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meson.build
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# SPDX-License-Identifier: LGPL-2.1-or-later
project('systemd', 'c',
version : files('meson.version'),
license : 'LGPLv2+',
default_options: [
'c_std=gnu17',
'prefix=/usr',
'sysconfdir=/etc',
'localstatedir=/var',
'warning_level=2',
],
meson_version : '>= 0.60.0',
)
project_major_version = meson.project_version().split('.')[0].split('~')[0]
if meson.project_version().contains('.')
project_minor_version = meson.project_version().split('.')[-1].split('~')[0]
else
project_minor_version = '0'
endif
libsystemd_version = '0.40.0'
libudev_version = '1.7.10'
conf = configuration_data()
conf.set_quoted('PROJECT_URL', 'https://systemd.io/')
conf.set('PROJECT_VERSION', project_major_version,
description : 'Numerical project version (used where a simple number is expected)')
conf.set_quoted('PROJECT_VERSION_FULL', meson.project_version(), description : 'Full project version')
# This is to be used instead of meson.source_root(), as the latter will return
# the wrong result when systemd is being built as a meson subproject
project_source_root = meson.current_source_dir()
project_build_root = meson.current_build_dir()
relative_source_path = run_command('realpath',
'--relative-to=@0@'.format(project_build_root),
project_source_root,
check : true).stdout().strip()
conf.set_quoted('RELATIVE_SOURCE_PATH', relative_source_path)
conf.set10('BUILD_MODE_DEVELOPER', get_option('mode') == 'developer',
description : 'tailor build to development or release builds')
feature = get_option('log-message-verification')
if feature.auto()
have = conf.get('BUILD_MODE_DEVELOPER') == 1
else
have = feature.enabled()
endif
conf.set10('LOG_MESSAGE_VERIFICATION', have)
want_ossfuzz = get_option('oss-fuzz')
want_libfuzzer = get_option('llvm-fuzz')
if want_ossfuzz and want_libfuzzer
error('only one of oss-fuzz or llvm-fuzz can be specified')
endif
fuzzer_build = want_ossfuzz or want_libfuzzer
# If we're building *not* for actual fuzzing, allow input samples of any size
# (for testing and for reproduction of issues discovered with previously-higher
# limits).
conf.set10('FUZZ_USE_SIZE_LIMIT', fuzzer_build)
# We'll set this to '1' for EFI builds in a different place.
conf.set10('SD_BOOT', false)
# Create a title-less summary section early, so it ends up first in the output.
# More items are added later after they have been detected.
summary({'build mode' : get_option('mode')})
#####################################################################
# Try to install the git pre-commit hook
git_setup_sh = find_program('tools/git-setup.sh', required : false)
if git_setup_sh.found()
git_hook = run_command(git_setup_sh, check : false)
if git_hook.returncode() == 0
message(git_hook.stdout().strip())
endif
endif
#####################################################################
fs = import('fs')
if get_option('split-bin') == 'auto'
split_bin = not fs.is_symlink('/usr/sbin')
else
split_bin = get_option('split-bin') == 'true'
endif
conf.set10('HAVE_SPLIT_BIN', split_bin,
description : 'bin and sbin directories are separate')
have_standalone_binaries = get_option('standalone-binaries')
sysvinit_path = get_option('sysvinit-path')
sysvrcnd_path = get_option('sysvrcnd-path')
conf.set10('HAVE_SYSV_COMPAT', sysvinit_path != '' and sysvrcnd_path != '',
description : 'SysV init scripts and rcN.d links are supported')
conf.set10('CREATE_LOG_DIRS', get_option('create-log-dirs'))
if get_option('hibernate') and not get_option('initrd')
error('hibernate depends on initrd')
endif
conf.set10('BUMP_PROC_SYS_FS_FILE_MAX', get_option('bump-proc-sys-fs-file-max'))
conf.set10('BUMP_PROC_SYS_FS_NR_OPEN', get_option('bump-proc-sys-fs-nr-open'))
conf.set('HIGH_RLIMIT_NOFILE', 512*1024)
# Meson ignores the preceding arguments when joining paths if an absolute
# component is encountered, so this should canonicalize various paths when they
# are absolute or relative.
prefixdir = get_option('prefix')
if not prefixdir.startswith('/')
error('Prefix is not absolute: "@0@"'.format(prefixdir))
endif
prefixdir_noslash = '/' + prefixdir.strip('/')
bindir = prefixdir / get_option('bindir')
sbindir = prefixdir / (split_bin ? 'sbin' : 'bin')
sbin_to_bin = split_bin ? '../bin/' : ''
libdir = prefixdir / get_option('libdir')
sysconfdir = prefixdir / get_option('sysconfdir')
includedir = prefixdir / get_option('includedir')
datadir = prefixdir / get_option('datadir')
localstatedir = '/' / get_option('localstatedir')
libexecdir = prefixdir / 'lib/systemd'
pkglibdir = libdir / 'systemd'
install_sysconfdir = get_option('install-sysconfdir') != 'false'
install_sysconfdir_samples = get_option('install-sysconfdir') == 'true'
# Dirs of external packages
pkgconfigdatadir = get_option('pkgconfigdatadir') != '' ? get_option('pkgconfigdatadir') : datadir / 'pkgconfig'
pkgconfiglibdir = get_option('pkgconfiglibdir') != '' ? get_option('pkgconfiglibdir') : libdir / 'pkgconfig'
polkitpolicydir = datadir / 'polkit-1/actions'
polkitrulesdir = datadir / 'polkit-1/rules.d'
polkitpkladir = localstatedir / 'lib/polkit-1/localauthority/10-vendor.d'
xinitrcdir = get_option('xinitrcdir') != '' ? get_option('xinitrcdir') : sysconfdir / 'X11/xinit/xinitrc.d'
rpmmacrosdir = get_option('rpmmacrosdir')
if rpmmacrosdir != 'no'
rpmmacrosdir = prefixdir / rpmmacrosdir
endif
modprobedir = prefixdir / 'lib/modprobe.d'
# Our own paths
pkgdatadir = datadir / 'systemd'
environmentdir = prefixdir / 'lib/environment.d'
pkgsysconfdir = sysconfdir / 'systemd'
userunitdir = prefixdir / 'lib/systemd/user'
userpresetdir = prefixdir / 'lib/systemd/user-preset'
tmpfilesdir = prefixdir / 'lib/tmpfiles.d'
usertmpfilesdir = prefixdir / 'share/user-tmpfiles.d'
sysusersdir = prefixdir / 'lib/sysusers.d'
sysctldir = prefixdir / 'lib/sysctl.d'
binfmtdir = prefixdir / 'lib/binfmt.d'
modulesloaddir = prefixdir / 'lib/modules-load.d'
networkdir = prefixdir / 'lib/systemd/network'
systemgeneratordir = libexecdir / 'system-generators'
usergeneratordir = prefixdir / 'lib/systemd/user-generators'
systemenvgeneratordir = prefixdir / 'lib/systemd/system-environment-generators'
userenvgeneratordir = prefixdir / 'lib/systemd/user-environment-generators'
systemshutdowndir = libexecdir / 'system-shutdown'
systemsleepdir = libexecdir / 'system-sleep'
systemunitdir = prefixdir / 'lib/systemd/system'
systempresetdir = prefixdir / 'lib/systemd/system-preset'
udevlibexecdir = prefixdir / 'lib/udev'
udevrulesdir = udevlibexecdir / 'rules.d'
udevhwdbdir = udevlibexecdir / 'hwdb.d'
catalogdir = prefixdir / 'lib/systemd/catalog'
kerneldir = prefixdir / 'lib/kernel'
kernelinstalldir = kerneldir / 'install.d'
factorydir = datadir / 'factory'
bootlibdir = prefixdir / 'lib/systemd/boot/efi'
testsdir = prefixdir / 'lib/systemd/tests'
unittestsdir = testsdir / 'unit-tests'
testdata_dir = testsdir / 'testdata'
systemdstatedir = localstatedir / 'lib/systemd'
catalogstatedir = systemdstatedir / 'catalog'
randomseeddir = localstatedir / 'lib/systemd'
profiledir = libexecdir / 'portable' / 'profile'
repartdefinitionsdir = libexecdir / 'repart/definitions'
ntpservicelistdir = prefixdir / 'lib/systemd/ntp-units.d'
credstoredir = prefixdir / 'lib/credstore'
pcrlockdir = prefixdir / 'lib/pcrlock.d'
mimepackagesdir = prefixdir / 'share/mime/packages'
configfiledir = get_option('configfiledir')
if configfiledir == ''
configfiledir = sysconfdir
endif
pkgconfigfiledir = configfiledir / 'systemd'
docdir = get_option('docdir')
if docdir == ''
docdir = datadir / 'doc/systemd'
endif
pamlibdir = get_option('pamlibdir')
if pamlibdir == ''
pamlibdir = libdir / 'security'
endif
pamconfdir = get_option('pamconfdir')
if pamconfdir == ''
pamconfdir = prefixdir / 'lib/pam.d'
endif
sshconfdir = get_option('sshconfdir')
if sshconfdir == ''
sshconfdir = sysconfdir / 'ssh/ssh_config.d'
endif
conf.set10('LINK_SSH_PROXY_DROPIN', sshconfdir != 'no' and not sshconfdir.startswith('/usr/'))
sshdconfdir = get_option('sshdconfdir')
if sshdconfdir == ''
sshdconfdir = sysconfdir / 'ssh/sshd_config.d'
endif
conf.set10('LINK_SSHD_USERDB_DROPIN', sshdconfdir != 'no' and not sshdconfdir.startswith('/usr/'))
sshdprivsepdir = get_option('sshdprivsepdir')
conf.set10('CREATE_SSHDPRIVSEPDIR', sshdprivsepdir != 'no' and not sshdprivsepdir.startswith('/usr/'))
conf.set('SSHDPRIVSEPDIR', sshdprivsepdir, description : 'SSH privilege separation directory')
libcryptsetup_plugins_dir = get_option('libcryptsetup-plugins-dir')
if libcryptsetup_plugins_dir == ''
libcryptsetup_plugins_dir = libdir / 'cryptsetup'
endif
shellprofiledir = get_option('shellprofiledir')
if shellprofiledir == ''
shellprofiledir = sysconfdir / 'profile.d'
endif
conf.set10('LINK_SHELL_EXTRA_DROPIN', shellprofiledir != 'no' and not shellprofiledir.startswith('/usr/'))
conf.set10('LINK_OSC_CONTEXT_DROPIN', shellprofiledir != 'no' and not shellprofiledir.startswith('/usr/'))
conf.set('SHELLPROFILEDIR', shellprofiledir, description : 'shell profile directory')
memory_accounting_default = get_option('memory-accounting-default')
status_unit_format_default = get_option('status-unit-format-default')
if status_unit_format_default == 'auto'
status_unit_format_default = conf.get('BUILD_MODE_DEVELOPER') == 1 ? 'name' : 'description'
endif
conf.set_quoted('BINDIR', bindir)
conf.set_quoted('BINFMT_DIR', binfmtdir)
conf.set_quoted('BOOTLIBDIR', bootlibdir)
conf.set_quoted('CATALOG_DATABASE', catalogstatedir / 'database')
conf.set_quoted('CERTIFICATE_ROOT', get_option('certificate-root'))
conf.set_quoted('DOC_DIR', docdir)
conf.set_quoted('DOCUMENT_ROOT', pkgdatadir / 'gatewayd')
conf.set_quoted('ENVIRONMENT_DIR', environmentdir)
conf.set_quoted('INCLUDE_DIR', includedir)
conf.set_quoted('LIBDIR', libdir)
conf.set_quoted('LIBEXECDIR', libexecdir)
conf.set_quoted('KERNEL_INSTALL_DIR', kernelinstalldir)
conf.set_quoted('MODPROBE_DIR', modprobedir)
conf.set_quoted('MODULESLOAD_DIR', modulesloaddir)
conf.set_quoted('PKGSYSCONFDIR', pkgsysconfdir)
conf.set_quoted('POLKIT_AGENT_BINARY_PATH', bindir / 'pkttyagent')
conf.set_quoted('PREFIX', prefixdir)
conf.set_quoted('PREFIX_NOSLASH', prefixdir_noslash)
conf.set_quoted('RANDOM_SEED', randomseeddir / 'random-seed')
conf.set_quoted('RANDOM_SEED_DIR', randomseeddir)
conf.set_quoted('RC_LOCAL_PATH', get_option('rc-local'))
conf.set_quoted('SSHCONFDIR', sshconfdir)
conf.set_quoted('SSHDCONFDIR', sshdconfdir)
conf.set_quoted('SHELLPROFILEDIR', shellprofiledir)
conf.set_quoted('SYSCONF_DIR', sysconfdir)
conf.set_quoted('SYSCTL_DIR', sysctldir)
conf.set_quoted('SYSTEMCTL_BINARY_PATH', bindir / 'systemctl')
conf.set_quoted('SYSTEMD_BINARY_PATH', libexecdir / 'systemd')
conf.set_quoted('SYSTEMD_EXECUTOR_BINARY_PATH', libexecdir / 'systemd-executor')
conf.set_quoted('SYSTEMD_CATALOG_DIR', catalogdir)
conf.set_quoted('SYSTEMD_CGROUPS_AGENT_PATH', libexecdir / 'systemd-cgroups-agent')
conf.set_quoted('SYSTEMD_CRYPTSETUP_PATH', bindir / 'systemd-cryptsetup')
conf.set_quoted('SYSTEMD_EXPORT_PATH', libexecdir / 'systemd-export')
conf.set_quoted('SYSTEMD_FSCK_PATH', libexecdir / 'systemd-fsck')
conf.set_quoted('SYSTEMD_GROWFS_PATH', libexecdir / 'systemd-growfs')
conf.set_quoted('SYSTEMD_HOMEWORK_PATH', libexecdir / 'systemd-homework')
conf.set_quoted('SYSTEMD_IMPORT_FS_PATH', libexecdir / 'systemd-import-fs')
conf.set_quoted('SYSTEMD_IMPORT_PATH', libexecdir / 'systemd-import')
conf.set_quoted('SYSTEMD_INTEGRITYSETUP_PATH', libexecdir / 'systemd-integritysetup')
conf.set_quoted('SYSTEMD_KBD_MODEL_MAP', pkgdatadir / 'kbd-model-map')
conf.set_quoted('SYSTEMD_LANGUAGE_FALLBACK_MAP', pkgdatadir / 'language-fallback-map')
conf.set_quoted('SYSTEMD_MAKEFS_PATH', libexecdir / 'systemd-makefs')
conf.set_quoted('SYSTEMD_PULL_PATH', libexecdir / 'systemd-pull')
conf.set_quoted('SYSTEMD_SHUTDOWN_BINARY_PATH', libexecdir / 'systemd-shutdown')
conf.set_quoted('SYSTEMD_SYSUPDATE_PATH', libexecdir / 'systemd-sysupdate')
conf.set_quoted('SYSTEMD_TEST_DATA', testdata_dir)
conf.set_quoted('SYSTEMD_TTY_ASK_PASSWORD_AGENT_BINARY_PATH', bindir / 'systemd-tty-ask-password-agent')
conf.set_quoted('SYSTEMD_UPDATE_HELPER_PATH', libexecdir / 'systemd-update-helper')
conf.set_quoted('SYSTEMD_USERWORK_PATH', libexecdir / 'systemd-userwork')
conf.set_quoted('SYSTEMD_MOUNTWORK_PATH', libexecdir / 'systemd-mountwork')
conf.set_quoted('SYSTEMD_NSRESOURCEWORK_PATH', libexecdir / 'systemd-nsresourcework')
conf.set_quoted('SYSTEMD_VERITYSETUP_PATH', libexecdir / 'systemd-veritysetup')
conf.set_quoted('SYSTEM_CONFIG_UNIT_DIR', pkgsysconfdir / 'system')
conf.set_quoted('SYSTEM_DATA_UNIT_DIR', systemunitdir)
conf.set_quoted('SYSTEM_ENV_GENERATOR_DIR', systemenvgeneratordir)
conf.set_quoted('SYSTEM_GENERATOR_DIR', systemgeneratordir)
conf.set_quoted('SYSTEM_PRESET_DIR', systempresetdir)
conf.set_quoted('SYSTEM_SHUTDOWN_PATH', systemshutdowndir)
conf.set_quoted('SYSTEM_SLEEP_PATH', systemsleepdir)
conf.set_quoted('SYSTEM_SYSVINIT_PATH', sysvinit_path)
conf.set_quoted('SYSTEM_SYSVRCND_PATH', sysvrcnd_path)
conf.set_quoted('SYSUSERS_DIR', sysusersdir)
conf.set_quoted('TMPFILES_DIR', tmpfilesdir)
conf.set_quoted('USER_TMPFILES_DIR', usertmpfilesdir)
conf.set_quoted('UDEVLIBEXECDIR', udevlibexecdir)
conf.set_quoted('UDEV_HWDB_DIR', udevhwdbdir)
conf.set_quoted('UDEV_RULES_DIR', udevrulesdir)
conf.set_quoted('USER_CONFIG_UNIT_DIR', pkgsysconfdir / 'user')
conf.set_quoted('USER_DATA_UNIT_DIR', userunitdir)
conf.set_quoted('USER_ENV_GENERATOR_DIR', userenvgeneratordir)
conf.set_quoted('USER_GENERATOR_DIR', usergeneratordir)
conf.set_quoted('USER_KEYRING_PATH', pkgsysconfdir / 'import-pubring.gpg')
conf.set_quoted('USER_PRESET_DIR', userpresetdir)
conf.set_quoted('VENDOR_KEYRING_PATH', libexecdir / 'import-pubring.gpg')
conf.set('ANSI_OK_COLOR', 'ANSI_' + get_option('ok-color').underscorify().to_upper())
conf.set10('ENABLE_URLIFY', get_option('urlify'))
conf.set10('ENABLE_FEXECVE', get_option('fexecve'))
conf.set10('MEMORY_ACCOUNTING_DEFAULT', memory_accounting_default)
conf.set('STATUS_UNIT_FORMAT_DEFAULT', 'STATUS_UNIT_FORMAT_' + status_unit_format_default.to_upper())
conf.set_quoted('STATUS_UNIT_FORMAT_DEFAULT_STR', status_unit_format_default)
conf.set('DEFAULT_TIMEOUT_SEC', get_option('default-timeout-sec'))
conf.set('DEFAULT_USER_TIMEOUT_SEC', get_option('default-user-timeout-sec'))
conf.set('UPDATE_HELPER_USER_TIMEOUT_SEC', get_option('update-helper-user-timeout-sec'))
conf.set10('ENABLE_FIRST_BOOT_FULL_PRESET', get_option('first-boot-full-preset'))
#####################################################################
cc = meson.get_compiler('c')
userspace_c_args = []
userspace_c_ld_args = []
meson_build_sh = find_program('tools/meson-build.sh')
want_tests = get_option('tests')
want_slow_tests = want_tests != 'false' and get_option('slow-tests')
want_fuzz_tests = want_tests != 'false' and get_option('fuzz-tests')
want_integration_tests = want_tests != 'false' and get_option('integration-tests')
install_tests = want_tests != 'false' and get_option('install-tests')
if add_languages('cpp', native : false, required : fuzzer_build)
# Used only for tests
cxx = meson.get_compiler('cpp')
cxx_cmd = ' '.join(cxx.cmd_array())
else
cxx_cmd = ''
endif
if want_libfuzzer
fuzzing_engine = meson.get_compiler('cpp').find_library('Fuzzer', required : false)
if fuzzing_engine.found()
userspace_c_args += '-fsanitize-coverage=trace-pc-guard,trace-cmp'
elif cc.has_argument('-fsanitize=fuzzer-no-link')
userspace_c_args += '-fsanitize=fuzzer-no-link'
else
error('Looks like neither libFuzzer nor -fsanitize=fuzzer-no-link is supported')
endif
elif want_ossfuzz
fuzzing_engine = meson.get_compiler('cpp').find_library('FuzzingEngine')
endif
# Those generate many false positives, and we do not want to change the code to
# avoid them.
basic_disabled_warnings = [
'-Wno-missing-field-initializers',
'-Wno-unknown-warning-option',
'-Wno-unused-parameter',
'-Wno-nonnull-compare',
]
possible_common_cc_flags = [
'-Warray-bounds', # clang
'-Warray-bounds=2',
'-Wdate-time',
'-Wendif-labels',
'-Werror=discarded-qualifiers',
'-Werror=format=2',
'-Werror=format-signedness',
'-Werror=implicit-function-declaration',
'-Werror=implicit-int',
'-Werror=incompatible-pointer-types',
'-Werror=int-conversion',
'-Werror=missing-declarations',
'-Werror=missing-prototypes',
'-Werror=overflow',
'-Werror=override-init',
'-Werror=return-type',
'-Werror=shift-count-overflow',
'-Werror=shift-overflow=2',
'-Werror=strict-flex-arrays',
'-Werror=undef',
'-Wfloat-equal',
# gperf prevents us from enabling this because it does not emit fallthrough
# attribute with clang.
#'-Wimplicit-fallthrough',
'-Wimplicit-fallthrough=5',
'-Winit-self',
'-Wlogical-op',
'-Wmissing-include-dirs',
'-Wmissing-noreturn',
'-Wnested-externs',
'-Wold-style-definition',
'-Wpointer-arith',
'-Wredundant-decls',
'-Wshadow',
'-Wstrict-aliasing=2',
'-Wstrict-prototypes',
'-Wsuggest-attribute=noreturn',
'-Wunterminated-string-initialization',
'-Wunused-function',
'-Wwrite-strings',
'-Wzero-as-null-pointer-constant',
'-Wzero-length-bounds',
# negative arguments are correctly detected starting with meson 0.46.
'-Wno-error=#warnings', # clang
'-Wno-string-plus-int', # clang
'-fdiagnostics-show-option',
'-fno-common',
'-fstack-protector',
'-fstack-protector-strong',
'-fstrict-flex-arrays=3',
'--param=ssp-buffer-size=4',
]
possible_common_link_flags = [
'-fstack-protector',
]
c_args = get_option('c_args')
# Our json library does not support -ffinite-math-only, which is enabled by -Ofast or -ffast-math.
if (('-Ofast' in c_args or '-ffast-math' in c_args or '-ffinite-math-only' in c_args) and '-fno-finite-math-only' not in c_args)
error('-Ofast, -ffast-math, or -ffinite-math-only is specified in c_args.')
endif
# Disable -Wmaybe-uninitialized when compiling with -Os/-O1/-O3/etc. There are
# too many false positives with gcc >= 8. Effectively, we only test with -O0
# and -O2; this should be enough to catch most important cases without too much
# busywork. See https://github.com/systemd/systemd/pull/19226.
if cc.get_id() == 'gcc' and (not '02'.contains(get_option('optimization')) or
cc.version().version_compare('<10') or
'-Os' in c_args or
'-O1' in c_args or
'-O3' in c_args or
'-Og' in c_args)
possible_common_cc_flags += '-Wno-maybe-uninitialized'
endif
# Disable -Wno-unused-result with gcc, see
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425.
if cc.get_id() == 'gcc'
possible_common_cc_flags += '-Wno-unused-result'
endif
# --as-needed and --no-undefined are provided by meson by default,
# run 'meson configure' to see what is enabled
possible_link_flags = [
'-Wl,--fatal-warnings',
'-Wl,-z,now',
'-Wl,-z,relro',
]
if get_option('b_sanitize') == 'none'
possible_link_flags += '-Wl,--warn-common'
endif
if cc.get_id() == 'clang'
possible_common_cc_flags += [
'-Wno-typedef-redefinition',
'-Wno-gnu-variable-sized-type-not-at-end',
]
endif
if get_option('mode') == 'release'
# We could enable 'pattern' for developer mode, but that can interfere with
# valgrind and sanitizer builds. Also, clang does not zero-initialize unions,
# breaking some of our code (https://reviews.llvm.org/D68115).
possible_common_cc_flags += '-ftrivial-auto-var-init=zero'
endif
possible_cc_flags = [
'-fno-strict-aliasing',
'-fstrict-flex-arrays=1',
'-fvisibility=hidden',
]
if get_option('buildtype') != 'debug'
possible_cc_flags += [
'-ffunction-sections',
'-fdata-sections',
]
possible_link_flags += '-Wl,--gc-sections'
endif
if get_option('mode') == 'developer'
possible_cc_flags += '-fno-omit-frame-pointer'
endif
add_project_arguments(
cc.get_supported_arguments(
basic_disabled_warnings,
possible_common_cc_flags
),
language : 'c')
add_project_link_arguments(
cc.get_supported_link_arguments(possible_common_link_flags),
language : 'c')
userspace_c_args += cc.get_supported_arguments(possible_cc_flags)
userspace_c_ld_args += cc.get_supported_link_arguments(possible_link_flags)
if cc.compiles('''
#include <time.h>
#include <inttypes.h>
typedef uint64_t usec_t;
usec_t now(clockid_t clock);
int main(void) {
struct timespec now;
return 0;
}
''', args: '-Werror=shadow', name : '-Werror=shadow with local shadowing')
add_project_arguments('-Werror=shadow', language : 'c')
endif
if cxx_cmd != ''
add_project_arguments(cxx.get_supported_arguments(basic_disabled_warnings), language : 'cpp')
endif
cpp = ' '.join(cc.cmd_array() + get_option('c_args')) + ' -E'
# new in GCC 10
have = cc.has_argument('-Wzero-length-bounds')
conf.set10('HAVE_WARNING_ZERO_LENGTH_BOUNDS', have)
# new in GCC 15
have = cc.has_argument('-Wzero-as-null-pointer-constant')
conf.set10('HAVE_WARNING_ZERO_AS_NULL_POINTER_CONSTANT', have)
#####################################################################
# compilation result tests
conf.set('_GNU_SOURCE', 1)
conf.set('__SANE_USERSPACE_TYPES__', true)
conf.set('SIZEOF_DEV_T', cc.sizeof('dev_t', prefix : '#include <sys/types.h>'))
conf.set('SIZEOF_INO_T', cc.sizeof('ino_t', prefix : '#include <sys/types.h>'))
conf.set('SIZEOF_RLIM_T', cc.sizeof('rlim_t', prefix : '#include <sys/resource.h>'))
conf.set('SIZEOF_TIME_T', cc.sizeof('time_t', prefix : '#include <sys/time.h>'))
conf.set('SIZEOF_TIMEX_MEMBER', cc.sizeof('typeof(((struct timex *)0)->freq)', prefix : '#include <sys/timex.h>'))
long_max = cc.compute_int(
'LONG_MAX',
prefix : '#include <limits.h>',
guess : 0x7FFFFFFFFFFFFFFF,
high : 0x7FFFFFFFFFFFFFFF)
assert(long_max > 100000)
conf.set_quoted('LONG_MAX_STR', '@0@'.format(long_max))
foreach ident : [
['struct dirent64', '''##include <dirent.h>'''], # for musl, but only for compile time check, see dirent-util.h
['struct sched_attr', '''#include <sched.h>'''], # since glibc-2.41
]
# We get -1 if the size cannot be determined
have = cc.sizeof(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE') > 0
conf.set10('HAVE_' + ident[0].underscorify().to_upper(), have)
endforeach
foreach ident : [
['set_mempolicy', '''#include <sys/syscall.h>'''], # declared at numaif.h provided by libnuma, which we do not use
['get_mempolicy', '''#include <sys/syscall.h>'''], # declared at numaif.h provided by libnuma, which we do not use
['posix_getdents', '''#include <dirent.h>'''], # glibc does not implement it, but musl does
['strerrorname_np', '''#include <string.h>'''], # since glibc-2.32
['mallinfo', '''#include <malloc.h>'''], # deprecated since glibc-2.33, but check it for musl
['mallinfo2', '''#include <malloc.h>'''], # since glibc-2.33
['execveat', '''#include <unistd.h>'''], # since glibc-2.34
['close_range', '''#include <unistd.h>'''], # since glibc-2.34
['epoll_pwait2', '''#include <sys/epoll.h>'''], # since glibc-2.35
['fsconfig', '''#include <sys/mount.h>'''], # since glibc-2.36
['fsmount', '''#include <sys/mount.h>'''], # since glibc-2.36
['fsopen', '''#include <sys/mount.h>'''], # since glibc-2.36
['fspick', '''#include <sys/mount.h>'''], # since glibc-2.36
['mount_setattr', '''#include <sys/mount.h>'''], # since glibc-2.36
['move_mount', '''#include <sys/mount.h>'''], # since glibc-2.36
['open_tree', '''#include <sys/mount.h>'''], # since glibc-2.36
['pidfd_open', '''#include <sys/pidfd.h>'''], # since glibc-2.36
['pidfd_send_signal', '''#include <sys/pidfd.h>'''], # since glibc-2.36
['pidfd_spawn', '''#include <spawn.h>'''], # since glibc-2.39
['sched_setattr', '''#include <sched.h>'''], # since glibc-2.41
['ioprio_get', '''#include <sched.h>'''], # no known header declares ioprio_get
['ioprio_set', '''#include <sched.h>'''], # no known header declares ioprio_set
['rt_tgsigqueueinfo', '''#include <signal.h>'''], # no known header declares rt_tgsigqueueinfo
['quotactl_fd', '''#include <sys/quota.h>'''], # no known header declares quotactl_fd
['fchmodat2', '''#include <sys/stat.h>'''], # no known header declares fchmodat2
['bpf', '''#include <sys/syscall.h>'''], # no known header declares bpf
['kcmp', '''#include <sys/syscall.h>'''], # no known header declares kcmp
['keyctl', '''#include <sys/syscall.h>'''], # no known header declares keyctl
['pivot_root', '''#include <sys/syscall.h>'''], # no known header declares pivot_root
['setxattrat', '''#include <sys/xattr.h>'''], # no known header declares setxattrat
['removexattrat', '''#include <sys/xattr.h>'''], # no known header declares removexattrat
]
have = cc.has_function(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE')
conf.set10('HAVE_' + ident[0].to_upper(), have)
endforeach
#####################################################################
awk = find_program('awk')
diff = find_program('diff')
echo = find_program('echo')
env = find_program('env')
find = find_program('find')
getent = find_program('getent', required : false)
git = find_program('git', required : false)
gperf = find_program('gperf')
id = find_program('id', required : false)
ln = find_program('ln')
rsync = find_program('rsync', required : false)
sed = find_program('sed')
sh = find_program('sh')
stat = find_program('stat')
ln_s = ln.full_path() + ' -frsT -- "${DESTDIR:-}@0@" "${DESTDIR:-}@1@"'
# If -Dxxx-path option is found, use that. Otherwise, check in $PATH,
# /usr/sbin, /sbin, and fall back to the default from middle column.
progs = [['quotaon', '/usr/sbin/quotaon' ],
['quotacheck', '/usr/sbin/quotacheck' ],
['kmod', '/usr/bin/kmod' ],
['kexec', '/usr/sbin/kexec' ],
['sulogin', '/usr/sbin/sulogin' ],
['mount', '/usr/bin/mount', 'MOUNT_PATH'],
['umount', '/usr/bin/umount', 'UMOUNT_PATH'],
['loadkeys', '/usr/bin/loadkeys', 'KBD_LOADKEYS'],
['setfont', '/usr/bin/setfont', 'KBD_SETFONT'],
['nologin', '/usr/sbin/nologin', ],
]
foreach prog : progs
path = get_option(prog[0] + '-path')
if path != ''
message('Using @1@ for @0@'.format(prog[0], path))
else
exe = find_program(prog[0],
'/usr/sbin/' + prog[0],
'/sbin/' + prog[0],
required: false)
path = exe.found() ? exe.full_path() : prog[1]
endif
name = prog.length() > 2 ? prog[2] : prog[0].to_upper()
conf.set_quoted(name, path)
endforeach
if run_command(ln, '--relative', '--help', check : false).returncode() != 0
error('ln does not support --relative (added in coreutils 8.16)')
endif
#####################################################################
gperf_test_format = '''
#include <string.h>
const char* in_word_set(const char *, @0@);
@1@
'''
gperf_snippet = run_command(sh, '-c', 'echo foo,bar | "$1" -L ANSI-C', '_', gperf,
check : true)
gperf_test = gperf_test_format.format('size_t', gperf_snippet.stdout())
if cc.compiles(gperf_test)
gperf_len_type = 'size_t'
else
gperf_test = gperf_test_format.format('unsigned', gperf_snippet.stdout())
if cc.compiles(gperf_test)
gperf_len_type = 'unsigned'
else
error('unable to determine gperf len type')
endif
endif
message('gperf len type is @0@'.format(gperf_len_type))
conf.set('GPERF_LEN_TYPE', gperf_len_type,
description : 'The type of gperf "len" parameter')
#####################################################################
if not cc.has_header('sys/capability.h')
error('POSIX caps headers not found')
endif
foreach header : ['crypt.h',
'sys/sdt.h',
'threads.h',
'valgrind/memcheck.h',
'valgrind/valgrind.h',
]
conf.set10('HAVE_' + header.underscorify().to_upper(),
cc.has_header(header))
endforeach
#####################################################################
fallback_hostname = get_option('fallback-hostname')
if fallback_hostname == '' or fallback_hostname[0] == '.' or fallback_hostname[0] == '-'
error('Invalid fallback-hostname configuration')
# A more extensive test is done in test-hostname-util. Let's catch
# the most obvious errors here so we don't fail with an assert later.
endif
conf.set_quoted('FALLBACK_HOSTNAME', fallback_hostname)
extra_net_naming_schemes = []
extra_net_naming_map = []
foreach scheme: get_option('extra-net-naming-schemes').split(',')
if scheme != ''
name = scheme.split('=')[0]
value = scheme.split('=')[1]
NAME = name.underscorify().to_upper()
VALUE = []
foreach field: value.split('+')
VALUE += 'NAMING_' + field.underscorify().to_upper()
endforeach
extra_net_naming_schemes += 'NAMING_@0@ = @1@,'.format(NAME, '|'.join(VALUE))
extra_net_naming_map += '{ "@0@", NAMING_@1@ },'.format(name, NAME)
endif
endforeach
conf.set('EXTRA_NET_NAMING_SCHEMES', ' '.join(extra_net_naming_schemes))
conf.set('EXTRA_NET_NAMING_MAP', ' '.join(extra_net_naming_map))
default_net_naming_scheme = get_option('default-net-naming-scheme')
conf.set_quoted('DEFAULT_NET_NAMING_SCHEME', default_net_naming_scheme,
description : 'Default naming scheme as a string')
if default_net_naming_scheme != 'latest'
conf.set('_DEFAULT_NET_NAMING_SCHEME',
'NAMING_' + default_net_naming_scheme.underscorify().to_upper(),
description : 'Default naming scheme as a constant')
endif
time_epoch = get_option('time-epoch')
if time_epoch <= 0
time_epoch = run_command(sh, '-c', 'echo "$SOURCE_DATE_EPOCH"', check : true).stdout().strip()
if time_epoch == '' and git.found() and fs.is_dir('.git')
# If we're in a git repository, use the creation time of the latest git tag.
latest_tag = run_command(git, 'describe', '--abbrev=0', '--tags',
check : false)
if latest_tag.returncode() == 0
time_epoch = run_command(
git, 'log', '--no-show-signature', '-1', '--format=%at',
latest_tag.stdout().strip(),
check : false).stdout()
endif
endif
if time_epoch == ''
NEWS = files('NEWS')
time_epoch = run_command(stat, '-c', '%Y', NEWS,
check : true).stdout()
endif
time_epoch = time_epoch.strip().to_int()
endif
conf.set('TIME_EPOCH', time_epoch)
conf.set('CLOCK_VALID_RANGE_USEC_MAX', get_option('clock-valid-range-usec-max'))
default_user_shell = get_option('default-user-shell')
conf.set_quoted('DEFAULT_USER_SHELL', default_user_shell)
conf.set_quoted('DEFAULT_USER_SHELL_NAME', fs.name(default_user_shell))
foreach tuple : [['system-alloc-uid-min', 'SYS_UID_MIN', 1], # Also see login.defs(5).
['system-uid-max', 'SYS_UID_MAX', 999],
['system-alloc-gid-min', 'SYS_GID_MIN', 1],
['system-gid-max', 'SYS_GID_MAX', 999]]
v = get_option(tuple[0])
if v <= 0
v = run_command(
awk,
'/^\s*@0@\s+/ { uid=$2 } END { print uid }'.format(tuple[1]),
'/etc/login.defs',
check : false).stdout().strip()
if v == ''
v = tuple[2]
else
v = v.to_int()
endif
endif
conf.set(tuple[0].underscorify().to_upper(), v)
endforeach
if conf.get('SYSTEM_ALLOC_UID_MIN') >= conf.get('SYSTEM_UID_MAX')
error('Invalid uid allocation range')
endif
if conf.get('SYSTEM_ALLOC_GID_MIN') >= conf.get('SYSTEM_GID_MAX')
error('Invalid gid allocation range')
endif
dynamic_uid_min = get_option('dynamic-uid-min')
dynamic_uid_max = get_option('dynamic-uid-max')
conf.set('DYNAMIC_UID_MIN', dynamic_uid_min)
conf.set('DYNAMIC_UID_MAX', dynamic_uid_max)
container_uid_base_min = get_option('container-uid-base-min')
container_uid_base_max = get_option('container-uid-base-max')
conf.set('CONTAINER_UID_BASE_MIN', container_uid_base_min)
conf.set('CONTAINER_UID_BASE_MAX', container_uid_base_max)
foreign_uid_base = get_option('foreign-uid-base')
conf.set('FOREIGN_UID_BASE', foreign_uid_base)
nobody_user = get_option('nobody-user')
nobody_group = get_option('nobody-group')
if not meson.is_cross_build()
if getent.found()
ret = run_command(getent, 'passwd', '65534', check : false)
if ret.returncode() == 0
name = ret.stdout().split(':')[0]
if name != nobody_user
warning('\n' +
'The local user with the UID 65534 does not match the configured user name "@0@" of the nobody user (its name is @1@).\n'.format(nobody_user, name) +
'Your build will result in an user table setup that is incompatible with the local system.')
endif
endif
endif
if id.found()
ret = run_command(id, '-u', nobody_user, check : false)
if ret.returncode() == 0
uid = ret.stdout().strip().to_int()
if uid != 65534
warning('\n' +
'The local user with the configured user name "@0@" of the nobody user does not have UID 65534 (it has @1@).\n'.format(nobody_user, uid) +
'Your build will result in an user table setup that is incompatible with the local system.')
endif
endif
endif
if getent.found()
ret = run_command(getent, 'group', '65534', check : false)
if ret.returncode() == 0
name = ret.stdout().split(':')[0]
if name != nobody_group
warning('\n' +
'The local group with the GID 65534 does not match the configured group name "@0@" of the nobody group (its name is @1@).\n'.format(nobody_group, name) +
'Your build will result in an group table setup that is incompatible with the local system.')
endif
endif
endif
if id.found()
ret = run_command(id, '-g', nobody_group, check : false)
if ret.returncode() == 0
gid = ret.stdout().strip().to_int()
if gid != 65534
warning('\n' +
'The local group with the configured group name "@0@" of the nobody group does not have GID 65534 (it has @1@).\n'.format(nobody_group, gid) +
'Your build will result in an group table setup that is incompatible with the local system.')
endif
endif
endif
endif
if nobody_user != nobody_group and not (nobody_user == 'nobody' and nobody_group == 'nogroup')
warning('\n' +
'The configured user name "@0@" and group name "@1@" of the nobody user/group are not equivalent.\n'.format(nobody_user, nobody_group) +
'Please re-check that both "nobody-user" and "nobody-group" options are correctly set.')
endif
conf.set_quoted('NOBODY_USER_NAME', nobody_user)
conf.set_quoted('NOBODY_GROUP_NAME', nobody_group)
static_ugids = []
foreach option : ['adm-gid',
'audio-gid',
'cdrom-gid',
'clock-gid',
'dialout-gid',
'disk-gid',
'input-gid',
'kmem-gid',
'kvm-gid',
'lp-gid',
'render-gid',
'sgx-gid',
'tape-gid',
'tty-gid',
'users-gid',
'utmp-gid',
'video-gid',
'wheel-gid',
'systemd-journal-gid',
'systemd-network-uid',
'systemd-resolve-uid',
'systemd-timesync-uid']
name = option.underscorify().to_upper()
val = get_option(option)
# Ensure provided GID argument is positive, otherwise fall back to default assignment
conf.set(name, val > 0 ? val : '-')
if val > 0
static_ugids += '@0@:@1@'.format(option, val)
endif
endforeach
conf.set10('ENABLE_ADM_GROUP', get_option('adm-group'))
conf.set10('ENABLE_WHEEL_GROUP', get_option('wheel-group'))
dev_kvm_mode = get_option('dev-kvm-mode')
conf.set_quoted('DEV_KVM_MODE', dev_kvm_mode) # FIXME: convert to 0o… notation
conf.set10('DEV_KVM_UACCESS', dev_kvm_mode != '0666')
group_render_mode = get_option('group-render-mode')
conf.set_quoted('GROUP_RENDER_MODE', group_render_mode)
conf.set10('GROUP_RENDER_UACCESS', group_render_mode != '0666')
tty_mode = get_option('tty-mode')
# The setting is used as both octal integer and string through STRINGIFY().
# Here, only check if the value starts with '06', and further check will be done in terminal-util.h.
if not tty_mode.startswith('06')
error('Unexpected access mode "@0@" is specified for TTY/PTS device nodes, it must be "06xx".'.format(tty_mode))
elif tty_mode != '0600' and tty_mode != '0620'
warning('Unexpected access mode "@0@" is specified for TTY/PTS device nodes, typically it should be "0600" or "0620", proceeding anyway.'.format(tty_mode))
endif
# Do not use set_quoted() here, so that the value is available as an integer.
conf.set('TTY_MODE', tty_mode)
kill_user_processes = get_option('default-kill-user-processes')
conf.set10('KILL_USER_PROCESSES', kill_user_processes)
dns_servers = get_option('dns-servers')
conf.set_quoted('DNS_SERVERS', dns_servers)
ntp_servers = get_option('ntp-servers')
conf.set_quoted('NTP_SERVERS', ntp_servers)
default_locale = get_option('default-locale')
conf.set_quoted('SYSTEMD_DEFAULT_LOCALE', default_locale)
nspawn_locale = get_option('nspawn-locale')
conf.set_quoted('SYSTEMD_NSPAWN_LOCALE', nspawn_locale)
default_keymap = get_option('default-keymap')
if default_keymap == ''
# We canonicalize empty keymap to '@kernel', as it makes the default value
# in the factory provided /etc/vconsole.conf more obvious.
default_keymap = '@kernel'
endif
conf.set_quoted('SYSTEMD_DEFAULT_KEYMAP', default_keymap)
localegen_path = get_option('localegen-path')
if localegen_path != ''
conf.set_quoted('LOCALEGEN_PATH', localegen_path)
endif
conf.set10('HAVE_LOCALEGEN', localegen_path != '')
conf.set_quoted('GETTEXT_PACKAGE', meson.project_name())
service_watchdog = get_option('service-watchdog')
watchdog_value = service_watchdog == '' ? '' : 'WatchdogSec=' + service_watchdog
conf.set_quoted('SERVICE_WATCHDOG', watchdog_value)
conf.set_quoted('SUSHELL', get_option('debug-shell'))
conf.set_quoted('DEBUGTTY', get_option('debug-tty'))
enable_debug_hashmap = false
enable_debug_mmap_cache = false
enable_debug_siphash = false
foreach name : get_option('debug-extra')
if name == 'hashmap'
enable_debug_hashmap = true
elif name == 'mmap-cache'
enable_debug_mmap_cache = true
elif name == 'siphash'
enable_debug_siphash = true
else
message('unknown debug option "@0@", ignoring'.format(name))
endif
endforeach
conf.set10('ENABLE_DEBUG_HASHMAP', enable_debug_hashmap)
conf.set10('ENABLE_DEBUG_MMAP_CACHE', enable_debug_mmap_cache)
conf.set10('ENABLE_DEBUG_SIPHASH', enable_debug_siphash)
conf.set10('LOG_TRACE', get_option('log-trace'))
default_user_path = get_option('user-path')
if default_user_path != ''
conf.set_quoted('DEFAULT_USER_PATH', default_user_path)
endif
#####################################################################
threads = dependency('threads')
librt = cc.find_library('rt')
libm = cc.find_library('m')
libdl = cc.find_library('dl')
libcrypt = dependency('libcrypt', 'libxcrypt', required : false)
if not libcrypt.found()
# fallback to use find_library() if libcrypt is provided by glibc, e.g. for LibreELEC.
libcrypt = cc.find_library('crypt')
endif
libcap = dependency('libcap')
# On some architectures, libatomic is required. But on some installations,
# it is found, but actual linking fails. So let's try to use it opportunistically.
# If it is installed, but not needed, it will be dropped because of --as-needed.