build: change ABI versioning to global
[dpdk.git] / lib / meson.build
index e067ce5..6ceb5e7 100644 (file)
@@ -11,8 +11,8 @@
 libraries = [
        'kvargs', # eal depends on kvargs
        'eal', # everything depends on eal
-       'cmdline', # ethdev depends on cmdline for parsing functions
        'ring', 'mempool', 'mbuf', 'net', 'meter', 'ethdev', 'pci', # core
+       'cmdline',
        'metrics', # bitrate/latency stats depends on this
        'hash',    # efd depends on this
        'timer',   # eventdev depends on this
@@ -22,9 +22,11 @@ libraries = [
        'gro', 'gso', 'ip_frag', 'jobstats',
        'kni', 'latencystats', 'lpm', 'member',
        'power', 'pdump', 'rawdev',
-       'rcu', 'reorder', 'sched', 'security', 'stack', 'vhost',
-       #ipsec lib depends on crypto and security
+       'rcu', 'rib', 'reorder', 'sched', 'security', 'stack', 'vhost',
+       # ipsec lib depends on net, crypto and security
        'ipsec',
+       #fib lib depends on rib
+       'fib',
        # add pkt framework libs which use other libs from above
        'port', 'table', 'pipeline',
        # flow_classify lib depends on pkt framework table lib
@@ -41,14 +43,12 @@ endif
 
 enabled_libs = [] # used to print summary at the end
 
-# -D_GNU_SOURCE unconditionally
-default_cflags += '-D_GNU_SOURCE'
-
 foreach l:libraries
        build = true
+       reason = '<unknown reason>' # set if build == false to explain why
        name = l
-       version = 1
        allow_experimental_apis = false
+       use_function_versioning = false
        sources = []
        headers = []
        includes = []
@@ -69,6 +69,22 @@ foreach l:libraries
        subdir(dir_name)
 
        if build
+               shared_deps = ext_deps
+               static_deps = ext_deps
+               foreach d:deps
+                       if not is_variable('shared_rte_' + d)
+                               error('Missing internal dependency "@0@" for @1@ [@2@]'
+                                               .format(d, name, 'lib/' + dir_name))
+                       endif
+                       shared_deps += [get_variable('shared_rte_' + d)]
+                       static_deps += [get_variable('static_rte_' + d)]
+               endforeach
+       endif
+
+       if not build
+               dpdk_libs_disabled += name
+               set_variable(name.underscorify() + '_disable_reason', reason)
+       else
                enabled_libs += name
                dpdk_conf.set('RTE_LIBRTE_' + name.to_upper(), 1)
                install_headers(headers)
@@ -81,27 +97,26 @@ foreach l:libraries
                        shared_dep = declare_dependency(include_directories: includes)
                        static_dep = shared_dep
                else
-                       shared_deps = ext_deps
-                       static_deps = ext_deps
-                       foreach d:deps
-                               if not is_variable('shared_rte_' + d)
-                                       error('Missing dependency ' + d +
-                                               ' for library ' + libname)
-                               endif
-                               shared_deps += [get_variable('shared_rte_' + d)]
-                               static_deps += [get_variable('static_rte_' + d)]
-                       endforeach
 
                        if allow_experimental_apis
                                cflags += '-DALLOW_EXPERIMENTAL_API'
                        endif
+                       if use_function_versioning
+                               cflags += '-DRTE_USE_FUNCTION_VERSIONING'
+                       endif
+
+                       version_map = '@0@/@1@/rte_@2@_version.map'.format(
+                                       meson.current_source_dir(), dir_name, name)
+
+                       is_experimental = run_command(is_experimental_cmd,
+                                       files(version_map)).returncode()
 
-                       if get_option('per_library_versions')
-                               lib_version = '@0@.1'.format(version)
-                               so_version = '@0@'.format(version)
+                       if is_experimental != 0
+                               lib_version = experimental_abi_version
+                               so_version = experimental_abi_version
                        else
-                               lib_version = major_version
-                               so_version = major_version
+                               lib_version = abi_version
+                               so_version = abi_version
                        endif
 
                        # first build static lib
@@ -116,20 +131,40 @@ foreach l:libraries
                                        include_directories: includes,
                                        dependencies: static_deps)
 
-                       # then use pre-build objects to build shared lib
-                       sources = []
-                       objs += static_lib.extract_all_objects(recursive: false)
+                       if not use_function_versioning
+                               # use pre-build objects to build shared lib
+                               sources = []
+                               objs += static_lib.extract_all_objects(recursive: false)
+                       else
+                               # for compat we need to rebuild with
+                               # RTE_BUILD_SHARED_LIB defined
+                               cflags += '-DRTE_BUILD_SHARED_LIB'
+                       endif
                        version_map = '@0@/@1@/rte_@2@_version.map'.format(
                                        meson.current_source_dir(), dir_name, name)
-                       exports = []
                        implib = dir_name + '.dll.a'
+
+                       def_file = custom_target(name + '_def',
+                               command: [map_to_def_cmd, '@INPUT@', '@OUTPUT@'],
+                               input: version_map,
+                               output: 'rte_@0@_exports.def'.format(name))
+                       lk_deps = [version_map, def_file]
                        if is_windows
-                               exports = '@0@/@1@/rte_@2@_exports.def'.format(
-                                       meson.current_source_dir(), dir_name, name)
-                               lk_args = ['-Wl,/def:' + exports, '-Wl,/implib:lib\\' + implib]
+                               lk_args = ['-Wl,/def:' + def_file.full_path(),
+                                       '-Wl,/implib:lib\\' + implib]
                        else
                                lk_args = ['-Wl,--version-script=' + version_map]
+                               # on unix systems check the output of the
+                               # experimental syms script, using it as a
+                               # dependency of the .so build
+                               lk_deps += custom_target(name + '.exp_chk',
+                                       command: [check_experimental_syms,
+                                               version_map, '@INPUT@'],
+                                       capture: true,
+                                       input: static_lib,
+                                       output: name + '.exp_chk')
                        endif
+
                        shared_lib = shared_library(libname,
                                        sources,
                                        objects: objs,
@@ -137,7 +172,7 @@ foreach l:libraries
                                        dependencies: shared_deps,
                                        include_directories: includes,
                                        link_args: lk_args,
-                                       link_depends: [version_map, exports],
+                                       link_depends: lk_deps,
                                        version: lib_version,
                                        soversion: so_version,
                                        install: true)
@@ -149,7 +184,9 @@ foreach l:libraries
                        dpdk_static_libraries = [static_lib] + dpdk_static_libraries
                endif # sources.length() > 0
 
-               set_variable('shared_' + libname, shared_dep)
-               set_variable('static_' + libname, static_dep)
+               set_variable('shared_rte_' + name, shared_dep)
+               set_variable('static_rte_' + name, static_dep)
+               message('lib/@0@: Defining dependency "@1@"'.format(
+                               dir_name, name))
        endif # if build
 endforeach