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))
21 abi_version = run_command(find_program('cat', 'more'),
22 abi_version_file).stdout().strip()
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
32 abi_va = abi_version.split('.')
33 stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
34 experimental_abi_version = '0.' + ''.join(abi_va)
35 experimental_so_version = '0.' + ''.join(stable_so_version.split('.'))
37 # extract all version information into the build configuration
38 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
39 dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int())
40 if 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())
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)
53 pmd_subdir_opt = get_option('drivers_install_subdir')
54 if pmd_subdir_opt.contains('<VERSION>')
55 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>'))
57 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
58 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
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.
63 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
67 # set the machine type and cflags for it
68 if meson.is_cross_build()
69 machine = host_machine.cpu()
71 machine = get_option('machine')
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'
80 if machine == 'default'
81 if host_machine.cpu_family().startswith('x86')
82 # matches the old pre-meson build systems default
84 elif host_machine.cpu_family().startswith('arm')
86 elif host_machine.cpu_family().startswith('aarch')
87 # arm64 manages defaults in config/arm/meson.build
89 elif host_machine.cpu_family().startswith('ppc')
94 dpdk_conf.set('RTE_MACHINE', machine)
97 # ppc64 does not support -march= at all, use -mcpu and -mtune for that
98 if host_machine.cpu_family().startswith('ppc')
99 machine_args += '-mcpu=' + machine
100 machine_args += '-mtune=' + machine
102 machine_args += '-march=' + machine
105 toolchain = cc.get_id()
106 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
107 dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1)
109 dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
111 add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
114 add_project_link_arguments('-pthread', language: 'c')
115 dpdk_extra_ldflags += '-pthread'
117 # on some OS, maths functions are in a separate library
118 if cc.find_library('libm', required : false).found()
119 # some libs depend on maths lib
120 add_project_link_arguments('-lm', language: 'c')
121 dpdk_extra_ldflags += '-lm'
124 # for linux link against dl, for bsd execinfo
128 link_lib = 'execinfo'
133 # if link_lib is empty, do not add it to project properties
135 add_project_link_arguments('-l' + link_lib, language: 'c')
136 dpdk_extra_ldflags += '-l' + link_lib
139 # check for libraries used in multiple places in DPDK
141 numa_dep = cc.find_library('numa', required: false)
142 if numa_dep.found() and cc.has_header('numaif.h')
143 dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
145 add_project_link_arguments('-lnuma', language: 'c')
146 dpdk_extra_ldflags += '-lnuma'
150 libbsd = dependency('libbsd', required: false)
152 dpdk_conf.set('RTE_USE_LIBBSD', 1)
156 pcap_dep = dependency('pcap', required: false)
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)
163 if 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'
168 # add -include rte_config to cflags
169 add_project_arguments('-include', 'rte_config.h', language: 'c')
171 # enable extra warnings and disable any unwanted warnings
173 # -Wall is added by meson by default, so add -Wextra only
176 # additional warnings in alphabetical order
179 '-Wformat-nonliteral',
181 '-Wmissing-declarations',
182 '-Wmissing-prototypes',
184 '-Wold-style-definition',
187 '-Wstrict-prototypes',
191 # globally disabled warnings
192 '-Wno-address-of-packed-member',
193 '-Wno-packed-not-aligned',
194 '-Wno-missing-field-initializers'
196 if 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'
200 foreach arg: warning_flags
201 if cc.has_argument(arg)
202 add_project_arguments(arg, language: 'c')
206 # set other values pulled from the build options
207 dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores'))
208 dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes'))
209 dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports'))
210 dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
211 # values which have defaults which may be overridden
212 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
213 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
214 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
217 compile_time_cpuflags = []
218 if host_machine.cpu_family().startswith('x86')
220 elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().startswith('aarch')
222 elif host_machine.cpu_family().startswith('ppc')
223 arch_subdir = 'ppc_64'
226 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
228 # set the install path for the drivers
229 dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path)
231 install_headers('rte_config.h', subdir: get_option('include_subdir_arch'))
233 # enable VFIO only if it is linux OS
234 dpdk_conf.set('RTE_EAL_VFIO', is_linux)
236 # specify -D_GNU_SOURCE unconditionally
237 add_project_arguments('-D_GNU_SOURCE', language: 'c')
239 # specify -D__BSD_VISIBLE for FreeBSD
241 add_project_arguments('-D__BSD_VISIBLE', language: 'c')
244 if get_option('b_lto')
245 if cc.has_argument('-ffat-lto-objects')
246 add_project_arguments('-ffat-lto-objects', language: 'c')
248 error('compiler does not support fat LTO objects - please turn LTO off')
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')