# 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('KERNEL_INSTALL_DIR',                         kernelinstalldir)
# 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 = want_tests != 'false' and 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',
        '-Wno-nonnull-compare',
]

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',
        '-Wunterminated-string-initialization',
        '-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=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)

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 <sched.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <uchar.h>
'''

foreach decl : ['char16_t',
                'char32_t',
                'struct mount_attr',
                'struct statx',
                'struct dirent64',
                'struct sched_attr',
               ]

        # 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
        ['sched_setattr',     '''#include <sched.h>'''],      # no known header declares sched_setattr
        ['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)
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

#if 0 /// UNNEEDED by elogind
# 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)
#endif // 0

nobody_user = get_option('nobody-user')
nobody_group = get_option('nobody-group')

if not meson.is_cross_build()
        getent_result = run_command('getent', 'passwd', '65534', check : false)
        if getent_result.returncode() == 0
                name = getent_result.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
        id_result = run_command('id', '-u', nobody_user, check : false)
        if id_result.returncode() == 0
                id = id_result.stdout().strip().to_int()
                if id != 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, id) +
                                'Your build will result in an user table setup that is incompatible with the local system.')
                endif
        endif

        getent_result = run_command('getent', 'group', '65534', check : false)
        if getent_result.returncode() == 0
                name = getent_result.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
        id_result = run_command('id', '-g', nobody_group, check : false)
        if id_result.returncode() == 0
                id = id_result.stdout().strip().to_int()
                if id != 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, id) +
                                'Your build will result in an group table setup that is incompatible with the local system.')
                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)


#if 0 /// UNNEEDED by elogind
# static_ugids = []
# foreach option : ['adm-gid',
#                   'audio-gid',
#                   'cdrom-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 numeric, 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'))
#endif // 0

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')

kill_user_processes = get_option('default-kill-user-processes')
conf.set10('KILL_USER_PROCESSES', kill_user_processes)

#if 0 /// UNNEEDED by elogind
# 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 != '')
#endif // 0

conf.set_quoted('GETTEXT_PACKAGE', meson.project_name())

#if 0 /// UNNEEDED by elogind
# 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'))
#endif // 0

enable_debug_hashmap = false
enable_debug_mmap_cache = false
#if 1 /// additional elogind debug mode
enable_debug_elogind = false
#endif // 1
enable_debug_siphash = false
foreach name : get_option('debug-extra')
        if name == 'hashmap'
                enable_debug_hashmap = true
#if 0 /// UNNEEDED by elogind
#         elif name == 'mmap-cache'
#                 enable_debug_mmap_cache = true
#endif // 0
#if 1 /// additional elogind debug mode
        elif name == 'elogind'
                enable_debug_elogind = true
#endif // 1
        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)
#if 1 /// additional elogind debug mode
conf.set10('ENABLE_DEBUG_ELOGIND', enable_debug_elogind)
#endif // 1
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')
#if 0 /// UNNEEDED in elogind
# librt = cc.find_library('rt')
#else // 0
librt = []
#endif //  0
libm = cc.find_library('m')
libdl = cc.find_library('dl')
#if 0 /// elogind does not need libcrypt anywhere
# 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
#endif // 0
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.
if cc.links('''int main(int argc, char **argv) { return 0; }''',
            args : '-latomic',
            name : 'libatomic')
        libatomic = declare_dependency(link_args : '-latomic')
else
        libatomic = []
endif

#if 0 /// elogind does not need libcrypt anywhere
# crypt_header = conf.get('HAVE_CRYPT_H') == 1 ? '''#include <crypt.h>''' : '''#include <unistd.h>'''
# foreach ident : [
#         ['crypt_ra',               crypt_header],
#         ['crypt_preferred_method', crypt_header],
#         ['crypt_gensalt_ra',       crypt_header]]
#
#         have = cc.has_function(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE',
#                                dependencies : libcrypt)
#         conf.set10('HAVE_' + ident[0].to_upper(), have)
# endforeach
#endif // 0

#if 0 /// BPF is nowhere used or usable within elogind
# bpf_framework = get_option('bpf-framework')
# bpf_compiler = get_option('bpf-compiler')
# libbpf = dependency('libbpf',
#                     required : bpf_framework,
#                     version : bpf_compiler == 'gcc' ? '>= 1.0.0' : '>= 0.1.0')
# conf.set10('HAVE_LIBBPF', libbpf.found())
#
# if not libbpf.found()
#         conf.set10('BPF_FRAMEWORK', false)
# else
#         clang_found = false
#         clang_supports_bpf = false
#         bpf_gcc_found = false
#         bpftool_strip = false
#         deps_found = false
#
#         if bpf_compiler == 'clang'
#                 # Support 'versioned' clang/llvm-strip binaries, as seen on Debian/Ubuntu
#                 # (like clang-10/llvm-strip-10)
#                 if meson.is_cross_build() or cc.get_id() != 'clang' or cc.cmd_array()[0].contains('afl-clang') or cc.cmd_array()[0].contains('hfuzz-clang')
#                         r = find_program('clang',
#                                          required : bpf_framework,
#                                          version : '>= 10.0.0')
#                         clang_found = r.found()
#                         if clang_found
#                                 clang = r.full_path()
#                         endif
#                 else
#                         clang_found = true
#                         clang = cc.cmd_array()
#                 endif
#
#                 if clang_found
#                         # Check if 'clang -target bpf' is supported.
#                         clang_supports_bpf = run_command(clang, '-target', 'bpf', '--print-supported-cpus', check : false).returncode() == 0
#                 endif
#                 if bpf_framework.enabled() and not clang_supports_bpf
#                         error('bpf-framework was enabled but clang does not support bpf')
#                 endif
#         elif bpf_compiler == 'gcc'
#                 bpf_gcc = find_program('bpf-gcc',
#                                        'bpf-none-gcc',
#                                        required : true,
#                                        version : '>= 13.1.0')
#                 bpf_gcc_found = bpf_gcc.found()
#         endif
#
#         if clang_supports_bpf or bpf_gcc_found
#                 # Debian installs this in /usr/sbin/ which is not in $PATH.
#                 # We check for 'bpftool' first, honouring $PATH, and in /usr/sbin/ for Debian.
#                 # We use 'bpftool gen object' subcommand for bpftool strip, it was added by d80b2fcbe0a023619e0fc73112f2a02c2662f6ab (v5.13).
#                 bpftool = find_program('bpftool',
#                                        '/usr/sbin/bpftool',
#                                        required : bpf_framework.enabled() and bpf_compiler == 'gcc',
#                                        version : bpf_compiler == 'gcc' ? '>= 7.0.0' : '>= 5.13.0')
#
#                 if bpftool.found()
#                         bpftool_strip = true
#                         deps_found = true
#                 elif bpf_compiler == 'clang'
#                         # We require the 'bpftool gen skeleton' subcommand, it was added by 985ead416df39d6fe8e89580cc1db6aa273e0175 (v5.6).
#                         bpftool = find_program('bpftool',
#                                                '/usr/sbin/bpftool',
#                                                required : bpf_framework,
#                                                version : '>= 5.6.0')
#                 endif
#
#                 # We use `llvm-strip` as a fallback if `bpftool gen object` strip support is not available.
#                 if not bpftool_strip and bpftool.found() and clang_supports_bpf
#                         if not meson.is_cross_build()
#                                 llvm_strip_bin = run_command(clang, '--print-prog-name', 'llvm-strip',
#                                                              check : true).stdout().strip()
#                         else
#                                 llvm_strip_bin = 'llvm-strip'
#                         endif
#                         llvm_strip = find_program(llvm_strip_bin,
#                                                   required : bpf_framework,
#                                                   version : '>= 10.0.0')
#                         deps_found = llvm_strip.found()
#                 endif
#         endif
#
#         # Can build BPF program from source code in restricted C
#         conf.set10('BPF_FRAMEWORK', deps_found)
# endif
#else // 0
bpf_framework = 'disabled'
bpf_compiler  = 'none'
conf.set10('HAVE_LIBBPF', false)
conf.set10('BPF_FRAMEWORK', false)
#endif // 0

libmount = dependency('mount',
                      version : fuzzer_build ? '>= 0' : '>= 2.30')

#if 0 /// UNNEEDED by elogind
# libfdisk = dependency('fdisk',
#                       version : '>= 2.32',
#                       disabler : true,
#                       required : get_option('fdisk'))
# conf.set10('HAVE_LIBFDISK', libfdisk.found())
#
# # This prefers pwquality if both are enabled or auto.
# feature = get_option('pwquality').disable_auto_if(get_option('passwdqc').enabled())
# libpwquality = dependency('pwquality',
#                           version : '>= 1.4.1',
#                           required : feature)
# have = libpwquality.found()
# if not have
#         # libpwquality is used for both features for simplicity
#         libpwquality = dependency('passwdqc',
#                                   required : get_option('passwdqc'))
# endif
# conf.set10('HAVE_PWQUALITY', have)
# conf.set10('HAVE_PASSWDQC', not have and libpwquality.found())
#
#else // 0
libfdisk = []
libpwquality = []
conf.set10('HAVE_LIBFDISK', false)
conf.set10('HAVE_PWQUALITY', false)
conf.set10('HAVE_PASSWDQC', false)
#endif // 0

#if 0 /// UNNEEDED by elogind
# libseccomp = dependency('libseccomp',
#                         version : '>= 2.3.1',
#                         required : get_option('seccomp'))
# conf.set10('HAVE_SECCOMP', libseccomp.found())
#else // 0
libseccomp = []
conf.set10('HAVE_SECCOMP', false)
#endif // 0

libselinux = dependency('libselinux',
                        version : '>= 2.1.9',
                        required : get_option('selinux'))
conf.set10('HAVE_SELINUX', libselinux.found())

#if 0 /// UNNEEDED by elogind
# libapparmor = dependency('libapparmor',
#                          version : '>= 2.13',
#                          required : get_option('apparmor'))
# conf.set10('HAVE_APPARMOR', libapparmor.found())
#else // 0
libapparmor = []
conf.set10('HAVE_APPARMOR', false)
#endif // 0

#if 0 /// UNNEEDED by elogind
# have = get_option('smack') and get_option('smack-run-label') != ''
# conf.set10('HAVE_SMACK_RUN_LABEL', have)
# if have
#         conf.set_quoted('SMACK_RUN_LABEL', get_option('smack-run-label'))
# endif
#
# have = get_option('smack') and get_option('smack-default-process-label') != ''
# if have
#         conf.set_quoted('SMACK_DEFAULT_PROCESS_LABEL', get_option('smack-default-process-label'))
# endif
#else // 0
conf.set10('HAVE_SMACK_RUN_LABEL', false)
#endif // 0

feature = get_option('polkit')
libpolkit = dependency('polkit-gobject-1',
                       required : feature.disabled() ? feature : false)
install_polkit = feature.allowed()
install_polkit_pkla = libpolkit.found() and libpolkit.version().version_compare('< 0.106')
if install_polkit_pkla
        message('Old polkit detected, will install pkla files')
endif
conf.set10('ENABLE_POLKIT', install_polkit)

libacl = dependency('libacl',
                    required : get_option('acl'))
conf.set10('HAVE_ACL', libacl.found())

libaudit = dependency('audit',
                      required : get_option('audit'))
conf.set10('HAVE_AUDIT', libaudit.found())

#if 0 /// UNNEEDED by elogind
# libblkid = dependency('blkid',
#                       required : get_option('blkid'))
# conf.set10('HAVE_BLKID', libblkid.found())
# conf.set10('HAVE_BLKID_PROBE_SET_HINT',
#            libblkid.found() and cc.has_function('blkid_probe_set_hint', dependencies : libblkid))
#
# libkmod = dependency('libkmod',
#                      version : '>= 15',
#                      required : get_option('kmod'))
# conf.set10('HAVE_KMOD', libkmod.found())
#else // 0
libblkid = []
conf.set10('HAVE_BLKID', false)
conf.set10('HAVE_BLKID_PROBE_SET_HINT', false)
libkmod = []
conf.set10('HAVE_KMOD', false)
#endif // 0

libxenctrl = dependency('xencontrol',
                        version : '>= 4.9',
                        required : get_option('xenctrl'))
conf.set10('HAVE_XENCTRL', libxenctrl.found())
libxenctrl_cflags = libxenctrl.partial_dependency(includes: true, compile_args: true)

feature = get_option('pam')
libpam = dependency('pam',
                    required : feature.disabled() ? feature : false)
if not libpam.found()
        # Debian older than bookworm and Ubuntu older than 22.10 do not provide the .pc file.
        libpam = cc.find_library('pam', required : feature)
endif
libpam_misc = dependency('pam_misc',
                         required : feature.disabled() ? feature : false)
if not libpam_misc.found()
        libpam_misc = cc.find_library('pam_misc', required : feature)
endif
conf.set10('HAVE_PAM', libpam.found() and libpam_misc.found())

#if 0 /// UNNEEDED by elogind
# libmicrohttpd = dependency('libmicrohttpd',
#                            version : '>= 0.9.33',
#                            required : get_option('microhttpd'))
# conf.set10('HAVE_MICROHTTPD', libmicrohttpd.found())
#
# libcryptsetup = get_option('libcryptsetup')
# libcryptsetup_plugins = get_option('libcryptsetup-plugins')
# if libcryptsetup_plugins.enabled()
#         if libcryptsetup.disabled()
#                 error('libcryptsetup-plugins cannot be requested without libcryptsetup')
#         endif
#         libcryptsetup = libcryptsetup_plugins
# endif
#
# libcryptsetup = dependency('libcryptsetup',
#                            version : libcryptsetup_plugins.enabled() ? '>= 2.4.0' : '>= 2.0.1',
#                            required : libcryptsetup)
#
# have = libcryptsetup.found()
# foreach ident : ['crypt_set_metadata_size',
#                  'crypt_activate_by_signed_key',
#                  'crypt_token_max',
#                  'crypt_reencrypt_init_by_passphrase',
#                  'crypt_reencrypt',
#                  'crypt_set_data_offset']
#         have_ident = have and cc.has_function(
#                 ident,
#                 prefix : '#include <libcryptsetup.h>',
#                 dependencies : libcryptsetup)
#         conf.set10('HAVE_' + ident.to_upper(), have_ident)
# endforeach
# conf.set10('HAVE_LIBCRYPTSETUP', have)
#
# # TODO: Use has_function(required : libcryptsetup_plugins) with meson >= 1.3.0
# if libcryptsetup_plugins.allowed()
#         have = (cc.has_function(
#                         'crypt_activate_by_token_pin',
#                         prefix : '#include <libcryptsetup.h>',
#                         dependencies : libcryptsetup) and
#                 cc.has_function(
#                         'crypt_token_external_path',
#                         prefix : '#include <libcryptsetup.h>',
#                         dependencies : libcryptsetup))
# else
#         have = false
# endif
# conf.set10('HAVE_LIBCRYPTSETUP_PLUGINS', have)
#
# libcurl = dependency('libcurl',
#                      version : '>= 7.32.0',
#                      required : get_option('libcurl'))
# conf.set10('HAVE_LIBCURL', libcurl.found())
# conf.set10('CURL_NO_OLDIES', conf.get('BUILD_MODE_DEVELOPER') == 1)
#
# feature = get_option('libidn2').disable_auto_if(get_option('libidn').enabled())
# libidn = dependency('libidn2',
#                     required : feature)
# have = libidn.found()
# if not have
#         # libidn is used for both libidn and libidn2 objects
#         libidn = dependency('libidn',
#                             required : get_option('libidn'))
# endif
# conf.set10('HAVE_LIBIDN', not have and libidn.found())
# conf.set10('HAVE_LIBIDN2', have)
#
# libiptc = dependency('libiptc',
#                      required : get_option('libiptc'))
# conf.set10('HAVE_LIBIPTC', libiptc.found())
# libiptc_cflags = libiptc.partial_dependency(includes: true, compile_args: true)
#
# libqrencode = dependency('libqrencode',
#                          version : '>= 3',
#                          required : get_option('qrencode'))
# conf.set10('HAVE_QRENCODE', libqrencode.found())
#
# feature = get_option('gcrypt')
# libgcrypt = dependency('libgcrypt',
#                        required : feature)
# libgpg_error = dependency('gpg-error',
#                           required : feature.disabled() ? feature : false)
# if not libgpg_error.found()
#         # CentOS 8 does not provide the .pc file.
#         libgpg_error = cc.find_library('gpg-error', required : feature)
# endif
#
# have = libgcrypt.found() and libgpg_error.found()
# if not have
#         # link to neither of the libs if one is not found
#         libgcrypt = []
#         libgpg_error = []
# endif
# conf.set10('HAVE_GCRYPT', have)
#
# libgnutls = dependency('gnutls',
#                        version : '>= 3.1.4',
#                        required : get_option('gnutls'))
# conf.set10('HAVE_GNUTLS', libgnutls.found())
#
# libopenssl = dependency('openssl',
#                         version : '>= 1.1.0',
#                         required : get_option('openssl'))
# conf.set10('HAVE_OPENSSL', libopenssl.found())
#
# libp11kit = dependency('p11-kit-1',
#                        version : '>= 0.23.3',
#                        required : get_option('p11kit'))
# conf.set10('HAVE_P11KIT', libp11kit.found())
# libp11kit_cflags = libp11kit.partial_dependency(includes: true, compile_args: true)
#
# feature = get_option('libfido2').require(
#         conf.get('HAVE_OPENSSL') == 1,
#         error_message : 'openssl required')
# libfido2 = dependency('libfido2',
#                       required : feature)
# conf.set10('HAVE_LIBFIDO2', libfido2.found())
#
# tpm2 = dependency('tss2-esys tss2-rc tss2-mu tss2-tcti-device',
#                   required : get_option('tpm2'))
# conf.set10('HAVE_TPM2', tpm2.found())
# conf.set10('HAVE_TSS2_ESYS3', tpm2.found() and tpm2.version().version_compare('>= 3.0.0'))
#
# libdw = dependency('libdw',
#                    required : get_option('elfutils'))
# conf.set10('HAVE_ELFUTILS', libdw.found())
# # New in elfutils 0.177
# conf.set10('HAVE_DWELF_ELF_E_MACHINE_STRING',
#            libdw.found() and cc.has_function('dwelf_elf_e_machine_string', dependencies : libdw))
#
# libz = dependency('zlib',
#                   required : get_option('zlib'))
# conf.set10('HAVE_ZLIB', libz.found())
#
# feature = get_option('bzip2')
# libbzip2 = dependency('bzip2',
#                       required : feature.disabled() ? feature : false)
# if not libbzip2.found()
#         # Debian and Ubuntu do not provide the .pc file.
#         libbzip2 = cc.find_library('bz2', required : feature)
# endif
# conf.set10('HAVE_BZIP2', libbzip2.found())
#
# libxz = dependency('liblzma',
#                    required : get_option('xz'))
# conf.set10('HAVE_XZ', libxz.found())
#
# liblz4 = dependency('liblz4',
#                     version : '>= 1.3.0',
#                     required : get_option('lz4'))
# conf.set10('HAVE_LZ4', liblz4.found())
#
# libzstd = dependency('libzstd',
#                      version : '>= 1.4.0',
#                      required : get_option('zstd'))
# conf.set10('HAVE_ZSTD', libzstd.found())
#
# conf.set10('HAVE_COMPRESSION', libxz.found() or liblz4.found() or libzstd.found())
#
# compression = get_option('default-compression')
# if compression == 'auto'
#         if libzstd.found()
#                 compression = 'zstd'
#         elif liblz4.found()
#                 compression = 'lz4'
#         elif libxz.found()
#                 compression = 'xz'
#         else
#                 compression = 'none'
#         endif
# elif compression == 'zstd' and not libzstd.found()
#         error('default-compression=zstd requires zstd')
# elif compression == 'lz4' and not liblz4.found()
#         error('default-compression=lz4 requires lz4')
# elif compression == 'xz' and not libxz.found()
#         error('default-compression=xz requires xz')
# endif
# conf.set('DEFAULT_COMPRESSION', 'COMPRESSION_@0@'.format(compression.to_upper()))
#
#else // 0
libmicrohttpd = []
libcryptsetup = []
libcurl = []
libidn = []
libiptc = []
libqrencode = []
libgcrypt = []
libgpg_error = []
libgnutls = []
libp11kit_cflags = []
libp11kit = []
libfido2 = []
libdw = []
libz = []
libbzip2 = []
libxz = []
liblz4 = []
libzstd = []
libxkbcommon = []
conf.set10('HAVE_LIBCRYPTSETUP', false)
conf.set10('HAVE_LIBCRYPTSETUP_PLUGINS', false)
conf.set10('HAVE_GCRYPT', false)
conf.set10('HAVE_LIBCURL', false)
conf.set10('HAVE_LIBIDN2', false)
conf.set10('HAVE_LIBIDN', false)
conf.set10('HAVE_LIBIPTC', false)
conf.set10('HAVE_GNUTLS', false)
conf.set10('HAVE_OPENSSL', false)
conf.set10('HAVE_P11KIT', false)
conf.set10('HAVE_LIBFIDO2', false)
conf.set10('HAVE_QRENCODE', false)
conf.set10('HAVE_TPM2', false)
conf.set10('HAVE_BZIP2', false)
conf.set10('HAVE_LZ4', false)
conf.set10('HAVE_XZ', false)
conf.set10('HAVE_ELFUTILS', false)
conf.set10('HAVE_ZLIB', false)
conf.set10('HAVE_ZSTD', false)
conf.set10('HAVE_COMPRESSION', false)
conf.set10('HAVE_XKBCOMMON', false)
#endif // 0

#if 0 /// UNNEEDED by elogind
# libxkbcommon = dependency('xkbcommon',
#                           version : '>= 0.3.0',
#                           required : get_option('xkbcommon'))
# conf.set10('HAVE_XKBCOMMON', libxkbcommon.found())
#
# libpcre2 = dependency('libpcre2-8',
#                       required : get_option('pcre2'))
# conf.set10('HAVE_PCRE2', libpcre2.found())
#
# libglib =    dependency('glib-2.0',
#                         version : '>= 2.22.0',
#                         required : get_option('glib'))
# libgobject = dependency('gobject-2.0',
#                         version : '>= 2.22.0',
#                         required : get_option('glib'))
# libgio =     dependency('gio-2.0',
#                         required : get_option('glib'))
# conf.set10('HAVE_GLIB', libglib.found() and libgobject.found() and libgio.found())
#else // 0
libpcre2 = []
conf.set10('HAVE_PCRE2', false)
conf.set10('HAVE_GLIB', false)
#endif // 0

libdbus = dependency('dbus-1',
                     version : '>= 1.3.2',
                     required : get_option('dbus'))
conf.set10('HAVE_DBUS', libdbus.found())

dbusdatadir = libdbus.get_variable(pkgconfig: 'datadir', default_value: datadir) / 'dbus-1'

dbuspolicydir = get_option('dbuspolicydir')
if dbuspolicydir == ''
        dbuspolicydir = dbusdatadir / 'system.d'
endif

#if 0 /// UNNEEDED by elogind
# dbussessionservicedir = get_option('dbussessionservicedir')
# if dbussessionservicedir == ''
#         dbussessionservicedir = libdbus.get_variable(pkgconfig: 'session_bus_services_dir', default_value: dbusdatadir / 'services')
# endif
#endif // 0

dbussystemservicedir = get_option('dbussystemservicedir')
if dbussystemservicedir == ''
        dbussystemservicedir = libdbus.get_variable(pkgconfig: 'system_bus_services_dir', default_value: dbusdatadir / 'system-services')
endif

#if 0 /// UNNEEDED by elogind
# dbus_interfaces_dir = get_option('dbus-interfaces-dir')
# if dbus_interfaces_dir == '' or dbus_interfaces_dir == 'yes'
#         if meson.is_cross_build() and dbus_interfaces_dir != 'yes'
#                 dbus_interfaces_dir = 'no'
#                 warning('Exporting D-Bus interface XML files is disabled during cross build. Pass path or "yes" to force enable.')
#         else
#                 dbus_interfaces_dir = libdbus.get_variable(pkgconfig: 'interfaces_dir', default_value: dbusdatadir / 'interfaces')
#         endif
# endif
#
# dmi_arches = ['x86', 'x86_64', 'aarch64', 'arm', 'ia64', 'loongarch64', 'mips']
# conf.set10('HAVE_DMI', host_machine.cpu_family() in dmi_arches)
#
# # We support one or the other. If gcrypt is available, we assume it's there to
# # be used, and use it in preference.
# opt = get_option('cryptolib')
# if opt == 'openssl' and conf.get('HAVE_OPENSSL') == 0
#         error('openssl requested as the default cryptolib, but not available')
# endif
# conf.set10('PREFER_OPENSSL',
#            opt == 'openssl' or (opt == 'auto' and conf.get('HAVE_OPENSSL') == 1 and conf.get('HAVE_GCRYPT') == 0))
# conf.set10('HAVE_OPENSSL_OR_GCRYPT',
#            conf.get('HAVE_OPENSSL') == 1 or conf.get('HAVE_GCRYPT') == 1)
# lib_openssl_or_gcrypt = conf.get('PREFER_OPENSSL') == 1 ? [libopenssl] : [libgcrypt, libgpg_error]
#
# dns_over_tls = get_option('dns-over-tls')
# if dns_over_tls != 'false'
#         if dns_over_tls == 'gnutls' and conf.get('PREFER_OPENSSL') == 1
#                 error('Sorry, -Ddns-over-tls=gnutls is not supported when openssl is used as the cryptolib')
#         endif
#
#         if dns_over_tls == 'gnutls'
#                 have_openssl = false
#         else
#                 have_openssl = conf.get('HAVE_OPENSSL') == 1
#                 if dns_over_tls == 'openssl' and not have_openssl
#                         error('DNS-over-TLS support was requested with openssl, but dependencies are not available')
#                 endif
#         endif
#         if dns_over_tls == 'openssl' or have_openssl
#                 have_gnutls = false
#         else
#                 have_gnutls = conf.get('HAVE_GNUTLS') == 1 and libgnutls.version().version_compare('>= 3.6.0')
#                 if dns_over_tls != 'auto' and not have_gnutls
#                         str = dns_over_tls == 'gnutls' ? ' with gnutls' : ''
#                         error('DNS-over-TLS support was requested@0@, but dependencies are not available'.format(str))
#                 endif
#         endif
#         have = have_gnutls or have_openssl
# else
#         have = false
#         have_gnutls = false
#         have_openssl = false
# endif
# conf.set10('ENABLE_DNS_OVER_TLS', have)
# conf.set10('DNS_OVER_TLS_USE_GNUTLS', have_gnutls)
# conf.set10('DNS_OVER_TLS_USE_OPENSSL', have_openssl)
#
# default_dns_over_tls = get_option('default-dns-over-tls')
# if default_dns_over_tls != 'no' and conf.get('ENABLE_DNS_OVER_TLS') == 0
#         message('default-dns-over-tls cannot be enabled or set to opportunistic when DNS-over-TLS support is disabled. Setting default-dns-over-tls to no.')
#         default_dns_over_tls = 'no'
# endif
# conf.set('DEFAULT_DNS_OVER_TLS_MODE',
#          'DNS_OVER_TLS_' + default_dns_over_tls.underscorify().to_upper())
# conf.set_quoted('DEFAULT_DNS_OVER_TLS_MODE_STR', default_dns_over_tls)
#
# default_mdns = get_option('default-mdns')
# conf.set('DEFAULT_MDNS_MODE',
#          'RESOLVE_SUPPORT_' + default_mdns.to_upper())
# conf.set_quoted('DEFAULT_MDNS_MODE_STR', default_mdns)
#
# default_llmnr = get_option('default-llmnr')
# conf.set('DEFAULT_LLMNR_MODE',
#          'RESOLVE_SUPPORT_' + default_llmnr.to_upper())
# conf.set_quoted('DEFAULT_LLMNR_MODE_STR', default_llmnr)
#
# have = get_option('repart').require(
#         conf.get('HAVE_LIBFDISK') == 1,
#         error_message : 'fdisk required').allowed()
# conf.set10('ENABLE_REPART', have)
#
# default_dnssec = get_option('default-dnssec')
# if default_dnssec != 'no' and conf.get('HAVE_OPENSSL_OR_GCRYPT') == 0
#         message('default-dnssec cannot be set to yes or allow-downgrade openssl and gcrypt are disabled. Setting default-dnssec to no.')
#         default_dnssec = 'no'
# endif
# conf.set('DEFAULT_DNSSEC_MODE',
#          'DNSSEC_' + default_dnssec.underscorify().to_upper())
# conf.set_quoted('DEFAULT_DNSSEC_MODE_STR', default_dnssec)
#
# have = get_option('sysupdate').require(
#         conf.get('HAVE_OPENSSL') == 1 and
#         conf.get('HAVE_LIBFDISK') == 1,
#         error_message : 'fdisk and openssl required').allowed()
# conf.set10('ENABLE_SYSUPDATE', have)
#
# conf.set10('ENABLE_STORAGETM', get_option('storagetm'))
#
# have = get_option('importd').require(
#         conf.get('HAVE_LIBCURL') == 1 and
#         conf.get('HAVE_OPENSSL_OR_GCRYPT') == 1 and
#         conf.get('HAVE_ZLIB') == 1 and
#         conf.get('HAVE_XZ') == 1,
#         error_message : 'curl, openssl/grypt, zlib and xz required').allowed()
# conf.set10('ENABLE_IMPORTD', have)
#
# have = get_option('homed').require(
#         conf.get('HAVE_OPENSSL') == 1 and
#         conf.get('HAVE_LIBFDISK') == 1 and
#         conf.get('HAVE_LIBCRYPTSETUP') == 1,
#         error_message : 'openssl, fdisk and libcryptsetup required').allowed()
# conf.set10('ENABLE_HOMED', have)
#
# have = have and conf.get('HAVE_PAM') == 1
# conf.set10('ENABLE_PAM_HOME', have)
#
# feature = get_option('remote')
# have_deps = [conf.get('HAVE_MICROHTTPD') == 1,
#              conf.get('HAVE_LIBCURL') == 1]
# # sd-j-remote requires µhttpd, and sd-j-upload requires libcurl, so
# # it's possible to build one without the other. Complain only if
# # support was explicitly requested. The auxiliary files like sysusers
# # config should be installed when any of the programs are built.
# if feature.enabled() and not (have_deps[0] and have_deps[1])
#         error('remote support was requested, but dependencies are not available')
# endif
# have = feature.allowed() and (have_deps[0] or have_deps[1])
# conf.set10('ENABLE_REMOTE', have)
#else // 0
conf.set10('ENABLE_HOMED', false)
#endif // 0

#if 0 /// UNNEEDED by elogind
# feature = get_option('vmspawn').disable_auto_if(conf.get('BUILD_MODE_DEVELOPER') == 0)
# conf.set10('ENABLE_VMSPAWN', feature.allowed())
#
# foreach term : ['analyze',
#                 'backlight',
#                 'binfmt',
#                 'compat-mutable-uid-boundaries',
#                 'coredump',
#                 'efi',
#                 'environment-d',
#                 'firstboot',
#                 'gshadow',
#                 'hibernate',
#                 'hostnamed',
#                 'hwdb',
#                 'idn',
#                 'ima',
#                 'initrd',
#                 'kernel-install',
#                 'ldconfig',
#                 'localed',
#                 'logind',
#                 'machined',
#                 'networkd',
#                 'nscd',
#                 'nss-myhostname',
#                 'nss-systemd',
#                 'oomd',
#                 'portabled',
#                 'pstore',
#                 'quotacheck',
#                 'randomseed',
#                 'resolve',
#                 'rfkill',
#                 'smack',
#                 'sysext',
#                 'sysusers',
#                 'timedated',
#                 'timesyncd',
#                 'tmpfiles',
#                 'tpm',
#                 'userdb',
#                 'utmp',
#                 'vconsole',
#                 'xdg-autostart']
#else // 0
foreach term : ['efi',
                'smack',
                'utmp']
#endif // 0
        have = get_option(term)
        name = 'ENABLE_' + term.underscorify().to_upper()
        conf.set10(name, have)
endforeach

#if 1 /// elogind is always enabled
conf.set10('ENABLE_LOGIND', true)
#endif // 1

#if 1 /// elogind always looks at uid boundaries in /etc/login.defs
conf.set10('ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES', true)
#endif // 1

#if 0 /// UNNEEDED by elogind
# enable_sysusers = conf.get('ENABLE_SYSUSERS') == 1
#
# foreach tuple : [['nss-mymachines', 'machined'],
#                  ['nss-resolve',    'resolve']]
#         want = get_option(tuple[0])
#         if want.allowed()
#                 have = get_option(tuple[1])
#                 if want.enabled() and not have
#                         error('@0@ is requested but @1@ is disabled'.format(tuple[0], tuple[1]))
#                 endif
#         else
#                 have = false
#         endif
#         name = 'ENABLE_' + tuple[0].underscorify().to_upper()
#         conf.set10(name, have)
# endforeach
#
# enable_nss = false
# foreach term : ['ENABLE_NSS_MYHOSTNAME',
#                 'ENABLE_NSS_MYMACHINES',
#                 'ENABLE_NSS_RESOLVE',
#                 'ENABLE_NSS_SYSTEMD']
#         if conf.get(term) == 1
#                 enable_nss = true
#         endif
# endforeach
# conf.set10('ENABLE_NSS', enable_nss)
#
# conf.set10('ENABLE_TIMEDATECTL', get_option('timedated') or get_option('timesyncd'))
#endif // 0

conf.set10('SYSTEMD_SLOW_TESTS_DEFAULT', slow_tests)

############################################################


#if 0 /// UNSUPPORTED by elogind (we do not build boot images)
# pymod = import('python')
# python = pymod.find_installation('python3', required : true, modules : ['jinja2'])
# python_39 = python.language_version().version_compare('>=3.9')
#
# ############################################################
#
# if conf.get('BPF_FRAMEWORK') == 1
#         bpf_clang_flags = [
#                 '-std=gnu11',
#                 '-Wno-compare-distinct-pointer-types',
#                 '-fno-stack-protector',
#                 '-O2',
#                 '-target',
#                 'bpf',
#                 '-g',
#                 '-c',
#         ]
#
#         bpf_gcc_flags = [
#                 '-std=gnu11',
#                 '-fno-stack-protector',
#                 '-fno-ssa-phiopt',
#                 '-O2',
#                 '-mcpu=v3',
#                 '-mco-re',
#                 '-gbtf',
#                 '-c',
#         ]
#
#         # If c_args contains these flags copy them along with the values, in order to avoid breaking
#         # reproducible builds and other functionality
#         propagate_cflags = [
#                 '-ffile-prefix-map=',
#                 '-fdebug-prefix-map=',
#                 '-fmacro-prefix-map=',
#                 '--sysroot=',
#         ]
#
#         foreach opt : c_args
#                 foreach flag : propagate_cflags
#                         if opt.startswith(flag)
#                                 bpf_clang_flags += [opt]
#                                 bpf_gcc_flags += [opt]
#                                 break
#                         endif
#                 endforeach
#         endforeach
#
#         # Generate defines that are appropriate to tell the compiler what architecture
#         # we're compiling for. By default we just map meson's cpu_family to __<cpu_family>__.
#         # This dictionary contains the exceptions where this doesn't work.
#         #
#         # C.f. https://mesonbuild.com/Reference-tables.html#cpu-families
#         # and src/basic/missing_syscall_def.h.
#         cpu_arch_defines = {
#                 'ppc'         : ['-D__powerpc__', '-D__TARGET_ARCH_powerpc'],
#                 'ppc64'       : ['-D__powerpc64__', '-D__TARGET_ARCH_powerpc', '-D_CALL_ELF=2'],
#                 'riscv32'     : ['-D__riscv', '-D__riscv_xlen=32', '-D__TARGET_ARCH_riscv'],
#                 'riscv64'     : ['-D__riscv', '-D__riscv_xlen=64', '-D__TARGET_ARCH_riscv'],
#                 'x86'         : ['-D__i386__', '-D__TARGET_ARCH_x86'],
#                 's390x'       : ['-D__s390__', '-D__s390x__', '-D__TARGET_ARCH_s390'],
#
#                 # For arm, assume hardware fp is available.
#                 'arm'         : ['-D__arm__', '-D__ARM_PCS_VFP', '-D__TARGET_ARCH_arm'],
#                 'loongarch64' : ['-D__loongarch__', '-D__loongarch_grlen=64', '-D__TARGET_ARCH_loongarch']
#         }
#
#         bpf_arch_flags = cpu_arch_defines.get(host_machine.cpu_family(),
#                                               ['-D__@0@__'.format(host_machine.cpu_family())])
#         if bpf_compiler == 'gcc'
#                 bpf_arch_flags += ['-m' + host_machine.endian() + '-endian']
#         endif
#
#         libbpf_include_dir = libbpf.get_variable(pkgconfig : 'includedir')
#
#         bpf_o_unstripped_cmd = []
#         if bpf_compiler == 'clang'
#                 bpf_o_unstripped_cmd += [
#                         clang,
#                         bpf_clang_flags,
#                         bpf_arch_flags,
#                 ]
#         elif bpf_compiler == 'gcc'
#                 bpf_o_unstripped_cmd += [
#                         bpf_gcc,
#                         bpf_gcc_flags,
#                         bpf_arch_flags,
#                 ]
#         endif
#
#         bpf_o_unstripped_cmd += ['-I.']
#
#         if cc.get_id() == 'gcc' or meson.is_cross_build()
#                 if cc.get_id() != 'gcc'
#                         warning('Cross compiler is not gcc. Guessing the target triplet for bpf likely fails.')
#                 endif
#                 target_triplet_cmd = run_command(cc.cmd_array(), '-print-multiarch', check: false)
#         else
#                 # clang does not support -print-multiarch (D133170) and its -dump-machine
#                 # does not match multiarch. Query gcc instead.
#                 target_triplet_cmd = run_command('gcc', '-print-multiarch', check: false)
#         endif
#         if target_triplet_cmd.returncode() == 0
#                 target_triplet = target_triplet_cmd.stdout().strip()
#                 bpf_o_unstripped_cmd += [
#                         '-isystem',
#                         '/usr/include/@0@'.format(target_triplet)
#                 ]
#         endif
#
#         bpf_o_unstripped_cmd += [
#                 '-idirafter',
#                 libbpf_include_dir,
#                 '@INPUT@',
#                 '-o',
#                 '@OUTPUT@'
#         ]
#
#         if bpftool_strip
#                 bpf_o_cmd = [
#                         bpftool,
#                         'gen',
#                         'object',
#                         '@OUTPUT@',
#                         '@INPUT@'
#                 ]
#         elif bpf_compiler == 'clang'
#                 bpf_o_cmd = [
#                         llvm_strip,
#                         '-g',
#                         '@INPUT@',
#                         '-o',
#                         '@OUTPUT@'
#                 ]
#         endif
#
#         skel_h_cmd = [
#                 bpftool,
#                 'gen',
#                 'skeleton',
#                 '@INPUT@'
#         ]
# endif
#
# #####################################################################
#
# efi_arch = {
#         'aarch64'     : 'aa64',
#         'arm'         : 'arm',
#         'loongarch32' : 'loongarch32',
#         'loongarch64' : 'loongarch64',
#         'riscv32'     : 'riscv32',
#         'riscv64'     : 'riscv64',
#         'x86_64'      : 'x64',
#         'x86'         : 'ia32',
# }.get(host_machine.cpu_family(), '')
#
# pyelftools = pymod.find_installation('python3',
#                                      required : get_option('bootloader'),
#                                      modules : ['elftools'])
#
# have = get_option('bootloader').require(
#         pyelftools.found() and get_option('efi') and efi_arch != '',
#         error_message : 'unsupported EFI arch or EFI support is disabled').allowed()
# conf.set10('ENABLE_BOOTLOADER', have)
# conf.set_quoted('EFI_MACHINE_TYPE_NAME', have ? efi_arch : '')
#
# efi_arch_alt = ''
# efi_cpu_family_alt = ''
# if have and efi_arch == 'x64' and cc.links('''
#                 #include <limits.h>
#                 int main(int argc, char *argv[]) {
#                         return __builtin_popcount(argc - CHAR_MAX);
#                 }''', args : ['-m32', '-march=i686'], name : '32bit build possible')
#         efi_arch_alt = 'ia32'
#         efi_cpu_family_alt = 'x86'
# endif
#
# pefile = pymod.find_installation('python3', required: false, modules : ['pefile'])
#
# want_ukify = get_option('ukify').require(python_39 and (want_tests != 'true' or pefile.found()), error_message : 'Python >= 3.9 and pefile required').allowed()
# conf.set10('ENABLE_UKIFY', want_ukify)
#endif // 0

############################################################

#if 0 /// UNUSED by elogind
# check_efi_alignment_py = find_program('tools/check-efi-alignment.py')
#endif // 0
check_version_history_py = find_program('tools/check-version-history.py')
#if 0 /// UNUSED by elogind
# elf2efi_py = find_program('tools/elf2efi.py')
#endif // 0
export_dbus_interfaces_py = find_program('tools/dbus_exporter.py')
generate_gperfs = find_program('tools/generate-gperfs.py')
#if 0 /// UNUSED by elogind
# make_autosuspend_rules_py = find_program('tools/make-autosuspend-rules.py')
#endif // 0
make_directive_index_py = find_program('tools/make-directive-index.py')
sync_docs_py = find_program('tools/sync-docs.py')
make_man_index_py = find_program('tools/make-man-index.py')
meson_render_jinja2 = find_program('tools/meson-render-jinja2.py')
update_dbus_docs_py = find_program('tools/update-dbus-docs.py')
#if 0 /// UNNEEDED by elogind
# update_hwdb_autosuspend_sh = find_program('tools/update-hwdb-autosuspend.sh')
# update_hwdb_sh = find_program('tools/update-hwdb.sh')
#endif // 0
update_man_rules_py = find_program('tools/update-man-rules.py')
update_syscall_tables_sh = find_program('tools/update-syscall-tables.sh')
xml_helper_py = find_program('tools/xml_helper.py')

#if 1 /// These are not needed by elogind, but meson wants them although they are commented out.
conf.set_quoted('CERTIFICATE_ROOT',                 '/dev/null')
conf.set_quoted('MEMORY_ACCOUNTING_DEFAULT_YES_NO', 'N/A')
conf.set_quoted('MOUNT_PATH',                       '/dev/null')
conf.set_quoted('SYSTEM_ENV_GENERATOR_PATH',        '/dev/null')
conf.set_quoted('SYSTEM_GENERATOR_PATH',            '/dev/null')
conf.set_quoted('UMOUNT_PATH',                      '/dev/null')
conf.set_quoted('USER_ENV_GENERATOR_PATH',          '/dev/null')
conf.set_quoted('USER_GENERATOR_PATH',              '/dev/null')
conf.set_quoted('DEBUGTTY',                         '/dev/null')
############################################################
#endif // 1

version_tag = get_option('version-tag')
version_h = vcs_tag(
        input : 'src/version/version.h.in',
        output : 'version.h',
        command: [project_source_root / 'tools/meson-vcs-tag.sh',
                  project_source_root,
                  meson.project_version(),
                  version_tag,
                 ])

shared_lib_tag = get_option('shared-lib-tag')
if shared_lib_tag == ''
        shared_lib_tag = meson.project_version()
endif

############################################################

if get_option('b_coverage')
        userspace_c_args += ['-include', 'src/basic/coverage.h']
endif

############################################################

config_h = configure_file(
        output : 'config.h',
        configuration : conf)

userspace_c_args += ['-include', 'config.h']

jinja2_cmdline = [meson_render_jinja2, config_h, version_h]

userspace = declare_dependency(
        compile_args : userspace_c_args,
        link_args : userspace_c_ld_args,
        sources : version_h,
)

man_page_depends = []

############################################################

simple_tests = []
libelogind_tests = []
simple_fuzzers = []
catalogs = []
modules = [] # nss, pam, and other plugins
executables = []
executables_by_name = {}
fuzzer_exes = []

# binaries that have --help and are intended for use by humans,
# usually, but not always, installed in /bin.
public_programs = []

# D-Bus introspection XML export
dbus_programs = []

# A list of boot stubs. Required for testing of ukify.
boot_stubs = []

build_dir_include = include_directories('.')

basic_includes = include_directories(
        'src/basic',
        'src/fundamental',
#if 1 /// elogind also needs access to core and login in more places
        'src/core',
        'src/login',
#endif // 1
        'src/systemd',
        '.')

#if 0 /// elogind has fewer subdirectories here, and needs a few others
# libsystemd_includes = [basic_includes, include_directories(
#         'src/libsystemd/sd-bus',
#         'src/libsystemd/sd-device',
#         'src/libsystemd/sd-event',
#         'src/libsystemd/sd-hwdb',
#         'src/libsystemd/sd-id128',
#         'src/libsystemd/sd-journal',
#         'src/libsystemd/sd-netlink',
#         'src/libsystemd/sd-network',
#         'src/libsystemd/sd-resolve')]
#else // 0
libelogind_includes = [basic_includes, include_directories(
        'src/libelogind/sd-bus',
        'src/libelogind/sd-device',
        'src/libelogind/sd-event',
        'src/libelogind/sd-hwdb',
        'src/libelogind/sd-id128',
        'src/libelogind/sd-journal',
        'src/sleep',
        'src/update-utmp')]
#endif // 0

includes = [libelogind_includes, include_directories('src/shared')]

subdir('po')
#if 0 /// UNNEEDED by elogind
# subdir('catalog')
#endif // 0
subdir('src/fundamental')
subdir('src/basic')
subdir('src/libelogind')
subdir('src/shared')
#if 0 /// UNNEEDED by elogind
# subdir('src/libudev')
#endif // 0

libelogind = shared_library(
        'elogind',
        version : libsystemd_version,
        include_directories : libelogind_includes,
        link_args : ['-shared',
#if 0 /// elogind is a lot simpler in its needs.
#                      # Make sure our library is never deleted from memory, so that our open logging fds don't leak on dlopen/dlclose cycles.
#                      '-z', 'nodelete',
#                      '-Wl,--version-script=' + libsystemd_sym_path],
#         link_with : [libbasic,
#                      libbasic_gcrypt,
#                      libbasic_compress],
#         link_whole : [libsystemd_static],
#         dependencies : [librt,
#                         threads,
#                         userspace],
#         link_depends : libsystemd_sym,
#else // 0
                     '-Wl,--version-script=' + libelogind_sym_path],
        link_with : [libbasic],
        link_whole : [libelogind_static],
        dependencies : [threads,
                        userspace],
        link_depends : libelogind_sym,
#endif // 0
        install : true,
#if 0 /// elogind uses libelogind as tag
#         install_tag: 'libsystemd',
#else // 0
        install_tag: 'libelogind',
#endif // 0
        install_dir : libdir)

alias_target('libelogind', libelogind)

#if 0 /// Do a real elogind masking else, diff always goes haywire here
# install_libsystemd_static = static_library(
#         'systemd',
#         libsystemd_sources,
#else // 0
install_libelogind_static = static_library(
        'elogind',
        libelogind_sources,
#endif // 0
        basic_sources,
#if 0 /// No gcrypt or compress with elogind
#         basic_gcrypt_sources,
#         basic_compress_sources,
#endif // 0
        fundamental_sources,
        include_directories : libelogind_includes,
        build_by_default : static_libelogind != 'false',
        install : static_libelogind != 'false',
        install_tag: 'libelogind',
#if 0 /// elogind only needs libcap, libdl, libmount threads and selinux.
#         install_dir : libdir,
#         pic : static_libsystemd_pic,
#         dependencies : [libblkid,
#                         libcap,
#                         libdl,
#                         libgcrypt,
#                         liblz4,
#                         libmount,
#                         libopenssl,
#                         librt,
#                         libxz,
#                         libzstd,
#                         threads,
#                         userspace],
#         c_args : libsystemd_c_args + (static_libsystemd_pic ? [] : ['-fno-PIC']))
#
# libudev = shared_library(
#         'udev',
#         version : libudev_version,
#         include_directories : includes,
#         link_args : ['-shared',
#                      '-Wl,--version-script=' + libudev_sym_path],
#         link_with : [libsystemd_static, libshared_static],
#         link_whole : libudev_basic,
#         dependencies : [threads,
#                         userspace],
#         link_depends : libudev_sym,
#         install : true,
#         install_tag: 'libudev',
#         install_dir : libdir)
#
# alias_target('libudev', libudev)
#
# install_libudev_static = static_library(
#         'udev',
#         basic_sources,
#         fundamental_sources,
#         shared_sources,
#         libsystemd_sources,
#         libudev_sources,
#         include_directories : includes,
#         build_by_default : static_libudev != 'false',
#         install : static_libudev != 'false',
#         install_tag: 'libudev',
#         install_dir : libdir,
#         link_depends : libudev_sym,
#         dependencies : [libmount,
#                         libshared_deps,
#                         userspace],
#         c_args : static_libudev_pic ? [] : ['-fno-PIC'],
#         pic : static_libudev_pic)
#else // 0
        dependencies : [threads,
                        libcap,
                        libdl,
                        libmount,
                        libselinux,
                        userspace],
        c_args : libelogind_c_args)
#endif // 0

#if 1 /// elogind depends on external libudev:
libudev = dependency('libudev', required : true)
#endif // 1

############################################################

runtest_env = custom_target(
        'elogind-runtest.env',
        output : 'elogind-runtest.env',
        command : [sh, '-c',
                   '{ echo SYSTEMD_TEST_DATA=@0@; echo SYSTEMD_CATALOG_DIR=@1@; } >@OUTPUT@'.format(
                           project_source_root / 'test',
                           project_build_root / 'catalog')],
        depends : catalogs,
        build_by_default : true)

test_cflags = ['-DTEST_CODE=1']
# We intentionally do not do inline initializations with definitions for a
# bunch of _cleanup_ variables in tests, to ensure valgrind is triggered if we
# use the variable unexpectedly. This triggers a lot of maybe-uninitialized
# false positives when the combination of -O2 and -flto is used. Suppress them.
if '-O2' in c_args and '-flto=auto' in c_args
        test_cflags += cc.first_supported_argument('-Wno-maybe-uninitialized')
endif

############################################################

executable_template = {
        'include_directories' : includes,
        'link_with' : libshared,
        'install_rpath' : pkglibdir,
        'install' : true,
}

#if 0 /// UNNEEDED by elogind
# generator_template = executable_template + {
#         'install_dir' : systemgeneratordir,
# }
#endif // 0

libexec_template = executable_template + {
        'install_dir' : libexecdir,
}

executable_additional_kwargs = {
        'dependencies' : userspace,
}

test_template = executable_template + {
        'build_by_default' : want_tests != 'false',
        'install' : install_tests,
        'install_dir' : unittestsdir,
}

test_additional_kwargs = {
        'c_args' : test_cflags,
        'link_depends' : runtest_env,
}

fuzz_template = executable_template + {
        'build_by_default' : fuzzer_build,
        'install' : false,
}

#if 0 /// elogind does not fuzz
# if want_ossfuzz or (want_libfuzzer and fuzzing_engine.found())
#         fuzz_additional_kwargs = {
#                 'dependencies' : fuzzing_engine,
#         }
# elif want_libfuzzer and not fuzzing_engine.found()
#         fuzz_additional_kwargs = {
#                 'link_args' : ['-fsanitize=fuzzer'],
#         }
# else
#         fuzz_additional_kwargs = {
#                 'sources' : files('src/fuzz/fuzz-main.c'),
#         }
# endif
# fuzz_additional_kwargs += {
#         'include_directories' : include_directories('src/fuzz'),
#         'c_args' : test_cflags,
# }
#endif // 0

nss_template = {
        'version' : '2',
        'include_directories' : includes,
        # Note that we link NSS modules with '-z nodelete' so that mempools never get orphaned
        'link_args' : ['-z', 'nodelete'],
        'link_with' : [
                libelogind_static,
                libshared_static,
                libbasic,
        ],
        'dependencies' : [
                librt,
                threads,
        ],
        'install' : true,
        'install_tag' : 'nss',
        'install_dir' : libdir,
}

pam_template = {
        'name_prefix' : '',
        'include_directories' : includes,
        'link_with' : [
                libelogind_static,
                libshared_static,
        ],
        'dependencies' : [
                libpam_misc,
                libpam,
                threads,
        ],
        'install' : true,
        'install_tag' : 'pam',
        'install_dir' : pamlibdir,
}

module_additional_kwargs = {
        'link_args' : ['-shared'],
        'dependencies' : userspace,
}

############################################################

# systemd-analyze requires 'libcore'
subdir('src/core')
#if 0 /// UNNEEDED by elogind
# # systemd-networkd requires 'libsystemd_network'
# subdir('src/libsystemd-network')
#endif // 0

#if 1 /// elogind has a few extras as libraries
subdir('src/sleep')
subdir('src/update-utmp')
#endif // 1

# hwdb requires 'udev_link_with' and 'udev_rpath'
#if 0 /// UNNEEDED by elogind
# subdir('src/udev')
#
# subdir('src/ac-power')
# subdir('src/analyze')
#endif // 0

#if 0 /// elogind does not provide bootctl (for now)
# subdir('src/ask-password')
# subdir('src/backlight')
# subdir('src/battery-check')
# subdir('src/binfmt')
# subdir('src/boot')
# subdir('src/boot/efi')
#endif // 0
subdir('src/busctl')

#if 0 /// UNNEEDED by elogind
# subdir('src/cgls')
#endif // 0
subdir('src/cgroups-agent')
#if 0 /// UNNEEDED by elogind
# subdir('src/cgtop')
# subdir('src/coredump')
# subdir('src/creds')
# subdir('src/cryptenroll')
# subdir('src/cryptsetup')
# subdir('src/debug-generator')
# subdir('src/delta')
# subdir('src/detect-virt')
# subdir('src/dissect')
# subdir('src/environment-d-generator')
# subdir('src/escape')
# subdir('src/firstboot')
# subdir('src/fsck')
# subdir('src/fstab-generator')
# subdir('src/getty-generator')
# subdir('src/gpt-auto-generator')
# subdir('src/hibernate-resume')
# subdir('src/home')
# subdir('src/hostname')
# subdir('src/hwdb')
# subdir('src/id128')
# subdir('src/import')
# subdir('src/initctl')
# subdir('src/integritysetup')
# subdir('src/journal')
# subdir('src/journal-remote')
# subdir('src/kernel-install')
# subdir('src/locale')
#endif // 0

#if 1 /// elogind needs uaccess-command
subdir('src/uaccess-command')
#endif // 1

subdir('src/login')

#if 0 /// UNNEEDED by elogind
# subdir('src/machine')
# subdir('src/machine-id-setup')
# subdir('src/modules-load')
# subdir('src/mount')
# subdir('src/network')
# subdir('src/notify')
# subdir('src/nspawn')
# subdir('src/nss-myhostname')
# subdir('src/nss-mymachines')
# subdir('src/nss-resolve')
# subdir('src/nss-systemd')
# subdir('src/oom')
# subdir('src/partition')
# subdir('src/path')
# subdir('src/pcrextend')
# subdir('src/pcrlock')
# subdir('src/portable')
# subdir('src/pstore')
# subdir('src/quotacheck')
# subdir('src/random-seed')
# subdir('src/rc-local-generator')
# subdir('src/remount-fs')
# subdir('src/reply-password')
# subdir('src/resolve')
# subdir('src/rfkill')
# subdir('src/rpm')
# subdir('src/run')
# subdir('src/run-generator')
# subdir('src/shutdown')
# subdir('src/sleep')
# subdir('src/socket-activate')
# subdir('src/socket-proxy')
# subdir('src/stdio-bridge')
# subdir('src/sulogin-shell')
# subdir('src/sysctl')
# subdir('src/sysext')
# subdir('src/system-update-generator')
# subdir('src/systemctl')
# subdir('src/sysupdate')
# subdir('src/sysusers')
# subdir('src/sysv-generator')
# subdir('src/storagetm')
# subdir('src/timedate')
# subdir('src/timesync')
# subdir('src/tmpfiles')
# subdir('src/tpm2-setup')
# subdir('src/tty-ask-password-agent')
# subdir('src/update-done')
# subdir('src/update-utmp')
# subdir('src/user-sessions')
# subdir('src/userdb')
# subdir('src/varlinkctl')
# subdir('src/vconsole')
# subdir('src/veritysetup')
# subdir('src/vmspawn')
# subdir('src/volatile-root')
# subdir('src/xdg-autostart-generator')
#endif // 0

subdir('src/systemd')

subdir('src/test')

#if 0 /// UNNEEDED by elogind
# subdir('src/fuzz')
# subdir('src/ukify/test')  # needs to be last for test_env variable
# subdir('test/fuzz')
#
# alias_target('devel', libsystemd_pc, libudev_pc, systemd_pc, udev_pc)
#else // 0
alias_target('devel', libelogind_pc)
#endif // 0

############################################################

foreach test : simple_tests
        executables += test_template + { 'sources' : [test] }
endforeach

foreach test : libelogind_tests
        executables += test_template + test
endforeach

#if 0 /// elogind does not fuzz
# foreach fuzzer : simple_fuzzers
#         executables += fuzz_template + { 'sources' : [fuzzer] }
# endforeach
#endif // 0

foreach dict : executables
        name = dict.get('name', '')
        if name == ''
                name = fs.stem(dict.get('sources')[0])
                assert(name.split('-')[0] in ['test', 'fuzz'])
        endif

        is_test = name.startswith('test-')
        is_fuzz = name.startswith('fuzz-')

        build = true
        foreach cond : dict.get('conditions', [])
                if conf.get(cond) != 1
                        build = false
                        break
                endif
        endforeach
        if not build
                continue
        endif

        kwargs = {}
        foreach key, val : dict
                if key in ['name', 'dbus', 'public', 'conditions',
                           'type', 'suite', 'timeout', 'parallel']
                        continue
                endif

                kwargs += { key : val }
        endforeach

        foreach key, val : executable_additional_kwargs
                kwargs += { key : [ kwargs.get(key, []), val ]}
        endforeach

        if is_test
                kwargs += { 'install_dir' : kwargs.get('install_dir') / dict.get('type', '') }
                foreach key, val : test_additional_kwargs
                        kwargs += { key : [ kwargs.get(key, []), val ] }
                endforeach
        endif

        if is_fuzz
                foreach key, val : fuzz_additional_kwargs
                        kwargs += { key : [ kwargs.get(key, []), val ] }
                endforeach
        endif

        exe = executable(
                name,
                kwargs : kwargs,
        )

        executables_by_name += { name : exe }

        if dict.get('build_by_default', true)
                if dict.get('dbus', false)
                        dbus_programs += exe
                endif
                if dict.get('public', false)
                        public_programs += exe
                endif
        endif

        if is_test
                type = dict.get('type', '')
                suite = dict.get('suite', '')
                if suite == ''
                        suite = fs.name(fs.parent(dict.get('sources')[0]))
                        if suite.startswith('sd-')
                                suite = 'libelogind'
                        endif
                endif

                if type == 'manual'
                        message('@0@/@1@ is a manual test'.format(suite, name))
                elif type == 'unsafe' and want_tests != 'unsafe'
                        message('@0@/@1@ is an unsafe test'.format(suite, name))
                elif dict.get('build_by_default')
                        test(name, exe,
                             env : test_env,
                             timeout : dict.get('timeout', 30),
                             suite : suite,
                             is_parallel : dict.get('parallel', true))
                endif
        endif

#if 0 /// elogind does not fuzz
#         if is_fuzz
#                 fuzzer_exes += exe
#
#                 if want_tests != 'false'
#                         # Run the fuzz regression tests without any sanitizers enabled.
#                         # Additional invocations with sanitizers may get added below.
#                         fuzz_ins = fuzz_regression_tests.get(name, {})
#                         foreach directive : fuzz_ins.get('directives', [])
#                                 tt = '@0@_@1@'.format(name, fs.name(directive.full_path()))
#                                 if tt.substring(45) != ''
#                                         error('Directive sample name is too long:', directive.full_path())
#                                 endif
#
#                                 test(tt,
#                                      exe,
#                                      suite : 'fuzz',
#                                      args : directive.full_path(),
#                                      depends : directive)
#                         endforeach
#                         foreach file : fuzz_ins.get('files', [])
#                                 tt = '@0@_@1@'.format(name, fs.name(file))
#                                 if tt.substring(45) != ''
#                                         error('Fuzz sample name is too long:', fs.name(file))
#                                 endif
#
#                                 test(tt,
#                                      exe,
#                                      suite : 'fuzz',
#                                      args : file)
#                         endforeach
#                 endif
#         endif
#endif // 0
endforeach

#if 0 /// elogind does not fuzz
# alias_target('fuzzers', fuzzer_exes)
#endif // 0

############################################################

test_dlopen = executables_by_name.get('test-dlopen')

foreach dict : modules
        name = dict.get('name')
        is_nss = name.startswith('nss_')
        is_pam = name.startswith('pam_')

        build = true
        foreach cond : dict.get('conditions', [])
                if conf.get(cond) != 1
                        build = false
                        break
                endif
        endforeach
        if not build
                continue
        endif

        kwargs = {}
        foreach key, val : dict
                if key in ['name', 'conditions', 'version-script']
                        continue
                endif
                kwargs += { key : val }
        endforeach

        kwargs += {
                'link_args' : [
                        kwargs.get('link_args', []),
                        '-Wl,--version-script=' + dict.get('version-script'),
                ],
                'link_depends' : [
                        kwargs.get('link_depends', []),
                        dict.get('version-script'),
                ],
        }
        foreach key, val : module_additional_kwargs
                kwargs += { key : [ kwargs.get(key, []), val ]}
        endforeach

        lib = shared_library(
                name,
                kwargs : kwargs,
        )

        if is_nss
                # We cannot use shared_module because it does not support version suffix.
                # Unfortunately shared_library insists on creating the symlink…
                meson.add_install_script(sh, '-c', 'rm $DESTDIR@0@/lib@1@.so'.format(libdir, name),
                                         install_tag : 'nss')
        endif

        if want_tests != 'false' and (is_nss or is_pam)
                test('dlopen-' + name,
                     test_dlopen,
                     # path to dlopen must include a slash
                     args : lib.full_path(),
                     depends : lib,
                     suite : is_nss ? 'nss' : 'pam')
        endif
endforeach

############################################################

#if 0 /// UNNEEDED by elogind
# ukify = custom_target(
#         'ukify',
#         input : 'src/ukify/ukify.py',
#         output : 'ukify',
#         command : [jinja2_cmdline, '@INPUT@', '@OUTPUT@'],
#         install : want_ukify,
#         install_mode : 'rwxr-xr-x',
#         install_dir : bindir)
# if want_ukify
#         public_programs += ukify
#
#         # symlink for backwards compatibility after rename
#         meson.add_install_script(sh, '-c',
#                                  ln_s.format(bindir / 'ukify',
#                                              libexecdir / 'ukify'))
# endif
#endif // 0

############################################################

subdir('rules.d')
#if 0 /// elogind does not need anything in the upstream top test directory
# subdir('test')
#endif // 0

#if 0 /// UNNEEDED by elogind
# ############################################################
#
# subdir('docs/sysvinit')
# subdir('docs/var-log')
# subdir('hwdb.d')
#endif // 0
subdir('man')
#if 0 /// UNNEEDED by elogind
# subdir('modprobe.d')
# subdir('network')
# subdir('presets')
#endif // 0
subdir('shell-completion/bash')
subdir('shell-completion/zsh')
#if 0 /// UNNEEDED by elogind
# subdir('sysctl.d')
# subdir('sysusers.d')
# subdir('tmpfiles.d')
# subdir('units')
#endif // 0
#if 0 /// UNNEEDED by elogind
#
# install_subdir('factory/etc',
#                install_dir : factorydir)
# subdir('factory/templates')
#
# if install_sysconfdir
#         install_data('xorg/50-systemd-user.sh',
#                      install_dir : xinitrcdir)
# endif
#endif // 0
install_data('LICENSE.GPL2',
             'LICENSE.LGPL2.1',
#if 0 /// elogind has upgraded to markdown, and the NEWS file is useless
#              'NEWS',
#              'README',
#else // 0
             'README.md',
#endif // 0
             'docs/CODING_STYLE.md',
#if 0 /// irrelevant for elogind
#              'docs/DISTRO_PORTING.md',
#              'docs/ENVIRONMENT.md',
#              'docs/HACKING.md',
#              'docs/TRANSIENT-SETTINGS.md',
#              'docs/TRANSLATORS.md',
#              'docs/UIDS-GIDS.md',
#endif // 0
             install_dir : docdir)

#if 0 /// irrelevant for elogind
# install_subdir('LICENSES',
#                install_dir : docdir)
#
#endif // 0
install_emptydir(elogindstatedir)

############################################################

# Ensure that changes to the docs/ directory do not break the
# basic Github pages build. But only run it in developer mode,
# as it might be fragile due to changes in the tooling, and it is
# not generally useful for users.
jekyll = find_program('jekyll', required : false)
if get_option('mode') == 'developer' and want_tests != 'false' and jekyll.found()
        test('github-pages',
             jekyll,
             suite : 'dist',
             args : ['build',
                     '--source', project_source_root / 'docs',
                     '--destination', project_build_root / '_site'])
endif

############################################################

check_help = find_program('tools/check-help.sh')
check_version = find_program('tools/check-version.sh')

foreach exec : public_programs
        name = fs.name(exec.full_path())
        if want_tests != 'false'
                test('check-help-' + name,
                     check_help,
                     suite : 'dist',
                     args : exec.full_path(),
                     depends: exec)

                test('check-version-' + name,
                     check_version,
                     suite : 'dist',
                     args : [exec.full_path(),
                             meson.project_version()],
                     depends: exec)
        endif
endforeach


#if 0 /// fuzz regression tests are not supported by elogind
# # Enable tests for all supported sanitizers
# foreach tuple : fuzz_sanitizers
#         sanitizer = tuple[0]
#         build = tuple[1]
#
#         if cc.has_link_argument('-fsanitize=@0@'.format(sanitizer))
#                 foreach fuzzer, fuzz_ins : fuzz_regression_tests
#                         name = '@0@:@1@'.format(fuzzer, sanitizer)
#                         if want_tests == 'false'
#                                 message('Not compiling @0@ because tests is set to false'.format(name))
#                                 continue
#                         endif
#                         if not fuzz_tests
#                                 message('Not compiling @0@ because fuzz-tests is set to false'.format(name))
#                                 continue
#                         endif
#                         exe = custom_target(
#                                 name,
#                                 output : name,
#                                 depends : build,
#                                 command : [ln, '-fs',
#                                            build.full_path() / fuzzer,
#                                            '@OUTPUT@'],
#                                 build_by_default : true)
#
#                         foreach directive : fuzz_ins.get('directives', [])
#                                 test('@0@_@1@_@2@'.format(fuzzer, fs.name(directive.full_path()), sanitizer),
#                                      env,
#                                      suite : 'fuzz+san',
#                                      env : ['UBSAN_OPTIONS=print_stacktrace=1:print_summary=1:halt_on_error=1'],
#                                      timeout : 60,
#                                      args : [exe.full_path(), directive.full_path()],
#                                      depends : directive)
#                         endforeach
#                         foreach file : fuzz_ins.get('files', [])
#                                 test('@0@_@1@_@2@'.format(fuzzer, fs.name(file), sanitizer),
#                                      env,
#                                      suite : 'fuzz+san',
#                                      env : ['UBSAN_OPTIONS=print_stacktrace=1:print_summary=1:halt_on_error=1'],
#                                      timeout : 60,
#                                      args : [exe.full_path(), file])
#                         endforeach
#                 endforeach
#         endif
# endforeach
#endif // 0

############################################################

if git.found()
        all_files = run_command(
                env, '-u', 'GIT_WORK_TREE',
                git, '--git-dir=@0@/.git'.format(project_source_root),
                     'ls-files', ':/*.[ch]', ':/*.cc',
                check : false)
        if all_files.returncode() == 0
                all_files = files(all_files.stdout().split())

                custom_target(
                        'tags',
                        output : 'tags',
                        command : [env, 'etags', '-o', '@0@/TAGS'.format(project_source_root)] + all_files)
                run_target(
                        'ctags',
                        command : [env, 'ctags', '--tag-relative=never', '-o', '@0@/tags'.format(project_source_root)] + all_files)

                ############################################

                if want_tests != 'false' and conf.get('BUILD_MODE_DEVELOPER') == 1
                        test('check-includes',
                             files('tools/check-includes.py'),
                             args: all_files,
                             env : ['PROJECT_SOURCE_ROOT=@0@'.format(project_source_root)],
                             suite : 'headers')
                endif
        endif

#if 0 /// UNNEEDED by elogind
#         ####################################################
#
#         git_contrib_sh = find_program('tools/git-contrib.sh')
#         run_target(
#                 'git-contrib',
#                 command : [git_contrib_sh])
#endif // 0

        ####################################################

        git_head = run_command(
                git, '--git-dir=@0@/.git'.format(project_source_root),
                     'rev-parse', 'HEAD',
                check : false).stdout().strip()
        git_head_short = run_command(
                git, '--git-dir=@0@/.git'.format(project_source_root),
                     'rev-parse', '--short=7', 'HEAD',
                check : false).stdout().strip()

        run_target(
                'git-snapshot',
                command : [git, 'archive',
                           '-o', '@0@/elogind-@1@.tar.gz'.format(project_source_root,
                                                                 git_head_short),
                           '--prefix', 'systemd-@0@/'.format(git_head),
                           'HEAD'])
endif

############################################################

check_api_docs_sh = find_program('tools/check-api-docs.sh')
run_target(
        'check-api-docs',
#if 0 /// libudev is external, elogind does not need to document it.
#         depends : [man, libsystemd, libudev],
#         command : [check_api_docs_sh, libsystemd.full_path(), libudev.full_path()])
#
#else // 0
        depends : [man, libelogind],
        command : [check_api_docs_sh, libelogind.full_path()])
#endif // 0
alias_target('update-dbus-docs', update_dbus_docs)
alias_target('update-man-rules', update_man_rules)

#if 0 /// elogind is not (and never will be) PID 1
# if not meson.is_cross_build()
#         custom_target(
#                 'export-dbus-interfaces',
#                 output : fs.name(dbus_interfaces_dir),
#                 install : dbus_interfaces_dir != 'no',
#                 install_dir : fs.parent(dbus_interfaces_dir),
#                 command : [export_dbus_interfaces_py, '@OUTPUT@', dbus_programs])
# endif
#
# ############################################################
#
# alt_time_epoch = run_command('date', '-Is', '-u', '-d', '@@0@'.format(time_epoch),
#                              check : true).stdout().strip()
#endif // 0

summary({
        'split bin-sbin' :                  split_bin,
        'prefix directory' :                prefixdir,
        'sysconf directory' :               sysconfdir,
        'include directory' :               includedir,
        'lib directory' :                   libdir,
#if 1 /// Needed by elogind
        'libexec dir' :                     libexecdir,
#endif // 1
#if 0 /// UNNEEDED by elogind
#         'SysV init scripts' :               sysvinit_path,
#         'SysV rc?.d directories' :          sysvrcnd_path,
#         'PAM modules directory' :           pamlibdir,
#         'PAM configuration directory' :     pamconfdir,
#         'libcryptsetup plugins directory' : libcryptsetup_plugins_dir,
#         'RPM macros directory' :            rpmmacrosdir,
#         'modprobe.d directory' :            modprobedir,
#endif // 0
        'D-Bus policy directory' :          dbuspolicydir,
#if 0 /// UNNEEDED by elogind
#         'D-Bus session directory' :         dbussessionservicedir,
#endif // 0
        'D-Bus system directory' :          dbussystemservicedir,
#if 0 /// UNNEEDED by elogind
#         'D-Bus interfaces directory' :      dbus_interfaces_dir,
#endif // 0
#if 1 /// Let elogind show where docs are installed
        'mandir' :                          get_option('mandir'),
        'docdir' :                          docdir,
        'htmldir' :                         htmldir,
#endif // 1
        'bash completions directory' :      bashcompletiondir,
        'zsh completions directory' :       zshcompletiondir,
#if 0 /// UNNEEDED by elogind
#         'private shared lib version tag' :  shared_lib_tag,
#         'extra start script' :              get_option('rc-local'),
#         'debug shell' :                     '@0@ @ @1@'.format(get_option('debug-shell'),
#                                                                get_option('debug-tty')),
#endif // 0
        'system UIDs' :                     '<=@0@ (alloc >=@1@)'.format(conf.get('SYSTEM_UID_MAX'),
                                                                         conf.get('SYSTEM_ALLOC_UID_MIN')),
        'system GIDs' :                     '<=@0@ (alloc >=@1@)'.format(conf.get('SYSTEM_GID_MAX'),
                                                                         conf.get('SYSTEM_ALLOC_GID_MIN')),
#if 0 /// UNNEEDED by elogind
#         'dynamic UIDs' :                    '@0@…@1@'.format(dynamic_uid_min, dynamic_uid_max),
#         'container UID bases' :             '@0@…@1@'.format(container_uid_base_min, container_uid_base_max),
#         'static UID/GID allocations' :      ' '.join(static_ugids),
#endif // 0
        '/dev/kvm access mode' :            get_option('dev-kvm-mode'),
        'render group access mode' :        get_option('group-render-mode'),
#if 0 /// UNNEEDED by elogind
#         'certificate root directory' :      get_option('certificate-root'),
#endif // 0
        'support URL' :                     support_url,
        'nobody user name' :                nobody_user,
        'nobody group name' :               nobody_group,
        'fallback hostname' :               get_option('fallback-hostname'),
#if 0 /// UNNEEDED by elogind
#         'default compression method' :      compression,
#         'default DNSSEC mode' :             default_dnssec,
#         'default DNS-over-TLS mode' :       default_dns_over_tls,
#         'default mDNS mode' :               default_mdns,
#         'default LLMNR mode' :              default_llmnr,
#         'default DNS servers' :             dns_servers.split(' '),
#         'default NTP servers' :             ntp_servers.split(' '),
#endif // 0
        'default cgroup hierarchy' :        default_hierarchy,
#if 0 /// UNNEEDED by elogind
#         'default net.naming-scheme value' : default_net_naming_scheme,
#endif // 0
        'default KillUserProcesses value' : kill_user_processes,
#if 0 /// UNNEEDED by elogind
#         'default locale' :                  default_locale,
#         'default nspawn locale' :           nspawn_locale,
#         'default status unit format' :      status_unit_format_default,
#endif // 0
        'default user $PATH' :
                default_user_path != '' ? default_user_path : '(same as system services)',
#if 0 /// UNNEEDED by elogind
#         'systemd service watchdog' :        service_watchdog == '' ? 'disabled' : service_watchdog,
#         'time epoch' :                      '@0@ (@1@)'.format(time_epoch, alt_time_epoch)})
#else // 0
})
#endif // 0

# TODO:
# CFLAGS:   ${OUR_CFLAGS} ${CFLAGS}
# CPPFLAGS: ${OUR_CPPFLAGS} ${CPPFLAGS}
# LDFLAGS:  ${OUR_LDFLAGS} ${LDFLAGS}

found = []
missing = []

foreach tuple : [
        # dependencies
        ['ACL'],
        ['AUDIT'],
#if 0 /// UNNEEDED by elogind
#         ['AppArmor'],
#         ['IMA'],
#         ['PAM'],
#         ['SECCOMP'],
#endif // 0
        ['SELinux'],
        ['SMACK'],
#if 0 /// UNNEEDED by elogind
#         ['blkid'],
#         ['elfutils'],
#         ['gcrypt'],
#         ['gnutls'],
#         ['libbpf'],
#         ['libcryptsetup'],
#         ['libcryptsetup-plugins'],
#         ['libcurl'],
#         ['libfdisk'],
#         ['libfido2'],
#         ['libidn'],
#         ['libidn2'],
#         ['libiptc'],
#         ['microhttpd'],
#         ['openssl'],
#         ['p11kit'],
#         ['passwdqc'],
#         ['pcre2'],
#         ['pwquality'],
#         ['qrencode'],
#         ['tpm2'],
#         ['xkbcommon'],
#
#         # compression libs
#         ['zstd'],
#         ['lz4'],
#         ['xz'],
#         ['zlib'],
#         ['bzip2'],
#
#         # components
#         ['backlight'],
#         ['binfmt'],
#         ['bootloader'],
#         ['bpf-framework',          conf.get('BPF_FRAMEWORK') == 1],
#         ['coredump'],
#endif // 0
        ['efi'],
#if 0 /// UNNEEDED by elogind
#         ['environment.d'],
#         ['firstboot'],
#         ['hibernate'],
#         ['homed'],
#         ['hostnamed'],
#         ['hwdb'],
#         ['importd'],
#         ['initrd'],
#         ['kernel-install'],
#         ['localed'],
#         ['logind'],
#         ['machined'],
#         ['networkd'],
#         ['nss-myhostname'],
#         ['nss-mymachines'],
#         ['nss-resolve'],
#         ['nss-systemd'],
#         ['oomd'],
#         ['portabled'],
#         ['pstore'],
#         ['quotacheck'],
#         ['randomseed'],
#         ['repart'],
#         ['resolve'],
#         ['rfkill'],
#         ['sysext'],
#         ['systemd-analyze',        conf.get('ENABLE_ANALYZE') == 1],
#         ['sysupdate'],
#         ['sysusers'],
#         ['storagetm'],
#         ['timedated'],
#         ['timesyncd'],
#         ['tmpfiles'],
#         ['userdb'],
#         ['vconsole'],
#         ['vmspawn'],
#         ['xdg-autostart'],
#
#         # optional features
#         ['dmi'],
#         ['idn'],
#endif // 0
        ['polkit'],
#if 0 /// UNNEEDED by elogind
#         ['nscd'],
#         ['legacy-pkla',            install_polkit_pkla],
#         ['kmod'],
#endif // 0
        ['xenctrl'],
        ['dbus'],
        ['glib'],
#if 0 /// UNNEEDED by elogind
#         ['tpm'],
#endif // 0
#if 0 /// UNNEEDED by elogind
#         ['man pages',              want_man],
#         ['html pages',             want_html],
#         ['man page indices',       want_man and have_lxml],
#         ['SysV compat'],
#         ['compat-mutable-uid-boundaries'],
#endif // 0
        ['utmp'],
#if 0 /// UNNEEDED by elogind
#         ['ldconfig'],
#endif // 0
#if 0 /// UNNEEDED by elogind
#         ['adm group',              get_option('adm-group')],
#         ['wheel group',            get_option('wheel-group')],
#         ['gshadow'],
#endif // 0
#if 1 /// Extra debugging for elogind
        ['debug elogind'],
#endif // 1
        ['debug hashmap'],
        ['debug mmap cache'],
        ['debug siphash'],
        ['trace logging',          conf.get('LOG_TRACE') == 1],
        ['slow tests',             slow_tests],
#if 0 /// elogind does not utilize fuzzing
#         ['fuzz tests',             fuzz_tests],
#endif // 0
        ['install tests',          install_tests],
#if 0 /// elogind does not ship any of those
#         ['link-udev-shared',       get_option('link-udev-shared')],
#         ['link-systemctl-shared',  get_option('link-systemctl-shared')],
#         ['link-networkd-shared',   get_option('link-networkd-shared')],
#         ['link-timesyncd-shared',  get_option('link-timesyncd-shared')],
#         ['link-journalctl-shared', get_option('link-journalctl-shared')],
#         ['link-boot-shared',       get_option('link-boot-shared')],
#         ['link-portabled-shared',  get_option('link-portabled-shared')],
#         ['first-boot-full-preset'],
#         ['fexecve'],
#         ['standalone-binaries',    get_option('standalone-binaries')],
#endif // 0
        ['coverage',               get_option('b_coverage')],
]

        if tuple.length() >= 2
                cond = tuple[1]
        else
                ident1 = 'HAVE_' + tuple[0].underscorify().to_upper()
                ident2 = 'ENABLE_' + tuple[0].underscorify().to_upper()
                cond = conf.get(ident1, 0) == 1 or conf.get(ident2, 0) == 1
        endif
        if cond
                found += tuple[0]
        else
                missing += tuple[0]
        endif
endforeach

if static_libelogind == 'false'
        missing += 'static-libelogind'
else
        found += 'static-libelogind(@0@)'.format(static_libelogind)
endif

#if 0 /// UNNEEDED by elogind
# if static_libudev == 'false'
#         missing += 'static-libudev'
# else
#         found += 'static-libudev(@0@)'.format(static_libudev)
# endif
#
# if conf.get('HAVE_OPENSSL_OR_GCRYPT') == 1 and conf.get('PREFER_OPENSSL') == 1
#         found += 'cryptolib(openssl)'
# elif conf.get('HAVE_OPENSSL_OR_GCRYPT') == 1
#         found += 'cryptolib(gcrypt)'
# else
#         missing += 'cryptolib'
# endif
#
# if conf.get('DNS_OVER_TLS_USE_GNUTLS') == 1
#         found += 'DNS-over-TLS(gnutls)'
# elif conf.get('DNS_OVER_TLS_USE_OPENSSL') == 1
#         found += 'DNS-over-TLS(openssl)'
# else
#         missing += 'DNS-over-TLS'
# endif
#endif // 0

summary({
        'enabled' :  ', '.join(found),
        'disabled' : ', '.join(missing)},
        section : 'Features')
