xref: /dpdk/drivers/meson.build (revision da68794d) 
1# SPDX-License-Identifier: BSD-3-Clause
2# Copyright(c) 2017 Intel Corporation
3
4# Defines the order in which the drivers are buit.
5dpdk_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
15default_cflags = machine_args
16if cc.has_argument('-Wno-format-truncation')
17	default_cflags += '-Wno-format-truncation'
18endif
19
20# specify -D_GNU_SOURCE unconditionally
21default_cflags += '-D_GNU_SOURCE'
22
23foreach 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 = '@[email protected]'.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)
153endforeach
154