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# set the major version, which might be used by drivers and libraries 18# depending on the configuration options 19pver = meson.project_version().split('.') 20major_version = '@0@.@1@'.format(pver.get(0), pver.get(1)) 21abi_version = run_command(find_program('cat', 'more'), 22 abi_version_file).stdout().strip() 23 24# Regular libraries have the abi_version as the filename extension 25# and have the soname be all but the final part of the abi_version. 26# Experimental libraries have soname with '0.major' 27# and the filename suffix as 0.majorminor versions, 28# e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201 29# sonames => librte_stable.so.20, librte_experimental.so.0.20 30# e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001 31# sonames => librte_stable.so.20.0, librte_experimental.so.0.200 32abi_va = abi_version.split('.') 33stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1] 34experimental_abi_version = '0.' + ''.join(abi_va) 35experimental_so_version = '0.' + ''.join(stable_so_version.split('.')) 36 37# extract all version information into the build configuration 38dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int()) 39dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int()) 40if pver.get(2).contains('-rc') 41 rc_ver = pver.get(2).split('-rc') 42 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int()) 43 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc') 44 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int()) 45else 46 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int()) 47 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '') 48# for actual, non-rc releases, set the release value to 99 to ensure releases 49# have higher version numbers than their respective release candidates 50 dpdk_conf.set('RTE_VER_RELEASE', 99) 51endif 52 53pmd_subdir_opt = get_option('drivers_install_subdir') 54if pmd_subdir_opt.contains('<VERSION>') 55 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>')) 56endif 57driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt) 58eal_pmd_path = join_paths(get_option('prefix'), driver_install_path) 59 60# driver .so files often depend upon the bus drivers for their connect bus, 61# e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need 62# to be in the library path, so symlink the drivers from the main lib directory. 63meson.add_install_script('../buildtools/symlink-drivers-solibs.sh', 64 get_option('libdir'), 65 pmd_subdir_opt) 66 67# set the machine type and cflags for it 68if meson.is_cross_build() 69 machine = host_machine.cpu() 70else 71 machine = get_option('machine') 72endif 73 74# machine type 'default' is special, it defaults to the per arch agreed common 75# minimal baseline needed for DPDK. 76# That might not be the most optimized, but the most portable version while 77# still being able to support the CPU features required for DPDK. 78# This can be bumped up by the DPDK project, but it can never be an 79# invariant like 'native' 80if machine == 'default' 81 if host_machine.cpu_family().startswith('x86') 82 # matches the old pre-meson build systems default 83 machine = 'corei7' 84 elif host_machine.cpu_family().startswith('arm') 85 machine = 'armv7-a' 86 elif host_machine.cpu_family().startswith('aarch') 87 # arm64 manages defaults in config/arm/meson.build 88 machine = 'default' 89 elif host_machine.cpu_family().startswith('ppc') 90 machine = 'power8' 91 endif 92endif 93 94dpdk_conf.set('RTE_MACHINE', machine) 95machine_args = [] 96 97# ppc64 does not support -march= at all, use -mcpu and -mtune for that 98if host_machine.cpu_family().startswith('ppc') 99 machine_args += '-mcpu=' + machine 100 machine_args += '-mtune=' + machine 101else 102 machine_args += '-march=' + machine 103endif 104 105toolchain = cc.get_id() 106dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain) 107dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1) 108 109dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8) 110 111add_project_link_arguments('-Wl,--no-as-needed', language: 'c') 112 113# use pthreads 114add_project_link_arguments('-pthread', language: 'c') 115dpdk_extra_ldflags += '-pthread' 116 117# on some OS, maths functions are in a separate library 118if cc.find_library('m', required : false).found() 119 # some libs depend on maths lib 120 add_project_link_arguments('-lm', language: 'c') 121 dpdk_extra_ldflags += '-lm' 122endif 123 124# for linux link against dl, for bsd execinfo 125if is_linux 126 link_lib = 'dl' 127elif is_freebsd 128 link_lib = 'execinfo' 129else 130 link_lib = '' 131endif 132 133# if link_lib is empty, do not add it to project properties 134if link_lib != '' 135 add_project_link_arguments('-l' + link_lib, language: 'c') 136 dpdk_extra_ldflags += '-l' + link_lib 137endif 138 139# check for libraries used in multiple places in DPDK 140has_libnuma = 0 141numa_dep = cc.find_library('numa', required: false) 142if numa_dep.found() and cc.has_header('numaif.h') 143 dpdk_conf.set10('RTE_HAS_LIBNUMA', true) 144 has_libnuma = 1 145 add_project_link_arguments('-lnuma', language: 'c') 146 dpdk_extra_ldflags += '-lnuma' 147endif 148 149# check for libbsd 150libbsd = dependency('libbsd', required: false) 151if libbsd.found() 152 dpdk_conf.set('RTE_USE_LIBBSD', 1) 153endif 154 155# check for pcap 156pcap_dep = dependency('pcap', required: false) 157if pcap_dep.found() 158 # pcap got a pkg-config file only in 1.9.0 and before that meson uses 159 # an internal pcap-config finder, which is not compatible with 160 # cross-compilation, so try to fallback to find_library 161 pcap_dep = cc.find_library('pcap', required: false) 162endif 163if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep) 164 dpdk_conf.set('RTE_PORT_PCAP', 1) 165 dpdk_extra_ldflags += '-lpcap' 166endif 167 168# add -include rte_config to cflags 169add_project_arguments('-include', 'rte_config.h', language: 'c') 170 171# enable extra warnings and disable any unwanted warnings 172warning_flags = [ 173 # -Wall is added by meson by default, so add -Wextra only 174 '-Wextra', 175 176 # additional warnings in alphabetical order 177 '-Wcast-qual', 178 '-Wdeprecated', 179 '-Wformat-nonliteral', 180 '-Wformat-security', 181 '-Wmissing-declarations', 182 '-Wmissing-prototypes', 183 '-Wnested-externs', 184 '-Wold-style-definition', 185 '-Wpointer-arith', 186 '-Wsign-compare', 187 '-Wstrict-prototypes', 188 '-Wundef', 189 '-Wwrite-strings', 190 191 # globally disabled warnings 192 '-Wno-address-of-packed-member', 193 '-Wno-packed-not-aligned', 194 '-Wno-missing-field-initializers' 195] 196if not dpdk_conf.get('RTE_ARCH_64') 197# for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!! 198 warning_flags += '-Wno-pointer-to-int-cast' 199endif 200foreach arg: warning_flags 201 if cc.has_argument(arg) 202 add_project_arguments(arg, language: 'c') 203 endif 204endforeach 205 206# set other values pulled from the build options 207dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores')) 208dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes')) 209dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports')) 210dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet')) 211# values which have defaults which may be overridden 212dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) 213dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64) 214dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true) 215 216 217compile_time_cpuflags = [] 218if host_machine.cpu_family().startswith('x86') 219 arch_subdir = 'x86' 220elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().startswith('aarch') 221 arch_subdir = 'arm' 222elif host_machine.cpu_family().startswith('ppc') 223 arch_subdir = 'ppc_64' 224endif 225subdir(arch_subdir) 226dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags)) 227 228# set the install path for the drivers 229dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path) 230 231install_headers('rte_config.h', subdir: get_option('include_subdir_arch')) 232 233# enable VFIO only if it is linux OS 234dpdk_conf.set('RTE_EAL_VFIO', is_linux) 235 236# specify -D_GNU_SOURCE unconditionally 237add_project_arguments('-D_GNU_SOURCE', language: 'c') 238 239# specify -D__BSD_VISIBLE for FreeBSD 240if is_freebsd 241 add_project_arguments('-D__BSD_VISIBLE', language: 'c') 242endif 243 244if get_option('b_lto') 245 if cc.has_argument('-ffat-lto-objects') 246 add_project_arguments('-ffat-lto-objects', language: 'c') 247 else 248 error('compiler does not support fat LTO objects - please turn LTO off') 249 endif 250 # workaround for gcc bug 81440 251 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0') 252 add_project_arguments('-Wno-lto-type-mismatch', language: 'c') 253 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c') 254 endif 255endif 256