45775d7512
Since meson 0.44, changing any file inside a PMD directory (quite correctly) triggers a full re-run of meson on build, rather than an incremental build as with earlier versions. This rerun is needed because we use "grep" in meson to search for files on which to run pmdinfogen, and changing any of those files means that grep and, therefore meson, needs to be rerun. [Previous versions of meson did not track this dependency on the grep command, and so did incremental builds only.] If, however, we take advantage of pmdinfogen's ability to use stdin and stdout instead of files, we can instead use a shell script to process an entire static archive and generate a single .c file from it. This eliminates the need for grep, and means that changes to a PMD file only need an incremental build - a significant time saving. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
134 lines
4.1 KiB
Meson
134 lines
4.1 KiB
Meson
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2017 Intel Corporation
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# Defines the order in which the drivers are buit.
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driver_classes = ['bus',
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'mempool', # depends on bus.
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'net', # depends on bus and mempool.
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'crypto', # depenss on bus, mempool (net in future).
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'event'] # depends on bus, mempool and net.
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foreach class:driver_classes
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drivers = []
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std_deps = []
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config_flag_fmt = '' # format string used to set the value in dpdk_conf
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driver_name_fmt = '' # format string for driver name, used to name
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# the library, the dependency and to find the
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# version file for linking
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subdir(class)
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foreach drv:drivers
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drv_path = join_paths(class, drv)
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# set up empty variables used for build
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build = true # set to false to disable, e.g. missing deps
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name = drv
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version = 1
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allow_experimental_apis = false
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sources = []
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objs = []
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cflags = machine_args
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includes = [include_directories(drv_path)]
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# set up internal deps. Drivers can append/override as necessary
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deps = std_deps
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# ext_deps: Stores external library dependency got
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# using dependency() or cc.find_library(). For most cases, we
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# probably also need to specify the "-l" flags in
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# pkgconfig_extra_libs variable too, so that it can be reflected
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# in the pkgconfig output for static builds
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ext_deps = []
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pkgconfig_extra_libs = []
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# pull in driver directory which should assign to each of the above
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subdir(drv_path)
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if build
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dpdk_conf.set(config_flag_fmt.format(name.to_upper()),1)
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lib_name = driver_name_fmt.format(name)
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if allow_experimental_apis
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cflags += '-DALLOW_EXPERIMENTAL_API'
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endif
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# get dependency objs from strings
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shared_objs = []
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static_objs = []
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foreach d:deps
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shared_objs += [get_variable('shared_rte_' + d)]
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static_objs += [get_variable('static_rte_' + d)]
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endforeach
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shared_objs += ext_deps
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static_objs += ext_deps
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dpdk_extra_ldflags += pkgconfig_extra_libs
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# generate pmdinfo sources by building a temporary
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# lib and then running pmdinfogen on the contents of
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# that lib. The final lib reuses the object files and
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# adds in the new source file.
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out_filename = lib_name + '.pmd.c'
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tmp_lib = static_library('tmp_' + lib_name,
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sources,
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include_directories: includes,
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dependencies: static_objs,
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c_args: cflags)
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objs += tmp_lib.extract_all_objects()
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sources = custom_target(out_filename,
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command: [pmdinfo, tmp_lib.full_path(),
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'@OUTPUT@', pmdinfogen],
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output: out_filename,
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depends: [pmdinfogen, tmp_lib])
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if get_option('per_library_versions')
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lib_version = '@0@.1'.format(version)
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so_version = '@0@'.format(version)
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else
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pver = meson.project_version().split('.')
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lib_version = '@0@.@1@'.format(pver.get(0),
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pver.get(1))
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so_version = lib_version
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endif
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# now build the static driver
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static_lib = static_library(lib_name,
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sources,
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objects: objs,
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include_directories: includes,
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dependencies: static_objs,
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c_args: cflags,
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install: true)
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# now build the shared driver
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version_map = '@0@/@1@/@2@_version.map'.format(
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meson.current_source_dir(),
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drv_path, lib_name)
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shared_lib = shared_library(lib_name,
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sources,
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objects: objs,
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include_directories: includes,
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dependencies: shared_objs,
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c_args: cflags,
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link_args: '-Wl,--version-script=' + version_map,
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link_depends: version_map,
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version: lib_version,
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soversion: so_version,
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install: true,
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install_dir: driver_install_path)
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# create a dependency object and add it to the global dictionary so
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# testpmd or other built-in apps can find it if necessary
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shared_dep = declare_dependency(link_with: shared_lib,
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include_directories: includes,
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dependencies: shared_objs)
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static_dep = declare_dependency(link_with: static_lib,
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include_directories: includes,
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dependencies: static_objs)
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dpdk_drivers += static_lib
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set_variable('shared_@0@'.format(lib_name), shared_dep)
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set_variable('static_@0@'.format(lib_name), static_dep)
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endif # build
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endforeach
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endforeach
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