scripts/build-many-glibcs.py

   1 #!/usr/bin/python3
   2 # Build many configurations of glibc.
   3 # Copyright (C) 2016-2023 Free Software Foundation, Inc.
   4 # Copyright The GNU Toolchain Authors.
   5 # This file is part of the GNU C Library.
   6 #
   7 # The GNU C Library is free software; you can redistribute it and/or
   8 # modify it under the terms of the GNU Lesser General Public
   9 # License as published by the Free Software Foundation; either
  10 # version 2.1 of the License, or (at your option) any later version.
  11 #
  12 # The GNU C Library is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # Lesser General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU Lesser General Public
  18 # License along with the GNU C Library; if not, see
  19 # <https://www.gnu.org/licenses/>.
  20
  21 """Build many configurations of glibc.
  22
  23 This script takes as arguments a directory name (containing a src
  24 subdirectory with sources of the relevant toolchain components) and a
  25 description of what to do: 'checkout', to check out sources into that
  26 directory, 'bot-cycle', to run a series of checkout and build steps,
  27 'bot', to run 'bot-cycle' repeatedly, 'host-libraries', to build
  28 libraries required by the toolchain, 'compilers', to build
  29 cross-compilers for various configurations, or 'glibcs', to build
  30 glibc for various configurations and run the compilation parts of the
  31 testsuite.  Subsequent arguments name the versions of components to
  32 check out (<component>-<version), for 'checkout', or, for actions
  33 other than 'checkout' and 'bot-cycle', name configurations for which
  34 compilers or glibc are to be built.
  35
  36 The 'list-compilers' command prints the name of each available
  37 compiler configuration, without building anything.  The 'list-glibcs'
  38 command prints the name of each glibc compiler configuration, followed
  39 by the space, followed by the name of the compiler configuration used
  40 for building this glibc variant.
  41
  42 """
  43
  44 import argparse
  45 import datetime
  46 import email.mime.text
  47 import email.utils
  48 import json
  49 import os
  50 import re
  51 import shutil
  52 import smtplib
  53 import stat
  54 import subprocess
  55 import sys
  56 import time
  57 import urllib.request
  58
  59 try:
  60     subprocess.run
  61 except:
  62     class _CompletedProcess:
  63         def __init__(self, args, returncode, stdout=None, stderr=None):
  64             self.args = args
  65             self.returncode = returncode
  66             self.stdout = stdout
  67             self.stderr = stderr
  68
  69     def _run(*popenargs, input=None, timeout=None, check=False, **kwargs):
  70         assert(timeout is None)
  71         with subprocess.Popen(*popenargs, **kwargs) as process:
  72             try:
  73                 stdout, stderr = process.communicate(input)
  74             except:
  75                 process.kill()
  76                 process.wait()
  77                 raise
  78             returncode = process.poll()
  79             if check and returncode:
  80                 raise subprocess.CalledProcessError(returncode, popenargs)
  81         return _CompletedProcess(popenargs, returncode, stdout, stderr)
  82
  83     subprocess.run = _run
  84
  85
  86 class Context(object):
  87     """The global state associated with builds in a given directory."""
  88
  89     def __init__(self, topdir, parallelism, keep, replace_sources, strip,
  90                  full_gcc, action, shallow=False):
  91         """Initialize the context."""
  92         self.topdir = topdir
  93         self.parallelism = parallelism
  94         self.keep = keep
  95         self.replace_sources = replace_sources
  96         self.strip = strip
  97         self.full_gcc = full_gcc
  98         self.shallow = shallow
  99         self.srcdir = os.path.join(topdir, 'src')
 100         self.versions_json = os.path.join(self.srcdir, 'versions.json')
 101         self.build_state_json = os.path.join(topdir, 'build-state.json')
 102         self.bot_config_json = os.path.join(topdir, 'bot-config.json')
 103         self.installdir = os.path.join(topdir, 'install')
 104         self.host_libraries_installdir = os.path.join(self.installdir,
 105                                                       'host-libraries')
 106         self.builddir = os.path.join(topdir, 'build')
 107         self.logsdir = os.path.join(topdir, 'logs')
 108         self.logsdir_old = os.path.join(topdir, 'logs-old')
 109         self.makefile = os.path.join(self.builddir, 'Makefile')
 110         self.wrapper = os.path.join(self.builddir, 'wrapper')
 111         self.save_logs = os.path.join(self.builddir, 'save-logs')
 112         self.script_text = self.get_script_text()
 113         if action not in ('checkout', 'list-compilers', 'list-glibcs'):
 114             self.build_triplet = self.get_build_triplet()
 115             self.glibc_version = self.get_glibc_version()
 116         self.configs = {}
 117         self.glibc_configs = {}
 118         self.makefile_pieces = ['.PHONY: all\n']
 119         self.add_all_configs()
 120         self.load_versions_json()
 121         self.load_build_state_json()
 122         self.status_log_list = []
 123         self.email_warning = False
 124
 125     def get_script_text(self):
 126         """Return the text of this script."""
 127         with open(sys.argv[0], 'r') as f:
 128             return f.read()
 129
 130     def exec_self(self):
 131         """Re-execute this script with the same arguments."""
 132         sys.stdout.flush()
 133         os.execv(sys.executable, [sys.executable] + sys.argv)
 134
 135     def get_build_triplet(self):
 136         """Determine the build triplet with config.guess."""
 137         config_guess = os.path.join(self.component_srcdir('gcc'),
 138                                     'config.guess')
 139         cg_out = subprocess.run([config_guess], stdout=subprocess.PIPE,
 140                                 check=True, universal_newlines=True).stdout
 141         return cg_out.rstrip()
 142
 143     def get_glibc_version(self):
 144         """Determine the glibc version number (major.minor)."""
 145         version_h = os.path.join(self.component_srcdir('glibc'), 'version.h')
 146         with open(version_h, 'r') as f:
 147             lines = f.readlines()
 148         starttext = '#define VERSION "'
 149         for l in lines:
 150             if l.startswith(starttext):
 151                 l = l[len(starttext):]
 152                 l = l.rstrip('"\n')
 153                 m = re.fullmatch('([0-9]+)\.([0-9]+)[.0-9]*', l)
 154                 return '%s.%s' % m.group(1, 2)
 155         print('error: could not determine glibc version')
 156         exit(1)
 157
 158     def add_all_configs(self):
 159         """Add all known glibc build configurations."""
 160         self.add_config(arch='aarch64',
 161                         os_name='linux-gnu',
 162                         extra_glibcs=[{'variant': 'disable-multi-arch',
 163                                        'cfg': ['--disable-multi-arch']}])
 164         self.add_config(arch='aarch64_be',
 165                         os_name='linux-gnu')
 166         self.add_config(arch='arc',
 167                         os_name='linux-gnu',
 168                         gcc_cfg=['--disable-multilib', '--with-cpu=hs38'])
 169         self.add_config(arch='arc',
 170                         os_name='linux-gnuhf',
 171                         gcc_cfg=['--disable-multilib', '--with-cpu=hs38_linux'])
 172         self.add_config(arch='arceb',
 173                         os_name='linux-gnu',
 174                         gcc_cfg=['--disable-multilib', '--with-cpu=hs38'])
 175         self.add_config(arch='alpha',
 176                         os_name='linux-gnu')
 177         self.add_config(arch='arm',
 178                         os_name='linux-gnueabi',
 179                         extra_glibcs=[{'variant': 'v4t',
 180                                        'ccopts': '-march=armv4t'}])
 181         self.add_config(arch='armeb',
 182                         os_name='linux-gnueabi')
 183         self.add_config(arch='armeb',
 184                         os_name='linux-gnueabi',
 185                         variant='be8',
 186                         gcc_cfg=['--with-arch=armv7-a'])
 187         self.add_config(arch='arm',
 188                         os_name='linux-gnueabihf',
 189                         gcc_cfg=['--with-float=hard', '--with-cpu=arm926ej-s'],
 190                         extra_glibcs=[{'variant': 'v7a',
 191                                        'ccopts': '-march=armv7-a -mfpu=vfpv3'},
 192                                       {'variant': 'thumb',
 193                                        'ccopts':
 194                                        '-mthumb -march=armv7-a -mfpu=vfpv3'},
 195                                       {'variant': 'v7a-disable-multi-arch',
 196                                        'ccopts': '-march=armv7-a -mfpu=vfpv3',
 197                                        'cfg': ['--disable-multi-arch']}])
 198         self.add_config(arch='armeb',
 199                         os_name='linux-gnueabihf',
 200                         gcc_cfg=['--with-float=hard', '--with-cpu=arm926ej-s'])
 201         self.add_config(arch='armeb',
 202                         os_name='linux-gnueabihf',
 203                         variant='be8',
 204                         gcc_cfg=['--with-float=hard', '--with-arch=armv7-a',
 205                                  '--with-fpu=vfpv3'])
 206         self.add_config(arch='csky',
 207                         os_name='linux-gnuabiv2',
 208                         variant='soft',
 209                         gcc_cfg=['--disable-multilib'])
 210         self.add_config(arch='csky',
 211                         os_name='linux-gnuabiv2',
 212                         gcc_cfg=['--with-float=hard', '--disable-multilib'])
 213         self.add_config(arch='hppa',
 214                         os_name='linux-gnu')
 215         self.add_config(arch='i686',
 216                         os_name='gnu')
 217         self.add_config(arch='ia64',
 218                         os_name='linux-gnu',
 219                         first_gcc_cfg=['--with-system-libunwind'],
 220                         binutils_cfg=['--enable-obsolete'])
 221         self.add_config(arch='loongarch64',
 222                         os_name='linux-gnu',
 223                         variant='lp64d',
 224                         gcc_cfg=['--with-abi=lp64d','--disable-multilib'])
 225         self.add_config(arch='loongarch64',
 226                         os_name='linux-gnu',
 227                         variant='lp64s',
 228                         gcc_cfg=['--with-abi=lp64s','--disable-multilib'])
 229         self.add_config(arch='m68k',
 230                         os_name='linux-gnu',
 231                         gcc_cfg=['--disable-multilib'])
 232         self.add_config(arch='m68k',
 233                         os_name='linux-gnu',
 234                         variant='coldfire',
 235                         gcc_cfg=['--with-arch=cf', '--disable-multilib'])
 236         self.add_config(arch='m68k',
 237                         os_name='linux-gnu',
 238                         variant='coldfire-soft',
 239                         gcc_cfg=['--with-arch=cf', '--with-cpu=54455',
 240                                  '--disable-multilib'])
 241         self.add_config(arch='microblaze',
 242                         os_name='linux-gnu',
 243                         gcc_cfg=['--disable-multilib'])
 244         self.add_config(arch='microblazeel',
 245                         os_name='linux-gnu',
 246                         gcc_cfg=['--disable-multilib'])
 247         self.add_config(arch='mips64',
 248                         os_name='linux-gnu',
 249                         gcc_cfg=['--with-mips-plt'],
 250                         glibcs=[{'variant': 'n32'},
 251                                 {'arch': 'mips',
 252                                  'ccopts': '-mabi=32'},
 253                                 {'variant': 'n64',
 254                                  'ccopts': '-mabi=64'}])
 255         self.add_config(arch='mips64',
 256                         os_name='linux-gnu',
 257                         variant='soft',
 258                         gcc_cfg=['--with-mips-plt', '--with-float=soft'],
 259                         glibcs=[{'variant': 'n32-soft'},
 260                                 {'variant': 'soft',
 261                                  'arch': 'mips',
 262                                  'ccopts': '-mabi=32'},
 263                                 {'variant': 'n64-soft',
 264                                  'ccopts': '-mabi=64'}])
 265         self.add_config(arch='mips64',
 266                         os_name='linux-gnu',
 267                         variant='nan2008',
 268                         gcc_cfg=['--with-mips-plt', '--with-nan=2008',
 269                                  '--with-arch-64=mips64r2',
 270                                  '--with-arch-32=mips32r2'],
 271                         glibcs=[{'variant': 'n32-nan2008'},
 272                                 {'variant': 'nan2008',
 273                                  'arch': 'mips',
 274                                  'ccopts': '-mabi=32'},
 275                                 {'variant': 'n64-nan2008',
 276                                  'ccopts': '-mabi=64'}])
 277         self.add_config(arch='mips64',
 278                         os_name='linux-gnu',
 279                         variant='nan2008-soft',
 280                         gcc_cfg=['--with-mips-plt', '--with-nan=2008',
 281                                  '--with-arch-64=mips64r2',
 282                                  '--with-arch-32=mips32r2',
 283                                  '--with-float=soft'],
 284                         glibcs=[{'variant': 'n32-nan2008-soft'},
 285                                 {'variant': 'nan2008-soft',
 286                                  'arch': 'mips',
 287                                  'ccopts': '-mabi=32'},
 288                                 {'variant': 'n64-nan2008-soft',
 289                                  'ccopts': '-mabi=64'}])
 290         self.add_config(arch='mips64el',
 291                         os_name='linux-gnu',
 292                         gcc_cfg=['--with-mips-plt'],
 293                         glibcs=[{'variant': 'n32'},
 294                                 {'arch': 'mipsel',
 295                                  'ccopts': '-mabi=32'},
 296                                 {'variant': 'n64',
 297                                  'ccopts': '-mabi=64'}])
 298         self.add_config(arch='mips64el',
 299                         os_name='linux-gnu',
 300                         variant='soft',
 301                         gcc_cfg=['--with-mips-plt', '--with-float=soft'],
 302                         glibcs=[{'variant': 'n32-soft'},
 303                                 {'variant': 'soft',
 304                                  'arch': 'mipsel',
 305                                  'ccopts': '-mabi=32'},
 306                                 {'variant': 'n64-soft',
 307                                  'ccopts': '-mabi=64'}])
 308         self.add_config(arch='mips64el',
 309                         os_name='linux-gnu',
 310                         variant='nan2008',
 311                         gcc_cfg=['--with-mips-plt', '--with-nan=2008',
 312                                  '--with-arch-64=mips64r2',
 313                                  '--with-arch-32=mips32r2'],
 314                         glibcs=[{'variant': 'n32-nan2008'},
 315                                 {'variant': 'nan2008',
 316                                  'arch': 'mipsel',
 317                                  'ccopts': '-mabi=32'},
 318                                 {'variant': 'n64-nan2008',
 319                                  'ccopts': '-mabi=64'}])
 320         self.add_config(arch='mips64el',
 321                         os_name='linux-gnu',
 322                         variant='nan2008-soft',
 323                         gcc_cfg=['--with-mips-plt', '--with-nan=2008',
 324                                  '--with-arch-64=mips64r2',
 325                                  '--with-arch-32=mips32r2',
 326                                  '--with-float=soft'],
 327                         glibcs=[{'variant': 'n32-nan2008-soft'},
 328                                 {'variant': 'nan2008-soft',
 329                                  'arch': 'mipsel',
 330                                  'ccopts': '-mabi=32'},
 331                                 {'variant': 'n64-nan2008-soft',
 332                                  'ccopts': '-mabi=64'}])
 333         self.add_config(arch='mipsisa64r6el',
 334                         os_name='linux-gnu',
 335                         gcc_cfg=['--with-mips-plt', '--with-nan=2008',
 336                                  '--with-arch-64=mips64r6',
 337                                  '--with-arch-32=mips32r6',
 338                                  '--with-float=hard'],
 339                         glibcs=[{'variant': 'n32'},
 340                                 {'arch': 'mipsisa32r6el',
 341                                  'ccopts': '-mabi=32'},
 342                                 {'variant': 'n64',
 343                                  'ccopts': '-mabi=64'}])
 344         self.add_config(arch='nios2',
 345                         os_name='linux-gnu')
 346         self.add_config(arch='or1k',
 347                         os_name='linux-gnu',
 348                         variant='soft',
 349                         gcc_cfg=['--with-multilib-list=mcmov'])
 350         self.add_config(arch='powerpc',
 351                         os_name='linux-gnu',
 352                         gcc_cfg=['--disable-multilib', '--enable-secureplt'],
 353                         extra_glibcs=[{'variant': 'power4',
 354                                        'ccopts': '-mcpu=power4',
 355                                        'cfg': ['--with-cpu=power4']}])
 356         self.add_config(arch='powerpc',
 357                         os_name='linux-gnu',
 358                         variant='soft',
 359                         gcc_cfg=['--disable-multilib', '--with-float=soft',
 360                                  '--enable-secureplt'])
 361         self.add_config(arch='powerpc64',
 362                         os_name='linux-gnu',
 363                         gcc_cfg=['--disable-multilib', '--enable-secureplt'])
 364         self.add_config(arch='powerpc64le',
 365                         os_name='linux-gnu',
 366                         gcc_cfg=['--disable-multilib', '--enable-secureplt'],
 367                         extra_glibcs=[{'variant': 'disable-multi-arch',
 368                                        'cfg': ['--disable-multi-arch']}])
 369         self.add_config(arch='riscv32',
 370                         os_name='linux-gnu',
 371                         variant='rv32imac-ilp32',
 372                         gcc_cfg=['--with-arch=rv32imac', '--with-abi=ilp32',
 373                                  '--disable-multilib'])
 374         self.add_config(arch='riscv32',
 375                         os_name='linux-gnu',
 376                         variant='rv32imafdc-ilp32',
 377                         gcc_cfg=['--with-arch=rv32imafdc', '--with-abi=ilp32',
 378                                  '--disable-multilib'])
 379         self.add_config(arch='riscv32',
 380                         os_name='linux-gnu',
 381                         variant='rv32imafdc-ilp32d',
 382                         gcc_cfg=['--with-arch=rv32imafdc', '--with-abi=ilp32d',
 383                                  '--disable-multilib'])
 384         self.add_config(arch='riscv64',
 385                         os_name='linux-gnu',
 386                         variant='rv64imac-lp64',
 387                         gcc_cfg=['--with-arch=rv64imac', '--with-abi=lp64',
 388                                  '--disable-multilib'])
 389         self.add_config(arch='riscv64',
 390                         os_name='linux-gnu',
 391                         variant='rv64imafdc-lp64',
 392                         gcc_cfg=['--with-arch=rv64imafdc', '--with-abi=lp64',
 393                                  '--disable-multilib'])
 394         self.add_config(arch='riscv64',
 395                         os_name='linux-gnu',
 396                         variant='rv64imafdc-lp64d',
 397                         gcc_cfg=['--with-arch=rv64imafdc', '--with-abi=lp64d',
 398                                  '--disable-multilib'])
 399         self.add_config(arch='s390x',
 400                         os_name='linux-gnu',
 401                         glibcs=[{},
 402                                 {'arch': 's390', 'ccopts': '-m31'}],
 403                         extra_glibcs=[{'variant': 'O3',
 404                                        'cflags': '-O3'}])
 405         self.add_config(arch='sh3',
 406                         os_name='linux-gnu')
 407         self.add_config(arch='sh3eb',
 408                         os_name='linux-gnu')
 409         self.add_config(arch='sh4',
 410                         os_name='linux-gnu')
 411         self.add_config(arch='sh4eb',
 412                         os_name='linux-gnu')
 413         self.add_config(arch='sh4',
 414                         os_name='linux-gnu',
 415                         variant='soft',
 416                         gcc_cfg=['--without-fp'])
 417         self.add_config(arch='sh4eb',
 418                         os_name='linux-gnu',
 419                         variant='soft',
 420                         gcc_cfg=['--without-fp'])
 421         self.add_config(arch='sparc64',
 422                         os_name='linux-gnu',
 423                         glibcs=[{},
 424                                 {'arch': 'sparcv9',
 425                                  'ccopts': '-m32 -mlong-double-128 -mcpu=v9'}],
 426                         extra_glibcs=[{'variant': 'leon3',
 427                                        'arch' : 'sparcv8',
 428                                        'ccopts' : '-m32 -mlong-double-128 -mcpu=leon3'},
 429                                       {'variant': 'disable-multi-arch',
 430                                        'cfg': ['--disable-multi-arch']},
 431                                       {'variant': 'disable-multi-arch',
 432                                        'arch': 'sparcv9',
 433                                        'ccopts': '-m32 -mlong-double-128 -mcpu=v9',
 434                                        'cfg': ['--disable-multi-arch']}])
 435         self.add_config(arch='x86_64',
 436                         os_name='linux-gnu',
 437                         gcc_cfg=['--with-multilib-list=m64,m32,mx32'],
 438                         glibcs=[{},
 439                                 {'variant': 'x32', 'ccopts': '-mx32'},
 440                                 {'arch': 'i686', 'ccopts': '-m32 -march=i686'}],
 441                         extra_glibcs=[{'variant': 'disable-multi-arch',
 442                                        'cfg': ['--disable-multi-arch']},
 443                                       {'variant': 'minimal',
 444                                        'cfg': ['--disable-multi-arch',
 445                                                '--disable-profile',
 446                                                '--disable-timezone-tools',
 447                                                '--disable-mathvec',
 448                                                '--disable-tunables',
 449                                                '--disable-crypt',
 450                                                '--disable-experimental-malloc',
 451                                                '--disable-build-nscd',
 452                                                '--disable-nscd']},
 453                                       {'variant': 'no-pie',
 454                                        'cfg': ['--disable-default-pie']},
 455                                       {'variant': 'x32-no-pie',
 456                                        'ccopts': '-mx32',
 457                                        'cfg': ['--disable-default-pie']},
 458                                       {'variant': 'no-pie',
 459                                        'arch': 'i686',
 460                                        'ccopts': '-m32 -march=i686',
 461                                        'cfg': ['--disable-default-pie']},
 462                                       {'variant': 'disable-multi-arch',
 463                                        'arch': 'i686',
 464                                        'ccopts': '-m32 -march=i686',
 465                                        'cfg': ['--disable-multi-arch']},
 466                                       {'arch': 'i486',
 467                                        'ccopts': '-m32 -march=i486'},
 468                                       {'arch': 'i586',
 469                                        'ccopts': '-m32 -march=i586'}])
 470
 471     def add_config(self, **args):
 472         """Add an individual build configuration."""
 473         cfg = Config(self, **args)
 474         if cfg.name in self.configs:
 475             print('error: duplicate config %s' % cfg.name)
 476             exit(1)
 477         self.configs[cfg.name] = cfg
 478         for c in cfg.all_glibcs:
 479             if c.name in self.glibc_configs:
 480                 print('error: duplicate glibc config %s' % c.name)
 481                 exit(1)
 482             self.glibc_configs[c.name] = c
 483
 484     def component_srcdir(self, component):
 485         """Return the source directory for a given component, e.g. gcc."""
 486         return os.path.join(self.srcdir, component)
 487
 488     def component_builddir(self, action, config, component, subconfig=None):
 489         """Return the directory to use for a build."""
 490         if config is None:
 491             # Host libraries.
 492             assert subconfig is None
 493             return os.path.join(self.builddir, action, component)
 494         if subconfig is None:
 495             return os.path.join(self.builddir, action, config, component)
 496         else:
 497             # glibc build as part of compiler build.
 498             return os.path.join(self.builddir, action, config, component,
 499                                 subconfig)
 500
 501     def compiler_installdir(self, config):
 502         """Return the directory in which to install a compiler."""
 503         return os.path.join(self.installdir, 'compilers', config)
 504
 505     def compiler_bindir(self, config):
 506         """Return the directory in which to find compiler binaries."""
 507         return os.path.join(self.compiler_installdir(config), 'bin')
 508
 509     def compiler_sysroot(self, config):
 510         """Return the sysroot directory for a compiler."""
 511         return os.path.join(self.compiler_installdir(config), 'sysroot')
 512
 513     def glibc_installdir(self, config):
 514         """Return the directory in which to install glibc."""
 515         return os.path.join(self.installdir, 'glibcs', config)
 516
 517     def run_builds(self, action, configs):
 518         """Run the requested builds."""
 519         if action == 'checkout':
 520             self.checkout(configs)
 521             return
 522         if action == 'bot-cycle':
 523             if configs:
 524                 print('error: configurations specified for bot-cycle')
 525                 exit(1)
 526             self.bot_cycle()
 527             return
 528         if action == 'bot':
 529             if configs:
 530                 print('error: configurations specified for bot')
 531                 exit(1)
 532             self.bot()
 533             return
 534         if action in ('host-libraries', 'list-compilers',
 535                       'list-glibcs') and configs:
 536             print('error: configurations specified for ' + action)
 537             exit(1)
 538         if action == 'list-compilers':
 539             for name in sorted(self.configs.keys()):
 540                 print(name)
 541             return
 542         if action == 'list-glibcs':
 543             for config in sorted(self.glibc_configs.values(),
 544                                  key=lambda c: c.name):
 545                 print(config.name, config.compiler.name)
 546             return
 547         self.clear_last_build_state(action)
 548         build_time = datetime.datetime.utcnow()
 549         if action == 'host-libraries':
 550             build_components = ('gmp', 'mpfr', 'mpc')
 551             old_components = ()
 552             old_versions = {}
 553             self.build_host_libraries()
 554         elif action == 'compilers':
 555             build_components = ('binutils', 'gcc', 'glibc', 'linux', 'mig',
 556                                 'gnumach', 'hurd')
 557             old_components = ('gmp', 'mpfr', 'mpc')
 558             old_versions = self.build_state['host-libraries']['build-versions']
 559             self.build_compilers(configs)
 560         else:
 561             build_components = ('glibc',)
 562             old_components = ('gmp', 'mpfr', 'mpc', 'binutils', 'gcc', 'linux',
 563                               'mig', 'gnumach', 'hurd')
 564             old_versions = self.build_state['compilers']['build-versions']
 565             if action == 'update-syscalls':
 566                 self.update_syscalls(configs)
 567             else:
 568                 self.build_glibcs(configs)
 569         self.write_files()
 570         self.do_build()
 571         if configs:
 572             # Partial build, do not update stored state.
 573             return
 574         build_versions = {}
 575         for k in build_components:
 576             if k in self.versions:
 577                 build_versions[k] = {'version': self.versions[k]['version'],
 578                                      'revision': self.versions[k]['revision']}
 579         for k in old_components:
 580             if k in old_versions:
 581                 build_versions[k] = {'version': old_versions[k]['version'],
 582                                      'revision': old_versions[k]['revision']}
 583         self.update_build_state(action, build_time, build_versions)
 584
 585     @staticmethod
 586     def remove_dirs(*args):
 587         """Remove directories and their contents if they exist."""
 588         for dir in args:
 589             shutil.rmtree(dir, ignore_errors=True)
 590
 591     @staticmethod
 592     def remove_recreate_dirs(*args):
 593         """Remove directories if they exist, and create them as empty."""
 594         Context.remove_dirs(*args)
 595         for dir in args:
 596             os.makedirs(dir, exist_ok=True)
 597
 598     def add_makefile_cmdlist(self, target, cmdlist, logsdir):
 599         """Add makefile text for a list of commands."""
 600         commands = cmdlist.makefile_commands(self.wrapper, logsdir)
 601         self.makefile_pieces.append('all: %s\n.PHONY: %s\n%s:\n%s\n' %
 602                                     (target, target, target, commands))
 603         self.status_log_list.extend(cmdlist.status_logs(logsdir))
 604
 605     def write_files(self):
 606         """Write out the Makefile and wrapper script."""
 607         mftext = ''.join(self.makefile_pieces)
 608         with open(self.makefile, 'w') as f:
 609             f.write(mftext)
 610         wrapper_text = (
 611             '#!/bin/sh\n'
 612             'prev_base=$1\n'
 613             'this_base=$2\n'
 614             'desc=$3\n'
 615             'dir=$4\n'
 616             'path=$5\n'
 617             'shift 5\n'
 618             'prev_status=$prev_base-status.txt\n'
 619             'this_status=$this_base-status.txt\n'
 620             'this_log=$this_base-log.txt\n'
 621             'date > "$this_log"\n'
 622             'echo >> "$this_log"\n'
 623             'echo "Description: $desc" >> "$this_log"\n'
 624             'printf "%s" "Command:" >> "$this_log"\n'
 625             'for word in "$@"; do\n'
 626             '  if expr "$word" : "[]+,./0-9@A-Z_a-z-]\\\\{1,\\\\}\\$" > /dev/null; then\n'
 627             '    printf " %s" "$word"\n'
 628             '  else\n'
 629             '    printf " \'"\n'
 630             '    printf "%s" "$word" | sed -e "s/\'/\'\\\\\\\\\'\'/"\n'
 631             '    printf "\'"\n'
 632             '  fi\n'
 633             'done >> "$this_log"\n'
 634             'echo >> "$this_log"\n'
 635             'echo "Directory: $dir" >> "$this_log"\n'
 636             'echo "Path addition: $path" >> "$this_log"\n'
 637             'echo >> "$this_log"\n'
 638             'record_status ()\n'
 639             '{\n'
 640             '  echo >> "$this_log"\n'
 641             '  echo "$1: $desc" > "$this_status"\n'
 642             '  echo "$1: $desc" >> "$this_log"\n'
 643             '  echo >> "$this_log"\n'
 644             '  date >> "$this_log"\n'
 645             '  echo "$1: $desc"\n'
 646             '  exit 0\n'
 647             '}\n'
 648             'check_error ()\n'
 649             '{\n'
 650             '  if [ "$1" != "0" ]; then\n'
 651             '    record_status FAIL\n'
 652             '  fi\n'
 653             '}\n'
 654             'if [ "$prev_base" ] && ! grep -q "^PASS" "$prev_status"; then\n'
 655             '    record_status UNRESOLVED\n'
 656             'fi\n'
 657             'if [ "$dir" ]; then\n'
 658             '  cd "$dir"\n'
 659             '  check_error "$?"\n'
 660             'fi\n'
 661             'if [ "$path" ]; then\n'
 662             '  PATH=$path:$PATH\n'
 663             'fi\n'
 664             '"$@" < /dev/null >> "$this_log" 2>&1\n'
 665             'check_error "$?"\n'
 666             'record_status PASS\n')
 667         with open(self.wrapper, 'w') as f:
 668             f.write(wrapper_text)
 669         # Mode 0o755.
 670         mode_exec = (stat.S_IRWXU|stat.S_IRGRP|stat.S_IXGRP|
 671                      stat.S_IROTH|stat.S_IXOTH)
 672         os.chmod(self.wrapper, mode_exec)
 673         save_logs_text = (
 674             '#!/bin/sh\n'
 675             'if ! [ -f tests.sum ]; then\n'
 676             '  echo "No test summary available."\n'
 677             '  exit 0\n'
 678             'fi\n'
 679             'save_file ()\n'
 680             '{\n'
 681             '  echo "Contents of $1:"\n'
 682             '  echo\n'
 683             '  cat "$1"\n'
 684             '  echo\n'
 685             '  echo "End of contents of $1."\n'
 686             '  echo\n'
 687             '}\n'
 688             'save_file tests.sum\n'
 689             'non_pass_tests=$(grep -v "^PASS: " tests.sum | sed -e "s/^PASS: //")\n'
 690             'for t in $non_pass_tests; do\n'
 691             '  if [ -f "$t.out" ]; then\n'
 692             '    save_file "$t.out"\n'
 693             '  fi\n'
 694             'done\n')
 695         with open(self.save_logs, 'w') as f:
 696             f.write(save_logs_text)
 697         os.chmod(self.save_logs, mode_exec)
 698
 699     def do_build(self):
 700         """Do the actual build."""
 701         cmd = ['make', '-O', '-j%d' % self.parallelism]
 702         subprocess.run(cmd, cwd=self.builddir, check=True)
 703
 704     def build_host_libraries(self):
 705         """Build the host libraries."""
 706         installdir = self.host_libraries_installdir
 707         builddir = os.path.join(self.builddir, 'host-libraries')
 708         logsdir = os.path.join(self.logsdir, 'host-libraries')
 709         self.remove_recreate_dirs(installdir, builddir, logsdir)
 710         cmdlist = CommandList('host-libraries', self.keep)
 711         self.build_host_library(cmdlist, 'gmp')
 712         self.build_host_library(cmdlist, 'mpfr',
 713                                 ['--with-gmp=%s' % installdir])
 714         self.build_host_library(cmdlist, 'mpc',
 715                                 ['--with-gmp=%s' % installdir,
 716                                 '--with-mpfr=%s' % installdir])
 717         cmdlist.add_command('done', ['touch', os.path.join(installdir, 'ok')])
 718         self.add_makefile_cmdlist('host-libraries', cmdlist, logsdir)
 719
 720     def build_host_library(self, cmdlist, lib, extra_opts=None):
 721         """Build one host library."""
 722         srcdir = self.component_srcdir(lib)
 723         builddir = self.component_builddir('host-libraries', None, lib)
 724         installdir = self.host_libraries_installdir
 725         cmdlist.push_subdesc(lib)
 726         cmdlist.create_use_dir(builddir)
 727         cfg_cmd = [os.path.join(srcdir, 'configure'),
 728                    '--prefix=%s' % installdir,
 729                    '--disable-shared']
 730         if extra_opts:
 731             cfg_cmd.extend (extra_opts)
 732         cmdlist.add_command('configure', cfg_cmd)
 733         cmdlist.add_command('build', ['make'])
 734         cmdlist.add_command('check', ['make', 'check'])
 735         cmdlist.add_command('install', ['make', 'install'])
 736         cmdlist.cleanup_dir()
 737         cmdlist.pop_subdesc()
 738
 739     def build_compilers(self, configs):
 740         """Build the compilers."""
 741         if not configs:
 742             self.remove_dirs(os.path.join(self.builddir, 'compilers'))
 743             self.remove_dirs(os.path.join(self.installdir, 'compilers'))
 744             self.remove_dirs(os.path.join(self.logsdir, 'compilers'))
 745             configs = sorted(self.configs.keys())
 746         for c in configs:
 747             self.configs[c].build()
 748
 749     def build_glibcs(self, configs):
 750         """Build the glibcs."""
 751         if not configs:
 752             self.remove_dirs(os.path.join(self.builddir, 'glibcs'))
 753             self.remove_dirs(os.path.join(self.installdir, 'glibcs'))
 754             self.remove_dirs(os.path.join(self.logsdir, 'glibcs'))
 755             configs = sorted(self.glibc_configs.keys())
 756         for c in configs:
 757             self.glibc_configs[c].build()
 758
 759     def update_syscalls(self, configs):
 760         """Update the glibc syscall lists."""
 761         if not configs:
 762             self.remove_dirs(os.path.join(self.builddir, 'update-syscalls'))
 763             self.remove_dirs(os.path.join(self.logsdir, 'update-syscalls'))
 764             configs = sorted(self.glibc_configs.keys())
 765         for c in configs:
 766             self.glibc_configs[c].update_syscalls()
 767
 768     def load_versions_json(self):
 769         """Load information about source directory versions."""
 770         if not os.access(self.versions_json, os.F_OK):
 771             self.versions = {}
 772             return
 773         with open(self.versions_json, 'r') as f:
 774             self.versions = json.load(f)
 775
 776     def store_json(self, data, filename):
 777         """Store information in a JSON file."""
 778         filename_tmp = filename + '.tmp'
 779         with open(filename_tmp, 'w') as f:
 780             json.dump(data, f, indent=2, sort_keys=True)
 781         os.rename(filename_tmp, filename)
 782
 783     def store_versions_json(self):
 784         """Store information about source directory versions."""
 785         self.store_json(self.versions, self.versions_json)
 786
 787     def set_component_version(self, component, version, explicit, revision):
 788         """Set the version information for a component."""
 789         self.versions[component] = {'version': version,
 790                                     'explicit': explicit,
 791                                     'revision': revision}
 792         self.store_versions_json()
 793
 794     def checkout(self, versions):
 795         """Check out the desired component versions."""
 796         default_versions = {'binutils': 'vcs-2.39',
 797                             'gcc': 'vcs-12',
 798                             'glibc': 'vcs-mainline',
 799                             'gmp': '6.2.1',
 800                             'linux': '6.1',
 801                             'mpc': '1.3.1',
 802                             'mpfr': '4.2.0',
 803                             'mig': 'vcs-mainline',
 804                             'gnumach': 'vcs-mainline',
 805                             'hurd': 'vcs-mainline'}
 806         use_versions = {}
 807         explicit_versions = {}
 808         for v in versions:
 809             found_v = False
 810             for k in default_versions.keys():
 811                 kx = k + '-'
 812                 if v.startswith(kx):
 813                     vx = v[len(kx):]
 814                     if k in use_versions:
 815                         print('error: multiple versions for %s' % k)
 816                         exit(1)
 817                     use_versions[k] = vx
 818                     explicit_versions[k] = True
 819                     found_v = True
 820                     break
 821             if not found_v:
 822                 print('error: unknown component in %s' % v)
 823                 exit(1)
 824         for k in default_versions.keys():
 825             if k not in use_versions:
 826                 if k in self.versions and self.versions[k]['explicit']:
 827                     use_versions[k] = self.versions[k]['version']
 828                     explicit_versions[k] = True
 829                 else:
 830                     use_versions[k] = default_versions[k]
 831                     explicit_versions[k] = False
 832         os.makedirs(self.srcdir, exist_ok=True)
 833         for k in sorted(default_versions.keys()):
 834             update = os.access(self.component_srcdir(k), os.F_OK)
 835             v = use_versions[k]
 836             if (update and
 837                 k in self.versions and
 838                 v != self.versions[k]['version']):
 839                 if not self.replace_sources:
 840                     print('error: version of %s has changed from %s to %s, '
 841                           'use --replace-sources to check out again' %
 842                           (k, self.versions[k]['version'], v))
 843                     exit(1)
 844                 shutil.rmtree(self.component_srcdir(k))
 845                 update = False
 846             if v.startswith('vcs-'):
 847                 revision = self.checkout_vcs(k, v[4:], update)
 848             else:
 849                 self.checkout_tar(k, v, update)
 850                 revision = v
 851             self.set_component_version(k, v, explicit_versions[k], revision)
 852         if self.get_script_text() != self.script_text:
 853             # Rerun the checkout process in case the updated script
 854             # uses different default versions or new components.
 855             self.exec_self()
 856
 857     def checkout_vcs(self, component, version, update):
 858         """Check out the given version of the given component from version
 859         control.  Return a revision identifier."""
 860         if component == 'binutils':
 861             git_url = 'https://sourceware.org/git/binutils-gdb.git'
 862             if version == 'mainline':
 863                 git_branch = 'master'
 864             else:
 865                 trans = str.maketrans({'.': '_'})
 866                 git_branch = 'binutils-%s-branch' % version.translate(trans)
 867             return self.git_checkout(component, git_url, git_branch, update)
 868         elif component == 'gcc':
 869             if version == 'mainline':
 870                 branch = 'master'
 871             else:
 872                 branch = 'releases/gcc-%s' % version
 873             return self.gcc_checkout(branch, update)
 874         elif component == 'glibc':
 875             git_url = 'https://sourceware.org/git/glibc.git'
 876             if version == 'mainline':
 877                 git_branch = 'master'
 878             else:
 879                 git_branch = 'release/%s/master' % version
 880             r = self.git_checkout(component, git_url, git_branch, update)
 881             self.fix_glibc_timestamps()
 882             return r
 883         elif component == 'gnumach':
 884             git_url = 'git://git.savannah.gnu.org/hurd/gnumach.git'
 885             git_branch = 'master'
 886             r = self.git_checkout(component, git_url, git_branch, update)
 887             subprocess.run(['autoreconf', '-i'],
 888                            cwd=self.component_srcdir(component), check=True)
 889             return r
 890         elif component == 'mig':
 891             git_url = 'git://git.savannah.gnu.org/hurd/mig.git'
 892             git_branch = 'master'
 893             r = self.git_checkout(component, git_url, git_branch, update)
 894             subprocess.run(['autoreconf', '-i'],
 895                            cwd=self.component_srcdir(component), check=True)
 896             return r
 897         elif component == 'hurd':
 898             git_url = 'git://git.savannah.gnu.org/hurd/hurd.git'
 899             git_branch = 'master'
 900             r = self.git_checkout(component, git_url, git_branch, update)
 901             subprocess.run(['autoconf'],
 902                            cwd=self.component_srcdir(component), check=True)
 903             return r
 904         else:
 905             print('error: component %s coming from VCS' % component)
 906             exit(1)
 907
 908     def git_checkout(self, component, git_url, git_branch, update):
 909         """Check out a component from git.  Return a commit identifier."""
 910         if update:
 911             subprocess.run(['git', 'remote', 'prune', 'origin'],
 912                            cwd=self.component_srcdir(component), check=True)
 913             if self.replace_sources:
 914                 subprocess.run(['git', 'clean', '-dxfq'],
 915                                cwd=self.component_srcdir(component), check=True)
 916             subprocess.run(['git', 'pull', '-q'],
 917                            cwd=self.component_srcdir(component), check=True)
 918         else:
 919             if self.shallow:
 920                 depth_arg = ('--depth', '1')
 921             else:
 922                 depth_arg = ()
 923             subprocess.run(['git', 'clone', '-q', '-b', git_branch,
 924                             *depth_arg, git_url,
 925                             self.component_srcdir(component)], check=True)
 926         r = subprocess.run(['git', 'rev-parse', 'HEAD'],
 927                            cwd=self.component_srcdir(component),
 928                            stdout=subprocess.PIPE,
 929                            check=True, universal_newlines=True).stdout
 930         return r.rstrip()
 931
 932     def fix_glibc_timestamps(self):
 933         """Fix timestamps in a glibc checkout."""
 934         # Ensure that builds do not try to regenerate generated files
 935         # in the source tree.
 936         srcdir = self.component_srcdir('glibc')
 937         # These files have Makefile dependencies to regenerate them in
 938         # the source tree that may be active during a normal build.
 939         # Some other files have such dependencies but do not need to
 940         # be touched because nothing in a build depends on the files
 941         # in question.
 942         for f in ('sysdeps/mach/hurd/bits/errno.h',):
 943             to_touch = os.path.join(srcdir, f)
 944             subprocess.run(['touch', '-c', to_touch], check=True)
 945         for dirpath, dirnames, filenames in os.walk(srcdir):
 946             for f in filenames:
 947                 if (f == 'configure' or
 948                     f == 'preconfigure' or
 949                     f.endswith('-kw.h')):
 950                     to_touch = os.path.join(dirpath, f)
 951                     subprocess.run(['touch', to_touch], check=True)
 952
 953     def gcc_checkout(self, branch, update):
 954         """Check out GCC from git.  Return the commit identifier."""
 955         if os.access(os.path.join(self.component_srcdir('gcc'), '.svn'),
 956                      os.F_OK):
 957             if not self.replace_sources:
 958                 print('error: GCC has moved from SVN to git, use '
 959                       '--replace-sources to check out again')
 960                 exit(1)
 961             shutil.rmtree(self.component_srcdir('gcc'))
 962             update = False
 963         if not update:
 964             self.git_checkout('gcc', 'https://gcc.gnu.org/git/gcc.git',
 965                               branch, update)
 966         subprocess.run(['contrib/gcc_update', '--silent'],
 967                        cwd=self.component_srcdir('gcc'), check=True)
 968         r = subprocess.run(['git', 'rev-parse', 'HEAD'],
 969                            cwd=self.component_srcdir('gcc'),
 970                            stdout=subprocess.PIPE,
 971                            check=True, universal_newlines=True).stdout
 972         return r.rstrip()
 973
 974     def checkout_tar(self, component, version, update):
 975         """Check out the given version of the given component from a
 976         tarball."""
 977         if update:
 978             return
 979         url_map = {'binutils': 'https://ftp.gnu.org/gnu/binutils/binutils-%(version)s.tar.bz2',
 980                    'gcc': 'https://ftp.gnu.org/gnu/gcc/gcc-%(version)s/gcc-%(version)s.tar.gz',
 981                    'gmp': 'https://ftp.gnu.org/gnu/gmp/gmp-%(version)s.tar.xz',
 982                    'linux': 'https://www.kernel.org/pub/linux/kernel/v%(major)s.x/linux-%(version)s.tar.xz',
 983                    'mpc': 'https://ftp.gnu.org/gnu/mpc/mpc-%(version)s.tar.gz',
 984                    'mpfr': 'https://ftp.gnu.org/gnu/mpfr/mpfr-%(version)s.tar.xz',
 985                    'mig': 'https://ftp.gnu.org/gnu/mig/mig-%(version)s.tar.bz2',
 986                    'gnumach': 'https://ftp.gnu.org/gnu/gnumach/gnumach-%(version)s.tar.bz2',
 987                    'hurd': 'https://ftp.gnu.org/gnu/hurd/hurd-%(version)s.tar.bz2'}
 988         if component not in url_map:
 989             print('error: component %s coming from tarball' % component)
 990             exit(1)
 991         version_major = version.split('.')[0]
 992         url = url_map[component] % {'version': version, 'major': version_major}
 993         filename = os.path.join(self.srcdir, url.split('/')[-1])
 994         response = urllib.request.urlopen(url)
 995         data = response.read()
 996         with open(filename, 'wb') as f:
 997             f.write(data)
 998         subprocess.run(['tar', '-C', self.srcdir, '-x', '-f', filename],
 999                        check=True)
1000         os.rename(os.path.join(self.srcdir, '%s-%s' % (component, version)),
1001                   self.component_srcdir(component))
1002         os.remove(filename)
1003
1004     def load_build_state_json(self):
1005         """Load information about the state of previous builds."""
1006         if os.access(self.build_state_json, os.F_OK):
1007             with open(self.build_state_json, 'r') as f:
1008                 self.build_state = json.load(f)
1009         else:
1010             self.build_state = {}
1011         for k in ('host-libraries', 'compilers', 'glibcs', 'update-syscalls'):
1012             if k not in self.build_state:
1013                 self.build_state[k] = {}
1014             if 'build-time' not in self.build_state[k]:
1015                 self.build_state[k]['build-time'] = ''
1016             if 'build-versions' not in self.build_state[k]:
1017                 self.build_state[k]['build-versions'] = {}
1018             if 'build-results' not in self.build_state[k]:
1019                 self.build_state[k]['build-results'] = {}
1020             if 'result-changes' not in self.build_state[k]:
1021                 self.build_state[k]['result-changes'] = {}
1022             if 'ever-passed' not in self.build_state[k]:
1023                 self.build_state[k]['ever-passed'] = []
1024
1025     def store_build_state_json(self):
1026         """Store information about the state of previous builds."""
1027         self.store_json(self.build_state, self.build_state_json)
1028
1029     def clear_last_build_state(self, action):
1030         """Clear information about the state of part of the build."""
1031         # We clear the last build time and versions when starting a
1032         # new build.  The results of the last build are kept around,
1033         # as comparison is still meaningful if this build is aborted
1034         # and a new one started.
1035         self.build_state[action]['build-time'] = ''
1036         self.build_state[action]['build-versions'] = {}
1037         self.store_build_state_json()
1038
1039     def update_build_state(self, action, build_time, build_versions):
1040         """Update the build state after a build."""
1041         build_time = build_time.replace(microsecond=0)
1042         self.build_state[action]['build-time'] = str(build_time)
1043         self.build_state[action]['build-versions'] = build_versions
1044         build_results = {}
1045         for log in self.status_log_list:
1046             with open(log, 'r') as f:
1047                 log_text = f.read()
1048             log_text = log_text.rstrip()
1049             m = re.fullmatch('([A-Z]+): (.*)', log_text)
1050             result = m.group(1)
1051             test_name = m.group(2)
1052             assert test_name not in build_results
1053             build_results[test_name] = result
1054         old_build_results = self.build_state[action]['build-results']
1055         self.build_state[action]['build-results'] = build_results
1056         result_changes = {}
1057         all_tests = set(old_build_results.keys()) | set(build_results.keys())
1058         for t in all_tests:
1059             if t in old_build_results:
1060                 old_res = old_build_results[t]
1061             else:
1062                 old_res = '(New test)'
1063             if t in build_results:
1064                 new_res = build_results[t]
1065             else:
1066                 new_res = '(Test removed)'
1067             if old_res != new_res:
1068                 result_changes[t] = '%s -> %s' % (old_res, new_res)
1069         self.build_state[action]['result-changes'] = result_changes
1070         old_ever_passed = {t for t in self.build_state[action]['ever-passed']
1071                            if t in build_results}
1072         new_passes = {t for t in build_results if build_results[t] == 'PASS'}
1073         self.build_state[action]['ever-passed'] = sorted(old_ever_passed |
1074                                                          new_passes)
1075         self.store_build_state_json()
1076
1077     def load_bot_config_json(self):
1078         """Load bot configuration."""
1079         with open(self.bot_config_json, 'r') as f:
1080             self.bot_config = json.load(f)
1081
1082     def part_build_old(self, action, delay):
1083         """Return whether the last build for a given action was at least a
1084         given number of seconds ago, or does not have a time recorded."""
1085         old_time_str = self.build_state[action]['build-time']
1086         if not old_time_str:
1087             return True
1088         old_time = datetime.datetime.strptime(old_time_str,
1089                                               '%Y-%m-%d %H:%M:%S')
1090         new_time = datetime.datetime.utcnow()
1091         delta = new_time - old_time
1092         return delta.total_seconds() >= delay
1093
1094     def bot_cycle(self):
1095         """Run a single round of checkout and builds."""
1096         print('Bot cycle starting %s.' % str(datetime.datetime.utcnow()))
1097         self.load_bot_config_json()
1098         actions = ('host-libraries', 'compilers', 'glibcs')
1099         self.bot_run_self(['--replace-sources'], 'checkout')
1100         self.load_versions_json()
1101         if self.get_script_text() != self.script_text:
1102             print('Script changed, re-execing.')
1103             # On script change, all parts of the build should be rerun.
1104             for a in actions:
1105                 self.clear_last_build_state(a)
1106             self.exec_self()
1107         check_components = {'host-libraries': ('gmp', 'mpfr', 'mpc'),
1108                             'compilers': ('binutils', 'gcc', 'glibc', 'linux',
1109                                           'mig', 'gnumach', 'hurd'),
1110                             'glibcs': ('glibc',)}
1111         must_build = {}
1112         for a in actions:
1113             build_vers = self.build_state[a]['build-versions']
1114             must_build[a] = False
1115             if not self.build_state[a]['build-time']:
1116                 must_build[a] = True
1117             old_vers = {}
1118             new_vers = {}
1119             for c in check_components[a]:
1120                 if c in build_vers:
1121                     old_vers[c] = build_vers[c]
1122                 new_vers[c] = {'version': self.versions[c]['version'],
1123                                'revision': self.versions[c]['revision']}
1124             if new_vers == old_vers:
1125                 print('Versions for %s unchanged.' % a)
1126             else:
1127                 print('Versions changed or rebuild forced for %s.' % a)
1128                 if a == 'compilers' and not self.part_build_old(
1129                         a, self.bot_config['compilers-rebuild-delay']):
1130                     print('Not requiring rebuild of compilers this soon.')
1131                 else:
1132                     must_build[a] = True
1133         if must_build['host-libraries']:
1134             must_build['compilers'] = True
1135         if must_build['compilers']:
1136             must_build['glibcs'] = True
1137         for a in actions:
1138             if must_build[a]:
1139                 print('Must rebuild %s.' % a)
1140                 self.clear_last_build_state(a)
1141             else:
1142                 print('No need to rebuild %s.' % a)
1143         if os.access(self.logsdir, os.F_OK):
1144             shutil.rmtree(self.logsdir_old, ignore_errors=True)
1145             shutil.copytree(self.logsdir, self.logsdir_old)
1146         for a in actions:
1147             if must_build[a]:
1148                 build_time = datetime.datetime.utcnow()
1149                 print('Rebuilding %s at %s.' % (a, str(build_time)))
1150                 self.bot_run_self([], a)
1151                 self.load_build_state_json()
1152                 self.bot_build_mail(a, build_time)
1153         print('Bot cycle done at %s.' % str(datetime.datetime.utcnow()))
1154
1155     def bot_build_mail(self, action, build_time):
1156         """Send email with the results of a build."""
1157         if not ('email-from' in self.bot_config and
1158                 'email-server' in self.bot_config and
1159                 'email-subject' in self.bot_config and
1160                 'email-to' in self.bot_config):
1161             if not self.email_warning:
1162                 print("Email not configured, not sending.")
1163                 self.email_warning = True
1164             return
1165
1166         build_time = build_time.replace(microsecond=0)
1167         subject = (self.bot_config['email-subject'] %
1168                    {'action': action,
1169                     'build-time': str(build_time)})
1170         results = self.build_state[action]['build-results']
1171         changes = self.build_state[action]['result-changes']
1172         ever_passed = set(self.build_state[action]['ever-passed'])
1173         versions = self.build_state[action]['build-versions']
1174         new_regressions = {k for k in changes if changes[k] == 'PASS -> FAIL'}
1175         all_regressions = {k for k in ever_passed if results[k] == 'FAIL'}
1176         all_fails = {k for k in results if results[k] == 'FAIL'}
1177         if new_regressions:
1178             new_reg_list = sorted(['FAIL: %s' % k for k in new_regressions])
1179             new_reg_text = ('New regressions:\n\n%s\n\n' %
1180                             '\n'.join(new_reg_list))
1181         else:
1182             new_reg_text = ''
1183         if all_regressions:
1184             all_reg_list = sorted(['FAIL: %s' % k for k in all_regressions])
1185             all_reg_text = ('All regressions:\n\n%s\n\n' %
1186                             '\n'.join(all_reg_list))
1187         else:
1188             all_reg_text = ''
1189         if all_fails:
1190             all_fail_list = sorted(['FAIL: %s' % k for k in all_fails])
1191             all_fail_text = ('All failures:\n\n%s\n\n' %
1192                              '\n'.join(all_fail_list))
1193         else:
1194             all_fail_text = ''
1195         if changes:
1196             changes_list = sorted(changes.keys())
1197             changes_list = ['%s: %s' % (changes[k], k) for k in changes_list]
1198             changes_text = ('All changed results:\n\n%s\n\n' %
1199                             '\n'.join(changes_list))
1200         else:
1201             changes_text = ''
1202         results_text = (new_reg_text + all_reg_text + all_fail_text +
1203                         changes_text)
1204         if not results_text:
1205             results_text = 'Clean build with unchanged results.\n\n'
1206         versions_list = sorted(versions.keys())
1207         versions_list = ['%s: %s (%s)' % (k, versions[k]['version'],
1208                                           versions[k]['revision'])
1209                          for k in versions_list]
1210         versions_text = ('Component versions for this build:\n\n%s\n' %
1211                          '\n'.join(versions_list))
1212         body_text = results_text + versions_text
1213         msg = email.mime.text.MIMEText(body_text)
1214         msg['Subject'] = subject
1215         msg['From'] = self.bot_config['email-from']
1216         msg['To'] = self.bot_config['email-to']
1217         msg['Message-ID'] = email.utils.make_msgid()
1218         msg['Date'] = email.utils.format_datetime(datetime.datetime.utcnow())
1219         with smtplib.SMTP(self.bot_config['email-server']) as s:
1220             s.send_message(msg)
1221
1222     def bot_run_self(self, opts, action, check=True):
1223         """Run a copy of this script with given options."""
1224         cmd = [sys.executable, sys.argv[0], '--keep=none',
1225                '-j%d' % self.parallelism]
1226         if self.full_gcc:
1227             cmd.append('--full-gcc')
1228         cmd.extend(opts)
1229         cmd.extend([self.topdir, action])
1230         sys.stdout.flush()
1231         subprocess.run(cmd, check=check)
1232
1233     def bot(self):
1234         """Run repeated rounds of checkout and builds."""
1235         while True:
1236             self.load_bot_config_json()
1237             if not self.bot_config['run']:
1238                 print('Bot exiting by request.')
1239                 exit(0)
1240             self.bot_run_self([], 'bot-cycle', check=False)
1241             self.load_bot_config_json()
1242             if not self.bot_config['run']:
1243                 print('Bot exiting by request.')
1244                 exit(0)
1245             time.sleep(self.bot_config['delay'])
1246             if self.get_script_text() != self.script_text:
1247                 print('Script changed, bot re-execing.')
1248                 self.exec_self()
1249
1250 class LinuxHeadersPolicyForBuild(object):
1251     """Names and directories for installing Linux headers.  Build variant."""
1252
1253     def __init__(self, config):
1254         self.arch = config.arch
1255         self.srcdir = config.ctx.component_srcdir('linux')
1256         self.builddir = config.component_builddir('linux')
1257         self.headers_dir = os.path.join(config.sysroot, 'usr')
1258
1259 class LinuxHeadersPolicyForUpdateSyscalls(object):
1260     """Names and directories for Linux headers.  update-syscalls variant."""
1261
1262     def __init__(self, glibc, headers_dir):
1263         self.arch = glibc.compiler.arch
1264         self.srcdir = glibc.compiler.ctx.component_srcdir('linux')
1265         self.builddir = glibc.ctx.component_builddir(
1266             'update-syscalls', glibc.name, 'build-linux')
1267         self.headers_dir = headers_dir
1268
1269 def install_linux_headers(policy, cmdlist):
1270     """Install Linux kernel headers."""
1271     arch_map = {'aarch64': 'arm64',
1272                 'alpha': 'alpha',
1273                 'arc': 'arc',
1274                 'arm': 'arm',
1275                 'csky': 'csky',
1276                 'hppa': 'parisc',
1277                 'i486': 'x86',
1278                 'i586': 'x86',
1279                 'i686': 'x86',
1280                 'i786': 'x86',
1281                 'ia64': 'ia64',
1282                 'loongarch64': 'loongarch',
1283                 'm68k': 'm68k',
1284                 'microblaze': 'microblaze',
1285                 'mips': 'mips',
1286                 'nios2': 'nios2',
1287                 'or1k': 'openrisc',
1288                 'powerpc': 'powerpc',
1289                 's390': 's390',
1290                 'riscv32': 'riscv',
1291                 'riscv64': 'riscv',
1292                 'sh': 'sh',
1293                 'sparc': 'sparc',
1294                 'x86_64': 'x86'}
1295     linux_arch = None
1296     for k in arch_map:
1297         if policy.arch.startswith(k):
1298             linux_arch = arch_map[k]
1299             break
1300     assert linux_arch is not None
1301     cmdlist.push_subdesc('linux')
1302     cmdlist.create_use_dir(policy.builddir)
1303     cmdlist.add_command('install-headers',
1304                         ['make', '-C', policy.srcdir, 'O=%s' % policy.builddir,
1305                          'ARCH=%s' % linux_arch,
1306                          'INSTALL_HDR_PATH=%s' % policy.headers_dir,
1307                          'headers_install'])
1308     cmdlist.cleanup_dir()
1309     cmdlist.pop_subdesc()
1310
1311 class Config(object):
1312     """A configuration for building a compiler and associated libraries."""
1313
1314     def __init__(self, ctx, arch, os_name, variant=None, gcc_cfg=None,
1315                  first_gcc_cfg=None, binutils_cfg=None, glibcs=None,
1316                  extra_glibcs=None):
1317         """Initialize a Config object."""
1318         self.ctx = ctx
1319         self.arch = arch
1320         self.os = os_name
1321         self.variant = variant
1322         if variant is None:
1323             self.name = '%s-%s' % (arch, os_name)
1324         else:
1325             self.name = '%s-%s-%s' % (arch, os_name, variant)
1326         self.triplet = '%s-glibc-%s' % (arch, os_name)
1327         if gcc_cfg is None:
1328             self.gcc_cfg = []
1329         else:
1330             self.gcc_cfg = gcc_cfg
1331         if first_gcc_cfg is None:
1332             self.first_gcc_cfg = []
1333         else:
1334             self.first_gcc_cfg = first_gcc_cfg
1335         if binutils_cfg is None:
1336             self.binutils_cfg = []
1337         else:
1338             self.binutils_cfg = binutils_cfg
1339         if glibcs is None:
1340             glibcs = [{'variant': variant}]
1341         if extra_glibcs is None:
1342             extra_glibcs = []
1343         glibcs = [Glibc(self, **g) for g in glibcs]
1344         extra_glibcs = [Glibc(self, **g) for g in extra_glibcs]
1345         self.all_glibcs = glibcs + extra_glibcs
1346         self.compiler_glibcs = glibcs
1347         self.installdir = ctx.compiler_installdir(self.name)
1348         self.bindir = ctx.compiler_bindir(self.name)
1349         self.sysroot = ctx.compiler_sysroot(self.name)
1350         self.builddir = os.path.join(ctx.builddir, 'compilers', self.name)
1351         self.logsdir = os.path.join(ctx.logsdir, 'compilers', self.name)
1352
1353     def component_builddir(self, component):
1354         """Return the directory to use for a (non-glibc) build."""
1355         return self.ctx.component_builddir('compilers', self.name, component)
1356
1357     def build(self):
1358         """Generate commands to build this compiler."""
1359         self.ctx.remove_recreate_dirs(self.installdir, self.builddir,
1360                                       self.logsdir)
1361         cmdlist = CommandList('compilers-%s' % self.name, self.ctx.keep)
1362         cmdlist.add_command('check-host-libraries',
1363                             ['test', '-f',
1364                              os.path.join(self.ctx.host_libraries_installdir,
1365                                           'ok')])
1366         cmdlist.use_path(self.bindir)
1367         self.build_cross_tool(cmdlist, 'binutils', 'binutils',
1368                               ['--disable-gdb',
1369                                '--disable-gdbserver',
1370                                '--disable-libdecnumber',
1371                                '--disable-readline',
1372                                '--disable-sim'] + self.binutils_cfg)
1373         if self.os.startswith('linux'):
1374             install_linux_headers(LinuxHeadersPolicyForBuild(self), cmdlist)
1375         self.build_gcc(cmdlist, True)
1376         if self.os == 'gnu':
1377             self.install_gnumach_headers(cmdlist)
1378             self.build_cross_tool(cmdlist, 'mig', 'mig')
1379             self.install_hurd_headers(cmdlist)
1380         for g in self.compiler_glibcs:
1381             cmdlist.push_subdesc('glibc')
1382             cmdlist.push_subdesc(g.name)
1383             g.build_glibc(cmdlist, GlibcPolicyForCompiler(g))
1384             cmdlist.pop_subdesc()
1385             cmdlist.pop_subdesc()
1386         self.build_gcc(cmdlist, False)
1387         cmdlist.add_command('done', ['touch',
1388                                      os.path.join(self.installdir, 'ok')])
1389         self.ctx.add_makefile_cmdlist('compilers-%s' % self.name, cmdlist,
1390                                       self.logsdir)
1391
1392     def build_cross_tool(self, cmdlist, tool_src, tool_build, extra_opts=None):
1393         """Build one cross tool."""
1394         srcdir = self.ctx.component_srcdir(tool_src)
1395         builddir = self.component_builddir(tool_build)
1396         cmdlist.push_subdesc(tool_build)
1397         cmdlist.create_use_dir(builddir)
1398         cfg_cmd = [os.path.join(srcdir, 'configure'),
1399                    '--prefix=%s' % self.installdir,
1400                    '--build=%s' % self.ctx.build_triplet,
1401                    '--host=%s' % self.ctx.build_triplet,
1402                    '--target=%s' % self.triplet,
1403                    '--with-sysroot=%s' % self.sysroot]
1404         if extra_opts:
1405             cfg_cmd.extend(extra_opts)
1406         cmdlist.add_command('configure', cfg_cmd)
1407         cmdlist.add_command('build', ['make'])
1408         # Parallel "make install" for GCC has race conditions that can
1409         # cause it to fail; see
1410         # <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42980>.  Such
1411         # problems are not known for binutils, but doing the
1412         # installation in parallel within a particular toolchain build
1413         # (as opposed to installation of one toolchain from
1414         # build-many-glibcs.py running in parallel to the installation
1415         # of other toolchains being built) is not known to be
1416         # significantly beneficial, so it is simplest just to disable
1417         # parallel install for cross tools here.
1418         cmdlist.add_command('install', ['make', '-j1', 'install'])
1419         cmdlist.cleanup_dir()
1420         cmdlist.pop_subdesc()
1421
1422     def install_gnumach_headers(self, cmdlist):
1423         """Install GNU Mach headers."""
1424         srcdir = self.ctx.component_srcdir('gnumach')
1425         builddir = self.component_builddir('gnumach')
1426         cmdlist.push_subdesc('gnumach')
1427         cmdlist.create_use_dir(builddir)
1428         cmdlist.add_command('configure',
1429                             [os.path.join(srcdir, 'configure'),
1430                              '--build=%s' % self.ctx.build_triplet,
1431                              '--host=%s' % self.triplet,
1432                              '--prefix=',
1433                              'CC=%s-gcc -nostdlib' % self.triplet])
1434         cmdlist.add_command('install', ['make', 'DESTDIR=%s' % self.sysroot,
1435                                         'install-data'])
1436         cmdlist.cleanup_dir()
1437         cmdlist.pop_subdesc()
1438
1439     def install_hurd_headers(self, cmdlist):
1440         """Install Hurd headers."""
1441         srcdir = self.ctx.component_srcdir('hurd')
1442         builddir = self.component_builddir('hurd')
1443         cmdlist.push_subdesc('hurd')
1444         cmdlist.create_use_dir(builddir)
1445         cmdlist.add_command('configure',
1446                             [os.path.join(srcdir, 'configure'),
1447                              '--build=%s' % self.ctx.build_triplet,
1448                              '--host=%s' % self.triplet,
1449                              '--prefix=',
1450                              '--disable-profile', '--without-parted',
1451                              'CC=%s-gcc -nostdlib' % self.triplet])
1452         cmdlist.add_command('install', ['make', 'prefix=%s' % self.sysroot,
1453                                         'no_deps=t', 'install-headers'])
1454         cmdlist.cleanup_dir()
1455         cmdlist.pop_subdesc()
1456
1457     def build_gcc(self, cmdlist, bootstrap):
1458         """Build GCC."""
1459         # libssp is of little relevance with glibc's own stack
1460         # checking support.  libcilkrts does not support GNU/Hurd (and
1461         # has been removed in GCC 8, so --disable-libcilkrts can be
1462         # removed once glibc no longer supports building with older
1463         # GCC versions).  --enable-initfini-array is enabled by default
1464         # in GCC 12, which can be removed when GCC 12 becomes the
1465         # minimum requirement.
1466         cfg_opts = list(self.gcc_cfg)
1467         cfg_opts += ['--enable-initfini-array']
1468         cfg_opts += ['--disable-libssp', '--disable-libcilkrts']
1469         host_libs = self.ctx.host_libraries_installdir
1470         cfg_opts += ['--with-gmp=%s' % host_libs,
1471                      '--with-mpfr=%s' % host_libs,
1472                      '--with-mpc=%s' % host_libs]
1473         if bootstrap:
1474             tool_build = 'gcc-first'
1475             # Building a static-only, C-only compiler that is
1476             # sufficient to build glibc.  Various libraries and
1477             # features that may require libc headers must be disabled.
1478             # When configuring with a sysroot, --with-newlib is
1479             # required to define inhibit_libc (to stop some parts of
1480             # libgcc including libc headers); --without-headers is not
1481             # sufficient.
1482             cfg_opts += ['--enable-languages=c', '--disable-shared',
1483                          '--disable-threads',
1484                          '--disable-libatomic',
1485                          '--disable-decimal-float',
1486                          '--disable-libffi',
1487                          '--disable-libgomp',
1488                          '--disable-libitm',
1489                          '--disable-libmpx',
1490                          '--disable-libquadmath',
1491                          '--disable-libsanitizer',
1492                          '--without-headers', '--with-newlib',
1493                          '--with-glibc-version=%s' % self.ctx.glibc_version
1494                          ]
1495             cfg_opts += self.first_gcc_cfg
1496         else:
1497             tool_build = 'gcc'
1498             # libsanitizer commonly breaks because of glibc header
1499             # changes, or on unusual targets.  C++ pre-compiled
1500             # headers are not used during the glibc build and are
1501             # expensive to create.
1502             if not self.ctx.full_gcc:
1503                 cfg_opts += ['--disable-libsanitizer',
1504                              '--disable-libstdcxx-pch']
1505             langs = 'all' if self.ctx.full_gcc else 'c,c++'
1506             cfg_opts += ['--enable-languages=%s' % langs,
1507                          '--enable-shared', '--enable-threads']
1508         self.build_cross_tool(cmdlist, 'gcc', tool_build, cfg_opts)
1509
1510 class GlibcPolicyDefault(object):
1511     """Build policy for glibc: common defaults."""
1512
1513     def __init__(self, glibc):
1514         self.srcdir = glibc.ctx.component_srcdir('glibc')
1515         self.use_usr = glibc.os != 'gnu'
1516         self.prefix = '/usr' if self.use_usr else ''
1517         self.configure_args = [
1518             '--prefix=%s' % self.prefix,
1519             '--enable-profile',
1520             '--build=%s' % glibc.ctx.build_triplet,
1521             '--host=%s' % glibc.triplet,
1522             'CC=%s' % glibc.tool_name('gcc'),
1523             'CXX=%s' % glibc.tool_name('g++'),
1524         ]
1525         if glibc.os == 'gnu':
1526             self.configure_args.append('MIG=%s' % glibc.tool_name('mig'))
1527         if glibc.cflags:
1528             self.configure_args.append('CFLAGS=%s' % glibc.cflags)
1529             self.configure_args.append('CXXFLAGS=%s' % glibc.cflags)
1530         self.configure_args += glibc.cfg
1531
1532     def configure(self, cmdlist):
1533         """Invoked to add the configure command to the command list."""
1534         cmdlist.add_command('configure',
1535                             [os.path.join(self.srcdir, 'configure'),
1536                              *self.configure_args])
1537
1538     def extra_commands(self, cmdlist):
1539         """Invoked to inject additional commands (make check) after build."""
1540         pass
1541
1542 class GlibcPolicyForCompiler(GlibcPolicyDefault):
1543     """Build policy for glibc during the compilers stage."""
1544
1545     def __init__(self, glibc):
1546         super().__init__(glibc)
1547         self.builddir = glibc.ctx.component_builddir(
1548             'compilers', glibc.compiler.name, 'glibc', glibc.name)
1549         self.installdir = glibc.compiler.sysroot
1550
1551 class GlibcPolicyForBuild(GlibcPolicyDefault):
1552     """Build policy for glibc during the glibcs stage."""
1553
1554     def __init__(self, glibc):
1555         super().__init__(glibc)
1556         self.builddir = glibc.ctx.component_builddir(
1557             'glibcs', glibc.name, 'glibc')
1558         self.installdir = glibc.ctx.glibc_installdir(glibc.name)
1559         if glibc.ctx.strip:
1560             self.strip = glibc.tool_name('strip')
1561         else:
1562             self.strip = None
1563         self.save_logs = glibc.ctx.save_logs
1564
1565     def extra_commands(self, cmdlist):
1566         if self.strip:
1567             # Avoid stripping libc.so and libpthread.so, which are
1568             # linker scripts stored in /lib on Hurd.
1569             find_command = 'find %s/lib* -name "*.so*"' % self.installdir
1570             cmdlist.add_command('strip', ['sh', '-c', (
1571                 'set -e; for f in $(%s); do '
1572                 'if ! head -c16 $f | grep -q "GNU ld script"; then %s $f; fi; '
1573                 'done' % (find_command, self.strip))])
1574         cmdlist.add_command('check', ['make', 'check'])
1575         cmdlist.add_command('save-logs', [self.save_logs], always_run=True)
1576
1577 class GlibcPolicyForUpdateSyscalls(GlibcPolicyDefault):
1578     """Build policy for glibc during update-syscalls."""
1579
1580     def __init__(self, glibc):
1581         super().__init__(glibc)
1582         self.builddir = glibc.ctx.component_builddir(
1583             'update-syscalls', glibc.name, 'glibc')
1584         self.linuxdir = glibc.ctx.component_builddir(
1585             'update-syscalls', glibc.name, 'linux')
1586         self.linux_policy = LinuxHeadersPolicyForUpdateSyscalls(
1587             glibc, self.linuxdir)
1588         self.configure_args.insert(
1589             0, '--with-headers=%s' % os.path.join(self.linuxdir, 'include'))
1590         # self.installdir not set because installation is not supported
1591
1592 class Glibc(object):
1593     """A configuration for building glibc."""
1594
1595     def __init__(self, compiler, arch=None, os_name=None, variant=None,
1596                  cfg=None, ccopts=None, cflags=None):
1597         """Initialize a Glibc object."""
1598         self.ctx = compiler.ctx
1599         self.compiler = compiler
1600         if arch is None:
1601             self.arch = compiler.arch
1602         else:
1603             self.arch = arch
1604         if os_name is None:
1605             self.os = compiler.os
1606         else:
1607             self.os = os_name
1608         self.variant = variant
1609         if variant is None:
1610             self.name = '%s-%s' % (self.arch, self.os)
1611         else:
1612             self.name = '%s-%s-%s' % (self.arch, self.os, variant)
1613         self.triplet = '%s-glibc-%s' % (self.arch, self.os)
1614         if cfg is None:
1615             self.cfg = []
1616         else:
1617             self.cfg = cfg
1618         # ccopts contain ABI options and are passed to configure as CC / CXX.
1619         self.ccopts = ccopts
1620         # cflags contain non-ABI options like -g or -O and are passed to
1621         # configure as CFLAGS / CXXFLAGS.
1622         self.cflags = cflags
1623
1624     def tool_name(self, tool):
1625         """Return the name of a cross-compilation tool."""
1626         ctool = '%s-%s' % (self.compiler.triplet, tool)
1627         if self.ccopts and (tool == 'gcc' or tool == 'g++'):
1628             ctool = '%s %s' % (ctool, self.ccopts)
1629         return ctool
1630
1631     def build(self):
1632         """Generate commands to build this glibc."""
1633         builddir = self.ctx.component_builddir('glibcs', self.name, 'glibc')
1634         installdir = self.ctx.glibc_installdir(self.name)
1635         logsdir = os.path.join(self.ctx.logsdir, 'glibcs', self.name)
1636         self.ctx.remove_recreate_dirs(installdir, builddir, logsdir)
1637         cmdlist = CommandList('glibcs-%s' % self.name, self.ctx.keep)
1638         cmdlist.add_command('check-compilers',
1639                             ['test', '-f',
1640                              os.path.join(self.compiler.installdir, 'ok')])
1641         cmdlist.use_path(self.compiler.bindir)
1642         self.build_glibc(cmdlist, GlibcPolicyForBuild(self))
1643         self.ctx.add_makefile_cmdlist('glibcs-%s' % self.name, cmdlist,
1644                                       logsdir)
1645
1646     def build_glibc(self, cmdlist, policy):
1647         """Generate commands to build this glibc, either as part of a compiler
1648         build or with the bootstrapped compiler (and in the latter case, run
1649         tests as well)."""
1650         cmdlist.create_use_dir(policy.builddir)
1651         policy.configure(cmdlist)
1652         cmdlist.add_command('build', ['make'])
1653         cmdlist.add_command('install', ['make', 'install',
1654                                         'install_root=%s' % policy.installdir])
1655         # GCC uses paths such as lib/../lib64, so make sure lib
1656         # directories always exist.
1657         mkdir_cmd = ['mkdir', '-p',
1658                      os.path.join(policy.installdir, 'lib')]
1659         if policy.use_usr:
1660             mkdir_cmd += [os.path.join(policy.installdir, 'usr', 'lib')]
1661         cmdlist.add_command('mkdir-lib', mkdir_cmd)
1662         policy.extra_commands(cmdlist)
1663         cmdlist.cleanup_dir()
1664
1665     def update_syscalls(self):
1666         if self.os == 'gnu':
1667             # Hurd does not have system call tables that need updating.
1668             return
1669
1670         policy = GlibcPolicyForUpdateSyscalls(self)
1671         logsdir = os.path.join(self.ctx.logsdir, 'update-syscalls', self.name)
1672         self.ctx.remove_recreate_dirs(policy.builddir, logsdir)
1673         cmdlist = CommandList('update-syscalls-%s' % self.name, self.ctx.keep)
1674         cmdlist.add_command('check-compilers',
1675                             ['test', '-f',
1676                              os.path.join(self.compiler.installdir, 'ok')])
1677         cmdlist.use_path(self.compiler.bindir)
1678
1679         install_linux_headers(policy.linux_policy, cmdlist)
1680
1681         cmdlist.create_use_dir(policy.builddir)
1682         policy.configure(cmdlist)
1683         cmdlist.add_command('build', ['make', 'update-syscall-lists'])
1684         cmdlist.cleanup_dir()
1685         self.ctx.add_makefile_cmdlist('update-syscalls-%s' % self.name,
1686                                       cmdlist, logsdir)
1687
1688 class Command(object):
1689     """A command run in the build process."""
1690
1691     def __init__(self, desc, num, dir, path, command, always_run=False):
1692         """Initialize a Command object."""
1693         self.dir = dir
1694         self.path = path
1695         self.desc = desc
1696         trans = str.maketrans({' ': '-'})
1697         self.logbase = '%03d-%s' % (num, desc.translate(trans))
1698         self.command = command
1699         self.always_run = always_run
1700
1701     @staticmethod
1702     def shell_make_quote_string(s):
1703         """Given a string not containing a newline, quote it for use by the
1704         shell and make."""
1705         assert '\n' not in s
1706         if re.fullmatch('[]+,./0-9@A-Z_a-z-]+', s):
1707             return s
1708         strans = str.maketrans({"'": "'\\''"})
1709         s = "'%s'" % s.translate(strans)
1710         mtrans = str.maketrans({'$': '$$'})
1711         return s.translate(mtrans)
1712
1713     @staticmethod
1714     def shell_make_quote_list(l, translate_make):
1715         """Given a list of strings not containing newlines, quote them for use
1716         by the shell and make, returning a single string.  If translate_make
1717         is true and the first string is 'make', change it to $(MAKE)."""
1718         l = [Command.shell_make_quote_string(s) for s in l]
1719         if translate_make and l[0] == 'make':
1720             l[0] = '$(MAKE)'
1721         return ' '.join(l)
1722
1723     def shell_make_quote(self):
1724         """Return this command quoted for the shell and make."""
1725         return self.shell_make_quote_list(self.command, True)
1726
1727
1728 class CommandList(object):
1729     """A list of commands run in the build process."""
1730
1731     def __init__(self, desc, keep):
1732         """Initialize a CommandList object."""
1733         self.cmdlist = []
1734         self.dir = None
1735         self.path = None
1736         self.desc = [desc]
1737         self.keep = keep
1738
1739     def desc_txt(self, desc):
1740         """Return the description to use for a command."""
1741         return '%s %s' % (' '.join(self.desc), desc)
1742
1743     def use_dir(self, dir):
1744         """Set the default directory for subsequent commands."""
1745         self.dir = dir
1746
1747     def use_path(self, path):
1748         """Set a directory to be prepended to the PATH for subsequent
1749         commands."""
1750         self.path = path
1751
1752     def push_subdesc(self, subdesc):
1753         """Set the default subdescription for subsequent commands (e.g., the
1754         name of a component being built, within the series of commands
1755         building it)."""
1756         self.desc.append(subdesc)
1757
1758     def pop_subdesc(self):
1759         """Pop a subdescription from the list of descriptions."""
1760         self.desc.pop()
1761
1762     def create_use_dir(self, dir):
1763         """Remove and recreate a directory and use it for subsequent
1764         commands."""
1765         self.add_command_dir('rm', None, ['rm', '-rf', dir])
1766         self.add_command_dir('mkdir', None, ['mkdir', '-p', dir])
1767         self.use_dir(dir)
1768
1769     def add_command_dir(self, desc, dir, command, always_run=False):
1770         """Add a command to run in a given directory."""
1771         cmd = Command(self.desc_txt(desc), len(self.cmdlist), dir, self.path,
1772                       command, always_run)
1773         self.cmdlist.append(cmd)
1774
1775     def add_command(self, desc, command, always_run=False):
1776         """Add a command to run in the default directory."""
1777         cmd = Command(self.desc_txt(desc), len(self.cmdlist), self.dir,
1778                       self.path, command, always_run)
1779         self.cmdlist.append(cmd)
1780
1781     def cleanup_dir(self, desc='cleanup', dir=None):
1782         """Clean up a build directory.  If no directory is specified, the
1783         default directory is cleaned up and ceases to be the default
1784         directory."""
1785         if dir is None:
1786             dir = self.dir
1787             self.use_dir(None)
1788         if self.keep != 'all':
1789             self.add_command_dir(desc, None, ['rm', '-rf', dir],
1790                                  always_run=(self.keep == 'none'))
1791
1792     def makefile_commands(self, wrapper, logsdir):
1793         """Return the sequence of commands in the form of text for a Makefile.
1794         The given wrapper script takes arguments: base of logs for
1795         previous command, or empty; base of logs for this command;
1796         description; directory; PATH addition; the command itself."""
1797         # prev_base is the base of the name for logs of the previous
1798         # command that is not always-run (that is, a build command,
1799         # whose failure should stop subsequent build commands from
1800         # being run, as opposed to a cleanup command, which is run
1801         # even if previous commands failed).
1802         prev_base = ''
1803         cmds = []
1804         for c in self.cmdlist:
1805             ctxt = c.shell_make_quote()
1806             if prev_base and not c.always_run:
1807                 prev_log = os.path.join(logsdir, prev_base)
1808             else:
1809                 prev_log = ''
1810             this_log = os.path.join(logsdir, c.logbase)
1811             if not c.always_run:
1812                 prev_base = c.logbase
1813             if c.dir is None:
1814                 dir = ''
1815             else:
1816                 dir = c.dir
1817             if c.path is None:
1818                 path = ''
1819             else:
1820                 path = c.path
1821             prelims = [wrapper, prev_log, this_log, c.desc, dir, path]
1822             prelim_txt = Command.shell_make_quote_list(prelims, False)
1823             cmds.append('\t@%s %s' % (prelim_txt, ctxt))
1824         return '\n'.join(cmds)
1825
1826     def status_logs(self, logsdir):
1827         """Return the list of log files with command status."""
1828         return [os.path.join(logsdir, '%s-status.txt' % c.logbase)
1829                 for c in self.cmdlist]
1830
1831
1832 def get_parser():
1833     """Return an argument parser for this module."""
1834     parser = argparse.ArgumentParser(description=__doc__)
1835     parser.add_argument('-j', dest='parallelism',
1836                         help='Run this number of jobs in parallel',
1837                         type=int, default=os.cpu_count())
1838     parser.add_argument('--keep', dest='keep',
1839                         help='Whether to keep all build directories, '
1840                         'none or only those from failed builds',
1841                         default='none', choices=('none', 'all', 'failed'))
1842     parser.add_argument('--replace-sources', action='store_true',
1843                         help='Remove and replace source directories '
1844                         'with the wrong version of a component')
1845     parser.add_argument('--strip', action='store_true',
1846                         help='Strip installed glibc libraries')
1847     parser.add_argument('--full-gcc', action='store_true',
1848                         help='Build GCC with all languages and libsanitizer')
1849     parser.add_argument('--shallow', action='store_true',
1850                         help='Do not download Git history during checkout')
1851     parser.add_argument('topdir',
1852                         help='Toplevel working directory')
1853     parser.add_argument('action',
1854                         help='What to do',
1855                         choices=('checkout', 'bot-cycle', 'bot',
1856                                  'host-libraries', 'compilers', 'glibcs',
1857                                  'update-syscalls', 'list-compilers',
1858                                  'list-glibcs'))
1859     parser.add_argument('configs',
1860                         help='Versions to check out or configurations to build',
1861                         nargs='*')
1862     return parser
1863
1864
1865 def main(argv):
1866     """The main entry point."""
1867     parser = get_parser()
1868     opts = parser.parse_args(argv)
1869     topdir = os.path.abspath(opts.topdir)
1870     ctx = Context(topdir, opts.parallelism, opts.keep, opts.replace_sources,
1871                   opts.strip, opts.full_gcc, opts.action,
1872                   shallow=opts.shallow)
1873     ctx.run_builds(opts.action, opts.configs)
1874
1875
1876 if __name__ == '__main__':
1877     main(sys.argv[1:])