drivers/meson.build

   1 # SPDX-License-Identifier: BSD-3-Clause
   2 # Copyright(c) 2017-2019 Intel Corporation
   3
   4 # Defines the order of dependencies evaluation
   5 subdirs = [
   6         'common',
   7         'bus',
   8         'common/mlx5', # depends on bus.
   9         'mempool', # depends on common and bus.
  10         'net',     # depends on common, bus, mempool
  11         'raw',     # depends on common, bus and net.
  12         'crypto',  # depends on common, bus and mempool (net in future).
  13         'compress', # depends on common, bus, mempool.
  14         'regex', # depends on common, bus, regexdev.
  15         'vdpa',    # depends on common, bus and mempool.
  16         'event',   # depends on common, bus, mempool and net.
  17         'baseband', # depends on common and bus.
  18 ]
  19
  20 disabled_drivers = run_command(list_dir_globs, get_option('disable_drivers'),
  21                 ).stdout().split()
  22
  23 default_cflags = machine_args
  24 default_cflags += ['-DALLOW_EXPERIMENTAL_API']
  25 default_cflags += ['-DALLOW_INTERNAL_API']
  26
  27 if cc.has_argument('-Wno-format-truncation')
  28         default_cflags += '-Wno-format-truncation'
  29 endif
  30
  31 foreach subpath:subdirs
  32         drivers = []
  33         std_deps = []
  34         config_flag_fmt = '' # format string used to set the value in dpdk_conf
  35         driver_name_fmt = '' # format string for driver name, used to name
  36                              # the library, the dependency and to find the
  37                              # version file for linking
  38
  39         # subpath can be either "class" or "class/driver"
  40         if subpath.contains('/')
  41                 driver_path = subpath.split('/')
  42                 class = driver_path[0]
  43                 drivers += driver_path[1]
  44         else
  45                 class = subpath
  46                 subdir(class)
  47         endif
  48
  49         # save class name on first occurrence
  50         if not dpdk_driver_classes.contains(class)
  51                 dpdk_driver_classes += class
  52         endif
  53         # get already enabled drivers of the same class
  54         enabled_drivers = get_variable(class + '_drivers', [])
  55
  56         foreach drv:drivers
  57                 drv_path = join_paths(class, drv)
  58
  59                 # set up empty variables used for build
  60                 build = true # set to false to disable, e.g. missing deps
  61                 reason = '<unknown reason>' # set if build == false to explain
  62                 name = drv
  63                 fmt_name = ''
  64                 sources = []
  65                 objs = []
  66                 cflags = default_cflags
  67                 includes = [include_directories(drv_path)]
  68                 # set up internal deps. Drivers can append/override as necessary
  69                 deps = std_deps
  70                 # ext_deps: Stores external library dependency got
  71                 # using dependency() (preferred) or find_library().
  72                 # For the find_library() case (but not with dependency()) we also
  73                 # need to specify the "-l" flags in pkgconfig_extra_libs variable
  74                 # too, so that it can be reflected in the pkgconfig output for
  75                 # static builds.
  76                 ext_deps = []
  77                 pkgconfig_extra_libs = []
  78
  79                 if disabled_drivers.contains(drv_path)
  80                         build = false
  81                         reason = 'Explicitly disabled via build config'
  82                 else
  83                         # pull in driver directory which should update all the local variables
  84                         subdir(drv_path)
  85                 endif
  86
  87                 if build
  88                         # get dependency objs from strings
  89                         shared_deps = ext_deps
  90                         static_deps = ext_deps
  91                         foreach d:deps
  92                                 if not is_variable('shared_rte_' + d)
  93                                         build = false
  94                                         reason = 'Missing internal dependency, "@0@"'.format(d)
  95                                         message('Disabling @1@ [@2@]: missing internal dependency "@0@"'
  96                                                         .format(d, name, 'drivers/' + drv_path))
  97                                 else
  98                                         shared_deps += [get_variable('shared_rte_' + d)]
  99                                         static_deps += [get_variable('static_rte_' + d)]
 100                                 endif
 101                         endforeach
 102                 endif
 103
 104                 if not build
 105                         # some driver directories are placeholders which
 106                         # are never built, so we allow suppression of the
 107                         # component disable printout in those cases
 108                         if reason != ''
 109                                 dpdk_drvs_disabled += drv_path
 110                                 set_variable(drv_path.underscorify() +
 111                                                 '_disable_reason', reason)
 112                         endif
 113                 else
 114                         enabled_drivers += name
 115
 116                         if fmt_name == ''
 117                                 fmt_name = name
 118                         endif
 119                         dpdk_conf.set(config_flag_fmt.format(fmt_name.to_upper()),1)
 120                         lib_name = driver_name_fmt.format(fmt_name)
 121
 122                         dpdk_extra_ldflags += pkgconfig_extra_libs
 123
 124                         # generate pmdinfo sources by building a temporary
 125                         # lib and then running pmdinfogen on the contents of
 126                         # that lib. The final lib reuses the object files and
 127                         # adds in the new source file.
 128                         if not is_windows
 129                                 out_filename = lib_name + '.pmd.c'
 130                                 tmp_lib = static_library('tmp_' + lib_name,
 131                                                 sources,
 132                                                 include_directories: includes,
 133                                                 dependencies: static_deps,
 134                                                 c_args: cflags)
 135                                 objs += tmp_lib.extract_all_objects()
 136                                 sources = custom_target(out_filename,
 137                                                 command: [pmdinfo, tmp_lib.full_path(),
 138                                                         '@OUTPUT@', pmdinfogen],
 139                                                 output: out_filename,
 140                                                 depends: [pmdinfogen, tmp_lib])
 141                         endif
 142
 143                         # now build the static driver
 144                         static_lib = static_library(lib_name,
 145                                 sources,
 146                                 objects: objs,
 147                                 include_directories: includes,
 148                                 dependencies: static_deps,
 149                                 c_args: cflags,
 150                                 install: true)
 151
 152                         # now build the shared driver
 153                         version_map = '@0@/@1@/@2@_version.map'.format(
 154                                         meson.current_source_dir(),
 155                                         drv_path, lib_name)
 156                         implib = 'lib' + lib_name + '.dll.a'
 157
 158                         def_file = custom_target(lib_name + '_def',
 159                                 command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
 160                                 input: version_map,
 161                                 output: '@0@_exports.def'.format(lib_name))
 162
 163                         mingw_map = custom_target(lib_name + '_mingw',
 164                                 command: [map_to_win_cmd, '@INPUT@', '@OUTPUT@'],
 165                                 input: version_map,
 166                                 output: '@0@_mingw.map'.format(lib_name))
 167
 168                         lk_deps = [version_map, def_file, mingw_map]
 169                         if is_windows
 170                                 if is_ms_linker
 171                                         lk_args = ['-Wl,/def:' + def_file.full_path(),
 172                                                 '-Wl,/implib:drivers\\' + implib]
 173                                 else
 174                                         lk_args = ['-Wl,--version-script=' + mingw_map.full_path()]
 175                                 endif
 176                         else
 177                                 lk_args = ['-Wl,--version-script=' + version_map]
 178                                 # on unix systems check the output of the
 179                                 # check-symbols.sh script, using it as a
 180                                 # dependency of the .so build
 181                                 lk_deps += custom_target(lib_name + '.sym_chk',
 182                                         command: [check_symbols,
 183                                                 version_map, '@INPUT@'],
 184                                         capture: true,
 185                                         input: static_lib,
 186                                         output: lib_name + '.sym_chk')
 187                         endif
 188
 189                         shared_lib = shared_library(lib_name,
 190                                 sources,
 191                                 objects: objs,
 192                                 include_directories: includes,
 193                                 dependencies: shared_deps,
 194                                 c_args: cflags,
 195                                 link_args: lk_args,
 196                                 link_depends: lk_deps,
 197                                 version: abi_version,
 198                                 soversion: so_version,
 199                                 install: true,
 200                                 install_dir: driver_install_path)
 201
 202                         # create a dependency object and add it to the global dictionary so
 203                         # testpmd or other built-in apps can find it if necessary
 204                         shared_dep = declare_dependency(link_with: shared_lib,
 205                                         include_directories: includes,
 206                                         dependencies: shared_deps)
 207                         static_dep = declare_dependency(
 208                                         include_directories: includes,
 209                                         dependencies: static_deps)
 210
 211                         dpdk_drivers += static_lib
 212
 213                         set_variable('shared_@0@'.format(lib_name), shared_dep)
 214                         set_variable('static_@0@'.format(lib_name), static_dep)
 215                         dependency_name = ''.join(lib_name.split('rte_'))
 216                         message('drivers/@0@: Defining dependency "@1@"'.format(
 217                                         drv_path, dependency_name))
 218                 endif # build
 219         endforeach
 220
 221         set_variable(class + '_drivers', enabled_drivers)
 222 endforeach