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# set the machine type and cflags for it 67if meson.is_cross_build() 68 machine = host_machine.cpu() 69else 70 machine = get_option('machine') 71endif 72 73# machine type 'default' is special, it defaults to the per arch agreed common 74# minimal baseline needed for DPDK. 75# That might not be the most optimized, but the most portable version while 76# still being able to support the CPU features required for DPDK. 77# This can be bumped up by the DPDK project, but it can never be an 78# invariant like 'native' 79if machine == 'default' 80 if host_machine.cpu_family().startswith('x86') 81 # matches the old pre-meson build systems default 82 machine = 'corei7' 83 elif host_machine.cpu_family().startswith('arm') 84 machine = 'armv7-a' 85 elif host_machine.cpu_family().startswith('aarch') 86 # arm64 manages defaults in config/arm/meson.build 87 machine = 'default' 88 elif host_machine.cpu_family().startswith('ppc') 89 machine = 'power8' 90 endif 91endif 92 93dpdk_conf.set('RTE_MACHINE', machine) 94machine_args = [] 95 96# ppc64 does not support -march= at all, use -mcpu and -mtune for that 97if host_machine.cpu_family().startswith('ppc') 98 machine_args += '-mcpu=' + machine 99 machine_args += '-mtune=' + machine 100else 101 machine_args += '-march=' + machine 102endif 103 104toolchain = cc.get_id() 105dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain) 106dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1) 107 108dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8) 109dpdk_conf.set('RTE_ARCH_32', cc.sizeof('void *') == 4) 110 111if not is_windows 112 add_project_link_arguments('-Wl,--no-as-needed', language: 'c') 113endif 114 115# use pthreads if available for the platform 116if not is_windows 117 add_project_link_arguments('-pthread', language: 'c') 118 dpdk_extra_ldflags += '-pthread' 119endif 120 121# on some OS, maths functions are in a separate library 122if cc.find_library('m', required : false).found() 123 # some libs depend on maths lib 124 add_project_link_arguments('-lm', language: 'c') 125 dpdk_extra_ldflags += '-lm' 126endif 127 128# for linux link against dl, for bsd execinfo 129if is_linux 130 link_lib = 'dl' 131elif is_freebsd 132 link_lib = 'execinfo' 133else 134 link_lib = '' 135endif 136 137# if link_lib is empty, do not add it to project properties 138if link_lib != '' 139 add_project_link_arguments('-l' + link_lib, language: 'c') 140 dpdk_extra_ldflags += '-l' + link_lib 141endif 142 143# check for libraries used in multiple places in DPDK 144has_libnuma = 0 145find_libnuma = true 146if meson.is_cross_build() and not meson.get_cross_property('numa', true) 147 # don't look for libnuma if explicitly disabled in cross build 148 find_libnuma = false 149endif 150if find_libnuma 151 numa_dep = cc.find_library('numa', required: false) 152 if numa_dep.found() and cc.has_header('numaif.h') 153 dpdk_conf.set10('RTE_HAS_LIBNUMA', true) 154 has_libnuma = 1 155 add_project_link_arguments('-lnuma', language: 'c') 156 dpdk_extra_ldflags += '-lnuma' 157 endif 158endif 159 160has_libfdt = 0 161fdt_dep = cc.find_library('libfdt', required: false) 162if fdt_dep.found() and cc.has_header('fdt.h') 163 dpdk_conf.set10('RTE_HAS_LIBFDT', true) 164 has_libfdt = 1 165 add_project_link_arguments('-lfdt', language: 'c') 166 dpdk_extra_ldflags += '-lfdt' 167endif 168 169# check for libbsd 170libbsd = dependency('libbsd', required: false) 171if libbsd.found() 172 dpdk_conf.set('RTE_USE_LIBBSD', 1) 173endif 174 175# check for pcap 176pcap_dep = dependency('libpcap', required: false, method: 'pkg-config') 177if not pcap_dep.found() 178 # pcap got a pkg-config file only in 1.9.0 179 pcap_dep = cc.find_library('pcap', required: false) 180endif 181if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep) 182 dpdk_conf.set('RTE_PORT_PCAP', 1) 183 dpdk_extra_ldflags += '-lpcap' 184endif 185 186# for clang 32-bit compiles we need libatomic for 64-bit atomic ops 187if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false 188 atomic_dep = cc.find_library('atomic', required: true) 189 add_project_link_arguments('-latomic', language: 'c') 190 dpdk_extra_ldflags += '-latomic' 191endif 192 193# add -include rte_config to cflags 194add_project_arguments('-include', 'rte_config.h', language: 'c') 195 196# enable extra warnings and disable any unwanted warnings 197warning_flags = [ 198 # -Wall is added by meson by default, so add -Wextra only 199 '-Wextra', 200 201 # additional warnings in alphabetical order 202 '-Wcast-qual', 203 '-Wdeprecated', 204 '-Wformat', 205 '-Wformat-nonliteral', 206 '-Wformat-security', 207 '-Wmissing-declarations', 208 '-Wmissing-prototypes', 209 '-Wnested-externs', 210 '-Wold-style-definition', 211 '-Wpointer-arith', 212 '-Wsign-compare', 213 '-Wstrict-prototypes', 214 '-Wundef', 215 '-Wwrite-strings', 216 217 # globally disabled warnings 218 '-Wno-address-of-packed-member', 219 '-Wno-packed-not-aligned', 220 '-Wno-missing-field-initializers' 221] 222if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0') 223# FIXME: Bugzilla 396 224 warning_flags += '-Wno-zero-length-bounds' 225endif 226if not dpdk_conf.get('RTE_ARCH_64') 227# for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!! 228 warning_flags += '-Wno-pointer-to-int-cast' 229endif 230if cc.get_id() == 'intel' 231 warning_ids = [181, 188, 2203, 2279, 2557, 3179, 3656] 232 foreach i:warning_ids 233 warning_flags += '-diag-disable=@0@'.format(i) 234 endforeach 235endif 236foreach arg: warning_flags 237 if cc.has_argument(arg) 238 add_project_arguments(arg, language: 'c') 239 endif 240endforeach 241 242# set other values pulled from the build options 243dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores')) 244dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes')) 245dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports')) 246dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet')) 247dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp')) 248# values which have defaults which may be overridden 249dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) 250dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64) 251dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true) 252if dpdk_conf.get('RTE_ARCH_64') 253 dpdk_conf.set('RTE_MAX_MEM_MB', 524288) 254else # for 32-bit we need smaller reserved memory areas 255 dpdk_conf.set('RTE_MAX_MEM_MB', 2048) 256endif 257 258 259compile_time_cpuflags = [] 260subdir(arch_subdir) 261dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags)) 262 263# apply cross-specific options 264if meson.is_cross_build() 265 # configure RTE_MAX_LCORE and RTE_MAX_NUMA_NODES from cross file 266 cross_max_lcores = meson.get_cross_property('max_lcores', 0) 267 if cross_max_lcores != 0 268 message('Setting RTE_MAX_LCORE from cross file') 269 dpdk_conf.set('RTE_MAX_LCORE', cross_max_lcores) 270 endif 271 cross_max_numa_nodes = meson.get_cross_property('max_numa_nodes', 0) 272 if cross_max_numa_nodes != 0 273 message('Setting RTE_MAX_NUMA_NODES from cross file') 274 dpdk_conf.set('RTE_MAX_NUMA_NODES', cross_max_numa_nodes) 275 endif 276endif 277 278# set the install path for the drivers 279dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path) 280 281install_headers(['rte_config.h', 'rte_compatibility_defines.h'], 282 subdir: get_option('include_subdir_arch')) 283 284# enable VFIO only if it is linux OS 285dpdk_conf.set('RTE_EAL_VFIO', is_linux) 286 287# specify -D_GNU_SOURCE unconditionally 288add_project_arguments('-D_GNU_SOURCE', language: 'c') 289 290# specify -D__BSD_VISIBLE for FreeBSD 291if is_freebsd 292 add_project_arguments('-D__BSD_VISIBLE', language: 'c') 293endif 294 295if is_windows 296 # VirtualAlloc2() is available since Windows 10 / Server 2016. 297 add_project_arguments('-D_WIN32_WINNT=0x0A00', language: 'c') 298 299 # Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting. 300 if cc.get_id() == 'gcc' 301 add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c') 302 endif 303 304 # Disable secure CRT deprecated warnings for clang 305 if cc.get_id() == 'clang' 306 add_project_arguments('-D_CRT_SECURE_NO_WARNINGS', language: 'c') 307 endif 308 309 add_project_link_arguments('-lws2_32', language: 'c') 310 311 # Contrary to docs, VirtualAlloc2() is exported by mincore.lib 312 # in Windows SDK, while MinGW exports it by advapi32.a. 313 if is_ms_linker 314 add_project_link_arguments('-lmincore', language: 'c') 315 endif 316 317 add_project_link_arguments('-ladvapi32', '-lsetupapi', language: 'c') 318 add_project_link_arguments('-ldbghelp', language: 'c') 319endif 320 321if get_option('b_lto') 322 if cc.has_argument('-ffat-lto-objects') 323 add_project_arguments('-ffat-lto-objects', language: 'c') 324 else 325 error('compiler does not support fat LTO objects - please turn LTO off') 326 endif 327 # workaround for gcc bug 81440 328 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0') 329 add_project_arguments('-Wno-lto-type-mismatch', language: 'c') 330 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c') 331 endif 332endif 333