The Meson Build System
http://mesonbuild.com/
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365 lines
17 KiB
365 lines
17 KiB
# Copyright 2018 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# This class contains the basic functionality needed to run any interpreter |
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# or an interpreter-based tool |
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from __future__ import annotations |
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import argparse |
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import copy |
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import os |
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import typing as T |
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from .. import compilers, environment, mesonlib, optinterpreter |
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from .. import coredata as cdata |
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from ..build import Executable, Jar, SharedLibrary, SharedModule, StaticLibrary |
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from ..compilers import detect_compiler_for |
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from ..interpreterbase import InvalidArguments |
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from ..mesonlib import MachineChoice, OptionKey |
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from ..mparser import BaseNode, ArithmeticNode, ArrayNode, ElementaryNode, IdNode, FunctionNode, StringNode |
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from .interpreter import AstInterpreter |
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if T.TYPE_CHECKING: |
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from ..build import BuildTarget |
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from ..interpreterbase import TYPE_nvar |
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from .visitor import AstVisitor |
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# TODO: it would be nice to not have to duplicate this |
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BUILD_TARGET_FUNCTIONS = [ |
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'executable', 'jar', 'library', 'shared_library', 'shared_module', |
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'static_library', 'both_libraries' |
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] |
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class IntrospectionHelper(argparse.Namespace): |
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# mimic an argparse namespace |
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def __init__(self, cross_file: str): |
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super().__init__() |
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self.cross_file = cross_file # type: str |
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self.native_file = None # type: str |
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self.cmd_line_options = {} # type: T.Dict[str, str] |
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def __eq__(self, other: object) -> bool: |
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return NotImplemented |
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class IntrospectionInterpreter(AstInterpreter): |
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# Interpreter to detect the options without a build directory |
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# Most of the code is stolen from interpreter.Interpreter |
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def __init__(self, |
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source_root: str, |
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subdir: str, |
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backend: str, |
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visitors: T.Optional[T.List[AstVisitor]] = None, |
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cross_file: T.Optional[str] = None, |
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subproject: str = '', |
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subproject_dir: str = 'subprojects', |
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env: T.Optional[environment.Environment] = None): |
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visitors = visitors if visitors is not None else [] |
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super().__init__(source_root, subdir, subproject, visitors=visitors) |
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options = IntrospectionHelper(cross_file) |
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self.cross_file = cross_file |
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if env is None: |
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self.environment = environment.Environment(source_root, None, options) |
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else: |
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self.environment = env |
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self.subproject_dir = subproject_dir |
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self.coredata = self.environment.get_coredata() |
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self.backend = backend |
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self.default_options = {OptionKey('backend'): self.backend} |
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self.project_data = {} # type: T.Dict[str, T.Any] |
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self.targets = [] # type: T.List[T.Dict[str, T.Any]] |
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self.dependencies = [] # type: T.List[T.Dict[str, T.Any]] |
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self.project_node = None # type: BaseNode |
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self.funcs.update({ |
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'add_languages': self.func_add_languages, |
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'dependency': self.func_dependency, |
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'executable': self.func_executable, |
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'jar': self.func_jar, |
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'library': self.func_library, |
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'project': self.func_project, |
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'shared_library': self.func_shared_lib, |
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'shared_module': self.func_shared_module, |
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'static_library': self.func_static_lib, |
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'both_libraries': self.func_both_lib, |
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}) |
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def func_project(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> None: |
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if self.project_node: |
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raise InvalidArguments('Second call to project()') |
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self.project_node = node |
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if len(args) < 1: |
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raise InvalidArguments('Not enough arguments to project(). Needs at least the project name.') |
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proj_name = args[0] |
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proj_vers = kwargs.get('version', 'undefined') |
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proj_langs = self.flatten_args(args[1:]) |
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if isinstance(proj_vers, ElementaryNode): |
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proj_vers = proj_vers.value |
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if not isinstance(proj_vers, str): |
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proj_vers = 'undefined' |
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self.project_data = {'descriptive_name': proj_name, 'version': proj_vers} |
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optfile = os.path.join(self.source_root, self.subdir, 'meson.options') |
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if not os.path.exists(optfile): |
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optfile = os.path.join(self.source_root, self.subdir, 'meson_options.txt') |
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if os.path.exists(optfile): |
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oi = optinterpreter.OptionInterpreter(self.subproject) |
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oi.process(optfile) |
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self.coredata.update_project_options(oi.options) |
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def_opts = self.flatten_args(kwargs.get('default_options', [])) |
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_project_default_options = mesonlib.stringlistify(def_opts) |
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self.project_default_options = cdata.create_options_dict(_project_default_options, self.subproject) |
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self.default_options.update(self.project_default_options) |
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self.coredata.set_default_options(self.default_options, self.subproject, self.environment) |
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if not self.is_subproject() and 'subproject_dir' in kwargs: |
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spdirname = kwargs['subproject_dir'] |
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if isinstance(spdirname, StringNode): |
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assert isinstance(spdirname.value, str) |
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self.subproject_dir = spdirname.value |
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if not self.is_subproject(): |
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self.project_data['subprojects'] = [] |
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subprojects_dir = os.path.join(self.source_root, self.subproject_dir) |
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if os.path.isdir(subprojects_dir): |
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for i in os.listdir(subprojects_dir): |
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if os.path.isdir(os.path.join(subprojects_dir, i)): |
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self.do_subproject(i) |
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self.coredata.init_backend_options(self.backend) |
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options = {k: v for k, v in self.environment.options.items() if k.is_backend()} |
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self.coredata.set_options(options) |
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self._add_languages(proj_langs, True, MachineChoice.HOST) |
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self._add_languages(proj_langs, True, MachineChoice.BUILD) |
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def do_subproject(self, dirname: str) -> None: |
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subproject_dir_abs = os.path.join(self.environment.get_source_dir(), self.subproject_dir) |
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subpr = os.path.join(subproject_dir_abs, dirname) |
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try: |
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subi = IntrospectionInterpreter(subpr, '', self.backend, cross_file=self.cross_file, subproject=dirname, subproject_dir=self.subproject_dir, env=self.environment, visitors=self.visitors) |
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subi.analyze() |
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subi.project_data['name'] = dirname |
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self.project_data['subprojects'] += [subi.project_data] |
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except (mesonlib.MesonException, RuntimeError): |
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return |
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def func_add_languages(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> None: |
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kwargs = self.flatten_kwargs(kwargs) |
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required = kwargs.get('required', True) |
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if isinstance(required, cdata.UserFeatureOption): |
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required = required.is_enabled() |
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if 'native' in kwargs: |
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native = kwargs.get('native', False) |
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self._add_languages(args, required, MachineChoice.BUILD if native else MachineChoice.HOST) |
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else: |
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for for_machine in [MachineChoice.BUILD, MachineChoice.HOST]: |
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self._add_languages(args, required, for_machine) |
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def _add_languages(self, raw_langs: T.List[TYPE_nvar], required: bool, for_machine: MachineChoice) -> None: |
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langs = [] # type: T.List[str] |
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for l in self.flatten_args(raw_langs): |
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if isinstance(l, str): |
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langs.append(l) |
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elif isinstance(l, StringNode): |
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langs.append(l.value) |
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for lang in sorted(langs, key=compilers.sort_clink): |
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lang = lang.lower() |
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if lang not in self.coredata.compilers[for_machine]: |
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try: |
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comp = detect_compiler_for(self.environment, lang, for_machine, True) |
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except mesonlib.MesonException: |
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# do we even care about introspecting this language? |
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if required: |
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raise |
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else: |
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continue |
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if self.subproject: |
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options = {} |
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for k in comp.get_options(): |
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v = copy.copy(self.coredata.options[k]) |
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k = k.evolve(subproject=self.subproject) |
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options[k] = v |
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self.coredata.add_compiler_options(options, lang, for_machine, self.environment) |
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def func_dependency(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> None: |
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args = self.flatten_args(args) |
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kwargs = self.flatten_kwargs(kwargs) |
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if not args: |
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return |
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name = args[0] |
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has_fallback = 'fallback' in kwargs |
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required = kwargs.get('required', True) |
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version = kwargs.get('version', []) |
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if not isinstance(version, list): |
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version = [version] |
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if isinstance(required, ElementaryNode): |
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required = required.value |
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if not isinstance(required, bool): |
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required = False |
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self.dependencies += [{ |
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'name': name, |
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'required': required, |
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'version': version, |
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'has_fallback': has_fallback, |
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'conditional': node.condition_level > 0, |
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'node': node |
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}] |
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def build_target(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs_raw: T.Dict[str, TYPE_nvar], targetclass: T.Type[BuildTarget]) -> T.Optional[T.Dict[str, T.Any]]: |
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args = self.flatten_args(args) |
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if not args or not isinstance(args[0], str): |
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return None |
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name = args[0] |
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srcqueue = [node] |
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extra_queue = [] |
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# Process the sources BEFORE flattening the kwargs, to preserve the original nodes |
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if 'sources' in kwargs_raw: |
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srcqueue += mesonlib.listify(kwargs_raw['sources']) |
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if 'extra_files' in kwargs_raw: |
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extra_queue += mesonlib.listify(kwargs_raw['extra_files']) |
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kwargs = self.flatten_kwargs(kwargs_raw, True) |
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def traverse_nodes(inqueue: T.List[BaseNode]) -> T.List[BaseNode]: |
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res = [] # type: T.List[BaseNode] |
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while inqueue: |
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curr = inqueue.pop(0) |
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arg_node = None |
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assert isinstance(curr, BaseNode) |
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if isinstance(curr, FunctionNode): |
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arg_node = curr.args |
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elif isinstance(curr, ArrayNode): |
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arg_node = curr.args |
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elif isinstance(curr, IdNode): |
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# Try to resolve the ID and append the node to the queue |
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assert isinstance(curr.value, str) |
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var_name = curr.value |
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if var_name in self.assignments: |
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tmp_node = self.assignments[var_name] |
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if isinstance(tmp_node, (ArrayNode, IdNode, FunctionNode)): |
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inqueue += [tmp_node] |
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elif isinstance(curr, ArithmeticNode): |
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inqueue += [curr.left, curr.right] |
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if arg_node is None: |
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continue |
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arg_nodes = arg_node.arguments.copy() |
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# Pop the first element if the function is a build target function |
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if isinstance(curr, FunctionNode) and curr.func_name in BUILD_TARGET_FUNCTIONS: |
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arg_nodes.pop(0) |
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elementary_nodes = [x for x in arg_nodes if isinstance(x, (str, StringNode))] |
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inqueue += [x for x in arg_nodes if isinstance(x, (FunctionNode, ArrayNode, IdNode, ArithmeticNode))] |
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if elementary_nodes: |
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res += [curr] |
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return res |
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source_nodes = traverse_nodes(srcqueue) |
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extraf_nodes = traverse_nodes(extra_queue) |
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# Make sure nothing can crash when creating the build class |
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kwargs_reduced = {k: v for k, v in kwargs.items() if k in targetclass.known_kwargs and k in {'install', 'build_by_default', 'build_always'}} |
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kwargs_reduced = {k: v.value if isinstance(v, ElementaryNode) else v for k, v in kwargs_reduced.items()} |
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kwargs_reduced = {k: v for k, v in kwargs_reduced.items() if not isinstance(v, BaseNode)} |
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for_machine = MachineChoice.HOST |
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objects = [] # type: T.List[T.Any] |
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empty_sources = [] # type: T.List[T.Any] |
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# Passing the unresolved sources list causes errors |
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kwargs_reduced['_allow_no_sources'] = True |
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target = targetclass(name, self.subdir, self.subproject, for_machine, empty_sources, [], objects, |
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self.environment, self.coredata.compilers[for_machine], kwargs_reduced) |
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target.process_compilers() |
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target.process_compilers_late([]) |
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new_target = { |
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'name': target.get_basename(), |
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'id': target.get_id(), |
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'type': target.get_typename(), |
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'defined_in': os.path.normpath(os.path.join(self.source_root, self.subdir, environment.build_filename)), |
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'subdir': self.subdir, |
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'build_by_default': target.build_by_default, |
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'installed': target.should_install(), |
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'outputs': target.get_outputs(), |
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'sources': source_nodes, |
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'extra_files': extraf_nodes, |
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'kwargs': kwargs, |
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'node': node, |
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} |
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self.targets += [new_target] |
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return new_target |
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def build_library(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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default_library = self.coredata.get_option(OptionKey('default_library')) |
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if default_library == 'shared': |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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elif default_library == 'static': |
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return self.build_target(node, args, kwargs, StaticLibrary) |
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elif default_library == 'both': |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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return None |
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def func_executable(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, Executable) |
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def func_static_lib(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, StaticLibrary) |
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def func_shared_lib(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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def func_both_lib(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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def func_shared_module(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, SharedModule) |
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def func_library(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_library(node, args, kwargs) |
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def func_jar(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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return self.build_target(node, args, kwargs, Jar) |
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def func_build_target(self, node: BaseNode, args: T.List[TYPE_nvar], kwargs: T.Dict[str, TYPE_nvar]) -> T.Optional[T.Dict[str, T.Any]]: |
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if 'target_type' not in kwargs: |
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return None |
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target_type = kwargs.pop('target_type') |
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if isinstance(target_type, ElementaryNode): |
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target_type = target_type.value |
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if target_type == 'executable': |
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return self.build_target(node, args, kwargs, Executable) |
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elif target_type == 'shared_library': |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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elif target_type == 'static_library': |
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return self.build_target(node, args, kwargs, StaticLibrary) |
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elif target_type == 'both_libraries': |
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return self.build_target(node, args, kwargs, SharedLibrary) |
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elif target_type == 'library': |
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return self.build_library(node, args, kwargs) |
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elif target_type == 'jar': |
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return self.build_target(node, args, kwargs, Jar) |
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return None |
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def is_subproject(self) -> bool: |
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return self.subproject != '' |
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def analyze(self) -> None: |
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self.load_root_meson_file() |
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self.sanity_check_ast() |
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self.parse_project() |
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self.run()
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