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'),
26 abi_version_file).stdout().strip()
28 # Regular 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 # Experimental libraries have soname with '0.major'
31 # and the filename suffix as 0.majorminor versions,
32 # e.g. v20.1 => librte_stable.so.20.1, librte_experimental.so.0.201
33 # sonames => librte_stable.so.20, librte_experimental.so.0.20
34 # e.g. v20.0.1 => librte_stable.so.20.0.1, librte_experimental.so.0.2001
35 # sonames => librte_stable.so.20.0, librte_experimental.so.0.200
36 abi_va = abi_version.split('.')
37 stable_so_version = abi_va.length() == 2 ? abi_va[0] : abi_va[0] + '.' + abi_va[1]
38 experimental_abi_version = '0.' + abi_va[0] + abi_va[1] + '.' + abi_va[2]
39 experimental_so_version = experimental_abi_version
41 # extract all version information into the build configuration
42 dpdk_conf.set('RTE_VER_YEAR', pver.get(0).to_int())
43 dpdk_conf.set('RTE_VER_MONTH', pver.get(1).to_int())
44 if pver.get(2).contains('-rc')
45 rc_ver = pver.get(2).split('-rc')
46 dpdk_conf.set('RTE_VER_MINOR', rc_ver.get(0).to_int())
47 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '-rc')
48 dpdk_conf.set('RTE_VER_RELEASE', rc_ver.get(1).to_int())
50 dpdk_conf.set('RTE_VER_MINOR', pver.get(2).to_int())
51 dpdk_conf.set_quoted('RTE_VER_SUFFIX', '')
52 # for actual, non-rc releases, set the release value to 99 to ensure releases
53 # have higher version numbers than their respective release candidates
54 dpdk_conf.set('RTE_VER_RELEASE', 99)
57 pmd_subdir_opt = get_option('drivers_install_subdir')
58 if pmd_subdir_opt.contains('<VERSION>')
59 pmd_subdir_opt = abi_version.join(pmd_subdir_opt.split('<VERSION>'))
61 driver_install_path = join_paths(get_option('libdir'), pmd_subdir_opt)
62 eal_pmd_path = join_paths(get_option('prefix'), driver_install_path)
64 # driver .so files often depend upon the bus drivers for their connect bus,
65 # e.g. ixgbe depends on librte_bus_pci. This means that the bus drivers need
66 # to be in the library path, so symlink the drivers from the main lib directory.
67 meson.add_install_script('../buildtools/symlink-drivers-solibs.sh',
71 # set the machine type and cflags for it
72 if meson.is_cross_build()
73 machine = host_machine.cpu()
75 machine = get_option('machine')
78 # machine type 'default' is special, it defaults to the per arch agreed common
79 # minimal baseline needed for DPDK.
80 # That might not be the most optimized, but the most portable version while
81 # still being able to support the CPU features required for DPDK.
82 # This can be bumped up by the DPDK project, but it can never be an
83 # invariant like 'native'
84 if machine == 'default'
85 if host_machine.cpu_family().startswith('x86')
86 # matches the old pre-meson build systems default
88 elif host_machine.cpu_family().startswith('arm')
90 elif host_machine.cpu_family().startswith('aarch')
91 # arm64 manages defaults in config/arm/meson.build
93 elif host_machine.cpu_family().startswith('ppc')
98 dpdk_conf.set('RTE_MACHINE', machine)
101 # ppc64 does not support -march= at all, use -mcpu and -mtune for that
102 if host_machine.cpu_family().startswith('ppc')
103 machine_args += '-mcpu=' + machine
104 machine_args += '-mtune=' + machine
106 machine_args += '-march=' + machine
109 toolchain = cc.get_id()
110 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
111 dpdk_conf.set('RTE_TOOLCHAIN_' + toolchain.to_upper(), 1)
113 dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
116 add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
119 # use pthreads if available for the platform
121 add_project_link_arguments('-pthread', language: 'c')
122 dpdk_extra_ldflags += '-pthread'
125 # on some OS, maths functions are in a separate library
126 if cc.find_library('m', required : false).found()
127 # some libs depend on maths lib
128 add_project_link_arguments('-lm', language: 'c')
129 dpdk_extra_ldflags += '-lm'
132 # for linux link against dl, for bsd execinfo
136 link_lib = 'execinfo'
141 # if link_lib is empty, do not add it to project properties
143 add_project_link_arguments('-l' + link_lib, language: 'c')
144 dpdk_extra_ldflags += '-l' + link_lib
147 # check for libraries used in multiple places in DPDK
149 numa_dep = cc.find_library('numa', required: false)
150 if numa_dep.found() and cc.has_header('numaif.h')
151 dpdk_conf.set10('RTE_HAS_LIBNUMA', true)
153 add_project_link_arguments('-lnuma', language: 'c')
154 dpdk_extra_ldflags += '-lnuma'
158 libbsd = dependency('libbsd', required: false)
160 dpdk_conf.set('RTE_USE_LIBBSD', 1)
164 pcap_dep = dependency('pcap', required: false)
166 # pcap got a pkg-config file only in 1.9.0 and before that meson uses
167 # an internal pcap-config finder, which is not compatible with
168 # cross-compilation, so try to fallback to find_library
169 pcap_dep = cc.find_library('pcap', required: false)
171 if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
172 dpdk_conf.set('RTE_PORT_PCAP', 1)
173 dpdk_extra_ldflags += '-lpcap'
176 # for clang 32-bit compiles we need libatomic for 64-bit atomic ops
177 if cc.get_id() == 'clang' and dpdk_conf.get('RTE_ARCH_64') == false
178 atomic_dep = cc.find_library('atomic', required: true)
179 add_project_link_arguments('-latomic', language: 'c')
180 dpdk_extra_ldflags += '-latomic'
183 # add -include rte_config to cflags
184 add_project_arguments('-include', 'rte_config.h', language: 'c')
186 # enable extra warnings and disable any unwanted warnings
188 # -Wall is added by meson by default, so add -Wextra only
191 # additional warnings in alphabetical order
194 '-Wformat-nonliteral',
196 '-Wmissing-declarations',
197 '-Wmissing-prototypes',
199 '-Wold-style-definition',
202 '-Wstrict-prototypes',
206 # globally disabled warnings
207 '-Wno-address-of-packed-member',
208 '-Wno-packed-not-aligned',
209 '-Wno-missing-field-initializers'
211 if cc.get_id() == 'gcc' and cc.version().version_compare('>=10.0')
212 # FIXME: Bugzilla 396
213 warning_flags += '-Wno-zero-length-bounds'
215 if not dpdk_conf.get('RTE_ARCH_64')
216 # for 32-bit, don't warn about casting a 32-bit pointer to 64-bit int - it's fine!!
217 warning_flags += '-Wno-pointer-to-int-cast'
219 if cc.get_id() == 'intel'
220 warning_ids = [188, 2203, 2279, 2557, 3179, 3656]
221 foreach i:warning_ids
222 warning_flags += '-diag-disable=@0@'.format(i)
225 foreach arg: warning_flags
226 if cc.has_argument(arg)
227 add_project_arguments(arg, language: 'c')
231 # set other values pulled from the build options
232 dpdk_conf.set('RTE_MAX_LCORE', get_option('max_lcores'))
233 dpdk_conf.set('RTE_MAX_NUMA_NODES', get_option('max_numa_nodes'))
234 dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports'))
235 dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
236 dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp'))
237 # values which have defaults which may be overridden
238 dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
239 dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
240 dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true)
243 compile_time_cpuflags = []
245 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
247 # set the install path for the drivers
248 dpdk_conf.set_quoted('RTE_EAL_PMD_PATH', eal_pmd_path)
250 install_headers('rte_config.h', subdir: get_option('include_subdir_arch'))
252 # enable VFIO only if it is linux OS
253 dpdk_conf.set('RTE_EAL_VFIO', is_linux)
255 # specify -D_GNU_SOURCE unconditionally
256 add_project_arguments('-D_GNU_SOURCE', language: 'c')
258 # specify -D__BSD_VISIBLE for FreeBSD
260 add_project_arguments('-D__BSD_VISIBLE', language: 'c')
264 # VirtualAlloc2() is available since Windows 10 / Server 2016.
265 add_project_arguments('-D_WIN32_WINNT=0x0A00', language: 'c')
267 # Use MinGW-w64 stdio, because DPDK assumes ANSI-compliant formatting.
268 if cc.get_id() == 'gcc'
269 add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c')
272 # Contrary to docs, VirtualAlloc2() is exported by mincore.lib
273 # in Windows SDK, while MinGW exports it by advapi32.a.
275 add_project_link_arguments('-lmincore', language: 'c')
278 add_project_link_arguments('-ladvapi32', '-lsetupapi', language: 'c')
281 if get_option('b_lto')
282 if cc.has_argument('-ffat-lto-objects')
283 add_project_arguments('-ffat-lto-objects', language: 'c')
285 error('compiler does not support fat LTO objects - please turn LTO off')
287 # workaround for gcc bug 81440
288 if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0')
289 add_project_arguments('-Wno-lto-type-mismatch', language: 'c')
290 add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c')