meson/mesonbuild/interpreter/compiler.py

# SPDX-Licnese-Identifier: Apache-2.0
# Copyright 2012-2021 The Meson development team
# Copyright © 2021 Intel Corpration

import enum
import functools
import typing as T

from .. import build
from .. import coredata
from .. import dependencies
from .. import mesonlib
from .. import mlog
from ..compilers.compilers import CompileCheckMode
from ..interpreterbase import (ObjectHolder, noPosargs, noKwargs,
                               FeatureNew, disablerIfNotFound,
                               InterpreterException)
from ..interpreterbase.decorators import ContainerTypeInfo, typed_kwargs, KwargInfo, typed_pos_args
from .interpreterobjects import (extract_required_kwarg, extract_search_dirs)
from .type_checking import REQUIRED_KW

if T.TYPE_CHECKING:
    from ..interpreter import Interpreter
    from ..compilers import Compiler, RunResult
    from ..interpreterbase import TYPE_var, TYPE_kwargs
    from .kwargs import ExtractRequired, ExtractSearchDirs

    from typing_extensions import TypedDict, Literal

    class GetSupportedArgumentKw(TypedDict):

        checked: Literal['warn', 'require', 'off']

    class AlignmentKw(TypedDict):

        prefix: str
        args: T.List[str]
        dependencies: T.List[dependencies.Dependency]

    class CompileKW(TypedDict):

        name: str
        no_builtin_args: bool
        include_directories: T.List[build.IncludeDirs]
        args: T.List[str]
        dependencies: T.List[dependencies.Dependency]

    class CommonKW(TypedDict):

        prefix: str
        no_builtin_args: bool
        include_directories: T.List[build.IncludeDirs]
        args: T.List[str]
        dependencies: T.List[dependencies.Dependency]

    class CompupteIntKW(CommonKW):

        guess: T.Optional[int]
        high: T.Optional[int]
        low: T.Optional[int]

    class HeaderKW(CommonKW, ExtractRequired):
        pass

    class FindLibraryKW(ExtractRequired, ExtractSearchDirs):

        disabler: bool
        has_headers: T.List[str]
        static: bool

        # This list must be all of the `HeaderKW` values with `header_`
        # prepended to the key
        header_args: T.List[str]
        header_dependencies: T.List[dependencies.Dependency]
        header_include_directories: T.List[build.IncludeDirs]
        header_no_builtin_args: bool
        header_prefix: str
        header_required: T.Union[bool, coredata.UserFeatureOption]


class _TestMode(enum.Enum):

    """Whether we're doing a compiler or linker check."""

    COMPILER = 0
    LINKER = 1


class TryRunResultHolder(ObjectHolder['RunResult']):
    def __init__(self, res: 'RunResult', interpreter: 'Interpreter'):
        super().__init__(res, interpreter)
        self.methods.update({'returncode': self.returncode_method,
                             'compiled': self.compiled_method,
                             'stdout': self.stdout_method,
                             'stderr': self.stderr_method,
                             })

    @noPosargs
    @noKwargs
    def returncode_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> int:
        return self.held_object.returncode

    @noPosargs
    @noKwargs
    def compiled_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> bool:
        return self.held_object.compiled

    @noPosargs
    @noKwargs
    def stdout_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.held_object.stdout

    @noPosargs
    @noKwargs
    def stderr_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.held_object.stderr


_ARGS_KW: KwargInfo[T.List[str]] = KwargInfo(
    'args',
    ContainerTypeInfo(list, str),
    listify=True,
    default=[],
)
_DEPENDENCIES_KW: KwargInfo[T.List['dependencies.Dependency']] = KwargInfo(
    'dependencies',
    ContainerTypeInfo(list, dependencies.Dependency),
    listify=True,
    default=[],
)
_INCLUDE_DIRS_KW: KwargInfo[T.List[build.IncludeDirs]] = KwargInfo(
    'include_directories',
    ContainerTypeInfo(list, build.IncludeDirs),
    default=[],
    listify=True,
)
_PREFIX_KW = KwargInfo('prefix', str, default='')
_NO_BUILTIN_ARGS_KW = KwargInfo('no_builtin_args', bool, default=False)
_NAME_KW = KwargInfo('name', str, default='')

# Many of the compiler methods take this kwarg signature exactly, this allows
# simplifying the `typed_kwargs` calls
_COMMON_KWS: T.List[KwargInfo] = [_ARGS_KW, _DEPENDENCIES_KW, _INCLUDE_DIRS_KW, _PREFIX_KW, _NO_BUILTIN_ARGS_KW]

# Common methods of compiles, links, runs, and similar
_COMPILES_KWS: T.List[KwargInfo] = [_NAME_KW, _ARGS_KW, _DEPENDENCIES_KW, _INCLUDE_DIRS_KW, _NO_BUILTIN_ARGS_KW]

_HEADER_KWS: T.List[KwargInfo] = [REQUIRED_KW.evolve(since='0.50.0', default=False), *_COMMON_KWS]

class CompilerHolder(ObjectHolder['Compiler']):
    def __init__(self, compiler: 'Compiler', interpreter: 'Interpreter'):
        super().__init__(compiler, interpreter)
        self.environment = self.env
        self.methods.update({'compiles': self.compiles_method,
                             'links': self.links_method,
                             'get_id': self.get_id_method,
                             'get_linker_id': self.get_linker_id_method,
                             'compute_int': self.compute_int_method,
                             'sizeof': self.sizeof_method,
                             'get_define': self.get_define_method,
                             'check_header': self.check_header_method,
                             'has_header': self.has_header_method,
                             'has_header_symbol': self.has_header_symbol_method,
                             'run': self.run_method,
                             'has_function': self.has_function_method,
                             'has_member': self.has_member_method,
                             'has_members': self.has_members_method,
                             'has_type': self.has_type_method,
                             'alignment': self.alignment_method,
                             'version': self.version_method,
                             'cmd_array': self.cmd_array_method,
                             'find_library': self.find_library_method,
                             'has_argument': self.has_argument_method,
                             'has_function_attribute': self.has_func_attribute_method,
                             'get_supported_function_attributes': self.get_supported_function_attributes_method,
                             'has_multi_arguments': self.has_multi_arguments_method,
                             'get_supported_arguments': self.get_supported_arguments_method,
                             'first_supported_argument': self.first_supported_argument_method,
                             'has_link_argument': self.has_link_argument_method,
                             'has_multi_link_arguments': self.has_multi_link_arguments_method,
                             'get_supported_link_arguments': self.get_supported_link_arguments_method,
                             'first_supported_link_argument': self.first_supported_link_argument_method,
                             'symbols_have_underscore_prefix': self.symbols_have_underscore_prefix_method,
                             'get_argument_syntax': self.get_argument_syntax_method,
                             })

    @property
    def compiler(self) -> 'Compiler':
        return self.held_object

    @staticmethod
    def _dep_msg(deps: T.List['dependencies.Dependency'], endl: str) -> str:
        msg_single = 'with dependency {}'
        msg_many = 'with dependencies {}'
        if not deps:
            return endl
        if endl is None:
            endl = ''
        names = []
        for d in deps:
            if isinstance(d, dependencies.InternalDependency):
                continue
            if isinstance(d, dependencies.ExternalLibrary):
                name = '-l' + d.name
            else:
                name = d.name
            names.append(name)
        if not names:
            return None
        tpl = msg_many if len(names) > 1 else msg_single
        return tpl.format(', '.join(names)) + endl

    @noPosargs
    @noKwargs
    def version_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.compiler.version

    @noPosargs
    @noKwargs
    def cmd_array_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> T.List[str]:
        return self.compiler.exelist

    def _determine_args(self, nobuiltins: bool,
                       incdirs: T.List[build.IncludeDirs],
                       extra_args: T.List[str],
                       mode: CompileCheckMode = CompileCheckMode.LINK) -> T.List[str]:
        args: T.List[str] = []
        for i in incdirs:
            for idir in i.to_string_list(self.environment.get_source_dir()):
                args.extend(self.compiler.get_include_args(idir, False))
        if not nobuiltins:
            opts = self.environment.coredata.options
            args += self.compiler.get_option_compile_args(opts)
            if mode is CompileCheckMode.LINK:
                args.extend(self.compiler.get_option_link_args(opts))
        args.extend(extra_args)
        return args

    def _determine_dependencies(self, deps: T.List['dependencies.Dependency'], endl: str = ':') -> T.Tuple[T.List['dependencies.Dependency'], str]:
        if deps:
            final_deps = []
            while deps:
                next_deps = []
                for d in mesonlib.listify(deps):
                    if not isinstance(d, dependencies.Dependency) or d.is_built():
                        raise InterpreterException('Dependencies must be external dependencies')
                    final_deps.append(d)
                    next_deps.extend(d.ext_deps)
                deps = next_deps
            deps = final_deps
        else:
            # Ensure that we alway return a new instance
            deps = deps.copy()
        return deps, self._dep_msg(deps, endl)

    @typed_pos_args('compiler.alignment', str)
    @typed_kwargs(
        'compiler.alignment',
        _PREFIX_KW,
        _ARGS_KW,
        _DEPENDENCIES_KW,
    )
    def alignment_method(self, args: T.Tuple[str], kwargs: 'AlignmentKw') -> int:
        typename = args[0]
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        result = self.compiler.alignment(typename, kwargs['prefix'], self.environment,
                                         extra_args=kwargs['args'],
                                         dependencies=deps)
        mlog.log('Checking for alignment of', mlog.bold(typename, True), msg, result)
        return result

    @typed_pos_args('compiler.run', (str, mesonlib.File))
    @typed_kwargs('compiler.run', *_COMPILES_KWS)
    def run_method(self, args: T.Tuple['mesonlib.FileOrString'], kwargs: 'CompileKW') -> 'RunResult':
        code = args[0]
        if isinstance(code, mesonlib.File):
            code = mesonlib.File.from_absolute_file(
                code.rel_to_builddir(self.environment.source_dir))
        testname = kwargs['name']
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'], endl=None)
        result = self.compiler.run(code, self.environment, extra_args=extra_args,
                                   dependencies=deps)
        if testname:
            if not result.compiled:
                h = mlog.red('DID NOT COMPILE')
            elif result.returncode == 0:
                h = mlog.green('YES')
            else:
                h = mlog.red('NO (%d)' % result.returncode)
            mlog.log('Checking if', mlog.bold(testname, True), msg, 'runs:', h)
        return result

    @noPosargs
    @noKwargs
    def get_id_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.compiler.get_id()

    @noPosargs
    @noKwargs
    @FeatureNew('compiler.get_linker_id', '0.53.0')
    def get_linker_id_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.compiler.get_linker_id()

    @noPosargs
    @noKwargs
    def symbols_have_underscore_prefix_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> bool:
        '''
        Check if the compiler prefixes _ (underscore) to global C symbols
        See: https://en.wikipedia.org/wiki/Name_mangling#C
        '''
        return self.compiler.symbols_have_underscore_prefix(self.environment)

    @typed_pos_args('compiler.has_member', str, str)
    @typed_kwargs('compiler.has_member', *_COMMON_KWS)
    def has_member_method(self, args: T.Tuple[str, str], kwargs: 'CommonKW') -> bool:
        typename, membername = args
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        had, cached = self.compiler.has_members(typename, [membername], kwargs['prefix'],
                                                self.environment,
                                                extra_args=extra_args,
                                                dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if had:
            hadtxt = mlog.green('YES')
        else:
            hadtxt = mlog.red('NO')
        mlog.log('Checking whether type', mlog.bold(typename, True),
                 'has member', mlog.bold(membername, True), msg, hadtxt, cached_msg)
        return had

    @typed_pos_args('compiler.has_members', str, varargs=str, min_varargs=1)
    @typed_kwargs('compiler.has_members', *_COMMON_KWS)
    def has_members_method(self, args: T.Tuple[str, T.List[str]], kwargs: 'CommonKW') -> bool:
        typename, membernames = args
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        had, cached = self.compiler.has_members(typename, membernames, kwargs['prefix'],
                                                self.environment,
                                                extra_args=extra_args,
                                                dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if had:
            hadtxt = mlog.green('YES')
        else:
            hadtxt = mlog.red('NO')
        members = mlog.bold(', '.join([f'"{m}"' for m in membernames]))
        mlog.log('Checking whether type', mlog.bold(typename, True),
                 'has members', members, msg, hadtxt, cached_msg)
        return had

    @typed_pos_args('compiler.has_function', str)
    @typed_kwargs('compiler.has_type', *_COMMON_KWS)
    def has_function_method(self, args: T.Tuple[str], kwargs: 'CommonKW') -> bool:
        funcname = args[0]
        extra_args = self._determine_args(kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        had, cached = self.compiler.has_function(funcname, kwargs['prefix'], self.environment,
                                                 extra_args=extra_args,
                                                 dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if had:
            hadtxt = mlog.green('YES')
        else:
            hadtxt = mlog.red('NO')
        mlog.log('Checking for function', mlog.bold(funcname, True), msg, hadtxt, cached_msg)
        return had

    @typed_pos_args('compiler.has_type', str)
    @typed_kwargs('compiler.has_type', *_COMMON_KWS)
    def has_type_method(self, args: T.Tuple[str], kwargs: 'CommonKW') -> bool:
        typename = args[0]
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        had, cached = self.compiler.has_type(typename, kwargs['prefix'], self.environment,
                                             extra_args=extra_args, dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if had:
            hadtxt = mlog.green('YES')
        else:
            hadtxt = mlog.red('NO')
        mlog.log('Checking for type', mlog.bold(typename, True), msg, hadtxt, cached_msg)
        return had

    @FeatureNew('compiler.compute_int', '0.40.0')
    @typed_pos_args('compiler.compute_int', str)
    @typed_kwargs(
        'compiler.compute_int',
        KwargInfo('low', (int, None)),
        KwargInfo('high', (int, None)),
        KwargInfo('guess', (int, None)),
        *_COMMON_KWS,
    )
    def compute_int_method(self, args: T.Tuple[str], kwargs: 'CompupteIntKW') -> int:
        expression = args[0]
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        res = self.compiler.compute_int(expression, kwargs['low'], kwargs['high'],
                                        kwargs['guess'], kwargs['prefix'],
                                        self.environment, extra_args=extra_args,
                                        dependencies=deps)
        mlog.log('Computing int of', mlog.bold(expression, True), msg, res)
        return res

    @typed_pos_args('compiler.sizeof', str)
    @typed_kwargs('compiler.sizeof', *_COMMON_KWS)
    def sizeof_method(self, args: T.Tuple[str], kwargs: 'CommonKW') -> int:
        element = args[0]
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        esize = self.compiler.sizeof(element, kwargs['prefix'], self.environment,
                                     extra_args=extra_args, dependencies=deps)
        mlog.log('Checking for size of', mlog.bold(element, True), msg, esize)
        return esize

    @FeatureNew('compiler.get_define', '0.40.0')
    @typed_pos_args('compiler.get_define', str)
    @typed_kwargs('compiler.get_define', *_COMMON_KWS)
    def get_define_method(self, args: T.Tuple[str], kwargs: 'CommonKW') -> str:
        element = args[0]
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        value, cached = self.compiler.get_define(element, kwargs['prefix'], self.environment,
                                                 extra_args=extra_args,
                                                 dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        mlog.log('Fetching value of define', mlog.bold(element, True), msg, value, cached_msg)
        return value

    @typed_pos_args('compiler.compiles', (str, mesonlib.File))
    @typed_kwargs('compiler.compiles', *_COMPILES_KWS)
    def compiles_method(self, args: T.Tuple['mesonlib.FileOrString'], kwargs: 'CompileKW') -> bool:
        code = args[0]
        if isinstance(code, mesonlib.File):
            code = mesonlib.File.from_absolute_file(
                code.rel_to_builddir(self.environment.source_dir))
        testname = kwargs['name']
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        result, cached = self.compiler.compiles(code, self.environment,
                                                extra_args=extra_args,
                                                dependencies=deps)
        if testname:
            if result:
                h = mlog.green('YES')
            else:
                h = mlog.red('NO')
            cached_msg = mlog.blue('(cached)') if cached else ''
            mlog.log('Checking if', mlog.bold(testname, True), msg, 'compiles:', h, cached_msg)
        return result

    @typed_pos_args('compiler.links', (str, mesonlib.File))
    @typed_kwargs('compiler.links', *_COMPILES_KWS)
    def links_method(self, args: T.Tuple['mesonlib.FileOrString'], kwargs: 'CompileKW') -> bool:
        code = args[0]
        if isinstance(code, mesonlib.File):
            code = mesonlib.File.from_absolute_file(
                code.rel_to_builddir(self.environment.source_dir))
        testname = kwargs['name']
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        result, cached = self.compiler.links(code, self.environment,
                                             extra_args=extra_args,
                                             dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if testname:
            if result:
                h = mlog.green('YES')
            else:
                h = mlog.red('NO')
            mlog.log('Checking if', mlog.bold(testname, True), msg, 'links:', h, cached_msg)
        return result

    @FeatureNew('compiler.check_header', '0.47.0')
    @typed_pos_args('compiler.check_header', str)
    @typed_kwargs('compiler.check_header', *_HEADER_KWS)
    def check_header_method(self, args: T.Tuple[str], kwargs: 'HeaderKW') -> bool:
        hname = args[0]
        disabled, required, feature = extract_required_kwarg(kwargs, self.subproject, default=False)
        if disabled:
            mlog.log('Check usable header', mlog.bold(hname, True), 'skipped: feature', mlog.bold(feature), 'disabled')
            return False
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        haz, cached = self.compiler.check_header(hname, kwargs['prefix'], self.environment,
                                                 extra_args=extra_args,
                                                 dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if required and not haz:
            raise InterpreterException(f'{self.compiler.get_display_language()} header {hname!r} not usable')
        elif haz:
            h = mlog.green('YES')
        else:
            h = mlog.red('NO')
        mlog.log('Check usable header', mlog.bold(hname, True), msg, h, cached_msg)
        return haz

    def _has_header_impl(self, hname: str, kwargs: 'HeaderKW') -> bool:
        disabled, required, feature = extract_required_kwarg(kwargs, self.subproject, default=False)
        if disabled:
            mlog.log('Has header', mlog.bold(hname, True), 'skipped: feature', mlog.bold(feature), 'disabled')
            return False
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        haz, cached = self.compiler.has_header(hname, kwargs['prefix'], self.environment,
                                               extra_args=extra_args, dependencies=deps)
        cached_msg = mlog.blue('(cached)') if cached else ''
        if required and not haz:
            raise InterpreterException(f'{self.compiler.get_display_language()} header {hname!r} not found')
        elif haz:
            h = mlog.green('YES')
        else:
            h = mlog.red('NO')
        mlog.log('Has header', mlog.bold(hname, True), msg, h, cached_msg)
        return haz

    @typed_pos_args('compiler.has_header', str)
    @typed_kwargs('compiler.has_header', *_HEADER_KWS)
    def has_header_method(self, args: T.Tuple[str], kwargs: 'HeaderKW') -> bool:
        return self._has_header_impl(args[0], kwargs)

    @typed_pos_args('compiler.has_header_symbol', str, str)
    @typed_kwargs('compiler.has_header_symbol', *_HEADER_KWS)
    def has_header_symbol_method(self, args: T.Tuple[str, str], kwargs: 'HeaderKW') -> bool:
        hname, symbol = args
        disabled, required, feature = extract_required_kwarg(kwargs, self.subproject, default=False)
        if disabled:
            mlog.log(f'Header <{hname}> has symbol', mlog.bold(symbol, True), 'skipped: feature', mlog.bold(feature), 'disabled')
            return False
        extra_args = functools.partial(self._determine_args, kwargs['no_builtin_args'], kwargs['include_directories'], kwargs['args'])
        deps, msg = self._determine_dependencies(kwargs['dependencies'])
        haz, cached = self.compiler.has_header_symbol(hname, symbol, kwargs['prefix'], self.environment,
                                                      extra_args=extra_args,
                                                      dependencies=deps)
        if required and not haz:
            raise InterpreterException(f'{self.compiler.get_display_language()} symbol {symbol} not found in header {hname}')
        elif haz:
            h = mlog.green('YES')
        else:
            h = mlog.red('NO')
        cached_msg = mlog.blue('(cached)') if cached else ''
        mlog.log(f'Header <{hname}> has symbol', mlog.bold(symbol, True), msg, h, cached_msg)
        return haz

    def notfound_library(self, libname: str) -> 'dependencies.ExternalLibrary':
        lib = dependencies.ExternalLibrary(libname, None,
                                           self.environment,
                                           self.compiler.language,
                                           silent=True)
        return lib

    @disablerIfNotFound
    @typed_pos_args('compiler.find_library', str)
    @typed_kwargs(
        'compiler.find_library',
        KwargInfo('required', (bool, coredata.UserFeatureOption), default=True),
        KwargInfo('has_headers', ContainerTypeInfo(list, str), listify=True, default=[], since='0.50.0'),
        KwargInfo('static', (bool, None), since='0.51.0'),
        KwargInfo('disabler', bool, default=False, since='0.49.0'),
        KwargInfo('dirs', ContainerTypeInfo(list, str), listify=True, default=[]),
        *[k.evolve(name=f'header_{k.name}') for k in _HEADER_KWS]
    )
    def find_library_method(self, args: T.Tuple[str], kwargs: 'FindLibraryKW') -> 'dependencies.ExternalLibrary':
        # TODO add dependencies support?
        libname = args[0]

        disabled, required, feature = extract_required_kwarg(kwargs, self.subproject)
        if disabled:
            mlog.log('Library', mlog.bold(libname), 'skipped: feature', mlog.bold(feature), 'disabled')
            return self.notfound_library(libname)

        # This could be done with a comprehension, but that confuses the type
        # checker, and having it check this seems valuable
        has_header_kwargs: 'HeaderKW' = {
            'required': required,
            'args': kwargs['header_args'],
            'dependencies': kwargs['header_dependencies'],
            'include_directories': kwargs['header_include_directories'],
            'prefix': kwargs['header_prefix'],
            'no_builtin_args': kwargs['header_no_builtin_args'],
        }
        for h in kwargs['has_headers']:
            if not self._has_header_impl(h, has_header_kwargs):
                return self.notfound_library(libname)

        search_dirs = extract_search_dirs(kwargs)

        if kwargs['static'] is True:
            libtype = mesonlib.LibType.STATIC
        elif kwargs['static'] is False:
            libtype = mesonlib.LibType.SHARED
        else:
            libtype = mesonlib.LibType.PREFER_SHARED
        linkargs = self.compiler.find_library(libname, self.environment, search_dirs, libtype)
        if required and not linkargs:
            if libtype == mesonlib.LibType.PREFER_SHARED:
                libtype_s = 'shared or static'
            else:
                libtype_s = libtype.name.lower()
            raise InterpreterException('{} {} library {!r} not found'
                                       .format(self.compiler.get_display_language(),
                                               libtype_s, libname))
        lib = dependencies.ExternalLibrary(libname, linkargs, self.environment,
                                           self.compiler.language)
        return lib

    def _has_argument_impl(self, arguments: T.Union[str, T.List[str]],
                           mode: _TestMode = _TestMode.COMPILER) -> bool:
        """Shared implementaiton for methods checking compiler and linker arguments."""
        # This simplifies the callers
        if isinstance(arguments, str):
            arguments = [arguments]
        test = self.compiler.has_multi_link_arguments if mode is _TestMode.LINKER else self.compiler.has_multi_arguments
        result, cached = test(arguments, self.environment)
        cached_msg = mlog.blue('(cached)') if cached else ''
        mlog.log(
            'Compiler for',
            self.compiler.get_display_language(),
            'supports{}'.format(' link' if mode is _TestMode.LINKER else ''),
            'arguments {}:'.format(' '.join(arguments)),
            mlog.green('YES') if result else mlog.red('NO'),
            cached_msg)
        return result

    @noKwargs
    @typed_pos_args('compiler.has_argument', str)
    def has_argument_method(self, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> bool:
        return self._has_argument_impl([args[0]])

    @noKwargs
    @typed_pos_args('compiler.has_multi_arguments', varargs=str)
    def has_multi_arguments_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> bool:
        return self._has_argument_impl(args[0])

    @FeatureNew('compiler.get_supported_arguments', '0.43.0')
    @typed_pos_args('compiler.get_supported_arguments', varargs=str)
    @typed_kwargs(
        'compiler.get_supported_arguments',
        KwargInfo('checked', str, default='off', since='0.59.0',
                  validator=lambda s: 'must be one of "warn", "require" or "off"' if s not in ['warn', 'require', 'off'] else None)
    )
    def get_supported_arguments_method(self, args: T.Tuple[T.List[str]], kwargs: 'GetSupportedArgumentKw') -> T.List[str]:
        supported_args: T.List[str] = []
        checked = kwargs['checked']

        for arg in args[0]:
            if not self._has_argument_impl([arg]):
                msg = f'Compiler for {self.compiler.get_display_language()} does not support "{arg}"'
                if checked == 'warn':
                    mlog.warning(msg)
                elif checked == 'require':
                    raise mesonlib.MesonException(msg)
            else:
                supported_args.append(arg)
        return supported_args

    @noKwargs
    @typed_pos_args('compiler.first_supported_argument', varargs=str)
    def first_supported_argument_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> T.List[str]:
        for arg in args[0]:
            if self._has_argument_impl([arg]):
                mlog.log('First supported argument:', mlog.bold(arg))
                return [arg]
        mlog.log('First supported argument:', mlog.red('None'))
        return []

    @FeatureNew('compiler.has_link_argument', '0.46.0')
    @noKwargs
    @typed_pos_args('compiler.has_link_argument', str)
    def has_link_argument_method(self, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> bool:
        return self._has_argument_impl([args[0]], mode=_TestMode.LINKER)

    @FeatureNew('compiler.has_multi_link_argument', '0.46.0')
    @noKwargs
    @typed_pos_args('compiler.has_multi_link_argument', varargs=str)
    def has_multi_link_arguments_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> bool:
        return self._has_argument_impl(args[0], mode=_TestMode.LINKER)

    @FeatureNew('compiler.get_supported_link_arguments', '0.46.0')
    @noKwargs
    @typed_pos_args('compiler.get_supported_link_arguments', varargs=str)
    def get_supported_link_arguments_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> T.List[str]:
        supported_args: T.List[str] = []
        for arg in args[0]:
            if self._has_argument_impl([arg], mode=_TestMode.LINKER):
                supported_args.append(arg)
        return supported_args

    @FeatureNew('compiler.first_supported_link_argument_method', '0.46.0')
    @noKwargs
    @typed_pos_args('compiler.first_supported_link_argument', varargs=str)
    def first_supported_link_argument_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> T.List[str]:
        for arg in args[0]:
            if self._has_argument_impl([arg], mode=_TestMode.LINKER):
                mlog.log('First supported link argument:', mlog.bold(arg))
                return [arg]
        mlog.log('First supported link argument:', mlog.red('None'))
        return []

    def _has_function_attribute_impl(self, attr: str) -> bool:
        """Common helper for function attribute testing."""
        result, cached = self.compiler.has_func_attribute(attr, self.environment)
        cached_msg = mlog.blue('(cached)') if cached else ''
        h = mlog.green('YES') if result else mlog.red('NO')
        mlog.log('Compiler for {} supports function attribute {}:'.format(self.compiler.get_display_language(), attr), h, cached_msg)
        return result

    @FeatureNew('compiler.has_function_attribute', '0.48.0')
    @noKwargs
    @typed_pos_args('compiler.has_function_attribute', str)
    def has_func_attribute_method(self, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> bool:
        return self._has_function_attribute_impl(args[0])

    @FeatureNew('compiler.get_supported_function_attributes', '0.48.0')
    @noKwargs
    @typed_pos_args('compiler.get_supported_function_attributes', varargs=str)
    def get_supported_function_attributes_method(self, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> T.List[str]:
        return [a for a in args[0] if self._has_function_attribute_impl(a)]

    @FeatureNew('compiler.get_argument_syntax_method', '0.49.0')
    @noPosargs
    @noKwargs
    def get_argument_syntax_method(self, args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> str:
        return self.compiler.get_argument_syntax()