drivers/meson.build

   1 # SPDX-License-Identifier: BSD-3-Clause
   2 # Copyright(c) 2017 Intel Corporation
   3
   4 # Defines the order in which the drivers are buit.
   5 dpdk_driver_classes = ['common',
   6                'bus',
   7                'mempool', # depends on common and bus.
   8                'net',     # depends on common, bus and mempool.
   9                'crypto',  # depends on common, bus and mempool (net in future).
  10                'compress', # depends on common, bus, mempool.
  11                'event',   # depends on common, bus, mempool and net.
  12                'baseband', # depends on common and bus.
  13                'raw']     # depends on common, bus, mempool, net and event.
  14
  15 default_cflags = machine_args
  16 if cc.has_argument('-Wno-format-truncation')
  17         default_cflags += '-Wno-format-truncation'
  18 endif
  19
  20 # specify -D_GNU_SOURCE unconditionally
  21 default_cflags += '-D_GNU_SOURCE'
  22
  23 foreach class:dpdk_driver_classes
  24         drivers = []
  25         std_deps = []
  26         config_flag_fmt = '' # format string used to set the value in dpdk_conf
  27         driver_name_fmt = '' # format string for driver name, used to name
  28                              # the library, the dependency and to find the
  29                              # version file for linking
  30
  31         subdir(class)
  32         class_drivers = []
  33
  34         foreach drv:drivers
  35                 drv_path = join_paths(class, drv)
  36
  37                 # set up empty variables used for build
  38                 build = true # set to false to disable, e.g. missing deps
  39                 name = drv
  40                 version = 1
  41                 allow_experimental_apis = false
  42                 sources = []
  43                 objs = []
  44                 cflags = default_cflags
  45                 includes = [include_directories(drv_path)]
  46                 # set up internal deps. Drivers can append/override as necessary
  47                 deps = std_deps
  48                 # ext_deps: Stores external library dependency got
  49                 # using dependency() (preferred) or find_library().
  50                 # For the find_library() case (but not with dependency()) we also
  51                 # need to specify the "-l" flags in pkgconfig_extra_libs variable
  52                 # too, so that it can be reflected in the pkgconfig output for
  53                 # static builds.
  54                 ext_deps = []
  55                 pkgconfig_extra_libs = []
  56
  57                 # pull in driver directory which should assign to each of the above
  58                 subdir(drv_path)
  59
  60                 if build
  61                         class_drivers += name
  62
  63                         dpdk_conf.set(config_flag_fmt.format(name.to_upper()),1)
  64                         lib_name = driver_name_fmt.format(name)
  65
  66                         if allow_experimental_apis
  67                                 cflags += '-DALLOW_EXPERIMENTAL_API'
  68                         endif
  69
  70                         # get dependency objs from strings
  71                         shared_objs = []
  72                         static_objs = []
  73                         foreach d:deps
  74                                 if not is_variable('shared_rte_' + d)
  75                                         error('Missing dependency ' + d +
  76                                                 ' for driver ' + lib_name)
  77                                 endif
  78                                 shared_objs += [get_variable('shared_rte_' + d)]
  79                                 static_objs += [get_variable('static_rte_' + d)]
  80                         endforeach
  81                         shared_objs += ext_deps
  82                         static_objs += ext_deps
  83                         dpdk_extra_ldflags += pkgconfig_extra_libs
  84
  85                         # generate pmdinfo sources by building a temporary
  86                         # lib and then running pmdinfogen on the contents of
  87                         # that lib. The final lib reuses the object files and
  88                         # adds in the new source file.
  89                         out_filename = lib_name + '.pmd.c'
  90                         tmp_lib = static_library('tmp_' + lib_name,
  91                                         sources,
  92                                         include_directories: includes,
  93                                         dependencies: static_objs,
  94                                         c_args: cflags)
  95                         objs += tmp_lib.extract_all_objects()
  96                         sources = custom_target(out_filename,
  97                                         command: [pmdinfo, tmp_lib.full_path(),
  98                                                 '@OUTPUT@', pmdinfogen],
  99                                         output: out_filename,
 100                                         depends: [pmdinfogen, tmp_lib])
 101
 102                         if get_option('per_library_versions')
 103                                 lib_version = '@0@.1'.format(version)
 104                                 so_version = '@0@'.format(version)
 105                         else
 106                                 lib_version = major_version
 107                                 so_version = major_version
 108                         endif
 109
 110                         # now build the static driver
 111                         static_lib = static_library(lib_name,
 112                                 sources,
 113                                 objects: objs,
 114                                 include_directories: includes,
 115                                 dependencies: static_objs,
 116                                 c_args: cflags,
 117                                 install: true)
 118
 119                         # now build the shared driver
 120                         version_map = '@0@/@1@/@2@_version.map'.format(
 121                                         meson.current_source_dir(),
 122                                         drv_path, lib_name)
 123                         shared_lib = shared_library(lib_name,
 124                                 sources,
 125                                 objects: objs,
 126                                 include_directories: includes,
 127                                 dependencies: shared_objs,
 128                                 c_args: cflags,
 129                                 link_args: '-Wl,--version-script=' + version_map,
 130                                 link_depends: version_map,
 131                                 version: lib_version,
 132                                 soversion: so_version,
 133                                 install: true,
 134                                 install_dir: driver_install_path)
 135
 136                         # create a dependency object and add it to the global dictionary so
 137                         # testpmd or other built-in apps can find it if necessary
 138                         shared_dep = declare_dependency(link_with: shared_lib,
 139                                         include_directories: includes,
 140                                         dependencies: shared_objs)
 141                         static_dep = declare_dependency(link_with: static_lib,
 142                                         include_directories: includes,
 143                                         dependencies: static_objs)
 144
 145                         dpdk_drivers += static_lib
 146
 147                         set_variable('shared_@0@'.format(lib_name), shared_dep)
 148                         set_variable('static_@0@'.format(lib_name), static_dep)
 149                 endif # build
 150         endforeach
 151
 152         set_variable(class + '_drivers', class_drivers)
 153 endforeach