meson.build

   1 # SPDX-License-Identifier: LGPL-2.1-or-later
   2
   3 # Project.
   4 project(
   5     'lxcfs',
   6     'c',
   7     version: '5.0.0',
   8     license: 'LGPLv2+',
   9     default_options: [
  10         'b_colorout=always',
  11         'b_asneeded=true',
  12         'b_pie=true',
  13         'c_std=gnu11',
  14         'warning_level=2',
  15     ],
  16     meson_version: '>= 0.50')
  17
  18 cc = meson.get_compiler('c')
  19
  20 # Templater.
  21 if run_command(
  22     'python3', '-c', 'import jinja2',
  23     check: false).returncode() != 0
  24         error('python3 jinja2 missing')
  25 endif
  26
  27 meson_build_sh = find_program('tools/meson-build.sh')
  28 meson_render_jinja2 = find_program('tools/meson-render-jinja2.py')
  29
  30 # Configuration options.
  31 conf = configuration_data()
  32 conf.set_quoted('PROJECT', meson.project_name())
  33 conf.set_quoted('PROJECT_URL', 'https://linuxcontainers.org/lxcfs/')
  34 conf.set_quoted('PROJECT_VERSION', meson.project_version())
  35 conf.set_quoted('PACKAGE_VERSION', meson.project_version())
  36 conf.set('_GNU_SOURCE', true)
  37 conf.set('_FILE_OFFSET_BITS', 64)
  38 conf.set('__STDC_FORMAT_MACROS', true)
  39
  40 project_source_root = meson.current_source_dir()
  41 project_build_root = meson.current_build_dir()
  42
  43 # Path handling.
  44 prefixdir = get_option('prefix')
  45 bindir = join_paths(prefixdir, get_option('bindir'))
  46 libdir = join_paths(prefixdir, get_option('libdir'))
  47 lxcfsdir = join_paths(libdir, 'lxcfs')
  48 sysconfdir = join_paths(prefixdir, get_option('sysconfdir'))
  49 runtimepath = join_paths(prefixdir, get_option('runtime-path'))
  50 localstatedir = join_paths('/', get_option('localstatedir'))
  51 datadir = join_paths(prefixdir, get_option('datadir'))
  52
  53 lxcfssharedir = join_paths(datadir, 'lxcfs')
  54 lxcconfdir = join_paths(datadir, 'lxc/config/common.conf.d')
  55
  56 conf.set_quoted('BINDIR', bindir)
  57 conf.set_quoted('LIBDIR', libdir)
  58 conf.set_quoted('LOCALSTATEDIR', localstatedir)
  59 conf.set_quoted('RUNTIME_PATH', runtimepath)
  60 conf.set_quoted('SYSCONFDIR', sysconfdir)
  61
  62 conf.set_quoted('LXCCONFDIR', lxcconfdir)
  63 conf.set_quoted('LXCFS_BUILD_ROOT', project_build_root)
  64 conf.set_quoted('LXCFSSHAREDIR', lxcfssharedir)
  65 conf.set_quoted('LXCFS_SOURCE_ROOT', project_source_root)
  66 conf.set_quoted('LXCFSTARGETDIR', join_paths(localstatedir, 'lib/lxcfs'))
  67
  68 # Custom configuration.
  69 init_script = get_option('init-script')
  70 want_tests = get_option('tests')
  71
  72
  73 # Build flags.
  74 possible_cc_flags = [
  75     '-Wvla',
  76     '-Wimplicit-fallthrough=5',
  77     '-Wcast-align',
  78     '-Wstrict-prototypes',
  79     '-fno-strict-aliasing',
  80     '-fstack-clash-protection',
  81     '-fstack-protector-strong',
  82     '--param=ssp-buffer-size=4',
  83     '--mcet -fcf-protection',
  84     '-Werror=implicit-function-declaration',
  85     '-Wlogical-op',
  86     '-Wmissing-include-dirs',
  87     '-Wold-style-definition',
  88     '-Winit-self',
  89     '-Wunused-but-set-variable',
  90     '-Wno-unused-parameter',
  91     '-Wfloat-equal',
  92     '-Wsuggest-attribute=noreturn',
  93     '-Werror=return-type',
  94     '-Werror=incompatible-pointer-types',
  95     '-Wformat=2',
  96     '-Wshadow',
  97     '-Wendif-labels',
  98     '-Werror=overflow',
  99     '-fdiagnostics-show-option',
 100     '-Werror=shift-count-overflow',
 101     '-Werror=shift-overflow=2',
 102     '-Wdate-time',
 103     '-Wnested-externs',
 104     '-fasynchronous-unwind-tables',
 105     '-fexceptions',
 106     '-Warray-bounds',
 107     '-Wrestrict',
 108     '-Wreturn-local-addr',
 109     '-fsanitize=cfi',
 110     '-Wstringop-overflow',
 111 ]
 112
 113 possible_link_flags = [
 114     '-Wl,--gc-sections',
 115     '-Wl,-z,relro',
 116     '-Wl,-z,now',
 117     '-Wl,-fuse-ld=gold',
 118 ]
 119
 120 if meson.version().version_compare('>=0.46')
 121     add_project_link_arguments(cc.get_supported_link_arguments(possible_link_flags), language: 'c')
 122 else
 123     add_project_link_arguments(possible_link_flags, language: 'c')
 124 endif
 125
 126 add_project_arguments(cc.get_supported_arguments(possible_cc_flags), language: 'c')
 127
 128 # Feature detection.
 129 foreach ident: [
 130     ['strlcpy', '''#include <string.h>'''],
 131     ['strlcat', '''#include <string.h>'''],
 132     ['pidfd_send_signal',
 133      '''#include <stdlib.h>
 134         #include <unistd.h>
 135         #include <signal.h>
 136         #include <sys/wait.h>'''],
 137     ['pidfd_open',
 138      '''#include <stdlib.h>
 139         #include <unistd.h>
 140         #include <signal.h>
 141         #include <sys/wait.h>'''],
 142 ]
 143     have = cc.has_function(ident[0], prefix: ident[1], args: '-D_GNU_SOURCE')
 144     conf.set10('HAVE_' + ident[0].to_upper(), have)
 145 endforeach
 146
 147 libfuse = dependency('fuse3', required: false)
 148 if libfuse.found()
 149     conf.set10('HAVE_FUSE3', true)
 150     conf.set('FUSE_USE_VERSION', 30)
 151 else
 152     libfuse = dependency('fuse', version: '>= 2.6')
 153     if libfuse.found()
 154         conf.set10('HAVE_FUSE', true)
 155         conf.set('FUSE_USE_VERSION', 26)
 156     endif
 157 endif
 158
 159 libdl = cc.find_library('dl')
 160 threads = dependency('threads')
 161
 162 config_h = configure_file(
 163     output: 'config.h',
 164     configuration: conf)
 165 config_include = include_directories('.')
 166 add_project_arguments('-include', 'config.h', language: 'c')
 167
 168 # Binary.
 169 lxcfs_sources = files('src/lxcfs.c')
 170 public_programs = []
 171 public_programs += executable(
 172     'lxcfs',
 173     lxcfs_sources,
 174     dependencies: [
 175         threads,
 176         libdl,
 177         libfuse,
 178     ],
 179     install: true,
 180     install_dir: bindir)
 181
 182 # Library.
 183 liblxcfs_sources = files(
 184     'src/api_extensions.h',
 185     'src/bindings.c',
 186     'src/bindings.h',
 187     'src/cgroups/cgfsng.c',
 188     'src/cgroups/cgroup.c',
 189     'src/cgroups/cgroup.h',
 190     'src/cgroups/cgroup2_devices.c',
 191     'src/cgroups/cgroup2_devices.h',
 192     'src/cgroups/cgroup_utils.c',
 193     'src/cgroups/cgroup_utils.h',
 194     'src/cgroup_fuse.c',
 195     'src/cgroup_fuse.h',
 196     'src/cpuset_parse.c',
 197     'src/cpuset_parse.h',
 198     'src/lxcfs.c',
 199     'src/lxcfs_fuse.h',
 200     'src/lxcfs_fuse_compat.h',
 201     'src/macro.h',
 202     'src/memory_utils.h',
 203     'src/proc_cpuview.c',
 204     'src/proc_cpuview.h',
 205     'src/proc_fuse.c',
 206     'src/proc_fuse.h',
 207     'src/proc_loadavg.c',
 208     'src/proc_loadavg.h',
 209     'src/syscall_numbers.h',
 210     'src/sysfs_fuse.c',
 211     'src/sysfs_fuse.h',
 212     'src/utils.c',
 213     'src/utils.h')
 214
 215 liblxcfs_common_dependencies = declare_dependency(
 216     sources: liblxcfs_sources,
 217     dependencies: [
 218         threads,
 219         libfuse,
 220     ])
 221
 222 liblxcfs = shared_module(
 223     'lxcfs',
 224     liblxcfs_sources,
 225     dependencies: liblxcfs_common_dependencies,
 226     install: true,
 227     install_dir: lxcfsdir)
 228
 229 # Tests.
 230 test_programs = []
 231 if want_tests == true
 232     liblxcfs_test = shared_module(
 233         'lxcfstest',
 234         liblxcfs_sources,
 235         dependencies: liblxcfs_common_dependencies,
 236         install: false,
 237         install_dir: lxcfsdir,
 238         c_args: '-DRELOADTEST -DDEBUG')
 239 endif
 240
 241 # RPM spec.
 242 lxcfs_spec = custom_target(
 243     'lxcfs.spec',
 244     build_by_default: true,
 245     input: 'lxcfs.spec.in',
 246     output: 'lxcfs.spec',
 247     command: [
 248         meson_render_jinja2,
 249         config_h,
 250         '@INPUT@',
 251         '@OUTPUT@',
 252     ])
 253
 254 # Include sub-directories.
 255 subdir('config/init')
 256 subdir('share')
 257 subdir('tests')
 258
 259 # Build overview.
 260 status = [
 261     '@0@ @1@'.format(meson.project_name(), meson.project_version()),
 262
 263     'FUSE version:                      @0@'.format(libfuse.version()),
 264     'bin directory:                     @0@'.format(bindir),
 265     'lib directory:                     @0@'.format(libdir),
 266     'data directory:            @0@'.format(datadir),
 267     'local state directory:             @0@'.format(localstatedir),
 268     'prefix directory:          @0@'.format(prefixdir),
 269     'runtime directory:         @0@'.format(runtimepath),
 270     'sysconf directory:         @0@'.format(sysconfdir),
 271     'lxc conf directory:                @0@'.format(lxcconfdir),
 272     'lxcfs directory:           @0@'.format(lxcfsdir),
 273     'lxcfs shared directory:    @0@'.format(lxcfssharedir),
 274     'lxcfs build root directory:        @0@'.format(project_build_root),
 275     'lxcfs source root directory:       @0@'.format(project_source_root),
 276     'init system:                       @0@'.format(init_script),
 277     'tests:                             @0@'.format(want_tests),
 278 ]
 279 message('\n         '.join(status))