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()
23 # experimental libraries are versioned as 0.majorminor versions, e.g. 0.201
24 ever = abi_version.split('.')
25 experimental_abi_version = '0.@0@@1@'.format(ever.get(0), ever.get(1))
27 # extract all version information into the build configuration
28 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
29 dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int())
30 if pver.get(2).contains('-rc')
31 rc_ver = pver.get(2).split('-rc')
32 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int())
33 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc')
34 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int())
36 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int())
37 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '')
38 # for actual, non-rc releases, set the release value to 99 to ensure releases
39 # have higher version numbers than their respective release candidates
40 dpdk_conf.set('RTE_VER_RELEASE', 99)
43 pmd_subdir_opt = get_option('drivers_install_subdir')
44 if pmd_subdir_opt.contains('<VERSION>')
45 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>'))
47 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
48 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
50 # driver .so files often depend upon the bus drivers for their connect bus,
51 # e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
52 # to be in the library path, so symlink the drivers from the main lib directory.
53 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
57 # set the machine type and cflags for it
58 if meson.is_cross_build()
59 machine = host_machine.cpu()
61 machine = get_option('machine')
64 # machine type 'default' is special, it defaults to the per arch agreed common
65 # minimal baseline needed for DPDK.
66 # That might not be the most optimized, but the most portable version while
67 # still being able to support the CPU features required for DPDK.
68 # This can be bumped up by the DPDK project, but it can never be an
69 # invariant like 'native'
70 if machine == 'default'
71 if host_machine.cpu_family().startswith('x86')
72 # matches the old pre-meson build systems default
74 elif host_machine.cpu_family().startswith('arm')
76 elif host_machine.cpu_family().startswith('aarch')
77 # arm64 manages defaults in config/arm/meson.build
79 elif host_machine.cpu_family().startswith('ppc')
84 dpdk_conf.set('RTE_MACHINE', machine)
87 # ppc64 does not support -march= at all, use -mcpu and -mtune for that
88 if host_machine.cpu_family().startswith('ppc')
89 machine_args += '-mcpu=' + machine
90 machine_args += '-mtune=' + machine
92 machine_args += '-march=' + machine
95 toolchain = cc.get_id()
96 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
97 dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1)
99 dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
101 add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
104 add_project_link_arguments('-pthread', language: 'c')
105 dpdk_extra_ldflags += '-pthread'
107 # on some OS, maths functions are in a separate library
108 if cc.find_library('libm', required : false).found()
109 # some libs depend on maths lib
110 add_project_link_arguments('-lm', language: 'c')
111 dpdk_extra_ldflags += '-lm'
114 # for linux link against dl, for bsd execinfo
118 link_lib = 'execinfo'
123 # if link_lib is empty, do not add it to project properties
125 add_project_link_arguments('-l' + link_lib, language: 'c')
126 dpdk_extra_ldflags += '-l' + link_lib
129 # check for libraries used in multiple places in DPDK
131 numa_dep = cc.find_library('numa', required: false)
132 if numa_dep.found() and cc.has_header('numaif.h')
133 dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
135 add_project_link_arguments('-lnuma', language: 'c')
136 dpdk_extra_ldflags += '-lnuma'
140 libbsd = dependency('libbsd', required: false)
142 dpdk_conf.set('RTE_USE_LIBBSD', 1)
146 pcap_dep = dependency('pcap', required: false)
148 # pcap got a pkg-config file only in 1.9.0 and before that meson uses
149 # an internal pcap-config finder, which is not compatible with
150 # cross-compilation, so try to fallback to find_library
151 pcap_dep = cc.find_library('pcap', required: false)
153 if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
154 dpdk_conf.set('RTE_PORT_PCAP', 1)
155 dpdk_extra_ldflags += '-lpcap'
158 # add -include rte_config to cflags
159 add_project_arguments('-include', 'rte_config.h', language: 'c')
161 # enable extra warnings and disable any unwanted warnings
163 # -Wall is added by meson by default, so add -Wextra only
166 # additional warnings in alphabetical order
169 '-Wformat-nonliteral',
171 '-Wmissing-declarations',
172 '-Wmissing-prototypes',
174 '-Wold-style-definition',
177 '-Wstrict-prototypes',
181 # globally disabled warnings
182 '-Wno-address-of-packed-member',
183 '-Wno-packed-not-aligned',
184 '-Wno-missing-field-initializers'
186 if not dpdk_conf.get('RTE_ARCH_64')
187 # for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!!
188 warning_flags += '-Wno-pointer-to-int-cast'
190 foreach arg: warning_flags
191 if cc.has_argument(arg)
192 add_project_arguments(arg, language: 'c')
196 # set other values pulled from the build options
197 dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores'))
198 dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes'))
199 dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports'))
200 dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
201 # values which have defaults which may be overridden
202 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
203 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
204 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
207 compile_time_cpuflags = []
208 if host_machine.cpu_family().startswith('x86')
210 elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().startswith('aarch')
212 elif host_machine.cpu_family().startswith('ppc')
213 arch_subdir = 'ppc_64'
216 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
218 # set the install path for the drivers
219 dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path)
221 install_headers('rte_config.h', subdir: get_option('include_subdir_arch'))
223 # enable VFIO only if it is linux OS
224 dpdk_conf.set('RTE_EAL_VFIO', is_linux)
226 # specify -D_GNU_SOURCE unconditionally
227 add_project_arguments('-D_GNU_SOURCE', language: 'c')
229 # specify -D__BSD_VISIBLE for FreeBSD
231 add_project_arguments('-D__BSD_VISIBLE', language: 'c')
234 if get_option('b_lto')
235 if cc.has_argument('-ffat-lto-objects')
236 add_project_arguments('-ffat-lto-objects', language: 'c')
238 error('compiler does not support fat LTO objects - please turn LTO off')
240 # workaround for gcc bug 81440
241 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0')
242 add_project_arguments('-Wno-lto-type-mismatch', language: 'c')
243 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c')