configure.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2001 Google Inc. All Rights Reserved.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 """Script that generates the build.ninja for ninja itself.
  18
  19 Projects that use ninja themselves should either write a similar script
  20 or use a meta-build system that supports Ninja output."""
  21
  22 from __future__ import print_function
  23
  24 from optparse import OptionParser
  25 import os
  26 import pipes
  27 import string
  28 import subprocess
  29 import sys
  30
  31 sourcedir = os.path.dirname(os.path.realpath(__file__))
  32 sys.path.insert(0, os.path.join(sourcedir, 'misc'))
  33 import ninja_syntax
  34
  35
  36 class Platform(object):
  37     """Represents a host/target platform and its specific build attributes."""
  38     def __init__(self, platform):
  39         self._platform = platform
  40         if self._platform is not None:
  41             return
  42         self._platform = sys.platform
  43         if self._platform.startswith('linux'):
  44             self._platform = 'linux'
  45         elif self._platform.startswith('freebsd'):
  46             self._platform = 'freebsd'
  47         elif self._platform.startswith('gnukfreebsd'):
  48             self._platform = 'freebsd'
  49         elif self._platform.startswith('openbsd'):
  50             self._platform = 'openbsd'
  51         elif self._platform.startswith('solaris') or self._platform == 'sunos5':
  52             self._platform = 'solaris'
  53         elif self._platform.startswith('mingw'):
  54             self._platform = 'mingw'
  55         elif self._platform.startswith('win'):
  56             self._platform = 'msvc'
  57         elif self._platform.startswith('bitrig'):
  58             self._platform = 'bitrig'
  59         elif self._platform.startswith('netbsd'):
  60             self._platform = 'netbsd'
  61         elif self._platform.startswith('aix'):
  62             self._platform = 'aix'
  63         elif self._platform.startswith('os400'):
  64             self._platform = 'os400'
  65         elif self._platform.startswith('dragonfly'):
  66             self._platform = 'dragonfly'
  67
  68     @staticmethod
  69     def known_platforms():
  70       return ['linux', 'darwin', 'freebsd', 'openbsd', 'solaris', 'sunos5',
  71               'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd', 'aix',
  72               'dragonfly']
  73
  74     def platform(self):
  75         return self._platform
  76
  77     def is_linux(self):
  78         return self._platform == 'linux'
  79
  80     def is_mingw(self):
  81         return self._platform == 'mingw'
  82
  83     def is_msvc(self):
  84         return self._platform == 'msvc'
  85
  86     def msvc_needs_fs(self):
  87         popen = subprocess.Popen(['cl', '/nologo', '/help'],
  88                                  stdout=subprocess.PIPE,
  89                                  stderr=subprocess.PIPE)
  90         out, err = popen.communicate()
  91         return b'/FS' in out
  92
  93     def is_windows(self):
  94         return self.is_mingw() or self.is_msvc()
  95
  96     def is_solaris(self):
  97         return self._platform == 'solaris'
  98
  99     def is_aix(self):
 100         return self._platform == 'aix'
 101
 102     def is_os400_pase(self):
 103         return self._platform == 'os400' or os.uname().sysname.startswith('OS400')
 104
 105     def uses_usr_local(self):
 106         return self._platform in ('freebsd', 'openbsd', 'bitrig', 'dragonfly', 'netbsd')
 107
 108     def supports_ppoll(self):
 109         return self._platform in ('freebsd', 'linux', 'openbsd', 'bitrig',
 110                                   'dragonfly')
 111
 112     def supports_ninja_browse(self):
 113         return (not self.is_windows()
 114                 and not self.is_solaris()
 115                 and not self.is_aix())
 116
 117     def can_rebuild_in_place(self):
 118         return not (self.is_windows() or self.is_aix())
 119
 120 class Bootstrap:
 121     """API shim for ninja_syntax.Writer that instead runs the commands.
 122
 123     Used to bootstrap Ninja from scratch.  In --bootstrap mode this
 124     class is used to execute all the commands to build an executable.
 125     It also proxies all calls to an underlying ninja_syntax.Writer, to
 126     behave like non-bootstrap mode.
 127     """
 128     def __init__(self, writer, verbose=False):
 129         self.writer = writer
 130         self.verbose = verbose
 131         # Map of variable name => expanded variable value.
 132         self.vars = {}
 133         # Map of rule name => dict of rule attributes.
 134         self.rules = {
 135             'phony': {}
 136         }
 137
 138     def comment(self, text):
 139         return self.writer.comment(text)
 140
 141     def newline(self):
 142         return self.writer.newline()
 143
 144     def variable(self, key, val):
 145         # In bootstrap mode, we have no ninja process to catch /showIncludes
 146         # output.
 147         self.vars[key] = self._expand(val).replace('/showIncludes', '')
 148         return self.writer.variable(key, val)
 149
 150     def rule(self, name, **kwargs):
 151         self.rules[name] = kwargs
 152         return self.writer.rule(name, **kwargs)
 153
 154     def build(self, outputs, rule, inputs=None, **kwargs):
 155         ruleattr = self.rules[rule]
 156         cmd = ruleattr.get('command')
 157         if cmd is None:  # A phony rule, for example.
 158             return
 159
 160         # Implement just enough of Ninja variable expansion etc. to
 161         # make the bootstrap build work.
 162         local_vars = {
 163             'in': self._expand_paths(inputs),
 164             'out': self._expand_paths(outputs)
 165         }
 166         for key, val in kwargs.get('variables', []):
 167             local_vars[key] = ' '.join(ninja_syntax.as_list(val))
 168
 169         self._run_command(self._expand(cmd, local_vars))
 170
 171         return self.writer.build(outputs, rule, inputs, **kwargs)
 172
 173     def default(self, paths):
 174         return self.writer.default(paths)
 175
 176     def _expand_paths(self, paths):
 177         """Expand $vars in an array of paths, e.g. from a 'build' block."""
 178         paths = ninja_syntax.as_list(paths)
 179         return ' '.join(map(self._shell_escape, (map(self._expand, paths))))
 180
 181     def _expand(self, str, local_vars={}):
 182         """Expand $vars in a string."""
 183         return ninja_syntax.expand(str, self.vars, local_vars)
 184
 185     def _shell_escape(self, path):
 186         """Quote paths containing spaces."""
 187         return '"%s"' % path if ' ' in path else path
 188
 189     def _run_command(self, cmdline):
 190         """Run a subcommand, quietly.  Prints the full command on error."""
 191         try:
 192             if self.verbose:
 193                 print(cmdline)
 194             subprocess.check_call(cmdline, shell=True)
 195         except subprocess.CalledProcessError:
 196             print('when running: ', cmdline)
 197             raise
 198
 199
 200 parser = OptionParser()
 201 profilers = ['gmon', 'pprof']
 202 parser.add_option('--bootstrap', action='store_true',
 203                   help='bootstrap a ninja binary from nothing')
 204 parser.add_option('--verbose', action='store_true',
 205                   help='enable verbose build')
 206 parser.add_option('--platform',
 207                   help='target platform (' +
 208                        '/'.join(Platform.known_platforms()) + ')',
 209                   choices=Platform.known_platforms())
 210 parser.add_option('--host',
 211                   help='host platform (' +
 212                        '/'.join(Platform.known_platforms()) + ')',
 213                   choices=Platform.known_platforms())
 214 parser.add_option('--debug', action='store_true',
 215                   help='enable debugging extras',)
 216 parser.add_option('--profile', metavar='TYPE',
 217                   choices=profilers,
 218                   help='enable profiling (' + '/'.join(profilers) + ')',)
 219 parser.add_option('--with-gtest', metavar='PATH', help='ignored')
 220 parser.add_option('--with-python', metavar='EXE',
 221                   help='use EXE as the Python interpreter',
 222                   default=os.path.basename(sys.executable))
 223 parser.add_option('--force-pselect', action='store_true',
 224                   help='ppoll() is used by default where available, '
 225                        'but some platforms may need to use pselect instead',)
 226 (options, args) = parser.parse_args()
 227 if args:
 228     print('ERROR: extra unparsed command-line arguments:', args)
 229     sys.exit(1)
 230
 231 platform = Platform(options.platform)
 232 if options.host:
 233     host = Platform(options.host)
 234 else:
 235     host = platform
 236
 237 BUILD_FILENAME = 'build.ninja'
 238 ninja_writer = ninja_syntax.Writer(open(BUILD_FILENAME, 'w'))
 239 n = ninja_writer
 240
 241 if options.bootstrap:
 242     # Make the build directory.
 243     try:
 244         os.mkdir('build')
 245     except OSError:
 246         pass
 247     # Wrap ninja_writer with the Bootstrapper, which also executes the
 248     # commands.
 249     print('bootstrapping ninja...')
 250     n = Bootstrap(n, verbose=options.verbose)
 251
 252 n.comment('This file is used to build ninja itself.')
 253 n.comment('It is generated by ' + os.path.basename(__file__) + '.')
 254 n.newline()
 255
 256 n.variable('ninja_required_version', '1.3')
 257 n.newline()
 258
 259 n.comment('The arguments passed to configure.py, for rerunning it.')
 260 configure_args = sys.argv[1:]
 261 if '--bootstrap' in configure_args:
 262     configure_args.remove('--bootstrap')
 263 n.variable('configure_args', ' '.join(configure_args))
 264 env_keys = set(['CXX', 'AR', 'CFLAGS', 'CXXFLAGS', 'LDFLAGS'])
 265 configure_env = dict((k, os.environ[k]) for k in os.environ if k in env_keys)
 266 if configure_env:
 267     config_str = ' '.join([k + '=' + pipes.quote(configure_env[k])
 268                            for k in configure_env])
 269     n.variable('configure_env', config_str + '$ ')
 270 n.newline()
 271
 272 CXX = configure_env.get('CXX', 'c++')
 273 objext = '.o'
 274 if platform.is_msvc():
 275     CXX = 'cl'
 276     objext = '.obj'
 277
 278 def src(filename):
 279     return os.path.join('$root', 'src', filename)
 280 def built(filename):
 281     return os.path.join('$builddir', filename)
 282 def doc(filename):
 283     return os.path.join('$root', 'doc', filename)
 284 def cc(name, **kwargs):
 285     return n.build(built(name + objext), 'cxx', src(name + '.c'), **kwargs)
 286 def cxx(name, **kwargs):
 287     return n.build(built(name + objext), 'cxx', src(name + '.cc'), **kwargs)
 288 def binary(name):
 289     if platform.is_windows():
 290         exe = name + '.exe'
 291         n.build(name, 'phony', exe)
 292         return exe
 293     return name
 294
 295 root = sourcedir
 296 if root == os.getcwd():
 297     # In the common case where we're building directly in the source
 298     # tree, simplify all the paths to just be cwd-relative.
 299     root = '.'
 300 n.variable('root', root)
 301 n.variable('builddir', 'build')
 302 n.variable('cxx', CXX)
 303 if platform.is_msvc():
 304     n.variable('ar', 'link')
 305 else:
 306     n.variable('ar', configure_env.get('AR', 'ar'))
 307
 308 if platform.is_msvc():
 309     cflags = ['/showIncludes',
 310               '/nologo',  # Don't print startup banner.
 311               '/Zi',  # Create pdb with debug info.
 312               '/W4',  # Highest warning level.
 313               '/WX',  # Warnings as errors.
 314               '/wd4530', '/wd4100', '/wd4706', '/wd4244',
 315               '/wd4512', '/wd4800', '/wd4702', '/wd4819',
 316               # Disable warnings about constant conditional expressions.
 317               '/wd4127',
 318               # Disable warnings about passing "this" during initialization.
 319               '/wd4355',
 320               # Disable warnings about ignored typedef in DbgHelp.h
 321               '/wd4091',
 322               '/GR-',  # Disable RTTI.
 323               # Disable size_t -> int truncation warning.
 324               # We never have strings or arrays larger than 2**31.
 325               '/wd4267',
 326               '/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
 327               '/D_HAS_EXCEPTIONS=0',
 328               '/DNINJA_PYTHON="%s"' % options.with_python]
 329     if platform.msvc_needs_fs():
 330         cflags.append('/FS')
 331     ldflags = ['/DEBUG', '/libpath:$builddir']
 332     if not options.debug:
 333         cflags += ['/Ox', '/DNDEBUG', '/GL']
 334         ldflags += ['/LTCG', '/OPT:REF', '/OPT:ICF']
 335 else:
 336     cflags = ['-g', '-Wall', '-Wextra',
 337               '-Wno-deprecated',
 338               '-Wno-missing-field-initializers',
 339               '-Wno-unused-parameter',
 340               '-fno-rtti',
 341               '-fno-exceptions',
 342               '-fvisibility=hidden', '-pipe',
 343               '-DNINJA_PYTHON="%s"' % options.with_python]
 344     if options.debug:
 345         cflags += ['-D_GLIBCXX_DEBUG', '-D_GLIBCXX_DEBUG_PEDANTIC']
 346         cflags.remove('-fno-rtti')  # Needed for above pedanticness.
 347     else:
 348         cflags += ['-O2', '-DNDEBUG']
 349     try:
 350         proc = subprocess.Popen(
 351             [CXX, '-fdiagnostics-color', '-c', '-x', 'c++', '/dev/null',
 352              '-o', '/dev/null'],
 353             stdout=open(os.devnull, 'wb'), stderr=subprocess.STDOUT)
 354         if proc.wait() == 0:
 355             cflags += ['-fdiagnostics-color']
 356     except:
 357         pass
 358     if platform.is_mingw():
 359         cflags += ['-D_WIN32_WINNT=0x0601', '-D__USE_MINGW_ANSI_STDIO=1']
 360     ldflags = ['-L$builddir']
 361     if platform.uses_usr_local():
 362         cflags.append('-I/usr/local/include')
 363         ldflags.append('-L/usr/local/lib')
 364     if platform.is_aix():
 365         # printf formats for int64_t, uint64_t; large file support
 366         cflags.append('-D__STDC_FORMAT_MACROS')
 367         cflags.append('-D_LARGE_FILES')
 368
 369
 370 libs = []
 371
 372 if platform.is_mingw():
 373     cflags.remove('-fvisibility=hidden');
 374     ldflags.append('-static')
 375 elif platform.is_solaris():
 376     cflags.remove('-fvisibility=hidden')
 377 elif platform.is_aix():
 378     cflags.remove('-fvisibility=hidden')
 379 elif platform.is_msvc():
 380     pass
 381 else:
 382     if options.profile == 'gmon':
 383         cflags.append('-pg')
 384         ldflags.append('-pg')
 385     elif options.profile == 'pprof':
 386         cflags.append('-fno-omit-frame-pointer')
 387         libs.extend(['-Wl,--no-as-needed', '-lprofiler'])
 388
 389 if platform.supports_ppoll() and not options.force_pselect:
 390     cflags.append('-DUSE_PPOLL')
 391 if platform.supports_ninja_browse():
 392     cflags.append('-DNINJA_HAVE_BROWSE')
 393
 394 # Search for generated headers relative to build dir.
 395 cflags.append('-I.')
 396
 397 def shell_escape(str):
 398     """Escape str such that it's interpreted as a single argument by
 399     the shell."""
 400
 401     # This isn't complete, but it's just enough to make NINJA_PYTHON work.
 402     if platform.is_windows():
 403       return str
 404     if '"' in str:
 405         return "'%s'" % str.replace("'", "\\'")
 406     return str
 407
 408 if 'CFLAGS' in configure_env:
 409     cflags.append(configure_env['CFLAGS'])
 410     ldflags.append(configure_env['CFLAGS'])
 411 if 'CXXFLAGS' in configure_env:
 412     cflags.append(configure_env['CXXFLAGS'])
 413     ldflags.append(configure_env['CXXFLAGS'])
 414 n.variable('cflags', ' '.join(shell_escape(flag) for flag in cflags))
 415 if 'LDFLAGS' in configure_env:
 416     ldflags.append(configure_env['LDFLAGS'])
 417 n.variable('ldflags', ' '.join(shell_escape(flag) for flag in ldflags))
 418 n.newline()
 419
 420 if platform.is_msvc():
 421     n.rule('cxx',
 422         command='$cxx $cflags -c $in /Fo$out /Fd' + built('$pdb'),
 423         description='CXX $out',
 424         deps='msvc'  # /showIncludes is included in $cflags.
 425     )
 426 else:
 427     n.rule('cxx',
 428         command='$cxx -MMD -MT $out -MF $out.d $cflags -c $in -o $out',
 429         depfile='$out.d',
 430         deps='gcc',
 431         description='CXX $out')
 432 n.newline()
 433
 434 if host.is_msvc():
 435     n.rule('ar',
 436            command='lib /nologo /ltcg /out:$out $in',
 437            description='LIB $out')
 438 elif host.is_mingw():
 439     n.rule('ar',
 440            command='$ar crs $out $in',
 441            description='AR $out')
 442 else:
 443     n.rule('ar',
 444            command='rm -f $out && $ar crs $out $in',
 445            description='AR $out')
 446 n.newline()
 447
 448 if platform.is_msvc():
 449     n.rule('link',
 450         command='$cxx $in $libs /nologo /link $ldflags /out:$out',
 451         description='LINK $out')
 452 else:
 453     n.rule('link',
 454         command='$cxx $ldflags -o $out $in $libs',
 455         description='LINK $out')
 456 n.newline()
 457
 458 objs = []
 459
 460 if platform.supports_ninja_browse():
 461     n.comment('browse_py.h is used to inline browse.py.')
 462     n.rule('inline',
 463            command='"%s"' % src('inline.sh') + ' $varname < $in > $out',
 464            description='INLINE $out')
 465     n.build(built('browse_py.h'), 'inline', src('browse.py'),
 466             implicit=src('inline.sh'),
 467             variables=[('varname', 'kBrowsePy')])
 468     n.newline()
 469
 470     objs += cxx('browse', order_only=built('browse_py.h'))
 471     n.newline()
 472
 473 n.comment('the depfile parser and ninja lexers are generated using re2c.')
 474 def has_re2c():
 475     try:
 476         proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
 477         return int(proc.communicate()[0], 10) >= 1103
 478     except OSError:
 479         return False
 480 if has_re2c():
 481     n.rule('re2c',
 482            command='re2c -b -i --no-generation-date --no-version -o $out $in',
 483            description='RE2C $out')
 484     # Generate the .cc files in the source directory so we can check them in.
 485     n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
 486     n.build(src('lexer.cc'), 're2c', src('lexer.in.cc'))
 487 else:
 488     print("warning: A compatible version of re2c (>= 0.11.3) was not found; "
 489            "changes to src/*.in.cc will not affect your build.")
 490 n.newline()
 491
 492 n.comment('Core source files all build into ninja library.')
 493 cxxvariables = []
 494 if platform.is_msvc():
 495     cxxvariables = [('pdb', 'ninja.pdb')]
 496 for name in ['build',
 497              'build_log',
 498              'clean',
 499              'clparser',
 500              'debug_flags',
 501              'depfile_parser',
 502              'deps_log',
 503              'disk_interface',
 504              'dyndep',
 505              'dyndep_parser',
 506              'edit_distance',
 507              'eval_env',
 508              'graph',
 509              'graphviz',
 510              'json',
 511              'lexer',
 512              'line_printer',
 513              'manifest_parser',
 514              'metrics',
 515              'missing_deps',
 516              'parser',
 517              'state',
 518              'status',
 519              'string_piece_util',
 520              'util',
 521              'version']:
 522     objs += cxx(name, variables=cxxvariables)
 523 if platform.is_windows():
 524     for name in ['subprocess-win32',
 525                  'includes_normalize-win32',
 526                  'msvc_helper-win32',
 527                  'msvc_helper_main-win32']:
 528         objs += cxx(name, variables=cxxvariables)
 529     if platform.is_msvc():
 530         objs += cxx('minidump-win32', variables=cxxvariables)
 531     objs += cc('getopt')
 532 else:
 533     objs += cxx('subprocess-posix')
 534 if platform.is_aix():
 535     objs += cc('getopt')
 536 if platform.is_msvc():
 537     ninja_lib = n.build(built('ninja.lib'), 'ar', objs)
 538 else:
 539     ninja_lib = n.build(built('libninja.a'), 'ar', objs)
 540 n.newline()
 541
 542 if platform.is_msvc():
 543     libs.append('ninja.lib')
 544 else:
 545     libs.append('-lninja')
 546
 547 if platform.is_aix() and not platform.is_os400_pase():
 548     libs.append('-lperfstat')
 549
 550 all_targets = []
 551
 552 n.comment('Main executable is library plus main() function.')
 553 objs = cxx('ninja', variables=cxxvariables)
 554 ninja = n.build(binary('ninja'), 'link', objs, implicit=ninja_lib,
 555                 variables=[('libs', libs)])
 556 n.newline()
 557 all_targets += ninja
 558
 559 if options.bootstrap:
 560     # We've built the ninja binary.  Don't run any more commands
 561     # through the bootstrap executor, but continue writing the
 562     # build.ninja file.
 563     n = ninja_writer
 564
 565 n.comment('Tests all build into ninja_test executable.')
 566
 567 objs = []
 568 if platform.is_msvc():
 569     cxxvariables = [('pdb', 'ninja_test.pdb')]
 570
 571 for name in ['build_log_test',
 572              'build_test',
 573              'clean_test',
 574              'clparser_test',
 575              'depfile_parser_test',
 576              'deps_log_test',
 577              'dyndep_parser_test',
 578              'disk_interface_test',
 579              'edit_distance_test',
 580              'graph_test',
 581              'json_test',
 582              'lexer_test',
 583              'manifest_parser_test',
 584              'missing_deps_test',
 585              'ninja_test',
 586              'state_test',
 587              'status_test',
 588              'string_piece_util_test',
 589              'subprocess_test',
 590              'test',
 591              'util_test']:
 592     objs += cxx(name, variables=cxxvariables)
 593 if platform.is_windows():
 594     for name in ['includes_normalize_test', 'msvc_helper_test']:
 595         objs += cxx(name, variables=cxxvariables)
 596
 597 ninja_test = n.build(binary('ninja_test'), 'link', objs, implicit=ninja_lib,
 598                      variables=[('libs', libs)])
 599 n.newline()
 600 all_targets += ninja_test
 601
 602
 603 n.comment('Ancillary executables.')
 604
 605 if platform.is_aix() and '-maix64' not in ldflags:
 606     # Both hash_collision_bench and manifest_parser_perftest require more
 607     # memory than will fit in the standard 32-bit AIX shared stack/heap (256M)
 608     libs.append('-Wl,-bmaxdata:0x80000000')
 609
 610 for name in ['build_log_perftest',
 611              'canon_perftest',
 612              'depfile_parser_perftest',
 613              'hash_collision_bench',
 614              'manifest_parser_perftest',
 615              'clparser_perftest']:
 616   if platform.is_msvc():
 617     cxxvariables = [('pdb', name + '.pdb')]
 618   objs = cxx(name, variables=cxxvariables)
 619   all_targets += n.build(binary(name), 'link', objs,
 620                          implicit=ninja_lib, variables=[('libs', libs)])
 621
 622 n.newline()
 623
 624 n.comment('Generate a graph using the "graph" tool.')
 625 n.rule('gendot',
 626        command='./ninja -t graph all > $out')
 627 n.rule('gengraph',
 628        command='dot -Tpng $in > $out')
 629 dot = n.build(built('graph.dot'), 'gendot', ['ninja', 'build.ninja'])
 630 n.build('graph.png', 'gengraph', dot)
 631 n.newline()
 632
 633 n.comment('Generate the manual using asciidoc.')
 634 n.rule('asciidoc',
 635        command='asciidoc -b docbook -d book -o $out $in',
 636        description='ASCIIDOC $out')
 637 n.rule('xsltproc',
 638        command='xsltproc --nonet doc/docbook.xsl $in > $out',
 639        description='XSLTPROC $out')
 640 docbookxml = n.build(built('manual.xml'), 'asciidoc', doc('manual.asciidoc'))
 641 manual = n.build(doc('manual.html'), 'xsltproc', docbookxml,
 642                  implicit=[doc('style.css'), doc('docbook.xsl')])
 643 n.build('manual', 'phony',
 644         order_only=manual)
 645 n.newline()
 646
 647 n.rule('dblatex',
 648        command='dblatex -q -o $out -p doc/dblatex.xsl $in',
 649        description='DBLATEX $out')
 650 n.build(doc('manual.pdf'), 'dblatex', docbookxml,
 651         implicit=[doc('dblatex.xsl')])
 652
 653 n.comment('Generate Doxygen.')
 654 n.rule('doxygen',
 655        command='doxygen $in',
 656        description='DOXYGEN $in')
 657 n.variable('doxygen_mainpage_generator',
 658            src('gen_doxygen_mainpage.sh'))
 659 n.rule('doxygen_mainpage',
 660        command='$doxygen_mainpage_generator $in > $out',
 661        description='DOXYGEN_MAINPAGE $out')
 662 mainpage = n.build(built('doxygen_mainpage'), 'doxygen_mainpage',
 663                    ['README.md', 'COPYING'],
 664                    implicit=['$doxygen_mainpage_generator'])
 665 n.build('doxygen', 'doxygen', doc('doxygen.config'),
 666         implicit=mainpage)
 667 n.newline()
 668
 669 if not host.is_mingw():
 670     n.comment('Regenerate build files if build script changes.')
 671     n.rule('configure',
 672            command='${configure_env}%s $root/configure.py $configure_args' %
 673                options.with_python,
 674            generator=True)
 675     n.build('build.ninja', 'configure',
 676             implicit=['$root/configure.py',
 677                       os.path.normpath('$root/misc/ninja_syntax.py')])
 678     n.newline()
 679
 680 n.default(ninja)
 681 n.newline()
 682
 683 if host.is_linux():
 684     n.comment('Packaging')
 685     n.rule('rpmbuild',
 686            command="misc/packaging/rpmbuild.sh",
 687            description='Building rpms..')
 688     n.build('rpm', 'rpmbuild')
 689     n.newline()
 690
 691 n.build('all', 'phony', all_targets)
 692
 693 n.close()
 694 print('wrote %s.' % BUILD_FILENAME)
 695
 696 if options.bootstrap:
 697     print('bootstrap complete.  rebuilding...')
 698
 699     rebuild_args = []
 700
 701     if platform.can_rebuild_in_place():
 702         rebuild_args.append('./ninja')
 703     else:
 704         if platform.is_windows():
 705             bootstrap_exe = 'ninja.bootstrap.exe'
 706             final_exe = 'ninja.exe'
 707         else:
 708             bootstrap_exe = './ninja.bootstrap'
 709             final_exe = './ninja'
 710
 711         if os.path.exists(bootstrap_exe):
 712             os.unlink(bootstrap_exe)
 713         os.rename(final_exe, bootstrap_exe)
 714
 715         rebuild_args.append(bootstrap_exe)
 716
 717     if options.verbose:
 718         rebuild_args.append('-v')
 719
 720     subprocess.check_call(rebuild_args)