4d8f842ab806f21269c22d9eb6c994985766a8d9
[dpdk.git] / meson.build
1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2017-2019 Intel Corporation
3
4 if is_windows
5         subdir_done()
6 endif
7
8 # Defines the order in which the drivers are buit.
9 dpdk_driver_classes = ['common',
10                'bus',
11                'mempool', # depends on common and bus.
12                'net',     # depends on common, bus, mempool
13                'raw',     # depends on common, bus and net.
14                'crypto',  # depends on common, bus and mempool (net in future).
15                'compress', # depends on common, bus, mempool.
16                'vdpa',    # depends on common, bus and mempool.
17                'event',   # depends on common, bus, mempool and net.
18                'baseband'] # depends on common and bus.
19
20 disabled_drivers = run_command(list_dir_globs, get_option('disable_drivers'),
21                 ).stdout().split()
22
23 default_cflags = machine_args + ['-DALLOW_EXPERIMENTAL_API']
24 if cc.has_argument('-Wno-format-truncation')
25         default_cflags += '-Wno-format-truncation'
26 endif
27
28 foreach class:dpdk_driver_classes
29         drivers = []
30         std_deps = []
31         config_flag_fmt = '' # format string used to set the value in dpdk_conf
32         driver_name_fmt = '' # format string for driver name, used to name
33                              # the library, the dependency and to find the
34                              # version file for linking
35
36         subdir(class)
37         class_drivers = []
38
39         foreach drv:drivers
40                 drv_path = join_paths(class, drv)
41
42                 # set up empty variables used for build
43                 build = true # set to false to disable, e.g. missing deps
44                 reason = '<unknown reason>' # set if build == false to explain
45                 name = drv
46                 fmt_name = ''
47                 sources = []
48                 objs = []
49                 cflags = default_cflags
50                 includes = [include_directories(drv_path)]
51                 # set up internal deps. Drivers can append/override as necessary
52                 deps = std_deps
53                 # ext_deps: Stores external library dependency got
54                 # using dependency() (preferred) or find_library().
55                 # For the find_library() case (but not with dependency()) we also
56                 # need to specify the "-l" flags in pkgconfig_extra_libs variable
57                 # too, so that it can be reflected in the pkgconfig output for
58                 # static builds.
59                 ext_deps = []
60                 pkgconfig_extra_libs = []
61
62                 # pull in driver directory which should assign to each of the above
63                 subdir(drv_path)
64
65                 # skip disabled drivers. For meson 0.49 change this to use
66                 # "in" keyword
67                 foreach disable_path: disabled_drivers
68                         if drv_path == disable_path
69                                 build = false
70                                 reason = 'Explicitly disabled via build config'
71                         endif
72                 endforeach
73                 if build
74                         # get dependency objs from strings
75                         shared_deps = ext_deps
76                         static_deps = ext_deps
77                         foreach d:deps
78                                 if not is_variable('shared_rte_' + d)
79                                         build = false
80                                         reason = 'Missing internal dependency, "@0@"'.format(d)
81                                         message('Disabling @1@ [@2@]: missing internal dependency "@0@"'
82                                                         .format(d, name, 'drivers/' + drv_path))
83                                 else
84                                         shared_deps += [get_variable('shared_rte_' + d)]
85                                         static_deps += [get_variable('static_rte_' + d)]
86                                 endif
87                         endforeach
88                 endif
89
90                 if not build
91                         # some driver directories are placeholders which
92                         # are never built, so we allow suppression of the
93                         # component disable printout in those cases
94                         if reason != ''
95                                 dpdk_drvs_disabled += drv_path
96                                 set_variable(drv_path.underscorify() +
97                                                 '_disable_reason', reason)
98                         endif
99                 else
100                         class_drivers += name
101
102                         if fmt_name == ''
103                                 fmt_name = name
104                         endif
105                         dpdk_conf.set(config_flag_fmt.format(fmt_name.to_upper()),1)
106                         lib_name = driver_name_fmt.format(fmt_name)
107
108                         dpdk_extra_ldflags += pkgconfig_extra_libs
109
110                         # generate pmdinfo sources by building a temporary
111                         # lib and then running pmdinfogen on the contents of
112                         # that lib. The final lib reuses the object files and
113                         # adds in the new source file.
114                         out_filename = lib_name + '.pmd.c'
115                         tmp_lib = static_library('tmp_' + lib_name,
116                                         sources,
117                                         include_directories: includes,
118                                         dependencies: static_deps,
119                                         c_args: cflags)
120                         objs += tmp_lib.extract_all_objects()
121                         sources = custom_target(out_filename,
122                                         command: [pmdinfo, tmp_lib.full_path(),
123                                                 '@OUTPUT@', pmdinfogen],
124                                         output: out_filename,
125                                         depends: [pmdinfogen, tmp_lib])
126
127                         version_map = '@0@/@1@/@2@_version.map'.format(
128                                         meson.current_source_dir(),
129                                         drv_path, lib_name)
130
131                         is_experimental = run_command(is_experimental_cmd,
132                                 files(version_map)).returncode()
133
134                         if is_experimental != 0
135                                 lib_version = experimental_abi_version
136                                 so_version = experimental_so_version
137                         else
138                                 lib_version = abi_version
139                                 so_version = stable_so_version
140                         endif
141
142                         # now build the static driver
143                         static_lib = static_library(lib_name,
144                                 sources,
145                                 objects: objs,
146                                 include_directories: includes,
147                                 dependencies: static_deps,
148                                 c_args: cflags,
149                                 install: true)
150
151                         # now build the shared driver
152                         version_map = '@0@/@1@/@2@_version.map'.format(
153                                         meson.current_source_dir(),
154                                         drv_path, lib_name)
155                         implib = dir_name + '.dll.a'
156
157                         def_file = custom_target(lib_name + '_def',
158                                 command: [map_to_def_cmd, '@INPUT@', '@OUTPUT@'],
159                                 input: version_map,
160                                 output: '@0@_exports.def'.format(lib_name))
161                         lk_deps = [version_map, def_file]
162                         if is_windows
163                                 lk_args = ['-Wl,/def:' + def_file.full_path(),
164                                         '-Wl,/implib:lib\\' + implib]
165                         else
166                                 lk_args = ['-Wl,--version-script=' + version_map]
167                                 # on unix systems check the output of the
168                                 # experimental syms script, using it as a
169                                 # dependency of the .so build
170                                 lk_deps += custom_target(lib_name + '.exp_chk',
171                                         command: [check_experimental_syms,
172                                                 version_map, '@INPUT@'],
173                                         capture: true,
174                                         input: static_lib,
175                                         output: lib_name + '.exp_chk')
176                         endif
177
178                         shared_lib = shared_library(lib_name,
179                                 sources,
180                                 objects: objs,
181                                 include_directories: includes,
182                                 dependencies: shared_deps,
183                                 c_args: cflags,
184                                 link_args: lk_args,
185                                 link_depends: lk_deps,
186                                 version: lib_version,
187                                 soversion: so_version,
188                                 install: true,
189                                 install_dir: driver_install_path)
190
191                         # create a dependency object and add it to the global dictionary so
192                         # testpmd or other built-in apps can find it if necessary
193                         shared_dep = declare_dependency(link_with: shared_lib,
194                                         include_directories: includes,
195                                         dependencies: shared_deps)
196                         static_dep = declare_dependency(link_with: static_lib,
197                                         include_directories: includes,
198                                         dependencies: static_deps)
199
200                         dpdk_drivers += static_lib
201
202                         set_variable('shared_@0@'.format(lib_name), shared_dep)
203                         set_variable('static_@0@'.format(lib_name), static_dep)
204                         dependency_name = ''.join(lib_name.split('rte_'))
205                         message('drivers/@0@: Defining dependency "@1@"'.format(
206                                         drv_path, dependency_name))
207                 endif # build
208         endforeach
209
210         set_variable(class + '_drivers', class_drivers)
211 endforeach