meson.build

   1 # SPDX-License-Identifier: LGPL-2.1-or-later
   2
   3 project('lxcfs', 'c',
   4         version : '4.0.0',
   5         license : 'LGPLv2+',
   6         default_options: [
   7                 'b_colorout=always',
   8                 'b_asneeded=true',
   9                 'b_pie=true',
  10                 'c_std=gnu11',
  11                 'warning_level=2',
  12         ],
  13         meson_version : '>= 0.45',
  14        )
  15
  16 conf = configuration_data()
  17 conf.set_quoted('PROJECT_URL', 'https://linuxcontainers.org/lxcfs/introduction/')
  18 conf.set('PROJECT_VERSION',    meson.project_version(),
  19          description : 'Numerical project version (used where a simple number is expected)')
  20 project_source_root = meson.current_source_dir()
  21 project_build_root = meson.current_build_dir()
  22
  23 # join_paths ignores the preceding arguments if an absolute component is
  24 # encountered, so this should canonicalize various paths when they are
  25 # absolute or relative.
  26 prefixdir = get_option('prefix')
  27 if not prefixdir.startswith('/')
  28         error('Prefix is not absolute: "@0@"'.format(prefixdir))
  29 endif
  30 bindir = join_paths(prefixdir, get_option('bindir'))
  31 libdir = join_paths(prefixdir, get_option('libdir'))
  32 lxcfsdir = join_paths(libdir, 'lxcfs')
  33 sysconfdir = join_paths(prefixdir, get_option('sysconfdir'))
  34 runtimepath = join_paths(prefixdir, get_option('runtime-path'))
  35 localstatedir = join_paths('/', get_option('localstatedir'))
  36 datadir = join_paths(prefixdir, get_option('datadir'))
  37
  38 conf.set_quoted('BINDIR',               bindir)
  39 conf.set_quoted('LIBDIR',               libdir)
  40 conf.set_quoted('LOCALSTATEDIR',        localstatedir)
  41 conf.set_quoted('RUNTIME_PATH',         runtimepath)
  42 conf.set_quoted('SYSCONFDIR',           sysconfdir)
  43
  44 conf.set_quoted('LXCFS_BUILD_ROOT',     project_build_root)
  45 conf.set_quoted('LXCFS_SOURCE_ROOT',    project_source_root)
  46
  47 lxcfssharedir = join_paths(datadir, 'lxcfs')
  48 conf.set_quoted('LXCFSSHAREDIR',        lxcfssharedir)
  49
  50 lxcconfdir = join_paths(datadir, 'lxc/config/common.conf.d')
  51 conf.set_quoted('LXCCONFDIR',           lxcconfdir)
  52
  53 init_script = get_option('init-script')
  54
  55 cc = meson.get_compiler('c')
  56 meson_build_sh = find_program('tools/meson-build.sh')
  57
  58 want_tests = get_option('tests')
  59
  60 possible_cc_flags = [
  61         '-Wvla',
  62         '-Wimplicit-fallthrough=5',
  63         '-Wcast-align',
  64         '-Wstrict-prototypes',
  65         '-fno-strict-aliasing',
  66         '-fstack-clash-protection',
  67         '-fstack-protector-strong',
  68         '--param=ssp-buffer-size=4',
  69         '--mcet -fcf-protection',
  70         '-Werror=implicit-function-declaration',
  71         '-Wlogical-op',
  72         '-Wmissing-include-dirs',
  73         '-Wold-style-definition',
  74         '-Winit-self',
  75         '-Wunused-but-set-variable',
  76         '-Wno-unused-parameter',
  77         '-Wfloat-equal',
  78         '-Wsuggest-attribute=noreturn',
  79         '-Werror=return-type',
  80         '-Werror=incompatible-pointer-types',
  81         '-Wformat=2',
  82         '-Wshadow',
  83         '-Wendif-labels',
  84         '-Werror=overflow',
  85         '-fdiagnostics-show-option',
  86         '-Werror=shift-count-overflow',
  87         '-Werror=shift-overflow=2',
  88         '-Wdate-time',
  89         '-Wnested-externs',
  90         '-fasynchronous-unwind-tables',
  91         '-fexceptions',
  92         '-Warray-bounds',
  93         '-Wrestrict',
  94         '-Wreturn-local-addr',
  95         '-fsanitize=cfi',
  96         '-Wstringop-overflow',
  97 ]
  98
  99 possible_link_flags = [
 100         '-Wl,--gc-sections',
 101         '-Wl,-z,relro',
 102         '-Wl,-z,now',
 103         '-Wl,-fuse-ld=gold',
 104 ]
 105
 106 if meson.version().version_compare('>=0.46')
 107         add_project_link_arguments(cc.get_supported_link_arguments(possible_link_flags), language : 'c')
 108 else
 109         add_project_link_arguments(possible_link_flags, language : 'c')
 110 endif
 111
 112 add_project_arguments(cc.get_supported_arguments(possible_cc_flags), language : 'c')
 113
 114 foreach ident : [
 115         ['strlcpy',             '''#include <string.h>'''],
 116         ['strlcat',             '''#include <string.h>'''],
 117         ['pidfd_send_signal',   '''#include <stdlib.h>
 118                                  #include <unistd.h>
 119                                  #include <signal.h>
 120                                  #include <sys/wait.h>'''],
 121         ['pidfd_open',          '''#include <stdlib.h>
 122                                  #include <unistd.h>
 123                                  #include <signal.h>
 124                                  #include <sys/wait.h>'''],
 125 ]
 126
 127         have = cc.has_function(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE')
 128         conf.set10('HAVE_' + ident[0].to_upper(), have)
 129 endforeach
 130
 131 conf.set('_FILE_OFFSET_BITS', 64)
 132
 133 libfuse = dependency('fuse3', required : false)
 134 if libfuse.found()
 135         conf.set10('HAVE_FUSE3', true)
 136         conf.set('FUSE_USE_VERSION', 30)
 137 else
 138         if dependency('fuse').found()
 139                 conf.set10('HAVE_FUSE', true)
 140                 conf.set('FUSE_USE_VERSION', 26)
 141         endif
 142 endif
 143
 144 libdl = cc.find_library('dl')
 145 threads = dependency('threads')
 146
 147 config_h = configure_file(
 148         output : 'config.h',
 149         configuration : conf)
 150 config_include = include_directories('.')
 151
 152 add_project_arguments('-include', 'config.h', language : 'c')
 153
 154 subdir('tests')
 155
 156 public_programs = []
 157
 158 lxcfs_sources = files('src/lxcfs.c')
 159
 160 public_programs += executable(
 161         'lxcfs',
 162         lxcfs_sources,
 163         dependencies : [threads,
 164                         libdl,
 165                         libfuse],
 166         install : true,
 167         install_dir : bindir)
 168
 169 liblxcfs_sources = files(
 170         'src/api_extensions.h',
 171         'src/bindings.c',
 172         'src/bindings.h',
 173         'src/cgroups/cgfsng.c',
 174         'src/cgroups/cgroup.c',
 175         'src/cgroups/cgroup.h',
 176         'src/cgroups/cgroup2_devices.c',
 177         'src/cgroups/cgroup2_devices.h',
 178         'src/cgroups/cgroup_utils.c',
 179         'src/cgroups/cgroup_utils.h',
 180         'src/cgroup_fuse.c',
 181         'src/cgroup_fuse.h',
 182         'src/cpuset_parse.c',
 183         'src/cpuset_parse.h',
 184         'src/lxcfs.c',
 185         'src/lxcfs_fuse_compat.h',
 186         'src/macro.h',
 187         'src/memory_utils.h',
 188         'src/proc_cpuview.c',
 189         'src/proc_cpuview.h',
 190         'src/proc_fuse.c',
 191         'src/proc_fuse.h',
 192         'src/proc_loadavg.c',
 193         'src/proc_loadavg.h',
 194         'src/syscall_numbers.h',
 195         'src/sysfs_fuse.c',
 196         'src/sysfs_fuse.h',
 197         'src/utils.c',
 198         'src/utils.h')
 199
 200 liblxcfs = shared_library(
 201         'lxcfs',
 202         liblxcfs_sources,
 203         link_args : ['-shared'],
 204         dependencies : [threads,
 205                         libdl,
 206                         libfuse],
 207         install : true,
 208         install_dir : lxcfsdir)
 209
 210 if want_tests == true
 211         liblxcfs_test = shared_library(
 212                 'lxcfstest',
 213                 liblxcfs_sources,
 214                 link_args : ['-shared'],
 215                 dependencies : [threads,
 216                                 libdl,
 217                                 libfuse],
 218                 install : false,
 219                 install_dir : lxcfsdir,
 220                 c_args : '-DRELOADTEST -DDEBUG')
 221 endif
 222
 223 if init_script == 'systemd'
 224         systemd_service_data = configuration_data()
 225         systemd_service_data.set_quoted('LXCFSTARGETDIR', join_paths(localstatedir, 'lib/lxcfs'))
 226         systemd_service = configure_file(
 227                                 configuration : systemd_service_data,
 228                                 input : 'config/init/systemd/lxcfs.service.in',
 229                                 output : 'lxcfs.service')
 230         install_data(join_paths(project_build_root, 'lxcfs.service'), install_dir : '/lib/systemd/system')
 231 elif init_script == 'upstart'
 232         install_data('config/init/upstart/lxcfs.conf', install_dir : join_paths(sysconfdir, 'init'))
 233 elif init_script == 'openrc'
 234         install_data('config/init/sysvinit/lxcfs', install_dir : join_paths(sysconfdir, 'rc.d/init.d/lxcfs'))
 235 elif init_script == 'sysvinit'
 236         install_data('config/init/sysvinit/lxcfs', install_dir : join_paths(sysconfdir, 'rc.d/init.d/lxcfs'))
 237 endif
 238
 239 status = [
 240         '@0@ @1@'.format(meson.project_name(), meson.project_version()),
 241
 242         'FUSE version:                  @0@'.format(libfuse.version()),
 243         'bin directory:                 @0@'.format(bindir),
 244         'lib directory:                 @0@'.format(libdir),
 245         'data directory:                @0@'.format(datadir),
 246         'local state directory:         @0@'.format(localstatedir),
 247         'prefix directory:              @0@'.format(prefixdir),
 248         'runtime directory:             @0@'.format(runtimepath),
 249         'sysconf directory:             @0@'.format(sysconfdir),
 250         'lxc conf directory:            @0@'.format(lxcconfdir),
 251         'lxcfs directory:               @0@'.format(lxcfsdir),
 252         'lxcfs shared directory:        @0@'.format(lxcfssharedir),
 253         'lxcfs build root directory:    @0@'.format(project_build_root),
 254         'lxcfs source root directory:   @0@'.format(project_source_root),
 255         'init system:                   @0@'.format(init_script),
 256         'tests:                         @0@'.format(want_tests)]
 257
 258 message('\n         '.join(status))