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 # set the major version, which might be used by drivers and libraries
18 # depending on the configuration options
19 pver = meson.project_version().split('.')
20 major_version = '@0@.@1@'.format(pver.get(0), pver.get(1))
22 # extract all version information into the build configuration
23 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
24 dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int())
25 if pver.get(2).contains('-rc')
26 rc_ver = pver.get(2).split('-rc')
27 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int())
28 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc')
29 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int())
31 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int())
32 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '')
33 # for actual, non-rc releases, set the release value to 99 to ensure releases
34 # have higher version numbers than their respective release candidates
35 dpdk_conf.set('RTE_VER_RELEASE', 99)
38 pmd_subdir_opt = get_option('drivers_install_subdir')
39 if pmd_subdir_opt.contains('<VERSION>')
40 pmd_subdir_opt = major_version.join(pmd_subdir_opt.split('<VERSION>'))
42 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
43 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
45 # driver .so files often depend upon the bus drivers for their connect bus,
46 # e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
47 # to be in the library path, so symlink the drivers from the main lib directory.
48 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
52 # set the machine type and cflags for it
53 if meson.is_cross_build()
54 machine = host_machine.cpu()
56 machine = get_option('machine')
59 # machine type 'default' is special, it defaults to the per arch agreed common
60 # minimal baseline needed for DPDK.
61 # That might not be the most optimized, but the most portable version while
62 # still being able to support the CPU features required for DPDK.
63 # This can be bumped up by the DPDK project, but it can never be an
64 # invariant like 'native'
65 if machine == 'default'
66 if host_machine.cpu_family().startswith('x86')
67 # matches the old pre-meson build systems default
69 elif host_machine.cpu_family().startswith('arm')
71 elif host_machine.cpu_family().startswith('aarch')
72 # arm64 manages defaults in config/arm/meson.build
74 elif host_machine.cpu_family().startswith('ppc')
79 dpdk_conf.set('RTE_MACHINE', machine)
82 # ppc64 does not support -march= at all, use -mcpu and -mtune for that
83 if host_machine.cpu_family().startswith('ppc')
84 machine_args += '-mcpu=' + machine
85 machine_args += '-mtune=' + machine
87 machine_args += '-march=' + machine
90 toolchain = cc.get_id()
91 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
92 dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1)
94 dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
96 add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
99 add_project_link_arguments('-pthread', language: 'c')
100 dpdk_extra_ldflags += '-pthread'
102 # on some OS, maths functions are in a separate library
103 if cc.find_library('libm', required : false).found()
104 # some libs depend on maths lib
105 add_project_link_arguments('-lm', language: 'c')
106 dpdk_extra_ldflags += '-lm'
109 # for linux link against dl, for bsd execinfo
113 link_lib = 'execinfo'
118 # if link_lib is empty, do not add it to project properties
120 add_project_link_arguments('-l' + link_lib, language: 'c')
121 dpdk_extra_ldflags += '-l' + link_lib
124 # check for libraries used in multiple places in DPDK
126 numa_dep = cc.find_library('numa', required: false)
127 if numa_dep.found() and cc.has_header('numaif.h')
128 dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
130 add_project_link_arguments('-lnuma', language: 'c')
131 dpdk_extra_ldflags += '-lnuma'
135 libbsd = dependency('libbsd', required: false)
137 dpdk_conf.set('RTE_USE_LIBBSD', 1)
141 pcap_dep = dependency('pcap', required: false)
143 # pcap got a pkg-config file only in 1.9.0 and before that meson uses
144 # an internal pcap-config finder, which is not compatible with
145 # cross-compilation, so try to fallback to find_library
146 pcap_dep = cc.find_library('pcap', required: false)
148 if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
149 dpdk_conf.set('RTE_PORT_PCAP', 1)
150 dpdk_extra_ldflags += '-lpcap'
153 # add -include rte_config to cflags
154 add_project_arguments('-include', 'rte_config.h', language: 'c')
156 # enable extra warnings and disable any unwanted warnings
158 # -Wall is added by meson by default, so add -Wextra only
161 # additional warnings in alphabetical order
164 '-Wformat-nonliteral',
166 '-Wmissing-declarations',
167 '-Wmissing-prototypes',
169 '-Wold-style-definition',
172 '-Wstrict-prototypes',
176 # globally disabled warnings
177 '-Wno-address-of-packed-member',
178 '-Wno-packed-not-aligned',
179 '-Wno-missing-field-initializers'
181 if not dpdk_conf.get('RTE_ARCH_64')
182 # for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!!
183 warning_flags += '-Wno-pointer-to-int-cast'
185 foreach arg: warning_flags
186 if cc.has_argument(arg)
187 add_project_arguments(arg, language: 'c')
191 # set other values pulled from the build options
192 dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores'))
193 dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes'))
194 dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports'))
195 dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
196 # values which have defaults which may be overridden
197 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
198 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
199 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
202 compile_time_cpuflags = []
203 if host_machine.cpu_family().startswith('x86')
205 elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().startswith('aarch')
207 elif host_machine.cpu_family().startswith('ppc')
208 arch_subdir = 'ppc_64'
211 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
213 # set the install path for the drivers
214 dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path)
216 install_headers('rte_config.h', subdir: get_option('include_subdir_arch'))
218 # enable VFIO only if it is linux OS
219 dpdk_conf.set('RTE_EAL_VFIO', is_linux)
221 # specify -D_GNU_SOURCE unconditionally
222 add_project_arguments('-D_GNU_SOURCE', language: 'c')
224 # specify -D__BSD_VISIBLE for FreeBSD
226 add_project_arguments('-D__BSD_VISIBLE', language: 'c')
229 if get_option('b_lto')
230 if cc.has_argument('-ffat-lto-objects')
231 add_project_arguments('-ffat-lto-objects', language: 'c')
233 error('compiler does not support fat LTO objects - please turn LTO off')
235 # workaround for gcc bug 81440
236 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0')
237 add_project_arguments('-Wno-lto-type-mismatch', language: 'c')
238 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c')