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meson.build
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meson.build
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# SPDX-License-Identifier: LGPL-2.1-or-later
project('elogind', 'c',
version : '255',
license : 'LGPLv2+',
default_options: [
'c_std=gnu11',
'prefix=/usr',
'sysconfdir=/etc',
'localstatedir=/var',
'warning_level=2',
],
meson_version : '>= 0.60.0',
)
libsystemd_version = '0.38.0'
#if 0 /// elogind does not ship libudev
# libudev_version = '1.7.8'
#endif // 0
conf = configuration_data()
#if 0 /// Set elogind Package PROJECT_URL
# conf.set_quoted('PROJECT_URL', 'https://systemd.io/')
#else // 0
support_url = 'https://github.com/elogind/elogind'
conf.set_quoted('PROJECT_URL', support_url)
#endif // 0
conf.set('PROJECT_VERSION', meson.project_version(),
description : 'Numerical project version (used where a simple number is expected)')
# This is to be used instead of meson.source_root(), as the latter will return
# the wrong result when elogind 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)
#if 0 /// fuzz regression tests are not supported by elogind
# 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)
#
#else // 0
fuzzer_build = false
conf.set10('FUZZ_USE_SIZE_LIMIT', false)
conf.set10('SD_BOOT', false)
#endif // 0
# 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')})
#####################################################################
#if 0 /// elogind does not need this
#
# # Try to install the git pre-commit hook
# add_git_hook_sh = find_program('tools/add-git-hook.sh', required : false)
# if add_git_hook_sh.found()
# git_hook = run_command(add_git_hook_sh, check : false)
# if git_hook.returncode() == 0
# message(git_hook.stdout().strip())
# endif
# endif
#else // 0
# elogind Note: We use precompiler masks for two reasons:
# 1) The masking is consistent with the sources
# 2) The git patch creator we use for preparing upstream patches
# manipulates commits to not take those masks out. Therefore
# it can be used to add commits updating the meson files, too.
#endif // 0
#####################################################################
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')
#if 0 /// UNNEEDED by elogind
# 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'))
#endif // 0
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')
#if 0 /// elogind needs this to be better configurable
# localstatedir = '/' / get_option('localstatedir')
#
# libexecdir = prefixdir / 'lib/systemd'
#else // 0
localstatedir = get_option('localstatedir')
localstatedir = localstatedir != '' ? localstatedir : '/var'
libexecdir = get_option('libexecdir')
if libexecdir != '' and not fs.is_absolute(libexecdir)
libexecdir = prefixdir / libexecdir
elif libexecdir == ''
libexecdir = prefixdir / 'lib/elogind'
endif
#endif // 0
pkglibdir = libdir / 'elogind'
#if 0 /// UNNEEDED by elogind
# install_sysconfdir = get_option('install-sysconfdir') != 'false'
#endif // 0
install_sysconfdir_samples = get_option('install-sysconfdir') == 'true'
# Dirs of external packages
#if 0 /// UNNEEDED by elogind
# pkgconfigdatadir = get_option('pkgconfigdatadir') != '' ? get_option('pkgconfigdatadir') : datadir / 'pkgconfig'
#endif // 0
pkgconfiglibdir = get_option('pkgconfiglibdir') != '' ? get_option('pkgconfiglibdir') : libdir / 'pkgconfig'
polkitpolicydir = datadir / 'polkit-1/actions'
#if 0 /// UNNEEDED by elogind
# 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
#endif // 0
modprobedir = prefixdir / 'lib/modprobe.d'
# Our own paths
#if 0 /// elogind has a bit different layout and does not need all of theses
# 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'
#
# configfiledir = get_option('configfiledir')
# if configfiledir == ''
# configfiledir= sysconfdir
# endif
# pkgconfigfiledir = configfiledir / 'systemd'
#
# docdir = get_option('docdir')
# if docdir == ''
# docdir = datadir / 'doc/systemd'
# endif
#else // 0
pkgdatadir = datadir / 'elogind'
pkgsysconfdir = sysconfdir / 'elogind'
pkgincludedir = includedir / 'elogind/systemd'
systemshutdowndir = libexecdir / 'system-shutdown'
systemsleepdir = libexecdir / 'system-sleep'
# in elogind, udev is external and thus configurable
udevlibexecdir = get_option('udevbindir')
udevlibexecdir = udevlibexecdir != '' ? udevlibexecdir : prefixdir / 'lib/udev'
udevrulesdir = get_option('udevrulesdir')
udevrulesdir = udevrulesdir != '' ? udevrulesdir : udevlibexecdir / 'rules.d'
elogindstatedir = localstatedir / 'lib/elogind'
factorydir = datadir / 'factory'
configfiledir = get_option('configfiledir')
if configfiledir == ''
configfiledir= sysconfdir
endif
pkgconfigfiledir = configfiledir / 'elogind'
docdir = get_option('docdir')
if docdir == ''
docdir = datadir / 'doc/elogind'
endif
htmldir = get_option('htmldir')
if htmldir == ''
htmldir = docdir / 'html'
endif
testsdir = prefixdir / 'lib/elogind/tests'
unittestsdir = testsdir / 'unit-tests'
testdata_dir = testsdir / 'testdata'
randomseeddir = localstatedir / 'lib/elogind'
#endif // 0
#if 1 /// Will elogind find system_bus_socket in /run/dbus or /var/run/dbus ?
varrunissymllink = run_command('test', '-L', '/var/run', check : false).returncode() == 0
message('Setting VARRUN_IS_SYMLINK to: @0@'.format(varrunissymllink))
conf.set10('VARRUN_IS_SYMLINK', varrunissymllink)
#endif // 1
pamlibdir = get_option('pamlibdir')
if pamlibdir == ''
pamlibdir = libdir / 'security'
endif
pamconfdir = get_option('pamconfdir')
if pamconfdir == ''
pamconfdir = prefixdir / 'lib/pam.d'
endif
#if 0 /// UNNEEDED by elogind
# libcryptsetup_plugins_dir = get_option('libcryptsetup-plugins-dir')
# if libcryptsetup_plugins_dir == ''
# libcryptsetup_plugins_dir = libdir / 'cryptsetup'
# endif
#
# 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
#
#endif // 0
conf.set_quoted('BINDIR', bindir)
#if 0 /// UNNEEDED by elogind
# 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'))
#endif // 0
conf.set_quoted('DOC_DIR', docdir)
#if 0 /// UNNEEDED by elogind
# conf.set_quoted('DOCUMENT_ROOT', pkgdatadir / 'gatewayd')
# conf.set_quoted('ENVIRONMENT_DIR', environmentdir)
#endif // 0
conf.set_quoted('INCLUDE_DIR', includedir)
conf.set_quoted('LIBDIR', libdir)
conf.set_quoted('LIBEXECDIR', libexecdir)
#if 0 /// UNNEEDED by elogind
# conf.set_quoted('MODPROBE_DIR', modprobedir)
# conf.set_quoted('MODULESLOAD_DIR', modulesloaddir)
#endif // 0
conf.set_quoted('PKGSYSCONFDIR', pkgsysconfdir)
conf.set_quoted('POLKIT_AGENT_BINARY_PATH', bindir / 'pkttyagent')
conf.set_quoted('PREFIX', prefixdir)
#if 0 /// UNNEEDED by elogind
# 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'))
#endif // 0
#if 0 /// UNNEEDED by elogind
# 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)
#else // 0
conf.set_quoted('SYSTEMD_CGROUPS_AGENT_PATH', libexecdir / 'elogind-cgroups-agent')
conf.set_quoted('ELOGIND_UACCESS_COMMAND_PATH', libexecdir / 'elogind-uaccess-command')
conf.set_quoted('SYSTEMD_BINARY_PATH', libexecdir / 'elogind')
#endif // 0
#if 0 /// UNNEEDED by elogind
# conf.set_quoted('SYSTEMD_CGROUPS_AGENT_PATH', libexecdir / 'systemd-cgroups-agent')
# conf.set_quoted('SYSTEMD_FSCK_PATH', libexecdir / 'systemd-fsck')
# conf.set_quoted('SYSTEMD_GROWFS_PATH', libexecdir / 'systemd-growfs')
# 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_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_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)
#endif // 0
conf.set_quoted('SYSTEM_SHUTDOWN_PATH', systemshutdowndir)
conf.set_quoted('SYSTEM_SLEEP_PATH', systemsleepdir)
#if 0 /// UNNEEDED by elogind
# 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)
#endif // 0
conf.set_quoted('UDEVLIBEXECDIR', udevlibexecdir)
#if 0 /// UNNEEDED by elogind
# 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())
#endif // 0
conf.set10('ENABLE_URLIFY', get_option('urlify'))
#if 0 /// UNNEEDED by elogind
# 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)
#endif // 0
conf.set('DEFAULT_TIMEOUT_SEC', get_option('default-timeout-sec'))
#if 0 /// UNNEEDED by elogind
# 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'))
#endif // 0
#####################################################################
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')
slow_tests = want_tests != 'false' and get_option('slow-tests')
#if 0 /// elogind does not utilize fuzzing
# fuzz_tests = want_tests != 'false' and get_option('fuzz-tests')
#endif // 0
install_tests = get_option('install-tests')
#if 0 /// elogind does not support fuzz stress testing (, yet).
# 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
#else // 0
cxx_cmd = ''
#endif // 0
# 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-unused-parameter',
]
possible_common_cc_flags = [
'-Warray-bounds', # clang
'-Warray-bounds=2',
'-Wdate-time',
'-Wendif-labels',
'-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',
'-Wunused-function',
'-Wwrite-strings',
'-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',
'--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)
have = cc.has_argument('-Wzero-length-bounds')
conf.set10('HAVE_ZERO_LENGTH_BOUNDS', have)
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'
has_wstringop_truncation = cc.has_argument('-Wstringop-truncation')
#####################################################################
# compilation result tests
conf.set('_GNU_SOURCE', 1)
conf.set('__SANE_USERSPACE_TYPES__', true)
conf.set10('HAVE_WSTRINGOP_TRUNCATION', has_wstringop_truncation)
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))
decl_headers = '''
#if 1 /// elogind supports system where _GNU_SOURCE is not set in ENV
# ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
# endif // _GNU_SOURCE
#endif // 1
#include <dirent.h>
#include <uchar.h>
#include <sys/mount.h>
#include <sys/stat.h>
'''
foreach decl : ['char16_t',
'char32_t',
'struct mount_attr',
'struct statx',
'struct dirent64',
]
# We get -1 if the size cannot be determined
have = cc.sizeof(decl, prefix : decl_headers, args : '-D_GNU_SOURCE') > 0
if decl == 'struct mount_attr'
if have
want_linux_fs_h = false
else
have = cc.sizeof(decl,
prefix : decl_headers + '#include <linux/fs.h>',
args : '-D_GNU_SOURCE') > 0
want_linux_fs_h = have
endif
endif
if decl == 'struct statx'
if have
want_linux_stat_h = false
else
have = cc.sizeof(decl,
prefix : decl_headers + '#include <linux/stat.h>',
args : '-D_GNU_SOURCE') > 0
want_linux_stat_h = have
endif
endif
conf.set10('HAVE_' + decl.underscorify().to_upper(), have)
endforeach
conf.set10('WANT_LINUX_STAT_H', want_linux_stat_h)
conf.set10('WANT_LINUX_FS_H', want_linux_fs_h)
foreach ident : ['secure_getenv', '__secure_getenv']
conf.set10('HAVE_' + ident.to_upper(), cc.has_function(ident))
endforeach
foreach ident : [
['memfd_create', '''#include <sys/mman.h>'''],
['gettid', '''#include <sys/types.h>
#include <unistd.h>'''],
['fchmodat2', '''#include <stdlib.h>
#include <fcntl.h>'''], # no known header declares fchmodat2
#if 0 /// Not used in elogind
# ['pivot_root', '''#include <stdlib.h>
# #include <unistd.h>'''], # no known header declares pivot_root
#endif // 0
#if 1 /// elogind supports musl, but upstream refuses to add qsort_r and has removed basename
['basename', '''#include <string.h>'''], # _GNU_SOURCE is defined, so test for GNU basename()
['qsort_r', '''#include <stdlib.h>'''],
#endif // 1
['ioprio_get', '''#include <sched.h>'''], # no known header declares ioprio_get
['ioprio_set', '''#include <sched.h>'''], # no known header declares ioprio_set
['name_to_handle_at', '''#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>'''],
['setns', '''#include <sched.h>'''],
['renameat2', '''#include <stdio.h>
#include <fcntl.h>'''],
['kcmp', '''#include <linux/kcmp.h>'''],
['keyctl', '''#include <sys/types.h>
#include <keyutils.h>'''],
['copy_file_range', '''#include <sys/syscall.h>
#include <unistd.h>'''],
['bpf', '''#include <sys/syscall.h>
#include <unistd.h>'''],
['statx', '''#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>'''],
['explicit_bzero' , '''#include <string.h>'''],
#if 0 /// elogind supports mus, which has reallocarray prototype in stdlib.h
# ['reallocarray', '''#include <stdlib.h>'''],
#else // 0
['reallocarray', '''#include <malloc.h>
#include <stdlib.h>'''],
#endif // 0
['set_mempolicy', '''#include <stdlib.h>
#include <unistd.h>'''],
['get_mempolicy', '''#include <stdlib.h>
#include <unistd.h>'''],
['pidfd_send_signal', '''#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>'''],
['pidfd_open', '''#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>'''],
['rt_sigqueueinfo', '''#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>'''],
['rt_tgsigqueueinfo', '''#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>'''],
['mallinfo', '''#include <malloc.h>'''],
['mallinfo2', '''#include <malloc.h>'''],
['execveat', '''#include <unistd.h>'''],
['close_range', '''#include <unistd.h>'''],
['epoll_pwait2', '''#include <sys/epoll.h>'''],
['mount_setattr', '''#include <sys/mount.h>'''],
['move_mount', '''#include <sys/mount.h>'''],
['open_tree', '''#include <sys/mount.h>'''],
['fsopen', '''#include <sys/mount.h>'''],
['fsconfig', '''#include <sys/mount.h>'''],
['fsmount', '''#include <sys/mount.h>'''],
['getdents64', '''#include <dirent.h>'''],
]
have = cc.has_function(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE')
conf.set10('HAVE_' + ident[0].to_upper(), have)
endforeach
if cc.has_function('getrandom', prefix : '''#include <sys/random.h>''', args : '-D_GNU_SOURCE')
conf.set10('USE_SYS_RANDOM_H', true)
conf.set10('HAVE_GETRANDOM', true)
else
have = cc.has_function('getrandom', prefix : '''#include <linux/random.h>''')
conf.set10('USE_SYS_RANDOM_H', false)
conf.set10('HAVE_GETRANDOM', have)
endif
#####################################################################
#if 1 /// elogind shall be usable with non-glibc libc variations
# Find out whether program_invocation[_short]_name is supported
have_pisn = cc.links('''
#define _GNU_SOURCE 1
#include <errno.h>
int main(void) {
if (program_invocation_name && program_invocation_short_name)
return 0;
return 1;
}
''', name : 'program_invocation[_short]_name test')
conf.set10('HAVE_PROGRAM_INVOCATION_NAME', have_pisn,
description : 'program_invocation[_short]_name is provided by libc')
#####################################################################
#endif // 1
sh = find_program('sh')
echo = find_program('echo')
sed = find_program('sed')
awk = find_program('awk')
stat = find_program('stat')
ln = find_program('ln')
git = find_program('git', required : false)
env = find_program('env')
#if 0 /// UNNEEDED by elogind
# rsync = find_program('rsync', required : false)
#endif // 0
diff = find_program('diff')
find = find_program('find')
#if 1 /// elogind needs a tool to symlink its installed headers.
meson_symlink_headers = project_source_root + '/tools/meson-symlink_headers.sh'
#endif // 1
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.
#if 0 /// elogind has a bit different list and some adaptions
# 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', ],
# ]
#else // 0
progs = [['halt', '/sbin/halt' ],
['kexec', '/usr/sbin/kexec' ],
['poweroff', '/sbin/poweroff' ],
['reboot', '/sbin/reboot' ],
['nologin', '/usr/sbin/nologin' ],
]
#endif // 0
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 0 /// unneeded by elogind
# conf.set_quoted('TELINIT', get_option('telinit-path'))
#
# if run_command(ln, '--relative', '--help', check : false).returncode() != 0
# error('ln does not support --relative (added in coreutils 8.16)')
# endif
#endif // 0
############################################################
gperf = find_program('gperf')
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',
'linux/memfd.h',
'linux/vm_sockets.h',
#if 1 /// elogind also needs to check printf.h
'printf.h',
#endif // 1
'sys/auxv.h',
'threads.h',
'valgrind/memcheck.h',
'valgrind/valgrind.h',
'linux/time_types.h',
'sys/sdt.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)
default_hierarchy = get_option('default-hierarchy')
conf.set_quoted('DEFAULT_HIERARCHY_NAME', default_hierarchy,
description : 'default cgroup hierarchy as string')
if default_hierarchy == 'legacy'
conf.set('DEFAULT_HIERARCHY', 'CGROUP_UNIFIED_NONE')
elif default_hierarchy == 'hybrid'
conf.set('DEFAULT_HIERARCHY', 'CGROUP_UNIFIED_SYSTEMD')
else
conf.set('DEFAULT_HIERARCHY', 'CGROUP_UNIFIED_ALL')
endif
#if 0 /// UNNEEDED by elogind
# 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'))
#else // 0
# elogind needs to know which cgroups controller to follow.
get_cg_ctrl_sh = find_program('tools/meson-get-cg-controller.sh')
with_cgroupctrl = get_option('cgroup-controller')
if with_cgroupctrl == '' or with_cgroupctrl == 'auto'
with_cgroupctrl = run_command(get_cg_ctrl_sh, [], check : false).stdout().strip()
elif with_cgroupctrl == 'none'
with_cgroupctrl = 'elogind'
endif
# No controller now is a problem:
if with_cgroupctrl == ''
error('Unable to determine cgroup controller, but cgroups support is mandatory!')
endif
conf.set_quoted('SYSTEMD_CGROUP_CONTROLLER', '_'.join(['',with_cgroupctrl]),
description : 'name of the cgroup controller to use')
conf.set_quoted('CGROUP_CONTROLLER_NAME', with_cgroupctrl)
conf.set_quoted('SYSTEMD_CGROUP_CONTROLLER_LEGACY',
'='.join(['name', with_cgroupctrl]))
conf.set_quoted('SYSTEMD_CGROUP_CONTROLLER_HYBRID',
'='.join(['name', with_cgroupctrl]))
############################################################
#endif // 0
default_user_shell = get_option('default-user-shell')
conf.set_quoted('DEFAULT_USER_SHELL', default_user_shell)