The Meson Build System
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470 lines
20 KiB
470 lines
20 KiB
# Copyright 2013-2014 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import sys, pickle, os, shutil, subprocess, gzip, errno |
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import shlex |
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import argparse |
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from glob import glob |
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from .scripts import depfixer |
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from .scripts import destdir_join |
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from .mesonlib import is_windows, Popen_safe |
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from .mtest import rebuild_all |
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from __main__ import __file__ as main_file |
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selinux_updates = [] |
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def buildparser(): |
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parser = argparse.ArgumentParser(prog='meson install') |
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parser.add_argument('-C', default='.', dest='wd', |
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help='directory to cd into before running') |
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parser.add_argument('--no-rebuild', default=False, action='store_true', |
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help='Do not rebuild before installing.') |
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parser.add_argument('--only-changed', default=False, action='store_true', |
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help='Only overwrite files that are older than the copied file.') |
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return parser |
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class DirMaker: |
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def __init__(self, lf): |
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self.lf = lf |
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self.dirs = [] |
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def makedirs(self, path, exist_ok=False): |
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dirname = os.path.normpath(path) |
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dirs = [] |
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while dirname != os.path.dirname(dirname): |
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if not os.path.exists(dirname): |
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dirs.append(dirname) |
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dirname = os.path.dirname(dirname) |
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os.makedirs(path, exist_ok=exist_ok) |
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# store the directories in creation order, with the parent directory |
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# before the child directories. Future calls of makedir() will not |
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# create the parent directories, so the last element in the list is |
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# the last one to be created. That is the first one to be removed on |
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# __exit__ |
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dirs.reverse() |
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self.dirs += dirs |
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def __enter__(self): |
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return self |
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def __exit__(self, type, value, traceback): |
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self.dirs.reverse() |
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for d in self.dirs: |
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append_to_log(self.lf, d) |
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def is_executable(path): |
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'''Checks whether any of the "x" bits are set in the source file mode.''' |
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return bool(os.stat(path).st_mode & 0o111) |
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def append_to_log(lf, line): |
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lf.write(line) |
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if not line.endswith('\n'): |
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lf.write('\n') |
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lf.flush() |
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def sanitize_permissions(path, umask): |
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if umask is None: |
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return |
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new_perms = 0o777 if is_executable(path) else 0o666 |
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new_perms &= ~umask |
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try: |
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os.chmod(path, new_perms) |
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except PermissionError as e: |
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msg = '{!r}: Unable to set permissions {!r}: {}, ignoring...' |
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print(msg.format(path, new_perms, e.strerror)) |
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def set_mode(path, mode, default_umask): |
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if mode is None or (mode.perms_s or mode.owner or mode.group) is None: |
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# Just sanitize permissions with the default umask |
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sanitize_permissions(path, default_umask) |
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return |
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# No chown() on Windows, and must set one of owner/group |
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if not is_windows() and (mode.owner or mode.group) is not None: |
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try: |
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shutil.chown(path, mode.owner, mode.group) |
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except PermissionError as e: |
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msg = '{!r}: Unable to set owner {!r} and group {!r}: {}, ignoring...' |
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print(msg.format(path, mode.owner, mode.group, e.strerror)) |
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except LookupError: |
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msg = '{!r}: Non-existent owner {!r} or group {!r}: ignoring...' |
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print(msg.format(path, mode.owner, mode.group)) |
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except OSError as e: |
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if e.errno == errno.EINVAL: |
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msg = '{!r}: Non-existent numeric owner {!r} or group {!r}: ignoring...' |
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print(msg.format(path, mode.owner, mode.group)) |
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else: |
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raise |
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# Must set permissions *after* setting owner/group otherwise the |
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# setuid/setgid bits will get wiped by chmod |
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# NOTE: On Windows you can set read/write perms; the rest are ignored |
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if mode.perms_s is not None: |
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try: |
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os.chmod(path, mode.perms) |
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except PermissionError as e: |
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msg = '{!r}: Unable to set permissions {!r}: {}, ignoring...' |
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print(msg.format(path, mode.perms_s, e.strerror)) |
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else: |
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sanitize_permissions(path, default_umask) |
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def restore_selinux_contexts(): |
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''' |
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Restores the SELinux context for files in @selinux_updates |
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If $DESTDIR is set, do not warn if the call fails. |
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''' |
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try: |
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subprocess.check_call(['selinuxenabled']) |
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except (FileNotFoundError, PermissionError, subprocess.CalledProcessError) as e: |
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# If we don't have selinux or selinuxenabled returned 1, failure |
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# is ignored quietly. |
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return |
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if not shutil.which('restorecon'): |
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# If we don't have restorecon, failure is ignored quietly. |
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return |
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with subprocess.Popen(['restorecon', '-F', '-f-', '-0'], |
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stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: |
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out, err = proc.communicate(input=b'\0'.join(os.fsencode(f) for f in selinux_updates) + b'\0') |
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if proc.returncode != 0 and not os.environ.get('DESTDIR'): |
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print('Failed to restore SELinux context of installed files...', |
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'Standard output:', out.decode(), |
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'Standard error:', err.decode(), sep='\n') |
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def get_destdir_path(d, path): |
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if os.path.isabs(path): |
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output = destdir_join(d.destdir, path) |
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else: |
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output = os.path.join(d.fullprefix, path) |
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return output |
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def check_for_stampfile(fname): |
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'''Some languages e.g. Rust have output files |
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whose names are not known at configure time. |
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Check if this is the case and return the real |
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file instead.''' |
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if fname.endswith('.so') or fname.endswith('.dll'): |
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if os.stat(fname).st_size == 0: |
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(base, suffix) = os.path.splitext(fname) |
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files = glob(base + '-*' + suffix) |
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if len(files) > 1: |
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print("Stale dynamic library files in build dir. Can't install.") |
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sys.exit(1) |
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if len(files) == 1: |
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return files[0] |
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elif fname.endswith('.a') or fname.endswith('.lib'): |
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if os.stat(fname).st_size == 0: |
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(base, suffix) = os.path.splitext(fname) |
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files = glob(base + '-*' + '.rlib') |
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if len(files) > 1: |
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print("Stale static library files in build dir. Can't install.") |
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sys.exit(1) |
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if len(files) == 1: |
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return files[0] |
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return fname |
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class Installer: |
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def __init__(self, options, lf): |
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self.options = options |
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self.lf = lf |
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def should_preserve_existing_file(self, from_file, to_file): |
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if not self.options.only_changed: |
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return False |
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from_time = os.stat(from_file).st_mtime |
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to_time = os.stat(to_file).st_mtime |
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return from_time <= to_time |
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def do_copyfile(self, from_file, to_file): |
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if not os.path.isfile(from_file): |
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raise RuntimeError('Tried to install something that isn\'t a file:' |
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'{!r}'.format(from_file)) |
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# copyfile fails if the target file already exists, so remove it to |
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# allow overwriting a previous install. If the target is not a file, we |
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# want to give a readable error. |
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if os.path.exists(to_file): |
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if not os.path.isfile(to_file): |
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raise RuntimeError('Destination {!r} already exists and is not ' |
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'a file'.format(to_file)) |
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if self.should_preserve_existing_file(from_file, to_file): |
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append_to_log(self.lf, '# Preserving old file %s\n' % to_file) |
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print('Preserving existing file %s.' % to_file) |
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return False |
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os.unlink(to_file) |
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outdir = os.path.split(to_file)[0] |
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print('Installing %s to %s' % (from_file, outdir)) |
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shutil.copyfile(from_file, to_file) |
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shutil.copystat(from_file, to_file) |
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selinux_updates.append(to_file) |
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append_to_log(self.lf, to_file) |
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return True |
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def do_copydir(self, data, src_dir, dst_dir, exclude, install_mode): |
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''' |
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Copies the contents of directory @src_dir into @dst_dir. |
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For directory |
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/foo/ |
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bar/ |
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excluded |
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foobar |
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file |
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do_copydir(..., '/foo', '/dst/dir', {'bar/excluded'}) creates |
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/dst/ |
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dir/ |
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bar/ |
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foobar |
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file |
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Args: |
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src_dir: str, absolute path to the source directory |
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dst_dir: str, absolute path to the destination directory |
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exclude: (set(str), set(str)), tuple of (exclude_files, exclude_dirs), |
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each element of the set is a path relative to src_dir. |
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''' |
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if not os.path.isabs(src_dir): |
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raise ValueError('src_dir must be absolute, got %s' % src_dir) |
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if not os.path.isabs(dst_dir): |
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raise ValueError('dst_dir must be absolute, got %s' % dst_dir) |
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if exclude is not None: |
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exclude_files, exclude_dirs = exclude |
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else: |
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exclude_files = exclude_dirs = set() |
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for root, dirs, files in os.walk(src_dir): |
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assert os.path.isabs(root) |
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for d in dirs[:]: |
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abs_src = os.path.join(root, d) |
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filepart = os.path.relpath(abs_src, start=src_dir) |
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abs_dst = os.path.join(dst_dir, filepart) |
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# Remove these so they aren't visited by os.walk at all. |
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if filepart in exclude_dirs: |
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dirs.remove(d) |
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continue |
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if os.path.isdir(abs_dst): |
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continue |
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if os.path.exists(abs_dst): |
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print('Tried to copy directory %s but a file of that name already exists.' % abs_dst) |
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sys.exit(1) |
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data.dirmaker.makedirs(abs_dst) |
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shutil.copystat(abs_src, abs_dst) |
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sanitize_permissions(abs_dst, data.install_umask) |
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for f in files: |
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abs_src = os.path.join(root, f) |
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filepart = os.path.relpath(abs_src, start=src_dir) |
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if filepart in exclude_files: |
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continue |
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abs_dst = os.path.join(dst_dir, filepart) |
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if os.path.isdir(abs_dst): |
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print('Tried to copy file %s but a directory of that name already exists.' % abs_dst) |
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if os.path.exists(abs_dst): |
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os.unlink(abs_dst) |
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parent_dir = os.path.dirname(abs_dst) |
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if not os.path.isdir(parent_dir): |
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os.mkdir(parent_dir) |
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shutil.copystat(os.path.dirname(abs_src), parent_dir) |
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# FIXME: what about symlinks? |
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self.do_copyfile(abs_src, abs_dst) |
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set_mode(abs_dst, install_mode, data.install_umask) |
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append_to_log(self.lf, abs_dst) |
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def do_install(self, datafilename): |
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with open(datafilename, 'rb') as ifile: |
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d = pickle.load(ifile) |
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d.destdir = os.environ.get('DESTDIR', '') |
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d.fullprefix = destdir_join(d.destdir, d.prefix) |
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if d.install_umask is not None: |
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os.umask(d.install_umask) |
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try: |
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d.dirmaker = DirMaker(self.lf) |
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with d.dirmaker: |
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self.install_subdirs(d) # Must be first, because it needs to delete the old subtree. |
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self.install_targets(d) |
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self.install_headers(d) |
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self.install_man(d) |
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self.install_data(d) |
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restore_selinux_contexts() |
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self.run_install_script(d) |
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except PermissionError: |
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if shutil.which('pkexec') is not None and 'PKEXEC_UID' not in os.environ: |
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print('Installation failed due to insufficient permissions.') |
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print('Attempting to use polkit to gain elevated privileges...') |
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os.execlp('pkexec', 'pkexec', sys.executable, main_file, *sys.argv[1:], |
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'-C', os.getcwd()) |
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else: |
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raise |
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def install_subdirs(self, d): |
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for (src_dir, dst_dir, mode, exclude) in d.install_subdirs: |
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full_dst_dir = get_destdir_path(d, dst_dir) |
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print('Installing subdir %s to %s' % (src_dir, full_dst_dir)) |
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d.dirmaker.makedirs(full_dst_dir, exist_ok=True) |
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self.do_copydir(d, src_dir, full_dst_dir, exclude, mode) |
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def install_data(self, d): |
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for i in d.data: |
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fullfilename = i[0] |
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outfilename = get_destdir_path(d, i[1]) |
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mode = i[2] |
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outdir = os.path.dirname(outfilename) |
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d.dirmaker.makedirs(outdir, exist_ok=True) |
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self.do_copyfile(fullfilename, outfilename) |
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set_mode(outfilename, mode, d.install_umask) |
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def install_man(self, d): |
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for m in d.man: |
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full_source_filename = m[0] |
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outfilename = get_destdir_path(d, m[1]) |
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outdir = os.path.dirname(outfilename) |
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d.dirmaker.makedirs(outdir, exist_ok=True) |
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install_mode = m[2] |
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if outfilename.endswith('.gz') and not full_source_filename.endswith('.gz'): |
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with open(outfilename, 'wb') as of: |
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with open(full_source_filename, 'rb') as sf: |
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# Set mtime and filename for reproducibility. |
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with gzip.GzipFile(fileobj=of, mode='wb', filename='', mtime=0) as gz: |
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gz.write(sf.read()) |
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shutil.copystat(full_source_filename, outfilename) |
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print('Installing %s to %s' % (full_source_filename, outdir)) |
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append_to_log(self.lf, outfilename) |
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else: |
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self.do_copyfile(full_source_filename, outfilename) |
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set_mode(outfilename, install_mode, d.install_umask) |
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def install_headers(self, d): |
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for t in d.headers: |
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fullfilename = t[0] |
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fname = os.path.basename(fullfilename) |
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outdir = get_destdir_path(d, t[1]) |
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outfilename = os.path.join(outdir, fname) |
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install_mode = t[2] |
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d.dirmaker.makedirs(outdir, exist_ok=True) |
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self.do_copyfile(fullfilename, outfilename) |
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set_mode(outfilename, install_mode, d.install_umask) |
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def run_install_script(self, d): |
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env = {'MESON_SOURCE_ROOT': d.source_dir, |
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'MESON_BUILD_ROOT': d.build_dir, |
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'MESON_INSTALL_PREFIX': d.prefix, |
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'MESON_INSTALL_DESTDIR_PREFIX': d.fullprefix, |
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'MESONINTROSPECT': ' '.join([shlex.quote(x) for x in d.mesonintrospect]), |
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} |
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child_env = os.environ.copy() |
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child_env.update(env) |
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for i in d.install_scripts: |
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script = i['exe'] |
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args = i['args'] |
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name = ' '.join(script + args) |
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print('Running custom install script {!r}'.format(name)) |
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try: |
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rc = subprocess.call(script + args, env=child_env) |
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if rc != 0: |
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sys.exit(rc) |
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except OSError: |
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print('Failed to run install script {!r}'.format(name)) |
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sys.exit(1) |
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def install_targets(self, d): |
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for t in d.targets: |
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fname = check_for_stampfile(t.fname) |
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outdir = get_destdir_path(d, t.outdir) |
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outname = os.path.join(outdir, os.path.basename(fname)) |
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final_path = os.path.join(d.prefix, t.outdir, os.path.basename(fname)) |
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aliases = t.aliases |
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should_strip = t.strip |
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install_rpath = t.install_rpath |
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install_name_mappings = t.install_name_mappings |
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install_mode = t.install_mode |
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d.dirmaker.makedirs(outdir, exist_ok=True) |
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if not os.path.exists(fname): |
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raise RuntimeError('File {!r} could not be found'.format(fname)) |
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elif os.path.isfile(fname): |
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self.do_copyfile(fname, outname) |
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set_mode(outname, install_mode, d.install_umask) |
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if should_strip and d.strip_bin is not None: |
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if fname.endswith('.jar'): |
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print('Not stripping jar target:', os.path.basename(fname)) |
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continue |
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print('Stripping target {!r}'.format(fname)) |
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ps, stdo, stde = Popen_safe(d.strip_bin + [outname]) |
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if ps.returncode != 0: |
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print('Could not strip file.\n') |
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print('Stdout:\n%s\n' % stdo) |
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print('Stderr:\n%s\n' % stde) |
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sys.exit(1) |
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pdb_filename = os.path.splitext(fname)[0] + '.pdb' |
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if not should_strip and os.path.exists(pdb_filename): |
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pdb_outname = os.path.splitext(outname)[0] + '.pdb' |
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self.do_copyfile(pdb_filename, pdb_outname) |
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set_mode(pdb_outname, install_mode, d.install_umask) |
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elif os.path.isdir(fname): |
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fname = os.path.join(d.build_dir, fname.rstrip('/')) |
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outname = os.path.join(outdir, os.path.basename(fname)) |
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self.do_copydir(d, fname, outname, None, install_mode) |
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else: |
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raise RuntimeError('Unknown file type for {!r}'.format(fname)) |
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printed_symlink_error = False |
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for alias, to in aliases.items(): |
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try: |
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symlinkfilename = os.path.join(outdir, alias) |
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try: |
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os.unlink(symlinkfilename) |
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except FileNotFoundError: |
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pass |
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os.symlink(to, symlinkfilename) |
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append_to_log(self.lf, symlinkfilename) |
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except (NotImplementedError, OSError): |
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if not printed_symlink_error: |
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print("Symlink creation does not work on this platform. " |
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"Skipping all symlinking.") |
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printed_symlink_error = True |
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if os.path.isfile(outname): |
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try: |
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depfixer.fix_rpath(outname, install_rpath, final_path, |
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install_name_mappings, verbose=False) |
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except SystemExit as e: |
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if isinstance(e.code, int) and e.code == 0: |
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pass |
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else: |
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raise |
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def run(args): |
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parser = buildparser() |
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opts = parser.parse_args(args) |
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datafilename = 'meson-private/install.dat' |
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private_dir = os.path.dirname(datafilename) |
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log_dir = os.path.join(private_dir, '../meson-logs') |
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if not os.path.exists(os.path.join(opts.wd, datafilename)): |
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sys.exit('Install data not found. Run this command in build directory root.') |
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log_dir = os.path.join(private_dir, '../meson-logs') |
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if not opts.no_rebuild: |
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if not rebuild_all(opts.wd): |
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sys.exit(-1) |
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os.chdir(opts.wd) |
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with open(os.path.join(log_dir, 'install-log.txt'), 'w') as lf: |
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installer = Installer(opts, lf) |
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append_to_log(lf, '# List of files installed by Meson') |
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append_to_log(lf, '# Does not contain files installed by custom scripts.') |
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installer.do_install(datafilename) |
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return 0 |
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if __name__ == '__main__': |
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sys.exit(run(sys.argv[1:]))
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