1# SPDX-License-Identifier: BSD-3-Clause 2# Copyright(c) 2017-2019 Intel Corporation 3 4# check the OS is supported, rather than going any further 5supported_exec_envs = ['freebsd', 'linux', 'windows'] 6exec_env = host_machine.system() 7if not supported_exec_envs.contains(exec_env) 8 error('unsupported system type "@0@"'.format(exec_env)) 9endif 10 11# define a handy variable for checking which OS we have. 12# gives us "is_windows", "is_freebsd" and "is_linux" 13foreach env:supported_exec_envs 14 set_variable('is_' + env, exec_env == env) 15endforeach 16 17# MS linker requires special treatment. 18# TODO: use cc.get_linker_id() with Meson >= 0.54 19is_ms_linker = is_windows and (cc.get_id() == 'clang') 20 21# set the major version, which might be used by drivers and libraries 22# depending on the configuration options 23pver = meson.project_version().split('.') 24major_version = '@0@.@1@'.format(pver.get(0), pver.get(1)) 25abi_version = run_command(find_program('cat', 'more'), 26 abi_version_file).stdout().strip() 27 28# Libraries have the abi_version as the filename extension 29# and have the soname be all but the final part of the abi_version. 30# e.g. v20.1 => librte_foo.so.20.1 31# sonames => librte_foo.so.20 32so_version = abi_version.split('.')[0] 33 34# extract all version information into the build configuration 35dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int()) 36dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int()) 37if pver.get(2).contains('-rc') 38 rc_ver = pver.get(2).split('-rc') 39 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int()) 40 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc') 41 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int()) 42else 43 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int()) 44 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '') 45# for actual, non-rc releases, set the release value to 99 to ensure releases 46# have higher version numbers than their respective release candidates 47 dpdk_conf.set('RTE_VER_RELEASE', 99) 48endif 49 50pmd_subdir_opt = get_option('drivers_install_subdir') 51if pmd_subdir_opt.contains('<VERSION>') 52 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>')) 53endif 54driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt) 55eal_pmd_path = join_paths(get_option('prefix'), driver_install_path) 56 57# driver .so files often depend upon the bus drivers for their connect bus, 58# e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need 59# to be in the library path, so symlink the drivers from the main lib directory. 60if not is_windows 61 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh', 62 get_option('libdir'), 63 pmd_subdir_opt) 64endif 65 66# init disable/enable driver lists that will be populated in different places 67disable_drivers = '' 68enable_drivers = '' 69 70# set the machine type and cflags for it 71if meson.is_cross_build() 72 machine = host_machine.cpu() 73else 74 machine = get_option('machine') 75endif 76 77# machine type 'generic' is special, it selects the per arch agreed common 78# minimal baseline needed for DPDK. Machine type 'default' is also supported 79# with the same meaning for backwards compatibility. 80# That might not be the most optimized, but the most portable version while 81# still being able to support the CPU features required for DPDK. 82# This can be bumped up by the DPDK project, but it can never be an 83# invariant like 'native' 84if machine == 'default' or machine == 'generic' 85 if host_machine.cpu_family().startswith('x86') 86 # matches the old pre-meson build systems generic machine 87 machine = 'corei7' 88 elif host_machine.cpu_family().startswith('arm') 89 machine = 'armv7-a' 90 elif host_machine.cpu_family().startswith('aarch') 91 # arm64 manages generic config in config/arm/meson.build 92 machine = 'generic' 93 elif host_machine.cpu_family().startswith('ppc') 94 machine = 'power8' 95 endif 96endif 97 98dpdk_conf.set('RTE_MACHINE', machine) 99machine_args = [] 100 101# ppc64 does not support -march= at all, use -mcpu and -mtune for that 102if host_machine.cpu_family().startswith('ppc') 103 machine_args += '-mcpu=' + machine 104 machine_args += '-mtune=' + machine 105else 106 machine_args += '-march=' + machine 107endif 108 109toolchain = cc.get_id() 110dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain) 111dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1) 112 113dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8) 114dpdk_conf.set('RTE_ARCH_32', cc.sizeof('void *') == 4) 115 116if not is_windows 117 add_project_link_arguments('-Wl,--no-as-needed', language: 'c') 118endif 119 120# use pthreads if available for the platform 121if not is_windows 122 add_project_link_arguments('-pthread', language: 'c') 123 dpdk_extra_ldflags += '-pthread' 124endif 125 126# on some OS, maths functions are in a separate library 127if cc.find_library('m', required : false).found() 128 # some libs depend on maths lib 129 add_project_link_arguments('-lm', language: 'c') 130 dpdk_extra_ldflags += '-lm' 131endif 132 133if is_linux 134 link_lib = 'dl' 135else 136 link_lib = '' 137endif 138 139# if link_lib is empty, do not add it to project properties 140if link_lib != '' 141 add_project_link_arguments('-l' + link_lib, language: 'c') 142 dpdk_extra_ldflags += '-l' + link_lib 143endif 144 145# check for libraries used in multiple places in DPDK 146has_libnuma = 0 147find_libnuma = true 148if meson.is_cross_build() and not meson.get_cross_property('numa', true) 149 # don't look for libnuma if explicitly disabled in cross build 150 find_libnuma = false 151endif 152if find_libnuma 153 numa_dep = cc.find_library('numa', required: false) 154 if numa_dep.found() and cc.has_header('numaif.h') 155 dpdk_conf.set10('RTE_HAS_LIBNUMA', true) 156 has_libnuma = 1 157 add_project_link_arguments('-lnuma', language: 'c') 158 dpdk_extra_ldflags += '-lnuma' 159 endif 160endif 161 162has_libfdt = 0 163fdt_dep = cc.find_library('libfdt', required: false) 164if fdt_dep.found() and cc.has_header('fdt.h') 165 dpdk_conf.set10('RTE_HAS_LIBFDT', true) 166 has_libfdt = 1 167 add_project_link_arguments('-lfdt', language: 'c') 168 dpdk_extra_ldflags += '-lfdt' 169endif 170 171libexecinfo = cc.find_library('libexecinfo', required: false) 172if libexecinfo.found() and cc.has_header('execinfo.h') 173 add_project_link_arguments('-lexecinfo', language: 'c') 174 dpdk_extra_ldflags += '-lexecinfo' 175endif 176 177# check for libbsd 178libbsd = dependency('libbsd', required: false, method: 'pkg-config') 179if libbsd.found() 180 dpdk_conf.set('RTE_USE_LIBBSD', 1) 181endif 182 183# check for pcap 184pcap_dep = dependency('libpcap', required: false, method: 'pkg-config') 185if not pcap_dep.found() 186 # pcap got a pkg-config file only in 1.9.0 187 pcap_dep = cc.find_library('pcap', required: false) 188endif 189if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep) 190 dpdk_conf.set('RTE_PORT_PCAP', 1) 191 dpdk_extra_ldflags += '-lpcap' 192endif 193 194# for clang 32-bit compiles we need libatomic for 64-bit atomic ops 195if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false 196 atomic_dep = cc.find_library('atomic', required: true) 197 add_project_link_arguments('-latomic', language: 'c') 198 dpdk_extra_ldflags += '-latomic' 199endif 200 201# add -include rte_config to cflags 202add_project_arguments('-include', 'rte_config.h', language: 'c') 203 204# enable extra warnings and disable any unwanted warnings 205warning_flags = [ 206 # -Wall is added by meson by default, so add -Wextra only 207 '-Wextra', 208 209 # additional warnings in alphabetical order 210 '-Wcast-qual', 211 '-Wdeprecated', 212 '-Wformat', 213 '-Wformat-nonliteral', 214 '-Wformat-security', 215 '-Wmissing-declarations', 216 '-Wmissing-prototypes', 217 '-Wnested-externs', 218 '-Wold-style-definition', 219 '-Wpointer-arith', 220 '-Wsign-compare', 221 '-Wstrict-prototypes', 222 '-Wundef', 223 '-Wwrite-strings', 224 225 # globally disabled warnings 226 '-Wno-address-of-packed-member', 227 '-Wno-packed-not-aligned', 228 '-Wno-missing-field-initializers' 229] 230if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0') 231# FIXME: Bugzilla 396 232 warning_flags += '-Wno-zero-length-bounds' 233endif 234if not dpdk_conf.get('RTE_ARCH_64') 235# for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!! 236 warning_flags += '-Wno-pointer-to-int-cast' 237endif 238if cc.get_id() == 'intel' 239 warning_ids = [181, 188, 2203, 2279, 2557, 3179, 3656] 240 foreach i:warning_ids 241 warning_flags += '-diag-disable=@0@'.format(i) 242 endforeach 243endif 244foreach arg: warning_flags 245 if cc.has_argument(arg) 246 add_project_arguments(arg, language: 'c') 247 endif 248endforeach 249 250# set other values pulled from the build options 251dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores')) 252dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes')) 253dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports')) 254dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet')) 255dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp')) 256# values which have defaults which may be overridden 257dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) 258dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64) 259dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true) 260if dpdk_conf.get('RTE_ARCH_64') 261 dpdk_conf.set('RTE_MAX_MEM_MB', 524288) 262else # for 32-bit we need smaller reserved memory areas 263 dpdk_conf.set('RTE_MAX_MEM_MB', 2048) 264endif 265 266 267compile_time_cpuflags = [] 268subdir(arch_subdir) 269dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags)) 270 271# apply cross-specific options 272if meson.is_cross_build() 273 # configure RTE_MAX_LCORE and RTE_MAX_NUMA_NODES from cross file 274 cross_max_lcores = meson.get_cross_property('max_lcores', 0) 275 if cross_max_lcores != 0 276 message('Setting RTE_MAX_LCORE from cross file') 277 dpdk_conf.set('RTE_MAX_LCORE', cross_max_lcores) 278 endif 279 cross_max_numa_nodes = meson.get_cross_property('max_numa_nodes', 0) 280 if cross_max_numa_nodes != 0 281 message('Setting RTE_MAX_NUMA_NODES from cross file') 282 dpdk_conf.set('RTE_MAX_NUMA_NODES', cross_max_numa_nodes) 283 endif 284endif 285 286# set the install path for the drivers 287dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path) 288 289install_headers(['rte_config.h'], 290 subdir: get_option('include_subdir_arch')) 291 292# enable VFIO only if it is linux OS 293dpdk_conf.set('RTE_EAL_VFIO', is_linux) 294 295# specify -D_GNU_SOURCE unconditionally 296add_project_arguments('-D_GNU_SOURCE', language: 'c') 297 298# specify -D__BSD_VISIBLE for FreeBSD 299if is_freebsd 300 add_project_arguments('-D__BSD_VISIBLE', language: 'c') 301endif 302 303if is_windows 304 # VirtualAlloc2() is available since Windows 10 / Server 2016. 305 add_project_arguments('-D_WIN32_WINNT=0x0A00', language: 'c') 306 307 # Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting. 308 if cc.get_id() == 'gcc' 309 add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c') 310 endif 311 312 # Disable secure CRT deprecated warnings for clang 313 if cc.get_id() == 'clang' 314 add_project_arguments('-D_CRT_SECURE_NO_WARNINGS', language: 'c') 315 endif 316 317 add_project_link_arguments('-lws2_32', language: 'c') 318 319 # Contrary to docs, VirtualAlloc2() is exported by mincore.lib 320 # in Windows SDK, while MinGW exports it by advapi32.a. 321 if is_ms_linker 322 add_project_link_arguments('-lmincore', language: 'c') 323 endif 324 325 add_project_link_arguments('-ladvapi32', '-lsetupapi', language: 'c') 326 add_project_link_arguments('-ldbghelp', language: 'c') 327endif 328 329if get_option('b_lto') 330 if cc.has_argument('-ffat-lto-objects') 331 add_project_arguments('-ffat-lto-objects', language: 'c') 332 else 333 error('compiler does not support fat LTO objects - please turn LTO off') 334 endif 335 # workaround for gcc bug 81440 336 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0') 337 add_project_arguments('-Wno-lto-type-mismatch', language: 'c') 338 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c') 339 endif 340endif 341 342if get_option('default_library') == 'both' 343 error( ''' 344 Unsupported value "both" for "default_library" option. 345 346 NOTE: DPDK always builds both shared and static libraries. Please set 347 "default_library" to either "static" or "shared" to select default linkage 348 for apps and any examples.''') 349endif 350