1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2017-2019 Intel Corporation
4 # check the OS is supported, rather than going any further
5 supported_exec_envs = ['freebsd', 'linux', 'windows']
6 exec_env = host_machine.system()
7 if not supported_exec_envs.contains(exec_env)
8 error('unsupported system type "@0@"'.format(exec_env))
11 # define a handy variable for checking which OS we have.
12 # gives us "is_windows", "is_freebsd" and "is_linux"
13 foreach env:supported_exec_envs
14 set_variable('is_' + env, exec_env == env)
17 # MS linker requires special treatment.
18 # TODO: use cc.get_linker_id() with Meson >= 0.54
19 is_ms_linker = is_windows and (cc.get_id() == 'clang')
21 # set the major version, which might be used by drivers and libraries
22 # depending on the configuration options
23 pver = meson.project_version().split('.')
24 major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
25 abi_version = run_command(find_program('cat', 'more'), abi_version_file).stdout().strip()
27 # Libraries have the abi_version as the filename extension
28 # and have the soname be all but the final part of the abi_version.
29 # e.g. v20.1 => librte_foo.so.20.1
30 # sonames => librte_foo.so.20
31 so_version = abi_version.split('.')[0]
33 # extract all version information into the build configuration
34 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
35 dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int())
36 if pver.get(2).contains('-rc')
37 rc_ver = pver.get(2).split('-rc')
38 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int())
39 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc')
40 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int())
42 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int())
43 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '')
44 # for actual, non-rc releases, set the release value to 99 to ensure releases
45 # have higher version numbers than their respective release candidates
46 dpdk_conf.set('RTE_VER_RELEASE', 99)
49 pmd_subdir_opt = get_option('drivers_install_subdir')
50 if pmd_subdir_opt.contains('<VERSION>')
51 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>'))
53 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
54 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
56 # driver .so files often depend upon the bus drivers for their connect bus,
57 # e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
58 # to be in the library path, so symlink the drivers from the main lib directory.
60 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
61 get_option('libdir'), pmd_subdir_opt)
62 elif meson.version().version_compare('>=0.55.0')
63 # 0.55.0 is required to use external program with add_install_script
64 meson.add_install_script(py3,
65 files('../buildtools/symlink-drivers-solibs.py'),
66 get_option('libdir'), pmd_subdir_opt, get_option('bindir'))
69 # init disable/enable driver lists that will be populated in different places
73 platform = get_option('platform')
75 # set the cpu_instruction_set and cflags for it
76 if meson.is_cross_build()
77 cpu_instruction_set = host_machine.cpu()
79 cpu_instruction_set = get_option('cpu_instruction_set')
80 machine = get_option('machine')
82 warning('The "machine" option is deprecated. ' +
83 'Please use "cpu_instruction_set" instead.')
84 if cpu_instruction_set != 'auto'
85 error('Setting both "machine" and ' +
86 '"cpu_instruction_set" is unsupported.')
88 cpu_instruction_set = machine
89 if cpu_instruction_set == 'default'
90 cpu_instruction_set = 'generic'
95 if platform == 'native'
96 if cpu_instruction_set == 'auto'
97 cpu_instruction_set = 'native'
99 elif platform == 'generic'
100 if cpu_instruction_set == 'auto'
101 cpu_instruction_set = 'generic'
105 # cpu_instruction_set 'generic' is special, it selects the per arch agreed
106 # common minimal baseline needed for DPDK. cpu_instruction_set 'default' is
107 # also supported with the same meaning for backwards compatibility.
108 # That might not be the most optimized, but the most portable version while
109 # still being able to support the CPU features required for DPDK.
110 # This can be bumped up by the DPDK project, but it can never be an
111 # invariant like 'native'
112 if cpu_instruction_set == 'generic'
113 if host_machine.cpu_family().startswith('x86')
114 # matches the old pre-meson build systems generic cpu_instruction_set
115 cpu_instruction_set = 'corei7'
116 elif host_machine.cpu_family().startswith('arm')
117 cpu_instruction_set = 'armv7-a'
118 elif host_machine.cpu_family().startswith('aarch')
119 # arm64 manages generic config in config/arm/meson.build
120 cpu_instruction_set = 'generic'
121 elif host_machine.cpu_family().startswith('ppc')
122 cpu_instruction_set = 'power8'
126 dpdk_conf.set('RTE_MACHINE', cpu_instruction_set)
129 # ppc64 does not support -march= at all, use -mcpu and -mtune for that
130 if host_machine.cpu_family().startswith('ppc')
131 machine_args += '-mcpu=' + cpu_instruction_set
132 machine_args += '-mtune=' + cpu_instruction_set
134 machine_args += '-march=' + cpu_instruction_set
137 toolchain = cc.get_id()
138 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
139 dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1)
141 dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
142 dpdk_conf.set('RTE_ARCH_32', cc.sizeof('void *') == 4)
145 add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
148 # use pthreads if available for the platform
150 add_project_link_arguments('-pthread', language: 'c')
151 dpdk_extra_ldflags += '-pthread'
154 # on some OS, maths functions are in a separate library
155 if cc.find_library('m', required : false).found()
156 # some libs depend on maths lib
157 add_project_link_arguments('-lm', language: 'c')
158 dpdk_extra_ldflags += '-lm'
167 # if link_lib is empty, do not add it to project properties
169 add_project_link_arguments('-l' + link_lib, language: 'c')
170 dpdk_extra_ldflags += '-l' + link_lib
173 # check for libraries used in multiple places in DPDK
176 if meson.is_cross_build() and not meson.get_cross_property('numa', true)
177 # don't look for libnuma if explicitly disabled in cross build
181 numa_dep = cc.find_library('numa', required: false)
182 if numa_dep.found() and cc.has_header('numaif.h')
183 dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
185 add_project_link_arguments('-lnuma', language: 'c')
186 dpdk_extra_ldflags += '-lnuma'
191 fdt_dep = cc.find_library('libfdt', required: false)
192 if fdt_dep.found() and cc.has_header('fdt.h')
193 dpdk_conf.set10('RTE_HAS_LIBFDT', true)
195 add_project_link_arguments('-lfdt', language: 'c')
196 dpdk_extra_ldflags += '-lfdt'
199 libexecinfo = cc.find_library('libexecinfo', required: false)
200 if libexecinfo.found() and cc.has_header('execinfo.h')
201 add_project_link_arguments('-lexecinfo', language: 'c')
202 dpdk_extra_ldflags += '-lexecinfo'
205 libarchive = dependency('libarchive', required: false, method: 'pkg-config')
206 if libarchive.found()
207 dpdk_conf.set('RTE_HAS_LIBARCHIVE', 1)
208 # Push libarchive link dependency at the project level to support
209 # statically linking dpdk apps. Details at:
210 # https://inbox.dpdk.org/dev/20210605004024.660267a1@sovereign/
211 add_project_link_arguments('-larchive', language: 'c')
212 dpdk_extra_ldflags += '-larchive'
216 libbsd = dependency('libbsd', required: false, method: 'pkg-config')
218 dpdk_conf.set('RTE_USE_LIBBSD', 1)
222 pcap_dep = dependency('libpcap', required: false, method: 'pkg-config')
223 pcap_lib = is_windows ? 'wpcap' : 'pcap'
224 if not pcap_dep.found()
225 # pcap got a pkg-config file only in 1.9.0
226 pcap_dep = cc.find_library(pcap_lib, required: false)
228 if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
229 dpdk_conf.set('RTE_PORT_PCAP', 1)
230 dpdk_extra_ldflags += '-l@0@'.format(pcap_lib)
233 # for clang 32-bit compiles we need libatomic for 64-bit atomic ops
234 if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
235 atomic_dep = cc.find_library('atomic', required: true)
236 add_project_link_arguments('-latomic', language: 'c')
237 dpdk_extra_ldflags += '-latomic'
240 # add -include rte_config to cflags
241 add_project_arguments('-include', 'rte_config.h', language: 'c')
243 # enable extra warnings and disable any unwanted warnings
245 # -Wall is added by meson by default, so add -Wextra only
248 # additional warnings in alphabetical order
252 '-Wformat-nonliteral',
254 '-Wmissing-declarations',
255 '-Wmissing-prototypes',
257 '-Wold-style-definition',
260 '-Wstrict-prototypes',
264 # globally disabled warnings
265 '-Wno-address-of-packed-member',
266 '-Wno-packed-not-aligned',
267 '-Wno-missing-field-initializers',
269 if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0')
270 # FIXME: Bugzilla 396
271 warning_flags += '-Wno-zero-length-bounds'
273 if not dpdk_conf.get('RTE_ARCH_64')
274 # for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!!
275 warning_flags += '-Wno-pointer-to-int-cast'
277 if cc.get_id() == 'intel'
278 warning_ids = [181, 188, 2203, 2279, 2557, 3179, 3656]
279 foreach i:warning_ids
280 warning_flags += '-diag-disable=@0@'.format(i)
283 foreach arg: warning_flags
284 if cc.has_argument(arg)
285 add_project_arguments(arg, language: 'c')
289 # set other values pulled from the build options
290 dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports'))
291 dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
292 dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp'))
293 # values which have defaults which may be overridden
294 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
295 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
296 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
297 if dpdk_conf.get('RTE_ARCH_64')
298 dpdk_conf.set('RTE_MAX_MEM_MB', 524288)
299 else # for 32-bit we need smaller reserved memory areas
300 dpdk_conf.set('RTE_MAX_MEM_MB', 2048)
304 compile_time_cpuflags = []
306 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
308 # apply cross-specific options
309 if meson.is_cross_build()
310 # configure RTE_MAX_LCORE and RTE_MAX_NUMA_NODES from cross file
311 cross_max_lcores = meson.get_cross_property('max_lcores', 0)
312 if cross_max_lcores != 0
313 message('Setting RTE_MAX_LCORE from cross file')
314 dpdk_conf.set('RTE_MAX_LCORE', cross_max_lcores)
316 cross_max_numa_nodes = meson.get_cross_property('max_numa_nodes', 0)
317 if cross_max_numa_nodes != 0
318 message('Setting RTE_MAX_NUMA_NODES from cross file')
319 dpdk_conf.set('RTE_MAX_NUMA_NODES', cross_max_numa_nodes)
323 max_lcores = get_option('max_lcores')
324 if max_lcores == 'detect'
325 # discovery makes sense only for non-cross builds
326 if meson.is_cross_build()
327 error('Discovery of max_lcores is not supported for cross-compilation.')
329 # overwrite the default value with discovered values
330 max_lcores = run_command(get_cpu_count_cmd).stdout().to_int()
332 # DPDK must be built for at least 2 cores
333 if max_lcores < min_lcores
334 message('Found less than @0@ cores, building for @0@ cores'.format(min_lcores))
335 max_lcores = min_lcores
337 message('Found @0@ cores'.format(max_lcores))
339 dpdk_conf.set('RTE_MAX_LCORE', max_lcores)
340 elif max_lcores != 'default'
341 # overwrite the default value from arch_subdir with user input
342 dpdk_conf.set('RTE_MAX_LCORE', max_lcores.to_int())
345 max_numa_nodes = get_option('max_numa_nodes')
346 if max_numa_nodes == 'detect'
347 # discovery makes sense only for non-cross builds
348 if meson.is_cross_build()
349 error('Discovery of max_numa_nodes not supported for cross-compilation.')
351 # overwrite the default value with discovered values
352 max_numa_nodes = run_command(get_numa_count_cmd).stdout().to_int()
353 message('Found @0@ numa nodes'.format(max_numa_nodes))
354 dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes)
355 elif max_numa_nodes != 'default'
356 # overwrite the default value from arch_subdir with user input
357 dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes.to_int())
360 # check that CPU and NUMA counts are set
361 if not dpdk_conf.has('RTE_MAX_LCORE')
362 error('Number of CPU cores not specified.')
364 if not dpdk_conf.has('RTE_MAX_NUMA_NODES')
365 error('Number of NUMA nodes not specified.')
368 # set the install path for the drivers
369 dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path)
371 install_headers(['rte_config.h'],
372 subdir: get_option('include_subdir_arch'))
374 # enable VFIO only if it is linux OS
375 dpdk_conf.set('RTE_EAL_VFIO', is_linux)
377 # specify -D_GNU_SOURCE unconditionally
378 add_project_arguments('-D_GNU_SOURCE', language: 'c')
380 # specify -D__BSD_VISIBLE for FreeBSD
382 add_project_arguments('-D__BSD_VISIBLE', language: 'c')
386 # VirtualAlloc2() is available since Windows 10 / Server 2019.
387 # It's essential for EAL, so we don't support older versions.
388 add_project_arguments('-D_WIN32_WINNT=0x0A00', language: 'c')
390 # Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting.
391 if cc.get_id() == 'gcc'
392 add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c')
395 # Disable secure CRT deprecated warnings for clang
396 if cc.get_id() == 'clang'
397 add_project_arguments('-D_CRT_SECURE_NO_WARNINGS', language: 'c')
401 if get_option('b_lto')
402 if cc.has_argument('-ffat-lto-objects')
403 add_project_arguments('-ffat-lto-objects', language: 'c')
405 error('compiler does not support fat LTO objects - please turn LTO off')
407 # workaround for gcc bug 81440
408 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0')
409 add_project_arguments('-Wno-lto-type-mismatch', language: 'c')
410 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c')
414 if get_option('default_library') == 'both'
416 Unsupported value "both" for "default_library" option.
418 NOTE: DPDK always builds both shared and static libraries. Please set
419 "default_library" to either "static" or "shared" to select default linkage
420 for apps and any examples.''')