeyboard-config')
xkbcommon_dep = dependency('xkbcommon', version: xkbcommon_req)
xkbcommon_x11_dep = dependency('xkbcommon-x11')
xrender_dep = dependency('xrender')
x11_xcb_dep = dependency('x11-xcb')
xrandr_dep = dependency('xrandr', version: xrandr_req)
xcb_randr_dep = dependency('xcb-randr')
xcb_res_dep = dependency('xcb-res')
xinerama_dep = dependency('xinerama')
xau_dep = dependency('xau')
ice_dep = dependency('ice')
atk_dep = dependency('atk', version: atk_req)
libcanberra_dep = dependency('libcanberra', version: libcanberra_req)
dbus_dep = dependency('dbus-1')
# For now always require X11 support
have_x11 = true
have_gl = get_option('opengl')
if have_gl
gl_dep = dependency('gl')
gl_libname = get_option('opengl_libname')
endif
have_egl = get_option('egl')
if have_egl
egl_dep = dependency('egl')
endif
have_glx = get_option('glx')
if have_glx
if not have_gl
error('GLX support requires OpenGL to be enabled')
endif
endif
have_egl_xlib = have_egl and have_x11
have_gles2 = get_option('gles2')
if have_gles2
gles2_dep = dependency('glesv2')
gles2_libname = get_option('gles2_libname')
if not have_egl
error('GLESv2 support requires EGL to be enabled')
endif
endif
have_wayland = get_option('wayland')
if have_wayland
wayland_server_dep = dependency('wayland-server', version: wayland_server_req)
wayland_client_dep = dependency('wayland-client', version: wayland_server_req)
wayland_protocols_dep = dependency('wayland-protocols',
version: wayland_protocols_req)
wayland_egl_dep = dependency('wayland-egl')
if not have_egl
error('Wayland support requires EGL to be enabled')
endif
endif
have_libgudev = get_option('udev')
if have_libgudev
libudev_dep = dependency('libudev', version: udev_req)
gudev_dep = dependency('gudev-1.0', version: gudev_req)
udev_dep = dependency('udev')
udevdir = udev_dep.get_pkgconfig_variable('udevdir')
endif
have_native_backend = get_option('native_backend')
if have_native_backend
libdrm_dep = dependency('libdrm')
libgbm_dep = dependency('gbm', version: gbm_req)
libinput_dep = dependency('libinput', version: libinput_req)
libsystemd_dep = dependency('libsystemd', required: false)
if libsystemd_dep.found()
logind_provider_dep = libsystemd_dep
else
logind_provider_dep = dependency('libelogind')
endif
if not have_egl
error('The native backend requires EGL to be enabled')
endif
if not have_gles2
error('The native backend requires GLESv2 to be enabled')
endif
if not have_libgudev
error('The native backend requires udev to be enabled')
endif
endif
have_egl_device = get_option('egl_device')
have_wayland_eglstream = get_option('wayland_eglstream')
if have_wayland_eglstream
wayland_eglstream_protocols_dep = dependency('wayland-eglstream-protocols')
dl_dep = cc.find_library('dl', required: true)
if not have_wayland
error('Wayland EGLStream support requires Wayland to be enabled')
endif
endif
have_sm = get_option('sm')
if have_sm
sm_dep = dependency('sm')
endif
have_libwacom = get_option('libwacom')
if have_libwacom
libwacom_dep = dependency('libwacom', version: libwacom_req)
endif
have_pango_ft2 = get_option('pango_ft2')
if have_pango_ft2
pangoft2_dep = dependency('pangoft2')
endif
have_startup_notification = get_option('startup_notification')
if have_startup_notification
libstartup_notification_dep = dependency('libstartup-notification-1.0',
version: libstartup_notification_req)
endif
have_remote_desktop = get_option('remote_desktop')
if have_remote_desktop
libpipewire_dep = dependency('libpipewire-0.3', version: libpipewire_req)
endif
have_introspection = get_option('introspection')
if have_introspection
gobject_introspection_dep = dependency('gobject-introspection-1.0')
introspection_args = [
'--quiet',
'-U_GNU_SOURCE',
]
endif
have_tests = get_option('tests')
have_core_tests = false
have_cogl_tests = false
have_clutter_tests = false
have_installed_tests = false
if have_tests
have_core_tests = get_option('core_tests')
if have_core_tests
if not have_wayland
error('Tests require Wayland to be enabled')
endif
endif
have_cogl_tests = get_option('cogl_tests')
have_clutter_tests = get_option('clutter_tests')
have_installed_tests = get_option('installed_tests')
endif
have_profiler = get_option('profiler')
if have_profiler
# libsysprof-capture support
sysprof_dep = dependency('sysprof-capture-4',
required: true,
default_options: [
'enable_examples=false',
'enable_gtk=false',
'enable_tests=false',
'enable_tools=false',
'libsysprof=false',
'with_sysprofd=none',
'help=false',
],
fallback: ['sysprof', 'libsysprof_capture_dep'],
)
endif
required_functions = [
'ffs',
'clz',
'memmem',
]
foreach function : required_functions
if not cc.has_function(function)
error('Required function ' + function + ' missing')
endif
endforeach
if host_machine.cpu_family() == 'x86'
add_project_arguments('-ffloat-store', language: 'c')
endif
add_project_arguments('-D_GNU_SOURCE', language: 'c')
buildtype = get_option('buildtype')
if buildtype != 'plain'
all_warnings = [
'-fno-strict-aliasing',
'-Wpointer-arith',
'-Wmissing-declarations',
'-Wimplicit-function-declaration',
'-Wformat=2',
'-Wformat-nonliteral',
'-Wformat-security',
'-Wstrict-prototypes',
'-Wmissing-prototypes',
'-Wnested-externs',
'-Wold-style-definition',
'-Wundef',
'-Wunused',
'-Wcast-align',
'-Wmissing-noreturn',
'-Wmissing-format-attribute',
'-Wmissing-include-dirs',
'-Wlogical-op',
'-Wignored-qualifiers',
'-Werror=redundant-decls',
'-Werror=implicit',
'-Werror=nonnull',
'-Werror=init-self',
'-Werror=main',
'-Werror=missing-braces',
'-Werror=sequence-point',
'-Werror=return-type',
'-Werror=trigraphs',
'-Werror=array-bounds',
'-Werror=write-strings',
'-Werror=address',
'-Werror=int-to-pointer-cast',
'-Werror=pointer-to-int-cast',
'-Werror=empty-body',
'-Werror=write-strings',
]
supported_warnings = cc.get_supported_arguments(all_warnings)
add_project_arguments(supported_warnings, language: 'c')
endif
if get_option('debug')
debug_c_args = [
'-DG_ENABLE_DEBUG',
'-fno-omit-frame-pointer'
]
supported_debug_c_args = cc.get_supported_arguments(debug_c_args)
add_project_arguments(supported_debug_c_args, language: 'c')
endif
cc.compiles('void main (void) { __builtin_ffsl (0); __builtin_popcountl (0); }')
cdata = configuration_data()
cdata.set_quoted('GETTEXT_PACKAGE', gettext_package)
cdata.set_quoted('VERSION', meson.project_version())
cdata.set_quoted('PACKAGE_VERSION', meson.project_version())
cdata.set('HAVE_EGL', have_egl)
cdata.set('HAVE_WAYLAND', have_wayland)
cdata.set('HAVE_NATIVE_BACKEND', have_native_backend)
cdata.set('HAVE_REMOTE_DESKTOP', have_remote_desktop)
cdata.set('HAVE_EGL_DEVICE', have_egl_device)
cdata.set('HAVE_WAYLAND_EGLSTREAM', have_wayland_eglstream)
cdata.set('HAVE_LIBGUDEV', have_libgudev)
cdata.set('HAVE_LIBWACOM', have_libwacom)
cdata.set('HAVE_SM', have_sm)
cdata.set('HAVE_STARTUP_NOTIFICATION', have_startup_notification)
cdata.set('HAVE_INTROSPECTION', have_introspection)
cdata.set('HAVE_PROFILER', have_profiler)
xkb_base = xkeyboard_config_dep.get_pkgconfig_variable('xkb_base')
cdata.set_quoted('XKB_BASE', xkb_base)
if cc.has_header_symbol('sys/prctl.h', 'prctl')
cdata.set('HAVE_SYS_PRCTL', 1)
endif
have_xwayland_initfd = false
if have_wayland
xwayland_dep = dependency('xwayland', required: false)
xwayland_path = get_option('xwayland_path')
if xwayland_path == ''
if xwayland_dep.found()
xwayland_path = xwayland_dep.get_pkgconfig_variable('xwayland')
else
xwayland_path = find_program('Xwayland').path()
endif
endif
cdata.set_quoted('XWAYLAND_PATH', xwayland_path)
# For Xwayland authority file generation.
if cc.has_header_symbol('sys/random.h', 'getrandom')
cdata.set('HAVE_SYS_RANDOM', 1)
elif cc.has_header_symbol('linux/random.h', 'getrandom')
cdata.set('HAVE_LINUX_RANDOM', 1)
else
error('Required function getrandom not found')
endif
# For Xwayland -initfd usage
use_initfd = get_option('xwayland_initfd')
if xwayland_dep.found()
xwayland_supports_initfd = xwayland_dep.get_pkgconfig_variable('have_initfd') == 'true'
else
xwayland_options = run_command(xwayland_path, '-help')
xwayland_supports_initfd = xwayland_options.stderr().contains('-initfd')
endif
if use_initfd.auto()
have_xwayland_initfd = xwayland_supports_initfd
else
have_xwayland_initfd = use_initfd.enabled()
if have_xwayland_initfd and not xwayland_supports_initfd
error('XWayland -initfd support requested but not available')
endif
endif
if (have_xwayland_initfd)
cdata.set('HAVE_XWAYLAND_INITFD', 1)
endif
endif
have_xsetioerrorexithandler = false
if cc.has_function('XSetIOErrorExitHandler', dependencies: x11_dep,
prefix: '''#include <X11/Xlib.h>''')
have_xsetioerrorexithandler = true
cdata.set('HAVE_XSETIOERROREXITHANDLER', 1)
endif
optional_functions = [
'mkostemp',
'posix_fallocate',
'memfd_create',
]
foreach function : optional_functions
if cc.has_function(function)
cdata.set('HAVE_' + function.to_upper(), 1)
else
message('Optional function ' + function + ' missing')
endif
endforeach
xwayland_grab_default_access_rules = get_option('xwayland_grab_default_access_rules')
cdata.set_quoted('XWAYLAND_GRAB_DEFAULT_ACCESS_RULES',
xwayland_grab_default_access_rules)
xwayland_ignore_executables = get_option('xwayland_ignore_executables')
cdata.set_quoted('XWAYLAND_IGNORE_EXECUTABLES',
xwayland_ignore_executables)
cdata.set_quoted('MUTTER_PLUGIN_DIR', join_paths(pkglibdir, 'plugins'))
cdata.set_quoted('MUTTER_LOCALEDIR', localedir)
cdata.set_quoted('MUTTER_LIBEXECDIR', libexecdir)
cdata.set_quoted('MUTTER_PKGDATADIR', pkgdatadir)
config_h = configure_file(
input: 'config.h.meson',
output: 'config.h',
configuration: cdata
)
top_includepath = include_directories('.')
subdir('cogl')
subdir('clutter')
subdir('data')
subdir('src')
subdir('po')
subdir('doc/man')
meson.add_install_script('meson/meson-postinstall.sh')
output = [
'',
'',
' Mutter ' + meson.project_version(),
' ===============',
'',
' Prefix....................... ' + prefix,
' libexecdir................... ' + libexecdir,
' pkgdatadir................... ' + pkgdatadir,
'',
' Rendering APIs:',
'',
' OpenGL................... ' + have_gl.to_string(),
' GLES2.................... ' + have_gles2.to_string(),
' EGL...................... ' + have_egl.to_string(),
' GLX...................... ' + have_glx.to_string(),
'',
' Options:',
'',
' Wayland.................. ' + have_wayland.to_string(),
' Wayland EGLStream........ ' + have_wayland_eglstream.to_string(),
' Native Backend........... ' + have_native_backend.to_string(),
' EGL Device............... ' + have_egl_device.to_string(),
' Remote desktop........... ' + have_remote_desktop.to_string(),
' gudev.................... ' + have_libgudev.to_string(),
' Wacom.................... ' + have_libwacom.to_string(),
' SM....................... ' + have_sm.to_string(),
' Startup notification..... ' + have_startup_notification.to_string(),
' Introspection............ ' + have_introspection.to_string(),
' Profiler................. ' + have_profiler.to_string(),
' Xwayland initfd.......... ' + have_xwayland_initfd.to_string(),
' Safe X11 I/O errors...... ' + have_xsetioerrorexithandler.to_string(),
'',
' Tests:',
'',
' Enabled.................. ' + have_tests.to_string(),
' Core tests............... ' + have_core_tests.to_string(),
' Cogl tests............... ' + have_cogl_tests.to_string(),
' Clutter tests............ ' + have_clutter_tests.to_string(),
' Installed tests.......... ' + have_installed_tests.to_string(),
' Coverage................. ' + get_option('b_coverage').to_string(),
'',
' Now type \'ninja -C ' + meson.build_root() + '\' to build ' + meson.project_name(),
'',
'',
]
message('\n'.join(output))
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