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. 60meson.add_install_script('../buildtools/symlink-drivers-solibs.sh', 61 get_option('libdir'), 62 pmd_subdir_opt) 63 64# set the machine type and cflags for it 65if meson.is_cross_build() 66 machine = host_machine.cpu() 67else 68 machine = get_option('machine') 69endif 70 71# machine type 'default' is special, it defaults to the per arch agreed common 72# minimal baseline needed for DPDK. 73# That might not be the most optimized, but the most portable version while 74# still being able to support the CPU features required for DPDK. 75# This can be bumped up by the DPDK project, but it can never be an 76# invariant like 'native' 77if machine == 'default' 78 if host_machine.cpu_family().startswith('x86') 79 # matches the old pre-meson build systems default 80 machine = 'corei7' 81 elif host_machine.cpu_family().startswith('arm') 82 machine = 'armv7-a' 83 elif host_machine.cpu_family().startswith('aarch') 84 # arm64 manages defaults in config/arm/meson.build 85 machine = 'default' 86 elif host_machine.cpu_family().startswith('ppc') 87 machine = 'power8' 88 endif 89endif 90 91dpdk_conf.set('RTE_MACHINE', machine) 92machine_args = [] 93 94# ppc64 does not support -march= at all, use -mcpu and -mtune for that 95if host_machine.cpu_family().startswith('ppc') 96 machine_args += '-mcpu=' + machine 97 machine_args += '-mtune=' + machine 98else 99 machine_args += '-march=' + machine 100endif 101 102toolchain = cc.get_id() 103dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain) 104dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1) 105 106dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8) 107 108if not is_windows 109 add_project_link_arguments('-Wl,--no-as-needed', language: 'c') 110endif 111 112# use pthreads if available for the platform 113if not is_windows 114 add_project_link_arguments('-pthread', language: 'c') 115 dpdk_extra_ldflags += '-pthread' 116endif 117 118# on some OS, maths functions are in a separate library 119if cc.find_library('m', required : false).found() 120 # some libs depend on maths lib 121 add_project_link_arguments('-lm', language: 'c') 122 dpdk_extra_ldflags += '-lm' 123endif 124 125# for linux link against dl, for bsd execinfo 126if is_linux 127 link_lib = 'dl' 128elif is_freebsd 129 link_lib = 'execinfo' 130else 131 link_lib = '' 132endif 133 134# if link_lib is empty, do not add it to project properties 135if link_lib != '' 136 add_project_link_arguments('-l' + link_lib, language: 'c') 137 dpdk_extra_ldflags += '-l' + link_lib 138endif 139 140# check for libraries used in multiple places in DPDK 141has_libnuma = 0 142numa_dep = cc.find_library('numa', required: false) 143if numa_dep.found() and cc.has_header('numaif.h') 144 dpdk_conf.set10('RTE_HAS_LIBNUMA', true) 145 has_libnuma = 1 146 add_project_link_arguments('-lnuma', language: 'c') 147 dpdk_extra_ldflags += '-lnuma' 148endif 149 150has_libfdt = 0 151fdt_dep = cc.find_library('libfdt', required: false) 152if fdt_dep.found() and cc.has_header('fdt.h') 153 dpdk_conf.set10('RTE_HAS_LIBFDT', true) 154 has_libfdt = 1 155 add_project_link_arguments('-lfdt', language: 'c') 156 dpdk_extra_ldflags += '-lfdt' 157endif 158 159# check for libbsd 160libbsd = dependency('libbsd', required: false) 161if libbsd.found() 162 dpdk_conf.set('RTE_USE_LIBBSD', 1) 163endif 164 165# check for pcap 166pcap_dep = dependency('pcap', required: false) 167if pcap_dep.found() 168 # pcap got a pkg-config file only in 1.9.0 and before that meson uses 169 # an internal pcap-config finder, which is not compatible with 170 # cross-compilation, so try to fallback to find_library 171 pcap_dep = cc.find_library('pcap', required: false) 172endif 173if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep) 174 dpdk_conf.set('RTE_PORT_PCAP', 1) 175 dpdk_extra_ldflags += '-lpcap' 176endif 177 178# for clang 32-bit compiles we need libatomic for 64-bit atomic ops 179if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false 180 atomic_dep = cc.find_library('atomic', required: true) 181 add_project_link_arguments('-latomic', language: 'c') 182 dpdk_extra_ldflags += '-latomic' 183endif 184 185# add -include rte_config to cflags 186add_project_arguments('-include', 'rte_config.h', language: 'c') 187 188# enable extra warnings and disable any unwanted warnings 189warning_flags = [ 190 # -Wall is added by meson by default, so add -Wextra only 191 '-Wextra', 192 193 # additional warnings in alphabetical order 194 '-Wcast-qual', 195 '-Wdeprecated', 196 '-Wformat-nonliteral', 197 '-Wformat-security', 198 '-Wmissing-declarations', 199 '-Wmissing-prototypes', 200 '-Wnested-externs', 201 '-Wold-style-definition', 202 '-Wpointer-arith', 203 '-Wsign-compare', 204 '-Wstrict-prototypes', 205 '-Wundef', 206 '-Wwrite-strings', 207 208 # globally disabled warnings 209 '-Wno-address-of-packed-member', 210 '-Wno-packed-not-aligned', 211 '-Wno-missing-field-initializers' 212] 213if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0') 214# FIXME: Bugzilla 396 215 warning_flags += '-Wno-zero-length-bounds' 216endif 217if not dpdk_conf.get('RTE_ARCH_64') 218# for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!! 219 warning_flags += '-Wno-pointer-to-int-cast' 220endif 221if cc.get_id() == 'intel' 222 warning_ids = [188, 2203, 2279, 2557, 3179, 3656] 223 foreach i:warning_ids 224 warning_flags += '-diag-disable=@0@'.format(i) 225 endforeach 226endif 227foreach arg: warning_flags 228 if cc.has_argument(arg) 229 add_project_arguments(arg, language: 'c') 230 endif 231endforeach 232 233# set other values pulled from the build options 234dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores')) 235dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes')) 236dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports')) 237dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet')) 238dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp')) 239# values which have defaults which may be overridden 240dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) 241dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64) 242dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true) 243if dpdk_conf.get('RTE_ARCH_64') 244 dpdk_conf.set('RTE_MAX_MEM_MB', 524288) 245else # for 32-bit we need smaller reserved memory areas 246 dpdk_conf.set('RTE_MAX_MEM_MB', 2048) 247endif 248 249 250compile_time_cpuflags = [] 251subdir(arch_subdir) 252dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags)) 253 254# set the install path for the drivers 255dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path) 256 257install_headers('rte_config.h', subdir: get_option('include_subdir_arch')) 258 259# enable VFIO only if it is linux OS 260dpdk_conf.set('RTE_EAL_VFIO', is_linux) 261 262# specify -D_GNU_SOURCE unconditionally 263add_project_arguments('-D_GNU_SOURCE', language: 'c') 264 265# specify -D__BSD_VISIBLE for FreeBSD 266if is_freebsd 267 add_project_arguments('-D__BSD_VISIBLE', language: 'c') 268endif 269 270if is_windows 271 # VirtualAlloc2() is available since Windows 10 / Server 2016. 272 add_project_arguments('-D_WIN32_WINNT=0x0A00', language: 'c') 273 274 # Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting. 275 if cc.get_id() == 'gcc' 276 add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c') 277 endif 278 279 # Contrary to docs, VirtualAlloc2() is exported by mincore.lib 280 # in Windows SDK, while MinGW exports it by advapi32.a. 281 if is_ms_linker 282 add_project_link_arguments('-lmincore', language: 'c') 283 endif 284 285 add_project_link_arguments('-ladvapi32', '-lsetupapi', language: 'c') 286 add_project_link_arguments('-ldbghelp', language: 'c') 287endif 288 289if get_option('b_lto') 290 if cc.has_argument('-ffat-lto-objects') 291 add_project_arguments('-ffat-lto-objects', language: 'c') 292 else 293 error('compiler does not support fat LTO objects - please turn LTO off') 294 endif 295 # workaround for gcc bug 81440 296 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0') 297 add_project_arguments('-Wno-lto-type-mismatch', language: 'c') 298 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c') 299 endif 300endif 301