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# Copyright 2012-2023 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import copy
from . import mlog, mparser
import pickle, os, uuid
import sys
from itertools import chain
from pathlib import PurePath
from collections import OrderedDict
from .mesonlib import (
HoldableObject,
MesonException, EnvironmentException, MachineChoice, PerMachine,
PerMachineDefaultable, default_libdir, default_libexecdir,
default_prefix, default_datadir, default_includedir, default_infodir,
default_localedir, default_mandir, default_sbindir, default_sysconfdir,
split_args, OptionKey, OptionType, stringlistify,
pickle_load
)
from .wrap import WrapMode
import ast
import argparse
import configparser
import enum
import shlex
import typing as T
if T.TYPE_CHECKING:
from . import dependencies
from .compilers.compilers import Compiler, CompileResult, RunResult
from .dependencies.detect import TV_DepID
from .environment import Environment
from .mesonlib import OptionOverrideProxy, FileOrString
from .cmake.traceparser import CMakeCacheEntry
OptionDictType = T.Union[T.Dict[str, 'UserOption[T.Any]'], OptionOverrideProxy]
MutableKeyedOptionDictType = T.Dict['OptionKey', 'UserOption[T.Any]']
KeyedOptionDictType = T.Union[MutableKeyedOptionDictType, OptionOverrideProxy]
CompilerCheckCacheKey = T.Tuple[T.Tuple[str, ...], str, FileOrString, T.Tuple[str, ...], str]
# code, args
RunCheckCacheKey = T.Tuple[str, T.Tuple[str, ...]]
# typeshed
StrOrBytesPath = T.Union[str, bytes, os.PathLike[str], os.PathLike[bytes]]
# Check major_versions_differ() if changing versioning scheme.
#
# Pip requires that RCs are named like this: '0.1.0.rc1'
# But the corresponding Git tag needs to be '0.1.0rc1'
version = '1.1.99'
backendlist = ['ninja', 'vs', 'vs2010', 'vs2012', 'vs2013', 'vs2015', 'vs2017', 'vs2019', 'vs2022', 'xcode', 'none']
DEFAULT_YIELDING = False
# Can't bind this near the class method it seems, sadly.
_T = T.TypeVar('_T')
class MesonVersionMismatchException(MesonException):
'''Build directory generated with Meson version is incompatible with current version'''
def __init__(self, old_version: str, current_version: str) -> None:
super().__init__(f'Build directory has been generated with Meson version {old_version}, '
f'which is incompatible with the current version {current_version}.')
self.old_version = old_version
self.current_version = current_version
class UserOption(T.Generic[_T], HoldableObject):
def __init__(self, description: str, choices: T.Optional[T.Union[str, T.List[_T]]],
yielding: bool,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__()
self.choices = choices
self.description = description
if not isinstance(yielding, bool):
raise MesonException('Value of "yielding" must be a boolean.')
self.yielding = yielding
self.deprecated = deprecated
self.readonly = False
def listify(self, value: T.Any) -> T.List[T.Any]:
return [value]
def printable_value(self) -> T.Union[str, int, bool, T.List[T.Union[str, int, bool]]]:
assert isinstance(self.value, (str, int, bool, list))
return self.value
# Check that the input is a valid value and return the
# "cleaned" or "native" version. For example the Boolean
# option could take the string "true" and return True.
def validate_value(self, value: T.Any) -> _T:
raise RuntimeError('Derived option class did not override validate_value.')
def set_value(self, newvalue: T.Any) -> bool:
oldvalue = getattr(self, 'value', None)
self.value = self.validate_value(newvalue)
return self.value != oldvalue
class UserStringOption(UserOption[str]):
def __init__(self, description: str, value: T.Any, yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, None, yielding, deprecated)
self.set_value(value)
def validate_value(self, value: T.Any) -> str:
if not isinstance(value, str):
raise MesonException('Value "%s" for string option is not a string.' % str(value))
return value
class UserBooleanOption(UserOption[bool]):
def __init__(self, description: str, value, yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, [True, False], yielding, deprecated)
self.set_value(value)
def __bool__(self) -> bool:
return self.value
def validate_value(self, value: T.Any) -> bool:
if isinstance(value, bool):
return value
if not isinstance(value, str):
raise MesonException(f'Value {value} cannot be converted to a boolean')
if value.lower() == 'true':
return True
if value.lower() == 'false':
return False
raise MesonException('Value %s is not boolean (true or false).' % value)
class UserIntegerOption(UserOption[int]):
def __init__(self, description: str, value: T.Any, yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
min_value, max_value, default_value = value
self.min_value = min_value
self.max_value = max_value
c = []
if min_value is not None:
c.append('>=' + str(min_value))
if max_value is not None:
c.append('<=' + str(max_value))
choices = ', '.join(c)
super().__init__(description, choices, yielding, deprecated)
self.set_value(default_value)
def validate_value(self, value: T.Any) -> int:
if isinstance(value, str):
value = self.toint(value)
if not isinstance(value, int):
raise MesonException('New value for integer option is not an integer.')
if self.min_value is not None and value < self.min_value:
raise MesonException('New value %d is less than minimum value %d.' % (value, self.min_value))
if self.max_value is not None and value > self.max_value:
raise MesonException('New value %d is more than maximum value %d.' % (value, self.max_value))
return value
def toint(self, valuestring: str) -> int:
try:
return int(valuestring)
except ValueError:
raise MesonException('Value string "%s" is not convertible to an integer.' % valuestring)
class OctalInt(int):
# NinjaBackend.get_user_option_args uses str() to converts it to a command line option
# UserUmaskOption.toint() uses int(str, 8) to convert it to an integer
# So we need to use oct instead of dec here if we do not want values to be misinterpreted.
def __str__(self):
return oct(int(self))
class UserUmaskOption(UserIntegerOption, UserOption[T.Union[str, OctalInt]]):
def __init__(self, description: str, value: T.Any, yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, (0, 0o777, value), yielding, deprecated)
self.choices = ['preserve', '0000-0777']
def printable_value(self) -> str:
if self.value == 'preserve':
return self.value
return format(self.value, '04o')
def validate_value(self, value: T.Any) -> T.Union[str, OctalInt]:
if value == 'preserve':
return 'preserve'
return OctalInt(super().validate_value(value))
def toint(self, valuestring: T.Union[str, OctalInt]) -> int:
try:
return int(valuestring, 8)
except ValueError as e:
raise MesonException(f'Invalid mode: {e}')
class UserComboOption(UserOption[str]):
def __init__(self, description: str, choices: T.List[str], value: T.Any,
yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, choices, yielding, deprecated)
if not isinstance(self.choices, list):
raise MesonException('Combo choices must be an array.')
for i in self.choices:
if not isinstance(i, str):
raise MesonException('Combo choice elements must be strings.')
self.set_value(value)
def validate_value(self, value: T.Any) -> str:
if value not in self.choices:
if isinstance(value, bool):
_type = 'boolean'
elif isinstance(value, (int, float)):
_type = 'number'
else:
_type = 'string'
optionsstring = ', '.join([f'"{item}"' for item in self.choices])
raise MesonException('Value "{}" (of type "{}") for combo option "{}" is not one of the choices.'
' Possible choices are (as string): {}.'.format(
value, _type, self.description, optionsstring))
return value
class UserArrayOption(UserOption[T.List[str]]):
def __init__(self, description: str, value: T.Union[str, T.List[str]],
split_args: bool = False, user_input: bool = False,
allow_dups: bool = False, yielding: bool = DEFAULT_YIELDING,
choices: T.Optional[T.List[str]] = None,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, choices if choices is not None else [], yielding, deprecated)
self.split_args = split_args
self.allow_dups = allow_dups
self.value = self.validate_value(value, user_input=user_input)
def listify(self, value: T.Union[str, T.List[str]], user_input: bool = True) -> T.List[str]:
# User input is for options defined on the command line (via -D
# options). Users can put their input in as a comma separated
# string, but for defining options in meson_options.txt the format
# should match that of a combo
if not user_input and isinstance(value, str) and not value.startswith('['):
raise MesonException('Value does not define an array: ' + value)
if isinstance(value, str):
if value.startswith('['):
try:
newvalue = ast.literal_eval(value)
except ValueError:
raise MesonException(f'malformed option {value}')
elif value == '':
newvalue = []
else:
if self.split_args:
newvalue = split_args(value)
else:
newvalue = [v.strip() for v in value.split(',')]
elif isinstance(value, list):
newvalue = value
else:
raise MesonException(f'"{value}" should be a string array, but it is not')
return newvalue
def validate_value(self, value: T.Union[str, T.List[str]], user_input: bool = True) -> T.List[str]:
newvalue = self.listify(value, user_input)
if not self.allow_dups and len(set(newvalue)) != len(newvalue):
msg = 'Duplicated values in array option is deprecated. ' \
'This will become a hard error in the future.'
mlog.deprecation(msg)
for i in newvalue:
if not isinstance(i, str):
raise MesonException(f'String array element "{newvalue!s}" is not a string.')
if self.choices:
bad = [x for x in newvalue if x not in self.choices]
if bad:
raise MesonException('Options "{}" are not in allowed choices: "{}"'.format(
', '.join(bad), ', '.join(self.choices)))
return newvalue
def extend_value(self, value: T.Union[str, T.List[str]]) -> None:
"""Extend the value with an additional value."""
new = self.validate_value(value)
self.set_value(self.value + new)
class UserFeatureOption(UserComboOption):
static_choices = ['enabled', 'disabled', 'auto']
def __init__(self, description: str, value: T.Any, yielding: bool = DEFAULT_YIELDING,
deprecated: T.Union[bool, str, T.Dict[str, str], T.List[str]] = False):
super().__init__(description, self.static_choices, value, yielding, deprecated)
self.name: T.Optional[str] = None # TODO: Refactor options to all store their name
def is_enabled(self) -> bool:
return self.value == 'enabled'
def is_disabled(self) -> bool:
return self.value == 'disabled'
def is_auto(self) -> bool:
return self.value == 'auto'
class DependencyCacheType(enum.Enum):
OTHER = 0
PKG_CONFIG = 1
CMAKE = 2
@classmethod
def from_type(cls, dep: 'dependencies.Dependency') -> 'DependencyCacheType':
from . import dependencies
# As more types gain search overrides they'll need to be added here
if isinstance(dep, dependencies.PkgConfigDependency):
return cls.PKG_CONFIG
if isinstance(dep, dependencies.CMakeDependency):
return cls.CMAKE
return cls.OTHER
class DependencySubCache:
def __init__(self, type_: DependencyCacheType):
self.types = [type_]
self.__cache: T.Dict[T.Tuple[str, ...], 'dependencies.Dependency'] = {}
def __getitem__(self, key: T.Tuple[str, ...]) -> 'dependencies.Dependency':
return self.__cache[key]
def __setitem__(self, key: T.Tuple[str, ...], value: 'dependencies.Dependency') -> None:
self.__cache[key] = value
def __contains__(self, key: T.Tuple[str, ...]) -> bool:
return key in self.__cache
def values(self) -> T.Iterable['dependencies.Dependency']:
return self.__cache.values()
class DependencyCache:
"""Class that stores a cache of dependencies.
This class is meant to encapsulate the fact that we need multiple keys to
successfully lookup by providing a simple get/put interface.
"""
def __init__(self, builtins: 'KeyedOptionDictType', for_machine: MachineChoice):
self.__cache = OrderedDict() # type: T.MutableMapping[TV_DepID, DependencySubCache]
self.__builtins = builtins
self.__pkg_conf_key = OptionKey('pkg_config_path', machine=for_machine)
self.__cmake_key = OptionKey('cmake_prefix_path', machine=for_machine)
def __calculate_subkey(self, type_: DependencyCacheType) -> T.Tuple[str, ...]:
data: T.Dict[str, T.List[str]] = {
DependencyCacheType.PKG_CONFIG: stringlistify(self.__builtins[self.__pkg_conf_key].value),
DependencyCacheType.CMAKE: stringlistify(self.__builtins[self.__cmake_key].value),
DependencyCacheType.OTHER: [],
}
assert type_ in data, 'Someone forgot to update subkey calculations for a new type'
return tuple(data[type_])
def __iter__(self) -> T.Iterator['TV_DepID']:
return self.keys()
def put(self, key: 'TV_DepID', dep: 'dependencies.Dependency') -> None:
t = DependencyCacheType.from_type(dep)
if key not in self.__cache:
self.__cache[key] = DependencySubCache(t)
subkey = self.__calculate_subkey(t)
self.__cache[key][subkey] = dep
def get(self, key: 'TV_DepID') -> T.Optional['dependencies.Dependency']:
"""Get a value from the cache.
If there is no cache entry then None will be returned.
"""
try:
val = self.__cache[key]
except KeyError:
return None
for t in val.types:
subkey = self.__calculate_subkey(t)
try:
return val[subkey]
except KeyError:
pass
return None
def values(self) -> T.Iterator['dependencies.Dependency']:
for c in self.__cache.values():
yield from c.values()
def keys(self) -> T.Iterator['TV_DepID']:
return iter(self.__cache.keys())
def items(self) -> T.Iterator[T.Tuple['TV_DepID', T.List['dependencies.Dependency']]]:
for k, v in self.__cache.items():
vs = []
for t in v.types:
subkey = self.__calculate_subkey(t)
if subkey in v:
vs.append(v[subkey])
yield k, vs
def clear(self) -> None:
self.__cache.clear()
class CMakeStateCache:
"""Class that stores internal CMake compiler states.
This cache is used to reduce the startup overhead of CMake by caching
all internal CMake compiler variables.
"""
def __init__(self) -> None:
self.__cache: T.Dict[str, T.Dict[str, T.List[str]]] = {}
self.cmake_cache: T.Dict[str, 'CMakeCacheEntry'] = {}
def __iter__(self) -> T.Iterator[T.Tuple[str, T.Dict[str, T.List[str]]]]:
return iter(self.__cache.items())
def items(self) -> T.Iterator[T.Tuple[str, T.Dict[str, T.List[str]]]]:
return iter(self.__cache.items())
def update(self, language: str, variables: T.Dict[str, T.List[str]]):
if language not in self.__cache:
self.__cache[language] = {}
self.__cache[language].update(variables)
@property
def languages(self) -> T.Set[str]:
return set(self.__cache.keys())
# Can't bind this near the class method it seems, sadly.
_V = T.TypeVar('_V')
# This class contains all data that must persist over multiple
# invocations of Meson. It is roughly the same thing as
# cmakecache.
class CoreData:
def __init__(self, options: argparse.Namespace, scratch_dir: str, meson_command: T.List[str]):
self.lang_guids = {
'default': '8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942',
'c': '8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942',
'cpp': '8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942',
'test': '3AC096D0-A1C2-E12C-1390-A8335801FDAB',
'directory': '2150E333-8FDC-42A3-9474-1A3956D46DE8',
}
self.test_guid = str(uuid.uuid4()).upper()
self.regen_guid = str(uuid.uuid4()).upper()
self.install_guid = str(uuid.uuid4()).upper()
self.meson_command = meson_command
self.target_guids = {}
self.version = version
self.options: 'MutableKeyedOptionDictType' = {}
self.cross_files = self.__load_config_files(options, scratch_dir, 'cross')
self.compilers = PerMachine(OrderedDict(), OrderedDict()) # type: PerMachine[T.Dict[str, Compiler]]
# Set of subprojects that have already been initialized once, this is
# required to be stored and reloaded with the coredata, as we don't
# want to overwrite options for such subprojects.
self.initialized_subprojects: T.Set[str] = set()
# For host == build configurations these caches should be the same.
self.deps: PerMachine[DependencyCache] = PerMachineDefaultable.default(
self.is_cross_build(),
DependencyCache(self.options, MachineChoice.BUILD),
DependencyCache(self.options, MachineChoice.HOST))
self.compiler_check_cache: T.Dict['CompilerCheckCacheKey', 'CompileResult'] = OrderedDict()
self.run_check_cache: T.Dict['RunCheckCacheKey', 'RunResult'] = OrderedDict()
# CMake cache
self.cmake_cache: PerMachine[CMakeStateCache] = PerMachine(CMakeStateCache(), CMakeStateCache())
# Only to print a warning if it changes between Meson invocations.
self.config_files = self.__load_config_files(options, scratch_dir, 'native')
self.builtin_options_libdir_cross_fixup()
self.init_builtins('')
@staticmethod
def __load_config_files(options: argparse.Namespace, scratch_dir: str, ftype: str) -> T.List[str]:
# Need to try and make the passed filenames absolute because when the
# files are parsed later we'll have chdir()d.
if ftype == 'cross':
filenames = options.cross_file
else:
filenames = options.native_file
if not filenames:
return []
found_invalid = [] # type: T.List[str]
missing = [] # type: T.List[str]
real = [] # type: T.List[str]
for i, f in enumerate(filenames):
f = os.path.expanduser(os.path.expandvars(f))
if os.path.exists(f):
if os.path.isfile(f):
real.append(os.path.abspath(f))
continue
elif os.path.isdir(f):
found_invalid.append(os.path.abspath(f))
else:
# in this case we've been passed some kind of pipe, copy
# the contents of that file into the meson private (scratch)
# directory so that it can be re-read when wiping/reconfiguring
copy = os.path.join(scratch_dir, f'{uuid.uuid4()}.{ftype}.ini')
with open(f, encoding='utf-8') as rf:
with open(copy, 'w', encoding='utf-8') as wf:
wf.write(rf.read())
real.append(copy)
# Also replace the command line argument, as the pipe
# probably won't exist on reconfigure
filenames[i] = copy
continue
if sys.platform != 'win32':
paths = [
os.environ.get('XDG_DATA_HOME', os.path.expanduser('~/.local/share')),
] + os.environ.get('XDG_DATA_DIRS', '/usr/local/share:/usr/share').split(':')
for path in paths:
path_to_try = os.path.join(path, 'meson', ftype, f)
if os.path.isfile(path_to_try):
real.append(path_to_try)
break
else:
missing.append(f)
else:
missing.append(f)
if missing:
if found_invalid:
mlog.log('Found invalid candidates for', ftype, 'file:', *found_invalid)
mlog.log('Could not find any valid candidate for', ftype, 'files:', *missing)
raise MesonException(f'Cannot find specified {ftype} file: {f}')
return real
def builtin_options_libdir_cross_fixup(self):
# By default set libdir to "lib" when cross compiling since
# getting the "system default" is always wrong on multiarch
# platforms as it gets a value like lib/x86_64-linux-gnu.
if self.cross_files:
BUILTIN_OPTIONS[OptionKey('libdir')].default = 'lib'
def sanitize_prefix(self, prefix):
prefix = os.path.expanduser(prefix)
if not os.path.isabs(prefix):
raise MesonException(f'prefix value {prefix!r} must be an absolute path')
if prefix.endswith('/') or prefix.endswith('\\'):
# On Windows we need to preserve the trailing slash if the
# string is of type 'C:\' because 'C:' is not an absolute path.
if len(prefix) == 3 and prefix[1] == ':':
pass
# If prefix is a single character, preserve it since it is
# the root directory.
elif len(prefix) == 1:
pass
else:
prefix = prefix[:-1]
return prefix
def sanitize_dir_option_value(self, prefix: str, option: OptionKey, value: T.Any) -> T.Any:
'''
If the option is an installation directory option, the value is an
absolute path and resides within prefix, return the value
as a path relative to the prefix. Otherwise, return it as is.
This way everyone can do f.ex, get_option('libdir') and usually get
the library directory relative to prefix, even though it really
should not be relied upon.
'''
try:
value = PurePath(value)
except TypeError:
return value
if option.name.endswith('dir') and value.is_absolute() and \
option not in BUILTIN_DIR_NOPREFIX_OPTIONS:
try:
# Try to relativize the path.
value = value.relative_to(prefix)
except ValueError:
# Path is not relative, let’s keep it as is.
pass
if '..' in value.parts:
raise MesonException(
f'The value of the \'{option}\' option is \'{value}\' but '
'directory options are not allowed to contain \'..\'.\n'
f'If you need a path outside of the {prefix!r} prefix, '
'please use an absolute path.'
)
# .as_posix() keeps the posix-like file separators Meson uses.
return value.as_posix()
def init_builtins(self, subproject: str) -> None:
# Create builtin options with default values
for key, opt in BUILTIN_OPTIONS.items():
self.add_builtin_option(self.options, key.evolve(subproject=subproject), opt)
for for_machine in iter(MachineChoice):
for key, opt in BUILTIN_OPTIONS_PER_MACHINE.items():
self.add_builtin_option(self.options, key.evolve(subproject=subproject, machine=for_machine), opt)
@staticmethod
def add_builtin_option(opts_map: 'MutableKeyedOptionDictType', key: OptionKey,
opt: 'BuiltinOption') -> None:
if key.subproject:
if opt.yielding:
# This option is global and not per-subproject
return
value = opts_map[key.as_root()].value
else:
value = None
opts_map[key] = opt.init_option(key, value, default_prefix())
def init_backend_options(self, backend_name: str) -> None:
if backend_name == 'ninja':
self.options[OptionKey('backend_max_links')] = UserIntegerOption(
'Maximum number of linker processes to run or 0 for no '
'limit',
(0, None, 0))
elif backend_name.startswith('vs'):
self.options[OptionKey('backend_startup_project')] = UserStringOption(
'Default project to execute in Visual Studio',
'')
def get_option(self, key: OptionKey) -> T.Union[T.List[str], str, int, bool, WrapMode]:
try:
v = self.options[key].value
if key.name == 'wrap_mode':
return WrapMode[v]
return v
except KeyError:
pass
try:
v = self.options[key.as_root()]
if v.yielding:
if key.name == 'wrap_mode':
return WrapMode[v.value]
return v.value
except KeyError:
pass
raise MesonException(f'Tried to get unknown builtin option {str(key)}')
def set_option(self, key: OptionKey, value, first_invocation: bool = False) -> bool:
dirty = False
if key.is_builtin():
if key.name == 'prefix':
value = self.sanitize_prefix(value)
else:
prefix = self.options[OptionKey('prefix')].value
value = self.sanitize_dir_option_value(prefix, key, value)
try:
opt = self.options[key]
except KeyError:
raise MesonException(f'Tried to set unknown builtin option {str(key)}')
if opt.deprecated is True:
mlog.deprecation(f'Option {key.name!r} is deprecated')
elif isinstance(opt.deprecated, list):
for v in opt.listify(value):
if v in opt.deprecated:
mlog.deprecation(f'Option {key.name!r} value {v!r} is deprecated')
elif isinstance(opt.deprecated, dict):
def replace(v):
newvalue = opt.deprecated.get(v)
if newvalue is not None:
mlog.deprecation(f'Option {key.name!r} value {v!r} is replaced by {newvalue!r}')
return newvalue
return v
newvalue = [replace(v) for v in opt.listify(value)]
value = ','.join(newvalue)
elif isinstance(opt.deprecated, str):
# Option is deprecated and replaced by another. Note that a project
# option could be replaced by a built-in or module option, which is
# why we use OptionKey.from_string(newname) instead of
# key.evolve(newname). We set the value on both the old and new names,
# assuming they accept the same value. That could for example be
# achieved by adding the values from old option as deprecated on the
# new option, for example in the case of boolean option is replaced
# by a feature option with a different name.
newname = opt.deprecated
newkey = OptionKey.from_string(newname).evolve(subproject=key.subproject)
mlog.deprecation(f'Option {key.name!r} is replaced by {newname!r}')
dirty |= self.set_option(newkey, value, first_invocation)
changed = opt.set_value(value)
if changed and opt.readonly and not first_invocation:
raise MesonException(f'Tried modify read only option {str(key)!r}')
dirty |= changed
if key.name == 'buildtype':
dirty |= self._set_others_from_buildtype(value)
return dirty
def clear_deps_cache(self):
self.deps.host.clear()
self.deps.build.clear()
def get_nondefault_buildtype_args(self):
result = []
value = self.options[OptionKey('buildtype')].value
if value == 'plain':
opt = 'plain'
debug = False
elif value == 'debug':
opt = '0'
debug = True
elif value == 'debugoptimized':
opt = '2'
debug = True
elif value == 'release':
opt = '3'
debug = False
elif value == 'minsize':
opt = 's'
debug = True
else:
assert value == 'custom'
return []
actual_opt = self.options[OptionKey('optimization')].value
actual_debug = self.options[OptionKey('debug')].value
if actual_opt != opt:
result.append(('optimization', actual_opt, opt))
if actual_debug != debug:
result.append(('debug', actual_debug, debug))
return result
def _set_others_from_buildtype(self, value: str) -> bool:
dirty = False
if value == 'plain':
opt = 'plain'
debug = False
elif value == 'debug':
opt = '0'
debug = True
elif value == 'debugoptimized':
opt = '2'
debug = True
elif value == 'release':
opt = '3'
debug = False
elif value == 'minsize':
opt = 's'
debug = True
else:
assert value == 'custom'
return False
dirty |= self.options[OptionKey('optimization')].set_value(opt)
dirty |= self.options[OptionKey('debug')].set_value(debug)
return dirty
@staticmethod
def is_per_machine_option(optname: OptionKey) -> bool:
if optname.name in BUILTIN_OPTIONS_PER_MACHINE:
return True
return optname.lang is not None
def get_external_args(self, for_machine: MachineChoice, lang: str) -> T.List[str]:
return self.options[OptionKey('args', machine=for_machine, lang=lang)].value
def get_external_link_args(self, for_machine: MachineChoice, lang: str) -> T.List[str]:
return self.options[OptionKey('link_args', machine=for_machine, lang=lang)].value
def update_project_options(self, options: 'MutableKeyedOptionDictType') -> None:
for key, value in options.items():
if not key.is_project():
continue
if key not in self.options:
self.options[key] = value
continue
oldval = self.options[key]
if type(oldval) != type(value):
self.options[key] = value
elif oldval.choices != value.choices:
# If the choices have changed, use the new value, but attempt
# to keep the old options. If they are not valid keep the new
# defaults but warn.
self.options[key] = value
try:
value.set_value(oldval.value)
except MesonException:
mlog.warning(f'Old value(s) of {key} are no longer valid, resetting to default ({value.value}).',
fatal=False)
def is_cross_build(self, when_building_for: MachineChoice = MachineChoice.HOST) -> bool:
if when_building_for == MachineChoice.BUILD:
return False
return len(self.cross_files) > 0
def copy_build_options_from_regular_ones(self) -> bool:
dirty = False
assert not self.is_cross_build()
for k in BUILTIN_OPTIONS_PER_MACHINE:
o = self.options[k]
dirty |= self.options[k.as_build()].set_value(o.value)
for bk, bv in self.options.items():
if bk.machine is MachineChoice.BUILD:
hk = bk.as_host()
try:
hv = self.options[hk]
dirty |= bv.set_value(hv.value)
except KeyError:
continue
return dirty
def set_options(self, options: T.Dict[OptionKey, T.Any], subproject: str = '', first_invocation: bool = False) -> bool:
dirty = False
if not self.is_cross_build():
options = {k: v for k, v in options.items() if k.machine is not MachineChoice.BUILD}
# Set prefix first because it's needed to sanitize other options
pfk = OptionKey('prefix')
if pfk in options:
prefix = self.sanitize_prefix(options[pfk])
dirty |= self.options[OptionKey('prefix')].set_value(prefix)
for key in BUILTIN_DIR_NOPREFIX_OPTIONS:
if key not in options:
dirty |= self.options[key].set_value(BUILTIN_OPTIONS[key].prefixed_default(key, prefix))
unknown_options: T.List[OptionKey] = []
for k, v in options.items():
if k == pfk:
continue
elif k in self.options:
dirty |= self.set_option(k, v, first_invocation)
elif k.machine != MachineChoice.BUILD and k.type != OptionType.COMPILER:
unknown_options.append(k)
if unknown_options:
unknown_options_str = ', '.join(sorted(str(s) for s in unknown_options))
sub = f'In subproject {subproject}: ' if subproject else ''
raise MesonException(f'{sub}Unknown options: "{unknown_options_str}"')
if not self.is_cross_build():
dirty |= self.copy_build_options_from_regular_ones()
return dirty
def set_default_options(self, default_options: T.MutableMapping[OptionKey, str], subproject: str, env: 'Environment') -> None:
# Main project can set default options on subprojects, but subprojects
# can only set default options on themselves.
# Preserve order: if env.options has 'buildtype' it must come after
# 'optimization' if it is in default_options.
options: T.MutableMapping[OptionKey, T.Any] = OrderedDict()
for k, v in default_options.items():
if not subproject or k.subproject == subproject:
options[k] = v
options.update(env.options)
env.options = options
# Create a subset of options, keeping only project and builtin
# options for this subproject.
# Language and backend specific options will be set later when adding
# languages and setting the backend (builtin options must be set first
# to know which backend we'll use).
options = OrderedDict()
for k, v in env.options.items():
# If this is a subproject, don't use other subproject options
if k.subproject and k.subproject != subproject:
continue
# If the option is a builtin and is yielding then it's not allowed per subproject.
#
# Always test this using the HOST machine, as many builtin options
# are not valid for the BUILD machine, but the yielding value does
# not differ between them even when they are valid for both.
if subproject and k.is_builtin() and self.options[k.evolve(subproject='', machine=MachineChoice.HOST)].yielding:
continue
# Skip base, compiler, and backend options, they are handled when
# adding languages and setting backend.
if k.type in {OptionType.COMPILER, OptionType.BACKEND, OptionType.BASE}:
continue
options[k] = v
self.set_options(options, subproject=subproject, first_invocation=env.first_invocation)
def add_compiler_options(self, options: 'MutableKeyedOptionDictType', lang: str, for_machine: MachineChoice,
env: 'Environment') -> None:
for k, o in options.items():
value = env.options.get(k)
if value is not None:
o.set_value(value)
self.options.setdefault(k, o)
def add_lang_args(self, lang: str, comp: T.Type['Compiler'],
for_machine: MachineChoice, env: 'Environment') -> None:
"""Add global language arguments that are needed before compiler/linker detection."""
from .compilers import compilers
# These options are all new at this point, because the compiler is
# responsible for adding its own options, thus calling
# `self.options.update()`` is perfectly safe.
self.options.update(compilers.get_global_options(lang, comp, for_machine, env))
def process_new_compiler(self, lang: str, comp: 'Compiler', env: 'Environment') -> None:
from . import compilers
self.add_compiler_options(comp.get_options(), lang, comp.for_machine, env)
enabled_opts: T.List[OptionKey] = []
for key in comp.base_options:
if key in self.options:
continue
oobj = copy.deepcopy(compilers.base_options[key])
if key in env.options:
oobj.set_value(env.options[key])
enabled_opts.append(key)
self.options[key] = oobj
self.emit_base_options_warnings(enabled_opts)
def emit_base_options_warnings(self, enabled_opts: T.List[OptionKey]) -> None:
if OptionKey('b_bitcode') in enabled_opts:
mlog.warning('Base option \'b_bitcode\' is enabled, which is incompatible with many linker options. Incompatible options such as \'b_asneeded\' have been disabled.', fatal=False)
mlog.warning('Please see https://mesonbuild.com/Builtin-options.html#Notes_about_Apple_Bitcode_support for more details.', fatal=False)
class CmdLineFileParser(configparser.ConfigParser):
def __init__(self) -> None:
# We don't want ':' as key delimiter, otherwise it would break when
# storing subproject options like "subproject:option=value"
super().__init__(delimiters=['='], interpolation=None)
def read(self, filenames: T.Union['StrOrBytesPath', T.Iterable['StrOrBytesPath']], encoding: str = 'utf-8') -> T.List[str]:
return super().read(filenames, encoding)
def optionxform(self, option: str) -> str:
# Don't call str.lower() on keys
return option
class MachineFileParser():
def __init__(self, filenames: T.List[str]) -> None:
self.parser = CmdLineFileParser()
self.constants = {'True': True, 'False': False}
self.sections = {}
self.parser.read(filenames)
# Parse [constants] first so they can be used in other sections
if self.parser.has_section('constants'):
self.constants.update(self._parse_section('constants'))
for s in self.parser.sections():
if s == 'constants':
continue
self.sections[s] = self._parse_section(s)
def _parse_section(self, s):
self.scope = self.constants.copy()
section = {}
for entry, value in self.parser.items(s):
if ' ' in entry or '\t' in entry or "'" in entry or '"' in entry:
raise EnvironmentException(f'Malformed variable name {entry!r} in machine file.')
# Windows paths...
value = value.replace('\\', '\\\\')
try:
ast = mparser.Parser(value, 'machinefile').parse()
res = self._evaluate_statement(ast.lines[0])
except MesonException:
raise EnvironmentException(f'Malformed value in machine file variable {entry!r}.')
except KeyError as e:
raise EnvironmentException(f'Undefined constant {e.args[0]!r} in machine file variable {entry!r}.')
section[entry] = res
self.scope[entry] = res
return section
def _evaluate_statement(self, node):
if isinstance(node, (mparser.StringNode)):
return node.value
elif isinstance(node, mparser.BooleanNode):
return node.value
elif isinstance(node, mparser.NumberNode):
return node.value
elif isinstance(node, mparser.ArrayNode):
return [self._evaluate_statement(arg) for arg in node.args.arguments]
elif isinstance(node, mparser.IdNode):
return self.scope[node.value]
elif isinstance(node, mparser.ArithmeticNode):
l = self._evaluate_statement(node.left)
r = self._evaluate_statement(node.right)
if node.operation == 'add':
if (isinstance(l, str) and isinstance(r, str)) or \
(isinstance(l, list) and isinstance(r, list)):
return l + r
elif node.operation == 'div':
if isinstance(l, str) and isinstance(r, str):
return os.path.join(l, r)
raise EnvironmentException('Unsupported node type')
def parse_machine_files(filenames):
parser = MachineFileParser(filenames)
return parser.sections
def get_cmd_line_file(build_dir: str) -> str:
return os.path.join(build_dir, 'meson-private', 'cmd_line.txt')
def read_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
filename = get_cmd_line_file(build_dir)
if not os.path.isfile(filename):
return
config = CmdLineFileParser()
config.read(filename)
# Do a copy because config is not really a dict. options.cmd_line_options
# overrides values from the file.
d = {OptionKey.from_string(k): v for k, v in config['options'].items()}
d.update(options.cmd_line_options)
options.cmd_line_options = d
properties = config['properties']
if not options.cross_file:
options.cross_file = ast.literal_eval(properties.get('cross_file', '[]'))
if not options.native_file:
# This will be a string in the form: "['first', 'second', ...]", use
# literal_eval to get it into the list of strings.
options.native_file = ast.literal_eval(properties.get('native_file', '[]'))
def write_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
filename = get_cmd_line_file(build_dir)
config = CmdLineFileParser()
properties = OrderedDict()
if options.cross_file:
properties['cross_file'] = options.cross_file
if options.native_file:
properties['native_file'] = options.native_file
config['options'] = {str(k): str(v) for k, v in options.cmd_line_options.items()}
config['properties'] = properties
with open(filename, 'w', encoding='utf-8') as f:
config.write(f)
def update_cmd_line_file(build_dir: str, options: argparse.Namespace):
filename = get_cmd_line_file(build_dir)
config = CmdLineFileParser()
config.read(filename)
config['options'].update({str(k): str(v) for k, v in options.cmd_line_options.items()})
with open(filename, 'w', encoding='utf-8') as f:
config.write(f)
def format_cmd_line_options(options: argparse.Namespace) -> str:
cmdline = ['-D{}={}'.format(str(k), v) for k, v in options.cmd_line_options.items()]
if options.cross_file:
cmdline += [f'--cross-file={f}' for f in options.cross_file]
if options.native_file:
cmdline += [f'--native-file={f}' for f in options.native_file]
return ' '.join([shlex.quote(x) for x in cmdline])
def major_versions_differ(v1: str, v2: str) -> bool:
v1_major, v1_minor = v1.rsplit('.', 1)
v2_major, v2_minor = v2.rsplit('.', 1)
# Major version differ, or one is development version but not the other.
return v1_major != v2_major or ('99' in {v1_minor, v2_minor} and v1_minor != v2_minor)
def load(build_dir: str) -> CoreData:
filename = os.path.join(build_dir, 'meson-private', 'coredata.dat')
return pickle_load(filename, 'Coredata', CoreData)
def save(obj: CoreData, build_dir: str) -> str:
filename = os.path.join(build_dir, 'meson-private', 'coredata.dat')
prev_filename = filename + '.prev'
tempfilename = filename + '~'
if major_versions_differ(obj.version, version):
raise MesonException('Fatal version mismatch corruption.')
if os.path.exists(filename):
import shutil
shutil.copyfile(filename, prev_filename)
with open(tempfilename, 'wb') as f:
pickle.dump(obj, f)
f.flush()
os.fsync(f.fileno())
os.replace(tempfilename, filename)
return filename
def register_builtin_arguments(parser: argparse.ArgumentParser) -> None:
for n, b in BUILTIN_OPTIONS.items():
b.add_to_argparse(str(n), parser, '')
for n, b in BUILTIN_OPTIONS_PER_MACHINE.items():
b.add_to_argparse(str(n), parser, ' (just for host machine)')
b.add_to_argparse(str(n.as_build()), parser, ' (just for build machine)')
parser.add_argument('-D', action='append', dest='projectoptions', default=[], metavar="option",
help='Set the value of an option, can be used several times to set multiple options.')
def create_options_dict(options: T.List[str], subproject: str = '') -> T.Dict[OptionKey, str]:
result: T.OrderedDict[OptionKey, str] = OrderedDict()
for o in options:
try:
(key, value) = o.split('=', 1)
except ValueError:
raise MesonException(f'Option {o!r} must have a value separated by equals sign.')
k = OptionKey.from_string(key)
if subproject:
k = k.evolve(subproject=subproject)
result[k] = value
return result
def parse_cmd_line_options(args: argparse.Namespace) -> None:
args.cmd_line_options = create_options_dict(args.projectoptions)
# Merge builtin options set with --option into the dict.
for key in chain(
BUILTIN_OPTIONS.keys(),
(k.as_build() for k in BUILTIN_OPTIONS_PER_MACHINE.keys()),
BUILTIN_OPTIONS_PER_MACHINE.keys(),
):
name = str(key)
value = getattr(args, name, None)
if value is not None:
if key in args.cmd_line_options:
cmdline_name = BuiltinOption.argparse_name_to_arg(name)
raise MesonException(
f'Got argument {name} as both -D{name} and {cmdline_name}. Pick one.')
args.cmd_line_options[key] = value
delattr(args, name)
_U = T.TypeVar('_U', bound=UserOption[_T])
class BuiltinOption(T.Generic[_T, _U]):
"""Class for a builtin option type.
There are some cases that are not fully supported yet.
"""
def __init__(self, opt_type: T.Type[_U], description: str, default: T.Any, yielding: bool = True, *,
choices: T.Any = None, readonly: bool = False):
self.opt_type = opt_type
self.description = description
self.default = default
self.choices = choices
self.yielding = yielding
self.readonly = readonly
def init_option(self, name: 'OptionKey', value: T.Optional[T.Any], prefix: str) -> _U:
"""Create an instance of opt_type and return it."""
if value is None:
value = self.prefixed_default(name, prefix)
keywords = {'yielding': self.yielding, 'value': value}
if self.choices:
keywords['choices'] = self.choices
o = self.opt_type(self.description, **keywords)
o.readonly = self.readonly
return o
def _argparse_action(self) -> T.Optional[str]:
# If the type is a boolean, the presence of the argument in --foo form
# is to enable it. Disabling happens by using -Dfoo=false, which is
# parsed under `args.projectoptions` and does not hit this codepath.
if isinstance(self.default, bool):
return 'store_true'
return None
def _argparse_choices(self) -> T.Any:
if self.opt_type is UserBooleanOption:
return [True, False]
elif self.opt_type is UserFeatureOption:
return UserFeatureOption.static_choices
return self.choices
@staticmethod
def argparse_name_to_arg(name: str) -> str:
if name == 'warning_level':
return '--warnlevel'
else:
return '--' + name.replace('_', '-')
def prefixed_default(self, name: 'OptionKey', prefix: str = '') -> T.Any:
if self.opt_type in [UserComboOption, UserIntegerOption]:
return self.default
try:
return BUILTIN_DIR_NOPREFIX_OPTIONS[name][prefix]
except KeyError:
pass
return self.default
def add_to_argparse(self, name: str, parser: argparse.ArgumentParser, help_suffix: str) -> None:
kwargs = OrderedDict()
c = self._argparse_choices()
b = self._argparse_action()
h = self.description
if not b:
h = '{} (default: {}).'.format(h.rstrip('.'), self.prefixed_default(name))
else:
kwargs['action'] = b
if c and not b:
kwargs['choices'] = c
kwargs['default'] = argparse.SUPPRESS
kwargs['dest'] = name
cmdline_name = self.argparse_name_to_arg(name)
parser.add_argument(cmdline_name, help=h + help_suffix, **kwargs)
# Update `docs/markdown/Builtin-options.md` after changing the options below
# Also update mesonlib._BUILTIN_NAMES. See the comment there for why this is required.
BUILTIN_DIR_OPTIONS: 'MutableKeyedOptionDictType' = OrderedDict([
(OptionKey('prefix'), BuiltinOption(UserStringOption, 'Installation prefix', default_prefix())),
(OptionKey('bindir'), BuiltinOption(UserStringOption, 'Executable directory', 'bin')),
(OptionKey('datadir'), BuiltinOption(UserStringOption, 'Data file directory', default_datadir())),
(OptionKey('includedir'), BuiltinOption(UserStringOption, 'Header file directory', default_includedir())),
(OptionKey('infodir'), BuiltinOption(UserStringOption, 'Info page directory', default_infodir())),
(OptionKey('libdir'), BuiltinOption(UserStringOption, 'Library directory', default_libdir())),
(OptionKey('licensedir'), BuiltinOption(UserStringOption, 'Licenses directory', '')),
(OptionKey('libexecdir'), BuiltinOption(UserStringOption, 'Library executable directory', default_libexecdir())),
(OptionKey('localedir'), BuiltinOption(UserStringOption, 'Locale data directory', default_localedir())),
(OptionKey('localstatedir'), BuiltinOption(UserStringOption, 'Localstate data directory', 'var')),
(OptionKey('mandir'), BuiltinOption(UserStringOption, 'Manual page directory', default_mandir())),
(OptionKey('sbindir'), BuiltinOption(UserStringOption, 'System executable directory', default_sbindir())),
(OptionKey('sharedstatedir'), BuiltinOption(UserStringOption, 'Architecture-independent data directory', 'com')),
(OptionKey('sysconfdir'), BuiltinOption(UserStringOption, 'Sysconf data directory', default_sysconfdir())),
])
BUILTIN_CORE_OPTIONS: 'MutableKeyedOptionDictType' = OrderedDict([
(OptionKey('auto_features'), BuiltinOption(UserFeatureOption, "Override value of all 'auto' features", 'auto')),
(OptionKey('backend'), BuiltinOption(UserComboOption, 'Backend to use', 'ninja', choices=backendlist,
readonly=True)),
(OptionKey('buildtype'), BuiltinOption(UserComboOption, 'Build type to use', 'debug',
choices=['plain', 'debug', 'debugoptimized', 'release', 'minsize', 'custom'])),
(OptionKey('debug'), BuiltinOption(UserBooleanOption, 'Enable debug symbols and other information', True)),
(OptionKey('default_library'), BuiltinOption(UserComboOption, 'Default library type', 'shared', choices=['shared', 'static', 'both'],
yielding=False)),
(OptionKey('errorlogs'), BuiltinOption(UserBooleanOption, "Whether to print the logs from failing tests", True)),
(OptionKey('install_umask'), BuiltinOption(UserUmaskOption, 'Default umask to apply on permissions of installed files', '022')),
(OptionKey('layout'), BuiltinOption(UserComboOption, 'Build directory layout', 'mirror', choices=['mirror', 'flat'])),
(OptionKey('optimization'), BuiltinOption(UserComboOption, 'Optimization level', '0', choices=['plain', '0', 'g', '1', '2', '3', 's'])),
(OptionKey('prefer_static'), BuiltinOption(UserBooleanOption, 'Whether to try static linking before shared linking', False)),
(OptionKey('stdsplit'), BuiltinOption(UserBooleanOption, 'Split stdout and stderr in test logs', True)),
(OptionKey('strip'), BuiltinOption(UserBooleanOption, 'Strip targets on install', False)),
(OptionKey('unity'), BuiltinOption(UserComboOption, 'Unity build', 'off', choices=['on', 'off', 'subprojects'])),
(OptionKey('unity_size'), BuiltinOption(UserIntegerOption, 'Unity block size', (2, None, 4))),
(OptionKey('warning_level'), BuiltinOption(UserComboOption, 'Compiler warning level to use', '1', choices=['0', '1', '2', '3', 'everything'], yielding=False)),
(OptionKey('werror'), BuiltinOption(UserBooleanOption, 'Treat warnings as errors', False, yielding=False)),
(OptionKey('wrap_mode'), BuiltinOption(UserComboOption, 'Wrap mode', 'default', choices=['default', 'nofallback', 'nodownload', 'forcefallback', 'nopromote'])),
(OptionKey('force_fallback_for'), BuiltinOption(UserArrayOption, 'Force fallback for those subprojects', [])),
(OptionKey('vsenv'), BuiltinOption(UserBooleanOption, 'Activate Visual Studio environment', False, readonly=True)),
# Pkgconfig module
(OptionKey('relocatable', module='pkgconfig'),
BuiltinOption(UserBooleanOption, 'Generate pkgconfig files as relocatable', False)),
# Python module
(OptionKey('bytecompile', module='python'),
BuiltinOption(UserIntegerOption, 'Whether to compile bytecode', (-1, 2, 0))),
(OptionKey('install_env', module='python'),
BuiltinOption(UserComboOption, 'Which python environment to install to', 'prefix', choices=['auto', 'prefix', 'system', 'venv'])),
(OptionKey('platlibdir', module='python'),
BuiltinOption(UserStringOption, 'Directory for site-specific, platform-specific files.', '')),
(OptionKey('purelibdir', module='python'),
BuiltinOption(UserStringOption, 'Directory for site-specific, non-platform-specific files.', '')),
])
BUILTIN_OPTIONS = OrderedDict(chain(BUILTIN_DIR_OPTIONS.items(), BUILTIN_CORE_OPTIONS.items()))
BUILTIN_OPTIONS_PER_MACHINE: 'MutableKeyedOptionDictType' = OrderedDict([
(OptionKey('pkg_config_path'), BuiltinOption(UserArrayOption, 'List of additional paths for pkg-config to search', [])),
(OptionKey('cmake_prefix_path'), BuiltinOption(UserArrayOption, 'List of additional prefixes for cmake to search', [])),
])
# Special prefix-dependent defaults for installation directories that reside in
# a path outside of the prefix in FHS and common usage.
BUILTIN_DIR_NOPREFIX_OPTIONS: T.Dict[OptionKey, T.Dict[str, str]] = {
OptionKey('sysconfdir'): {'/usr': '/etc'},
OptionKey('localstatedir'): {'/usr': '/var', '/usr/local': '/var/local'},
OptionKey('sharedstatedir'): {'/usr': '/var/lib', '/usr/local': '/var/local/lib'},
OptionKey('platlibdir', module='python'): {},
OptionKey('purelibdir', module='python'): {},
}
FORBIDDEN_TARGET_NAMES = frozenset({
'clean',
'clean-ctlist',
'clean-gcno',
'clean-gcda',
'coverage',
'coverage-text',
'coverage-xml',
'coverage-html',
'phony',
'PHONY',
'all',
'test',
'benchmark',
'install',
'uninstall',
'build.ninja',
'scan-build',
'reconfigure',
'dist',
'distcheck',
})