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- # Copyright 2012-2015 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.
- """A library of random helper functionality."""
- import functools
- import sys
- import stat
- import time
- import platform, subprocess, operator, os, shutil, re
- import collections
- from enum import Enum
- from functools import lru_cache
- from mesonbuild import mlog
- have_fcntl = False
- have_msvcrt = False
- # {subproject: project_meson_version}
- project_meson_versions = {}
- try:
- import fcntl
- have_fcntl = True
- except Exception:
- pass
- try:
- import msvcrt
- have_msvcrt = True
- except Exception:
- pass
- from glob import glob
- if os.path.basename(sys.executable) == 'meson.exe':
- # In Windows and using the MSI installed executable.
- python_command = [sys.executable, 'runpython']
- else:
- python_command = [sys.executable]
- meson_command = None
- def set_meson_command(mainfile):
- global python_command
- global meson_command
- # On UNIX-like systems `meson` is a Python script
- # On Windows `meson` and `meson.exe` are wrapper exes
- if not mainfile.endswith('.py'):
- meson_command = [mainfile]
- elif os.path.isabs(mainfile) and mainfile.endswith('mesonmain.py'):
- # Can't actually run meson with an absolute path to mesonmain.py, it must be run as -m mesonbuild.mesonmain
- meson_command = python_command + ['-m', 'mesonbuild.mesonmain']
- else:
- # Either run uninstalled, or full path to meson-script.py
- meson_command = python_command + [mainfile]
- # We print this value for unit tests.
- if 'MESON_COMMAND_TESTS' in os.environ:
- mlog.log('meson_command is {!r}'.format(meson_command))
- def is_ascii_string(astring):
- try:
- if isinstance(astring, str):
- astring.encode('ascii')
- if isinstance(astring, bytes):
- astring.decode('ascii')
- except UnicodeDecodeError:
- return False
- return True
- def check_direntry_issues(direntry_array):
- import locale
- # Warn if the locale is not UTF-8. This can cause various unfixable issues
- # such as os.stat not being able to decode filenames with unicode in them.
- # There is no way to reset both the preferred encoding and the filesystem
- # encoding, so we can just warn about it.
- e = locale.getpreferredencoding()
- if e.upper() != 'UTF-8' and not is_windows():
- if not isinstance(direntry_array, list):
- direntry_array = [direntry_array]
- for de in direntry_array:
- if is_ascii_string(de):
- continue
- mlog.warning('''You are using {!r} which is not a Unicode-compatible '
- locale but you are trying to access a file system entry called {!r} which is
- not pure ASCII. This may cause problems.
- '''.format(e, de), file=sys.stderr)
- # Put this in objects that should not get dumped to pickle files
- # by accident.
- import threading
- an_unpicklable_object = threading.Lock()
- class MesonException(Exception):
- '''Exceptions thrown by Meson'''
- def get_msg_with_context(self):
- s = ''
- if hasattr(self, 'lineno') and hasattr(self, 'file'):
- s = get_error_location_string(self.file, self.lineno) + ' '
- s += str(self)
- return s
- class EnvironmentException(MesonException):
- '''Exceptions thrown while processing and creating the build environment'''
- class FileMode:
- # The first triad is for owner permissions, the second for group permissions,
- # and the third for others (everyone else).
- # For the 1st character:
- # 'r' means can read
- # '-' means not allowed
- # For the 2nd character:
- # 'w' means can write
- # '-' means not allowed
- # For the 3rd character:
- # 'x' means can execute
- # 's' means can execute and setuid/setgid is set (owner/group triads only)
- # 'S' means cannot execute and setuid/setgid is set (owner/group triads only)
- # 't' means can execute and sticky bit is set ("others" triads only)
- # 'T' means cannot execute and sticky bit is set ("others" triads only)
- # '-' means none of these are allowed
- #
- # The meanings of 'rwx' perms is not obvious for directories; see:
- # https://www.hackinglinuxexposed.com/articles/20030424.html
- #
- # For information on this notation such as setuid/setgid/sticky bits, see:
- # https://en.wikipedia.org/wiki/File_system_permissions#Symbolic_notation
- symbolic_perms_regex = re.compile('[r-][w-][xsS-]' # Owner perms
- '[r-][w-][xsS-]' # Group perms
- '[r-][w-][xtT-]') # Others perms
- def __init__(self, perms=None, owner=None, group=None):
- self.perms_s = perms
- self.perms = self.perms_s_to_bits(perms)
- self.owner = owner
- self.group = group
- def __repr__(self):
- ret = '<FileMode: {!r} owner={} group={}'
- return ret.format(self.perms_s, self.owner, self.group)
- @classmethod
- def perms_s_to_bits(cls, perms_s):
- '''
- Does the opposite of stat.filemode(), converts strings of the form
- 'rwxr-xr-x' to st_mode enums which can be passed to os.chmod()
- '''
- if perms_s is None:
- # No perms specified, we will not touch the permissions
- return -1
- eg = 'rwxr-xr-x'
- if not isinstance(perms_s, str):
- msg = 'Install perms must be a string. For example, {!r}'
- raise MesonException(msg.format(eg))
- if len(perms_s) != 9 or not cls.symbolic_perms_regex.match(perms_s):
- msg = 'File perms {!r} must be exactly 9 chars. For example, {!r}'
- raise MesonException(msg.format(perms_s, eg))
- perms = 0
- # Owner perms
- if perms_s[0] == 'r':
- perms |= stat.S_IRUSR
- if perms_s[1] == 'w':
- perms |= stat.S_IWUSR
- if perms_s[2] == 'x':
- perms |= stat.S_IXUSR
- elif perms_s[2] == 'S':
- perms |= stat.S_ISUID
- elif perms_s[2] == 's':
- perms |= stat.S_IXUSR
- perms |= stat.S_ISUID
- # Group perms
- if perms_s[3] == 'r':
- perms |= stat.S_IRGRP
- if perms_s[4] == 'w':
- perms |= stat.S_IWGRP
- if perms_s[5] == 'x':
- perms |= stat.S_IXGRP
- elif perms_s[5] == 'S':
- perms |= stat.S_ISGID
- elif perms_s[5] == 's':
- perms |= stat.S_IXGRP
- perms |= stat.S_ISGID
- # Others perms
- if perms_s[6] == 'r':
- perms |= stat.S_IROTH
- if perms_s[7] == 'w':
- perms |= stat.S_IWOTH
- if perms_s[8] == 'x':
- perms |= stat.S_IXOTH
- elif perms_s[8] == 'T':
- perms |= stat.S_ISVTX
- elif perms_s[8] == 't':
- perms |= stat.S_IXOTH
- perms |= stat.S_ISVTX
- return perms
- class File:
- def __init__(self, is_built, subdir, fname):
- self.is_built = is_built
- self.subdir = subdir
- self.fname = fname
- assert(isinstance(self.subdir, str))
- assert(isinstance(self.fname, str))
- def __str__(self):
- return self.relative_name()
- def __repr__(self):
- ret = '<File: {0}'
- if not self.is_built:
- ret += ' (not built)'
- ret += '>'
- return ret.format(self.relative_name())
- @staticmethod
- @lru_cache(maxsize=None)
- def from_source_file(source_root, subdir, fname):
- if not os.path.isfile(os.path.join(source_root, subdir, fname)):
- raise MesonException('File %s does not exist.' % fname)
- return File(False, subdir, fname)
- @staticmethod
- def from_built_file(subdir, fname):
- return File(True, subdir, fname)
- @staticmethod
- def from_absolute_file(fname):
- return File(False, '', fname)
- @lru_cache(maxsize=None)
- def rel_to_builddir(self, build_to_src):
- if self.is_built:
- return self.relative_name()
- else:
- return os.path.join(build_to_src, self.subdir, self.fname)
- @lru_cache(maxsize=None)
- def absolute_path(self, srcdir, builddir):
- absdir = srcdir
- if self.is_built:
- absdir = builddir
- return os.path.join(absdir, self.relative_name())
- def endswith(self, ending):
- return self.fname.endswith(ending)
- def split(self, s):
- return self.fname.split(s)
- def __eq__(self, other):
- return (self.fname, self.subdir, self.is_built) == (other.fname, other.subdir, other.is_built)
- def __hash__(self):
- return hash((self.fname, self.subdir, self.is_built))
- @lru_cache(maxsize=None)
- def relative_name(self):
- return os.path.join(self.subdir, self.fname)
- def get_compiler_for_source(compilers, src):
- for comp in compilers:
- if comp.can_compile(src):
- return comp
- raise MesonException('No specified compiler can handle file {!s}'.format(src))
- def classify_unity_sources(compilers, sources):
- compsrclist = {}
- for src in sources:
- comp = get_compiler_for_source(compilers, src)
- if comp not in compsrclist:
- compsrclist[comp] = [src]
- else:
- compsrclist[comp].append(src)
- return compsrclist
- class OrderedEnum(Enum):
- """
- An Enum which additionally offers homogeneous ordered comparison.
- """
- def __ge__(self, other):
- if self.__class__ is other.__class__:
- return self.value >= other.value
- return NotImplemented
- def __gt__(self, other):
- if self.__class__ is other.__class__:
- return self.value > other.value
- return NotImplemented
- def __le__(self, other):
- if self.__class__ is other.__class__:
- return self.value <= other.value
- return NotImplemented
- def __lt__(self, other):
- if self.__class__ is other.__class__:
- return self.value < other.value
- return NotImplemented
- MachineChoice = OrderedEnum('MachineChoice', ['BUILD', 'HOST', 'TARGET'])
- class PerMachine:
- def __init__(self, build, host, target):
- self.build = build
- self.host = host
- self.target = target
- def __getitem__(self, machine: MachineChoice):
- return {
- MachineChoice.BUILD: self.build,
- MachineChoice.HOST: self.host,
- MachineChoice.TARGET: self.target
- }[machine]
- def __setitem__(self, machine: MachineChoice, val):
- key = {
- MachineChoice.BUILD: 'build',
- MachineChoice.HOST: 'host',
- MachineChoice.TARGET: 'target'
- }[machine]
- setattr(self, key, val)
- def is_osx():
- return platform.system().lower() == 'darwin'
- def is_linux():
- return platform.system().lower() == 'linux'
- def is_android():
- return platform.system().lower() == 'android'
- def is_haiku():
- return platform.system().lower() == 'haiku'
- def is_openbsd():
- return platform.system().lower() == 'openbsd'
- def is_windows():
- platname = platform.system().lower()
- return platname == 'windows' or 'mingw' in platname
- def is_cygwin():
- platname = platform.system().lower()
- return platname.startswith('cygwin')
- def is_debianlike():
- return os.path.isfile('/etc/debian_version')
- def is_dragonflybsd():
- return platform.system().lower() == 'dragonfly'
- def is_freebsd():
- return platform.system().lower() == 'freebsd'
- def _get_machine_is_cross(env, is_cross):
- """
- This is not morally correct, but works for now. For cross builds the build
- and host machines differ. `is_cross == true` means the host machine, while
- `is_cross == false` means the build machine. Both are used in practice,
- even though the documentation refers to the host machine implying we should
- hard-code it. For non-cross builds `is_cross == false` is passed but the
- host and build machines are identical so it doesn't matter.
- Users for `for_*` should instead specify up front which machine they want
- and query that like:
- env.machines[MachineChoice.HOST].is_haiku()
- """
- for_machine = MachineChoice.HOST if is_cross else MachineChoice.BUILD
- return env.machines[for_machine]
- def for_windows(is_cross, env):
- """
- Host machine is windows?
- Deprecated: Please use `env.machines[for_machine].is_windows()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_windows()
- def for_cygwin(is_cross, env):
- """
- Host machine is cygwin?
- Deprecated: Please use `env.machines[for_machine].is_cygwin()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_cygwin()
- def for_linux(is_cross, env):
- """
- Host machine is linux?
- Deprecated: Please use `env.machines[for_machine].is_linux()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_linux()
- def for_darwin(is_cross, env):
- """
- Host machine is Darwin (iOS/OS X)?
- Deprecated: Please use `env.machines[for_machine].is_darwin()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_darwin()
- def for_android(is_cross, env):
- """
- Host machine is Android?
- Deprecated: Please use `env.machines[for_machine].is_android()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_android()
- def for_haiku(is_cross, env):
- """
- Host machine is Haiku?
- Deprecated: Please use `env.machines[for_machine].is_haiku()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_haiku()
- def for_openbsd(is_cross, env):
- """
- Host machine is OpenBSD?
- Deprecated: Please use `env.machines[for_machine].is_openbsd()`.
- Note: 'host' is the machine on which compiled binaries will run
- """
- return _get_machine_is_cross(env, is_cross).is_openbsd()
- def exe_exists(arglist):
- try:
- p = subprocess.Popen(arglist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
- p.communicate()
- if p.returncode == 0:
- return True
- except FileNotFoundError:
- pass
- return False
- lru_cache(maxsize=None)
- def darwin_get_object_archs(objpath):
- '''
- For a specific object (executable, static library, dylib, etc), run `lipo`
- to fetch the list of archs supported by it. Supports both thin objects and
- 'fat' objects.
- '''
- _, stdo, stderr = Popen_safe(['lipo', '-info', objpath])
- if not stdo:
- mlog.debug('lipo {}: {}'.format(objpath, stderr))
- return None
- stdo = stdo.rsplit(': ', 1)[1]
- # Convert from lipo-style archs to meson-style CPUs
- stdo = stdo.replace('i386', 'x86')
- stdo = stdo.replace('arm64', 'aarch64')
- # Add generic name for armv7 and armv7s
- if 'armv7' in stdo:
- stdo += ' arm'
- return stdo.split()
- def detect_vcs(source_dir):
- vcs_systems = [
- dict(name = 'git', cmd = 'git', repo_dir = '.git', get_rev = 'git describe --dirty=+', rev_regex = '(.*)', dep = '.git/logs/HEAD'),
- dict(name = 'mercurial', cmd = 'hg', repo_dir = '.hg', get_rev = 'hg id -i', rev_regex = '(.*)', dep = '.hg/dirstate'),
- dict(name = 'subversion', cmd = 'svn', repo_dir = '.svn', get_rev = 'svn info', rev_regex = 'Revision: (.*)', dep = '.svn/wc.db'),
- dict(name = 'bazaar', cmd = 'bzr', repo_dir = '.bzr', get_rev = 'bzr revno', rev_regex = '(.*)', dep = '.bzr'),
- ]
- segs = source_dir.replace('\\', '/').split('/')
- for i in range(len(segs), -1, -1):
- curdir = '/'.join(segs[:i])
- for vcs in vcs_systems:
- if os.path.isdir(os.path.join(curdir, vcs['repo_dir'])) and shutil.which(vcs['cmd']):
- vcs['wc_dir'] = curdir
- return vcs
- return None
- # a helper class which implements the same version ordering as RPM
- @functools.total_ordering
- class Version:
- def __init__(self, s):
- self._s = s
- # split into numeric, alphabetic and non-alphanumeric sequences
- sequences = re.finditer(r'(\d+|[a-zA-Z]+|[^a-zA-Z\d]+)', s)
- # non-alphanumeric separators are discarded
- sequences = [m for m in sequences if not re.match(r'[^a-zA-Z\d]+', m.group(1))]
- # numeric sequences have leading zeroes discarded
- sequences = [re.sub(r'^0+(\d)', r'\1', m.group(1), 1) for m in sequences]
- self._v = sequences
- def __str__(self):
- return '%s (V=%s)' % (self._s, str(self._v))
- def __repr__(self):
- return '<Version: {}>'.format(self._s)
- def __lt__(self, other):
- return self.__cmp__(other) == -1
- def __eq__(self, other):
- return self.__cmp__(other) == 0
- def __cmp__(self, other):
- def cmp(a, b):
- return (a > b) - (a < b)
- # compare each sequence in order
- for i in range(0, min(len(self._v), len(other._v))):
- # sort a non-digit sequence before a digit sequence
- if self._v[i].isdigit() != other._v[i].isdigit():
- return 1 if self._v[i].isdigit() else -1
- # compare as numbers
- if self._v[i].isdigit():
- # because leading zeros have already been removed, if one number
- # has more digits, it is greater
- c = cmp(len(self._v[i]), len(other._v[i]))
- if c != 0:
- return c
- # fallthrough
- # compare lexicographically
- c = cmp(self._v[i], other._v[i])
- if c != 0:
- return c
- # if equal length, all components have matched, so equal
- # otherwise, the version with a suffix remaining is greater
- return cmp(len(self._v), len(other._v))
- def _version_extract_cmpop(vstr2):
- if vstr2.startswith('>='):
- cmpop = operator.ge
- vstr2 = vstr2[2:]
- elif vstr2.startswith('<='):
- cmpop = operator.le
- vstr2 = vstr2[2:]
- elif vstr2.startswith('!='):
- cmpop = operator.ne
- vstr2 = vstr2[2:]
- elif vstr2.startswith('=='):
- cmpop = operator.eq
- vstr2 = vstr2[2:]
- elif vstr2.startswith('='):
- cmpop = operator.eq
- vstr2 = vstr2[1:]
- elif vstr2.startswith('>'):
- cmpop = operator.gt
- vstr2 = vstr2[1:]
- elif vstr2.startswith('<'):
- cmpop = operator.lt
- vstr2 = vstr2[1:]
- else:
- cmpop = operator.eq
- return (cmpop, vstr2)
- def version_compare(vstr1, vstr2):
- (cmpop, vstr2) = _version_extract_cmpop(vstr2)
- return cmpop(Version(vstr1), Version(vstr2))
- def version_compare_many(vstr1, conditions):
- if not isinstance(conditions, (list, tuple, frozenset)):
- conditions = [conditions]
- found = []
- not_found = []
- for req in conditions:
- if not version_compare(vstr1, req):
- not_found.append(req)
- else:
- found.append(req)
- return not_found == [], not_found, found
- # determine if the minimum version satisfying the condition |condition| exceeds
- # the minimum version for a feature |minimum|
- def version_compare_condition_with_min(condition, minimum):
- if condition.startswith('>='):
- cmpop = operator.le
- condition = condition[2:]
- elif condition.startswith('<='):
- return False
- elif condition.startswith('!='):
- return False
- elif condition.startswith('=='):
- cmpop = operator.le
- condition = condition[2:]
- elif condition.startswith('='):
- cmpop = operator.le
- condition = condition[1:]
- elif condition.startswith('>'):
- cmpop = operator.lt
- condition = condition[1:]
- elif condition.startswith('<'):
- return False
- else:
- cmpop = operator.le
- # Declaring a project(meson_version: '>=0.46') and then using features in
- # 0.46.0 is valid, because (knowing the meson versioning scheme) '0.46.0' is
- # the lowest version which satisfies the constraint '>=0.46'.
- #
- # But this will fail here, because the minimum version required by the
- # version constraint ('0.46') is strictly less (in our version comparison)
- # than the minimum version needed for the feature ('0.46.0').
- #
- # Map versions in the constraint of the form '0.46' to '0.46.0', to embed
- # this knowledge of the meson versioning scheme.
- condition = condition.strip()
- if re.match(r'^\d+.\d+$', condition):
- condition += '.0'
- return cmpop(Version(minimum), Version(condition))
- def default_libdir():
- if is_debianlike():
- try:
- pc = subprocess.Popen(['dpkg-architecture', '-qDEB_HOST_MULTIARCH'],
- stdout=subprocess.PIPE,
- stderr=subprocess.DEVNULL)
- (stdo, _) = pc.communicate()
- if pc.returncode == 0:
- archpath = stdo.decode().strip()
- return 'lib/' + archpath
- except Exception:
- pass
- if os.path.isdir('/usr/lib64') and not os.path.islink('/usr/lib64'):
- return 'lib64'
- return 'lib'
- def default_libexecdir():
- # There is no way to auto-detect this, so it must be set at build time
- return 'libexec'
- def default_prefix():
- return 'c:/' if is_windows() else '/usr/local'
- def get_library_dirs():
- if is_windows():
- return ['C:/mingw/lib'] # Fixme
- if is_osx():
- return ['/usr/lib'] # Fix me as well.
- # The following is probably Debian/Ubuntu specific.
- # /usr/local/lib is first because it contains stuff
- # installed by the sysadmin and is probably more up-to-date
- # than /usr/lib. If you feel that this search order is
- # problematic, please raise the issue on the mailing list.
- unixdirs = ['/usr/local/lib', '/usr/lib', '/lib']
- plat = subprocess.check_output(['uname', '-m']).decode().strip()
- # This is a terrible hack. I admit it and I'm really sorry.
- # I just don't know what the correct solution is.
- if plat == 'i686':
- plat = 'i386'
- if plat.startswith('arm'):
- plat = 'arm'
- unixdirs += glob('/usr/lib/' + plat + '*')
- if os.path.exists('/usr/lib64'):
- unixdirs.append('/usr/lib64')
- unixdirs += glob('/lib/' + plat + '*')
- if os.path.exists('/lib64'):
- unixdirs.append('/lib64')
- unixdirs += glob('/lib/' + plat + '*')
- return unixdirs
- def has_path_sep(name, sep='/\\'):
- 'Checks if any of the specified @sep path separators are in @name'
- for each in sep:
- if each in name:
- return True
- return False
- def do_replacement(regex, line, format, confdata):
- missing_variables = set()
- start_tag = '@'
- backslash_tag = '\\@'
- if format == 'cmake':
- start_tag = '${'
- backslash_tag = '\\${'
- def variable_replace(match):
- # Pairs of escape characters before '@' or '\@'
- if match.group(0).endswith('\\'):
- num_escapes = match.end(0) - match.start(0)
- return '\\' * (num_escapes // 2)
- # Single escape character and '@'
- elif match.group(0) == backslash_tag:
- return start_tag
- # Template variable to be replaced
- else:
- varname = match.group(1)
- if varname in confdata:
- (var, desc) = confdata.get(varname)
- if isinstance(var, str):
- pass
- elif isinstance(var, int):
- var = str(var)
- else:
- msg = 'Tried to replace variable {!r} value with ' \
- 'something other than a string or int: {!r}'
- raise MesonException(msg.format(varname, var))
- else:
- missing_variables.add(varname)
- var = ''
- return var
- return re.sub(regex, variable_replace, line), missing_variables
- def do_mesondefine(line, confdata):
- arr = line.split()
- if len(arr) != 2:
- raise MesonException('#mesondefine does not contain exactly two tokens: %s' % line.strip())
- varname = arr[1]
- try:
- (v, desc) = confdata.get(varname)
- except KeyError:
- return '/* #undef %s */\n' % varname
- if isinstance(v, bool):
- if v:
- return '#define %s\n' % varname
- else:
- return '#undef %s\n' % varname
- elif isinstance(v, int):
- return '#define %s %d\n' % (varname, v)
- elif isinstance(v, str):
- return '#define %s %s\n' % (varname, v)
- else:
- raise MesonException('#mesondefine argument "%s" is of unknown type.' % varname)
- def do_conf_file(src, dst, confdata, format, encoding='utf-8'):
- try:
- with open(src, encoding=encoding, newline='') as f:
- data = f.readlines()
- except Exception as e:
- raise MesonException('Could not read input file %s: %s' % (src, str(e)))
- # Only allow (a-z, A-Z, 0-9, _, -) as valid characters for a define
- # Also allow escaping '@' with '\@'
- if format in ['meson', 'cmake@']:
- regex = re.compile(r'(?:\\\\)+(?=\\?@)|\\@|@([-a-zA-Z0-9_]+)@')
- elif format == 'cmake':
- regex = re.compile(r'(?:\\\\)+(?=\\?\$)|\\\${|\${([-a-zA-Z0-9_]+)}')
- else:
- raise MesonException('Format "{}" not handled'.format(format))
- search_token = '#mesondefine'
- if format != 'meson':
- search_token = '#cmakedefine'
- result = []
- missing_variables = set()
- # Detect when the configuration data is empty and no tokens were found
- # during substitution so we can warn the user to use the `copy:` kwarg.
- confdata_useless = not confdata.keys()
- for line in data:
- if line.startswith(search_token):
- confdata_useless = False
- line = do_mesondefine(line, confdata)
- else:
- line, missing = do_replacement(regex, line, format, confdata)
- missing_variables.update(missing)
- if missing:
- confdata_useless = False
- result.append(line)
- dst_tmp = dst + '~'
- try:
- with open(dst_tmp, 'w', encoding=encoding, newline='') as f:
- f.writelines(result)
- except Exception as e:
- raise MesonException('Could not write output file %s: %s' % (dst, str(e)))
- shutil.copymode(src, dst_tmp)
- replace_if_different(dst, dst_tmp)
- return missing_variables, confdata_useless
- CONF_C_PRELUDE = '''/*
- * Autogenerated by the Meson build system.
- * Do not edit, your changes will be lost.
- */
- #pragma once
- '''
- CONF_NASM_PRELUDE = '''; Autogenerated by the Meson build system.
- ; Do not edit, your changes will be lost.
- '''
- def dump_conf_header(ofilename, cdata, output_format):
- if output_format == 'c':
- prelude = CONF_C_PRELUDE
- prefix = '#'
- elif output_format == 'nasm':
- prelude = CONF_NASM_PRELUDE
- prefix = '%'
- ofilename_tmp = ofilename + '~'
- with open(ofilename_tmp, 'w', encoding='utf-8') as ofile:
- ofile.write(prelude)
- for k in sorted(cdata.keys()):
- (v, desc) = cdata.get(k)
- if desc:
- if output_format == 'c':
- ofile.write('/* %s */\n' % desc)
- elif output_format == 'nasm':
- for line in desc.split('\n'):
- ofile.write('; %s\n' % line)
- if isinstance(v, bool):
- if v:
- ofile.write('%sdefine %s\n\n' % (prefix, k))
- else:
- ofile.write('%sundef %s\n\n' % (prefix, k))
- elif isinstance(v, (int, str)):
- ofile.write('%sdefine %s %s\n\n' % (prefix, k, v))
- else:
- raise MesonException('Unknown data type in configuration file entry: ' + k)
- replace_if_different(ofilename, ofilename_tmp)
- def replace_if_different(dst, dst_tmp):
- # If contents are identical, don't touch the file to prevent
- # unnecessary rebuilds.
- different = True
- try:
- with open(dst, 'rb') as f1, open(dst_tmp, 'rb') as f2:
- if f1.read() == f2.read():
- different = False
- except FileNotFoundError:
- pass
- if different:
- os.replace(dst_tmp, dst)
- else:
- os.unlink(dst_tmp)
- def listify(item, flatten=True, unholder=False):
- '''
- Returns a list with all args embedded in a list if they are not a list.
- This function preserves order.
- @flatten: Convert lists of lists to a flat list
- @unholder: Replace each item with the object it holds, if required
- Note: unholding only works recursively when flattening
- '''
- if not isinstance(item, list):
- if unholder and hasattr(item, 'held_object'):
- item = item.held_object
- return [item]
- result = []
- for i in item:
- if unholder and hasattr(i, 'held_object'):
- i = i.held_object
- if flatten and isinstance(i, list):
- result += listify(i, flatten=True, unholder=unholder)
- else:
- result.append(i)
- return result
- def extract_as_list(dict_object, *keys, pop=False, **kwargs):
- '''
- Extracts all values from given dict_object and listifies them.
- '''
- result = []
- fetch = dict_object.get
- if pop:
- fetch = dict_object.pop
- # If there's only one key, we don't return a list with one element
- if len(keys) == 1:
- return listify(fetch(keys[0], []), **kwargs)
- # Return a list of values corresponding to *keys
- for key in keys:
- result.append(listify(fetch(key, []), **kwargs))
- return result
- def typeslistify(item, types):
- '''
- Ensure that type(@item) is one of @types or a
- list of items all of which are of type @types
- '''
- if isinstance(item, types):
- item = [item]
- if not isinstance(item, list):
- raise MesonException('Item must be a list or one of {!r}'.format(types))
- for i in item:
- if i is not None and not isinstance(i, types):
- raise MesonException('List item must be one of {!r}'.format(types))
- return item
- def stringlistify(item):
- return typeslistify(item, str)
- def expand_arguments(args):
- expended_args = []
- for arg in args:
- if not arg.startswith('@'):
- expended_args.append(arg)
- continue
- args_file = arg[1:]
- try:
- with open(args_file) as f:
- extended_args = f.read().split()
- expended_args += extended_args
- except Exception as e:
- print('Error expanding command line arguments, %s not found' % args_file)
- print(e)
- return None
- return expended_args
- def Popen_safe(args, write=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs):
- import locale
- encoding = locale.getpreferredencoding()
- if sys.version_info < (3, 6) or not sys.stdout.encoding or encoding.upper() != 'UTF-8':
- return Popen_safe_legacy(args, write=write, stdout=stdout, stderr=stderr, **kwargs)
- p = subprocess.Popen(args, universal_newlines=True, close_fds=False,
- stdout=stdout, stderr=stderr, **kwargs)
- o, e = p.communicate(write)
- return p, o, e
- def Popen_safe_legacy(args, write=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs):
- p = subprocess.Popen(args, universal_newlines=False,
- stdout=stdout, stderr=stderr, **kwargs)
- if write is not None:
- write = write.encode('utf-8')
- o, e = p.communicate(write)
- if o is not None:
- if sys.stdout.encoding:
- o = o.decode(encoding=sys.stdout.encoding, errors='replace').replace('\r\n', '\n')
- else:
- o = o.decode(errors='replace').replace('\r\n', '\n')
- if e is not None:
- if sys.stderr.encoding:
- e = e.decode(encoding=sys.stderr.encoding, errors='replace').replace('\r\n', '\n')
- else:
- e = e.decode(errors='replace').replace('\r\n', '\n')
- return p, o, e
- def iter_regexin_iter(regexiter, initer):
- '''
- Takes each regular expression in @regexiter and tries to search for it in
- every item in @initer. If there is a match, returns that match.
- Else returns False.
- '''
- for regex in regexiter:
- for ii in initer:
- if not isinstance(ii, str):
- continue
- match = re.search(regex, ii)
- if match:
- return match.group()
- return False
- def _substitute_values_check_errors(command, values):
- # Error checking
- inregex = ('@INPUT([0-9]+)?@', '@PLAINNAME@', '@BASENAME@')
- outregex = ('@OUTPUT([0-9]+)?@', '@OUTDIR@')
- if '@INPUT@' not in values:
- # Error out if any input-derived templates are present in the command
- match = iter_regexin_iter(inregex, command)
- if match:
- m = 'Command cannot have {!r}, since no input files were specified'
- raise MesonException(m.format(match))
- else:
- if len(values['@INPUT@']) > 1:
- # Error out if @PLAINNAME@ or @BASENAME@ is present in the command
- match = iter_regexin_iter(inregex[1:], command)
- if match:
- raise MesonException('Command cannot have {!r} when there is '
- 'more than one input file'.format(match))
- # Error out if an invalid @INPUTnn@ template was specified
- for each in command:
- if not isinstance(each, str):
- continue
- match = re.search(inregex[0], each)
- if match and match.group() not in values:
- m = 'Command cannot have {!r} since there are only {!r} inputs'
- raise MesonException(m.format(match.group(), len(values['@INPUT@'])))
- if '@OUTPUT@' not in values:
- # Error out if any output-derived templates are present in the command
- match = iter_regexin_iter(outregex, command)
- if match:
- m = 'Command cannot have {!r} since there are no outputs'
- raise MesonException(m.format(match))
- else:
- # Error out if an invalid @OUTPUTnn@ template was specified
- for each in command:
- if not isinstance(each, str):
- continue
- match = re.search(outregex[0], each)
- if match and match.group() not in values:
- m = 'Command cannot have {!r} since there are only {!r} outputs'
- raise MesonException(m.format(match.group(), len(values['@OUTPUT@'])))
- def substitute_values(command, values):
- '''
- Substitute the template strings in the @values dict into the list of
- strings @command and return a new list. For a full list of the templates,
- see get_filenames_templates_dict()
- If multiple inputs/outputs are given in the @values dictionary, we
- substitute @INPUT@ and @OUTPUT@ only if they are the entire string, not
- just a part of it, and in that case we substitute *all* of them.
- '''
- # Error checking
- _substitute_values_check_errors(command, values)
- # Substitution
- outcmd = []
- rx_keys = [re.escape(key) for key in values if key not in ('@INPUT@', '@OUTPUT@')]
- value_rx = re.compile('|'.join(rx_keys)) if rx_keys else None
- for vv in command:
- if not isinstance(vv, str):
- outcmd.append(vv)
- elif '@INPUT@' in vv:
- inputs = values['@INPUT@']
- if vv == '@INPUT@':
- outcmd += inputs
- elif len(inputs) == 1:
- outcmd.append(vv.replace('@INPUT@', inputs[0]))
- else:
- raise MesonException("Command has '@INPUT@' as part of a "
- "string and more than one input file")
- elif '@OUTPUT@' in vv:
- outputs = values['@OUTPUT@']
- if vv == '@OUTPUT@':
- outcmd += outputs
- elif len(outputs) == 1:
- outcmd.append(vv.replace('@OUTPUT@', outputs[0]))
- else:
- raise MesonException("Command has '@OUTPUT@' as part of a "
- "string and more than one output file")
- # Append values that are exactly a template string.
- # This is faster than a string replace.
- elif vv in values:
- outcmd.append(values[vv])
- # Substitute everything else with replacement
- elif value_rx:
- outcmd.append(value_rx.sub(lambda m: values[m.group(0)], vv))
- else:
- outcmd.append(vv)
- return outcmd
- def get_filenames_templates_dict(inputs, outputs):
- '''
- Create a dictionary with template strings as keys and values as values for
- the following templates:
- @INPUT@ - the full path to one or more input files, from @inputs
- @OUTPUT@ - the full path to one or more output files, from @outputs
- @OUTDIR@ - the full path to the directory containing the output files
- If there is only one input file, the following keys are also created:
- @PLAINNAME@ - the filename of the input file
- @BASENAME@ - the filename of the input file with the extension removed
- If there is more than one input file, the following keys are also created:
- @INPUT0@, @INPUT1@, ... one for each input file
- If there is more than one output file, the following keys are also created:
- @OUTPUT0@, @OUTPUT1@, ... one for each output file
- '''
- values = {}
- # Gather values derived from the input
- if inputs:
- # We want to substitute all the inputs.
- values['@INPUT@'] = inputs
- for (ii, vv) in enumerate(inputs):
- # Write out @INPUT0@, @INPUT1@, ...
- values['@INPUT{}@'.format(ii)] = vv
- if len(inputs) == 1:
- # Just one value, substitute @PLAINNAME@ and @BASENAME@
- values['@PLAINNAME@'] = plain = os.path.basename(inputs[0])
- values['@BASENAME@'] = os.path.splitext(plain)[0]
- if outputs:
- # Gather values derived from the outputs, similar to above.
- values['@OUTPUT@'] = outputs
- for (ii, vv) in enumerate(outputs):
- values['@OUTPUT{}@'.format(ii)] = vv
- # Outdir should be the same for all outputs
- values['@OUTDIR@'] = os.path.dirname(outputs[0])
- # Many external programs fail on empty arguments.
- if values['@OUTDIR@'] == '':
- values['@OUTDIR@'] = '.'
- return values
- def _make_tree_writable(topdir):
- # Ensure all files and directories under topdir are writable
- # (and readable) by owner.
- for d, _, files in os.walk(topdir):
- os.chmod(d, os.stat(d).st_mode | stat.S_IWRITE | stat.S_IREAD)
- for fname in files:
- fpath = os.path.join(d, fname)
- if os.path.isfile(fpath):
- os.chmod(fpath, os.stat(fpath).st_mode | stat.S_IWRITE | stat.S_IREAD)
- def windows_proof_rmtree(f):
- # On Windows if anyone is holding a file open you can't
- # delete it. As an example an anti virus scanner might
- # be scanning files you are trying to delete. The only
- # way to fix this is to try again and again.
- delays = [0.1, 0.1, 0.2, 0.2, 0.2, 0.5, 0.5, 1, 1, 1, 1, 2]
- # Start by making the tree wriable.
- _make_tree_writable(f)
- for d in delays:
- try:
- shutil.rmtree(f)
- return
- except FileNotFoundError:
- return
- except (OSError, PermissionError):
- time.sleep(d)
- # Try one last time and throw if it fails.
- shutil.rmtree(f)
- def windows_proof_rm(fpath):
- """Like windows_proof_rmtree, but for a single file."""
- if os.path.isfile(fpath):
- os.chmod(fpath, os.stat(fpath).st_mode | stat.S_IWRITE | stat.S_IREAD)
- delays = [0.1, 0.1, 0.2, 0.2, 0.2, 0.5, 0.5, 1, 1, 1, 1, 2]
- for d in delays:
- try:
- os.unlink(fpath)
- return
- except FileNotFoundError:
- return
- except (OSError, PermissionError):
- time.sleep(d)
- os.unlink(fpath)
- def detect_subprojects(spdir_name, current_dir='', result=None):
- if result is None:
- result = {}
- spdir = os.path.join(current_dir, spdir_name)
- if not os.path.exists(spdir):
- return result
- for trial in glob(os.path.join(spdir, '*')):
- basename = os.path.basename(trial)
- if trial == 'packagecache':
- continue
- append_this = True
- if os.path.isdir(trial):
- detect_subprojects(spdir_name, trial, result)
- elif trial.endswith('.wrap') and os.path.isfile(trial):
- basename = os.path.splitext(basename)[0]
- else:
- append_this = False
- if append_this:
- if basename in result:
- result[basename].append(trial)
- else:
- result[basename] = [trial]
- return result
- def get_error_location_string(fname, lineno):
- return '{}:{}:'.format(fname, lineno)
- def substring_is_in_list(substr, strlist):
- for s in strlist:
- if substr in s:
- return True
- return False
- class OrderedSet(collections.abc.MutableSet):
- """A set that preserves the order in which items are added, by first
- insertion.
- """
- def __init__(self, iterable=None):
- self.__container = collections.OrderedDict()
- if iterable:
- self.update(iterable)
- def __contains__(self, value):
- return value in self.__container
- def __iter__(self):
- return iter(self.__container.keys())
- def __len__(self):
- return len(self.__container)
- def __repr__(self):
- # Don't print 'OrderedSet("")' for an empty set.
- if self.__container:
- return 'OrderedSet("{}")'.format(
- '", "'.join(repr(e) for e in self.__container.keys()))
- return 'OrderedSet()'
- def __reversed__(self):
- return reversed(self.__container)
- def add(self, value):
- self.__container[value] = None
- def discard(self, value):
- if value in self.__container:
- del self.__container[value]
- def update(self, iterable):
- for item in iterable:
- self.__container[item] = None
- def difference(self, set_):
- return type(self)(e for e in self if e not in set_)
- class BuildDirLock:
- def __init__(self, builddir):
- self.lockfilename = os.path.join(builddir, 'meson-private/meson.lock')
- def __enter__(self):
- self.lockfile = open(self.lockfilename, 'w')
- try:
- if have_fcntl:
- fcntl.flock(self.lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
- elif have_msvcrt:
- msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_NBLCK, 1)
- except (BlockingIOError, PermissionError):
- self.lockfile.close()
- raise MesonException('Some other Meson process is already using this build directory. Exiting.')
- def __exit__(self, *args):
- if have_fcntl:
- fcntl.flock(self.lockfile, fcntl.LOCK_UN)
- elif have_msvcrt:
- msvcrt.locking(self.lockfile.fileno(), msvcrt.LK_UNLCK, 1)
- self.lockfile.close()
- def relpath(path, start):
- # On Windows a relative path can't be evaluated for paths on two different
- # drives (i.e. c:\foo and f:\bar). The only thing left to do is to use the
- # original absolute path.
- try:
- return os.path.relpath(path, start)
- except ValueError:
- return path
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