xref: /third_party/ninja/configure.py (revision 695b41ee) 
1#!/usr/bin/env python3
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
19Projects that use ninja themselves should either write a similar script
20or use a meta-build system that supports Ninja output."""
21
22from optparse import OptionParser
23import os
24import shlex
25import subprocess
26import sys
27
28sourcedir = os.path.dirname(os.path.realpath(__file__))
29sys.path.insert(0, os.path.join(sourcedir, 'misc'))
30import ninja_syntax
31
32
33class Platform(object):
34    """Represents a host/target platform and its specific build attributes."""
35    def __init__(self, platform):
36        self._platform = platform
37        if self._platform is not None:
38            return
39        self._platform = sys.platform
40        if self._platform.startswith('linux'):
41            self._platform = 'linux'
42        elif self._platform.startswith('freebsd'):
43            self._platform = 'freebsd'
44        elif self._platform.startswith('gnukfreebsd'):
45            self._platform = 'freebsd'
46        elif self._platform.startswith('openbsd'):
47            self._platform = 'openbsd'
48        elif self._platform.startswith('solaris') or self._platform == 'sunos5':
49            self._platform = 'solaris'
50        elif self._platform.startswith('mingw'):
51            self._platform = 'mingw'
52        elif self._platform.startswith('win'):
53            self._platform = 'msvc'
54        elif self._platform.startswith('bitrig'):
55            self._platform = 'bitrig'
56        elif self._platform.startswith('netbsd'):
57            self._platform = 'netbsd'
58        elif self._platform.startswith('aix'):
59            self._platform = 'aix'
60        elif self._platform.startswith('os400'):
61            self._platform = 'os400'
62        elif self._platform.startswith('dragonfly'):
63            self._platform = 'dragonfly'
64
65    @staticmethod
66    def known_platforms():
67      return ['linux', 'darwin', 'freebsd', 'openbsd', 'solaris', 'sunos5',
68              'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd', 'aix',
69              'dragonfly']
70
71    def platform(self):
72        return self._platform
73
74    def is_linux(self):
75        return self._platform == 'linux'
76
77    def is_mingw(self):
78        return self._platform == 'mingw'
79
80    def is_msvc(self):
81        return self._platform == 'msvc'
82
83    def msvc_needs_fs(self):
84        popen = subprocess.Popen(['cl', '/nologo', '/help'],
85                                 stdout=subprocess.PIPE,
86                                 stderr=subprocess.PIPE)
87        out, err = popen.communicate()
88        return b'/FS' in out
89
90    def is_windows(self):
91        return self.is_mingw() or self.is_msvc()
92
93    def is_solaris(self):
94        return self._platform == 'solaris'
95
96    def is_aix(self):
97        return self._platform == 'aix'
98
99    def is_os400_pase(self):
100        return self._platform == 'os400' or os.uname().sysname.startswith('OS400')
101
102    def uses_usr_local(self):
103        return self._platform in ('freebsd', 'openbsd', 'bitrig', 'dragonfly', 'netbsd')
104
105    def supports_ppoll(self):
106        return self._platform in ('freebsd', 'linux', 'openbsd', 'bitrig',
107                                  'dragonfly')
108
109    def supports_ninja_browse(self):
110        return (not self.is_windows()
111                and not self.is_solaris()
112                and not self.is_aix())
113
114    def can_rebuild_in_place(self):
115        return not (self.is_windows() or self.is_aix())
116
117class Bootstrap:
118    """API shim for ninja_syntax.Writer that instead runs the commands.
119
120    Used to bootstrap Ninja from scratch.  In --bootstrap mode this
121    class is used to execute all the commands to build an executable.
122    It also proxies all calls to an underlying ninja_syntax.Writer, to
123    behave like non-bootstrap mode.
124    """
125    def __init__(self, writer, verbose=False):
126        self.writer = writer
127        self.verbose = verbose
128        # Map of variable name => expanded variable value.
129        self.vars = {}
130        # Map of rule name => dict of rule attributes.
131        self.rules = {
132            'phony': {}
133        }
134
135    def comment(self, text):
136        return self.writer.comment(text)
137
138    def newline(self):
139        return self.writer.newline()
140
141    def variable(self, key, val):
142        # In bootstrap mode, we have no ninja process to catch /showIncludes
143        # output.
144        self.vars[key] = self._expand(val).replace('/showIncludes', '')
145        return self.writer.variable(key, val)
146
147    def rule(self, name, **kwargs):
148        self.rules[name] = kwargs
149        return self.writer.rule(name, **kwargs)
150
151    def build(self, outputs, rule, inputs=None, **kwargs):
152        ruleattr = self.rules[rule]
153        cmd = ruleattr.get('command')
154        if cmd is None:  # A phony rule, for example.
155            return
156
157        # Implement just enough of Ninja variable expansion etc. to
158        # make the bootstrap build work.
159        local_vars = {
160            'in': self._expand_paths(inputs),
161            'out': self._expand_paths(outputs)
162        }
163        for key, val in kwargs.get('variables', []):
164            local_vars[key] = ' '.join(ninja_syntax.as_list(val))
165
166        self._run_command(self._expand(cmd, local_vars))
167
168        return self.writer.build(outputs, rule, inputs, **kwargs)
169
170    def default(self, paths):
171        return self.writer.default(paths)
172
173    def _expand_paths(self, paths):
174        """Expand $vars in an array of paths, e.g. from a 'build' block."""
175        paths = ninja_syntax.as_list(paths)
176        return ' '.join(map(self._shell_escape, (map(self._expand, paths))))
177
178    def _expand(self, str, local_vars={}):
179        """Expand $vars in a string."""
180        return ninja_syntax.expand(str, self.vars, local_vars)
181
182    def _shell_escape(self, path):
183        """Quote paths containing spaces."""
184        return '"%s"' % path if ' ' in path else path
185
186    def _run_command(self, cmdline):
187        """Run a subcommand, quietly.  Prints the full command on error."""
188        try:
189            if self.verbose:
190                print(cmdline)
191            subprocess.check_call(cmdline, shell=True)
192        except subprocess.CalledProcessError:
193            print('when running: ', cmdline)
194            raise
195
196
197parser = OptionParser()
198profilers = ['gmon', 'pprof']
199parser.add_option('--bootstrap', action='store_true',
200                  help='bootstrap a ninja binary from nothing')
201parser.add_option('--verbose', action='store_true',
202                  help='enable verbose build')
203parser.add_option('--platform',
204                  help='target platform (' +
205                       '/'.join(Platform.known_platforms()) + ')',
206                  choices=Platform.known_platforms())
207parser.add_option('--host',
208                  help='host platform (' +
209                       '/'.join(Platform.known_platforms()) + ')',
210                  choices=Platform.known_platforms())
211parser.add_option('--debug', action='store_true',
212                  help='enable debugging extras',)
213parser.add_option('--profile', metavar='TYPE',
214                  choices=profilers,
215                  help='enable profiling (' + '/'.join(profilers) + ')',)
216parser.add_option('--with-gtest', metavar='PATH', help='ignored')
217parser.add_option('--with-python', metavar='EXE',
218                  help='use EXE as the Python interpreter',
219                  default=os.path.basename(sys.executable))
220parser.add_option('--force-pselect', action='store_true',
221                  help='ppoll() is used by default where available, '
222                       'but some platforms may need to use pselect instead',)
223(options, args) = parser.parse_args()
224if args:
225    print('ERROR: extra unparsed command-line arguments:', args)
226    sys.exit(1)
227
228platform = Platform(options.platform)
229if options.host:
230    host = Platform(options.host)
231else:
232    host = platform
233
234BUILD_FILENAME = 'build.ninja'
235ninja_writer = ninja_syntax.Writer(open(BUILD_FILENAME, 'w'))
236n = ninja_writer
237
238if options.bootstrap:
239    # Make the build directory.
240    try:
241        os.mkdir('build')
242    except OSError:
243        pass
244    # Wrap ninja_writer with the Bootstrapper, which also executes the
245    # commands.
246    print('bootstrapping ninja...')
247    n = Bootstrap(n, verbose=options.verbose)
248
249n.comment('This file is used to build ninja itself.')
250n.comment('It is generated by ' + os.path.basename(__file__) + '.')
251n.newline()
252
253n.variable('ninja_required_version', '1.3')
254n.newline()
255
256n.comment('The arguments passed to configure.py, for rerunning it.')
257configure_args = sys.argv[1:]
258if '--bootstrap' in configure_args:
259    configure_args.remove('--bootstrap')
260n.variable('configure_args', ' '.join(configure_args))
261env_keys = set(['CXX', 'AR', 'CFLAGS', 'CXXFLAGS', 'LDFLAGS'])
262configure_env = dict((k, os.environ[k]) for k in os.environ if k in env_keys)
263if configure_env:
264    config_str = ' '.join([k + '=' + shlex.quote(configure_env[k])
265                           for k in configure_env])
266    n.variable('configure_env', config_str + '$ ')
267n.newline()
268
269CXX = configure_env.get('CXX', 'c++')
270objext = '.o'
271if platform.is_msvc():
272    CXX = 'cl'
273    objext = '.obj'
274
275def src(filename):
276    return os.path.join('$root', 'src', filename)
277def built(filename):
278    return os.path.join('$builddir', filename)
279def doc(filename):
280    return os.path.join('$root', 'doc', filename)
281def cc(name, **kwargs):
282    return n.build(built(name + objext), 'cxx', src(name + '.c'), **kwargs)
283def cxx(name, **kwargs):
284    return n.build(built(name + objext), 'cxx', src(name + '.cc'), **kwargs)
285def binary(name):
286    if platform.is_windows():
287        exe = name + '.exe'
288        n.build(name, 'phony', exe)
289        return exe
290    return name
291
292root = sourcedir
293if root == os.getcwd():
294    # In the common case where we're building directly in the source
295    # tree, simplify all the paths to just be cwd-relative.
296    root = '.'
297n.variable('root', root)
298n.variable('builddir', 'build')
299n.variable('cxx', CXX)
300if platform.is_msvc():
301    n.variable('ar', 'link')
302else:
303    n.variable('ar', configure_env.get('AR', 'ar'))
304
305def search_system_path(file_name):
306  """Find a file in the system path."""
307  for dir in os.environ['path'].split(';'):
308    path = os.path.join(dir, file_name)
309    if os.path.exists(path):
310      return path
311
312# Note that build settings are separately specified in CMakeLists.txt and
313# these lists should be kept in sync.
314if platform.is_msvc():
315    if not search_system_path('cl.exe'):
316        raise Exception('cl.exe not found. Run again from the Developer Command Prompt for VS')
317    cflags = ['/showIncludes',
318              '/nologo',  # Don't print startup banner.
319              '/Zi',  # Create pdb with debug info.
320              '/W4',  # Highest warning level.
321              '/WX',  # Warnings as errors.
322              '/wd4530', '/wd4100', '/wd4706', '/wd4244',
323              '/wd4512', '/wd4800', '/wd4702', '/wd4819',
324              # Disable warnings about constant conditional expressions.
325              '/wd4127',
326              # Disable warnings about passing "this" during initialization.
327              '/wd4355',
328              # Disable warnings about ignored typedef in DbgHelp.h
329              '/wd4091',
330              '/GR-',  # Disable RTTI.
331              '/Zc:__cplusplus',
332              # Disable size_t -> int truncation warning.
333              # We never have strings or arrays larger than 2**31.
334              '/wd4267',
335              '/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
336              '/D_HAS_EXCEPTIONS=0',
337              '/DNINJA_PYTHON="%s"' % options.with_python]
338    if platform.msvc_needs_fs():
339        cflags.append('/FS')
340    ldflags = ['/DEBUG', '/libpath:$builddir']
341    if not options.debug:
342        cflags += ['/Ox', '/DNDEBUG', '/GL']
343        ldflags += ['/LTCG', '/OPT:REF', '/OPT:ICF']
344else:
345    cflags = ['-g', '-Wall', '-Wextra',
346              '-Wno-deprecated',
347              '-Wno-missing-field-initializers',
348              '-Wno-unused-parameter',
349              '-fno-rtti',
350              '-fno-exceptions',
351              '-std=c++11',
352              '-fvisibility=hidden', '-pipe',
353              '-DNINJA_PYTHON="%s"' % options.with_python]
354    if options.debug:
355        cflags += ['-D_GLIBCXX_DEBUG', '-D_GLIBCXX_DEBUG_PEDANTIC']
356        cflags.remove('-fno-rtti')  # Needed for above pedanticness.
357    else:
358        cflags += ['-O2', '-DNDEBUG']
359    try:
360        proc = subprocess.Popen(
361            [CXX, '-fdiagnostics-color', '-c', '-x', 'c++', '/dev/null',
362             '-o', '/dev/null'],
363            stdout=open(os.devnull, 'wb'), stderr=subprocess.STDOUT)
364        if proc.wait() == 0:
365            cflags += ['-fdiagnostics-color']
366    except:
367        pass
368    if platform.is_mingw():
369        cflags += ['-D_WIN32_WINNT=0x0601', '-D__USE_MINGW_ANSI_STDIO=1']
370    ldflags = ['-L$builddir']
371    if platform.uses_usr_local():
372        cflags.append('-I/usr/local/include')
373        ldflags.append('-L/usr/local/lib')
374    if platform.is_aix():
375        # printf formats for int64_t, uint64_t; large file support
376        cflags.append('-D__STDC_FORMAT_MACROS')
377        cflags.append('-D_LARGE_FILES')
378
379
380libs = []
381
382if platform.is_mingw():
383    cflags.remove('-fvisibility=hidden');
384    ldflags.append('-static')
385elif platform.is_solaris():
386    cflags.remove('-fvisibility=hidden')
387elif platform.is_aix():
388    cflags.remove('-fvisibility=hidden')
389elif platform.is_msvc():
390    pass
391else:
392    if options.profile == 'gmon':
393        cflags.append('-pg')
394        ldflags.append('-pg')
395    elif options.profile == 'pprof':
396        cflags.append('-fno-omit-frame-pointer')
397        libs.extend(['-Wl,--no-as-needed', '-lprofiler'])
398
399if platform.supports_ppoll() and not options.force_pselect:
400    cflags.append('-DUSE_PPOLL')
401if platform.supports_ninja_browse():
402    cflags.append('-DNINJA_HAVE_BROWSE')
403
404# Search for generated headers relative to build dir.
405cflags.append('-I.')
406
407def shell_escape(str):
408    """Escape str such that it's interpreted as a single argument by
409    the shell."""
410
411    # This isn't complete, but it's just enough to make NINJA_PYTHON work.
412    if platform.is_windows():
413      return str
414    if '"' in str:
415        return "'%s'" % str.replace("'", "\\'")
416    return str
417
418if 'CFLAGS' in configure_env:
419    cflags.append(configure_env['CFLAGS'])
420    ldflags.append(configure_env['CFLAGS'])
421if 'CXXFLAGS' in configure_env:
422    cflags.append(configure_env['CXXFLAGS'])
423    ldflags.append(configure_env['CXXFLAGS'])
424n.variable('cflags', ' '.join(shell_escape(flag) for flag in cflags))
425if 'LDFLAGS' in configure_env:
426    ldflags.append(configure_env['LDFLAGS'])
427n.variable('ldflags', ' '.join(shell_escape(flag) for flag in ldflags))
428n.newline()
429
430if platform.is_msvc():
431    n.rule('cxx',
432        command='$cxx $cflags -c $in /Fo$out /Fd' + built('$pdb'),
433        description='CXX $out',
434        deps='msvc'  # /showIncludes is included in $cflags.
435    )
436else:
437    n.rule('cxx',
438        command='$cxx -MMD -MT $out -MF $out.d $cflags -c $in -o $out',
439        depfile='$out.d',
440        deps='gcc',
441        description='CXX $out')
442n.newline()
443
444if host.is_msvc():
445    n.rule('ar',
446           command='lib /nologo /ltcg /out:$out $in',
447           description='LIB $out')
448elif host.is_mingw():
449    n.rule('ar',
450           command='$ar crs $out $in',
451           description='AR $out')
452else:
453    n.rule('ar',
454           command='rm -f $out && $ar crs $out $in',
455           description='AR $out')
456n.newline()
457
458if platform.is_msvc():
459    n.rule('link',
460        command='$cxx $in $libs /nologo /link $ldflags /out:$out',
461        description='LINK $out')
462else:
463    n.rule('link',
464        command='$cxx $ldflags -o $out $in $libs',
465        description='LINK $out')
466n.newline()
467
468objs = []
469
470if platform.supports_ninja_browse():
471    n.comment('browse_py.h is used to inline browse.py.')
472    n.rule('inline',
473           command='"%s"' % src('inline.sh') + ' $varname < $in > $out',
474           description='INLINE $out')
475    n.build(built('browse_py.h'), 'inline', src('browse.py'),
476            implicit=src('inline.sh'),
477            variables=[('varname', 'kBrowsePy')])
478    n.newline()
479
480    objs += cxx('browse', order_only=built('browse_py.h'))
481    n.newline()
482
483n.comment('the depfile parser and ninja lexers are generated using re2c.')
484def has_re2c():
485    try:
486        proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
487        return int(proc.communicate()[0], 10) >= 1503
488    except OSError:
489        return False
490if has_re2c():
491    n.rule('re2c',
492           command='re2c -b -i --no-generation-date --no-version -o $out $in',
493           description='RE2C $out')
494    # Generate the .cc files in the source directory so we can check them in.
495    n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
496    n.build(src('lexer.cc'), 're2c', src('lexer.in.cc'))
497else:
498    print("warning: A compatible version of re2c (>= 0.15.3) was not found; "
499           "changes to src/*.in.cc will not affect your build.")
500n.newline()
501
502cxxvariables = []
503if platform.is_msvc():
504    cxxvariables = [('pdb', 'ninja.pdb')]
505
506n.comment('Generate a library for `ninja-re2c`.')
507re2c_objs = []
508for name in ['depfile_parser', 'lexer']:
509    re2c_objs += cxx(name, variables=cxxvariables)
510if platform.is_msvc():
511    n.build(built('ninja-re2c.lib'), 'ar', re2c_objs)
512else:
513    n.build(built('libninja-re2c.a'), 'ar', re2c_objs)
514n.newline()
515
516n.comment('Core source files all build into ninja library.')
517objs.extend(re2c_objs)
518for name in ['build',
519             'build_log',
520             'clean',
521             'clparser',
522             'debug_flags',
523             'deps_log',
524             'disk_interface',
525             'dyndep',
526             'dyndep_parser',
527             'edit_distance',
528             'eval_env',
529             'graph',
530             'graphviz',
531             'json',
532             'line_printer',
533             'manifest_parser',
534             'metrics',
535             'missing_deps',
536             'parser',
537             'state',
538             'status',
539             'string_piece_util',
540             'util',
541             'version']:
542    objs += cxx(name, variables=cxxvariables)
543if platform.is_windows():
544    for name in ['subprocess-win32',
545                 'includes_normalize-win32',
546                 'msvc_helper-win32',
547                 'msvc_helper_main-win32']:
548        objs += cxx(name, variables=cxxvariables)
549    if platform.is_msvc():
550        objs += cxx('minidump-win32', variables=cxxvariables)
551    objs += cc('getopt')
552else:
553    objs += cxx('subprocess-posix')
554if platform.is_aix():
555    objs += cc('getopt')
556if platform.is_msvc():
557    ninja_lib = n.build(built('ninja.lib'), 'ar', objs)
558else:
559    ninja_lib = n.build(built('libninja.a'), 'ar', objs)
560n.newline()
561
562if platform.is_msvc():
563    libs.append('ninja.lib')
564else:
565    libs.append('-lninja')
566
567if platform.is_aix() and not platform.is_os400_pase():
568    libs.append('-lperfstat')
569
570all_targets = []
571
572n.comment('Main executable is library plus main() function.')
573objs = cxx('ninja', variables=cxxvariables)
574ninja = n.build(binary('ninja'), 'link', objs, implicit=ninja_lib,
575                variables=[('libs', libs)])
576n.newline()
577all_targets += ninja
578
579if options.bootstrap:
580    # We've built the ninja binary.  Don't run any more commands
581    # through the bootstrap executor, but continue writing the
582    # build.ninja file.
583    n = ninja_writer
584
585n.comment('Ancillary executables.')
586
587if platform.is_aix() and '-maix64' not in ldflags:
588    # Both hash_collision_bench and manifest_parser_perftest require more
589    # memory than will fit in the standard 32-bit AIX shared stack/heap (256M)
590    libs.append('-Wl,-bmaxdata:0x80000000')
591
592for name in ['build_log_perftest',
593             'canon_perftest',
594             'depfile_parser_perftest',
595             'hash_collision_bench',
596             'manifest_parser_perftest',
597             'clparser_perftest']:
598  if platform.is_msvc():
599    cxxvariables = [('pdb', name + '.pdb')]
600  objs = cxx(name, variables=cxxvariables)
601  all_targets += n.build(binary(name), 'link', objs,
602                         implicit=ninja_lib, variables=[('libs', libs)])
603
604n.newline()
605
606n.comment('Generate a graph using the "graph" tool.')
607n.rule('gendot',
608       command='./ninja -t graph all > $out')
609n.rule('gengraph',
610       command='dot -Tpng $in > $out')
611dot = n.build(built('graph.dot'), 'gendot', ['ninja', 'build.ninja'])
612n.build('graph.png', 'gengraph', dot)
613n.newline()
614
615n.comment('Generate the manual using asciidoc.')
616n.rule('asciidoc',
617       command='asciidoc -b docbook -d book -o $out $in',
618       description='ASCIIDOC $out')
619n.rule('xsltproc',
620       command='xsltproc --nonet doc/docbook.xsl $in > $out',
621       description='XSLTPROC $out')
622docbookxml = n.build(built('manual.xml'), 'asciidoc', doc('manual.asciidoc'))
623manual = n.build(doc('manual.html'), 'xsltproc', docbookxml,
624                 implicit=[doc('style.css'), doc('docbook.xsl')])
625n.build('manual', 'phony',
626        order_only=manual)
627n.newline()
628
629n.rule('dblatex',
630       command='dblatex -q -o $out -p doc/dblatex.xsl $in',
631       description='DBLATEX $out')
632n.build(doc('manual.pdf'), 'dblatex', docbookxml,
633        implicit=[doc('dblatex.xsl')])
634
635n.comment('Generate Doxygen.')
636n.rule('doxygen',
637       command='doxygen $in',
638       description='DOXYGEN $in')
639n.variable('doxygen_mainpage_generator',
640           src('gen_doxygen_mainpage.sh'))
641n.rule('doxygen_mainpage',
642       command='$doxygen_mainpage_generator $in > $out',
643       description='DOXYGEN_MAINPAGE $out')
644mainpage = n.build(built('doxygen_mainpage'), 'doxygen_mainpage',
645                   ['README.md', 'COPYING'],
646                   implicit=['$doxygen_mainpage_generator'])
647n.build('doxygen', 'doxygen', doc('doxygen.config'),
648        implicit=mainpage)
649n.newline()
650
651if not host.is_mingw():
652    n.comment('Regenerate build files if build script changes.')
653    n.rule('configure',
654           command='${configure_env}%s $root/configure.py $configure_args' %
655               options.with_python,
656           generator=True)
657    n.build('build.ninja', 'configure',
658            implicit=['$root/configure.py',
659                      os.path.normpath('$root/misc/ninja_syntax.py')])
660    n.newline()
661
662n.default(ninja)
663n.newline()
664
665if host.is_linux():
666    n.comment('Packaging')
667    n.rule('rpmbuild',
668           command="misc/packaging/rpmbuild.sh",
669           description='Building rpms..')
670    n.build('rpm', 'rpmbuild')
671    n.newline()
672
673n.build('all', 'phony', all_targets)
674
675n.close()
676print('wrote %s.' % BUILD_FILENAME)
677
678if options.bootstrap:
679    print('bootstrap complete.  rebuilding...')
680
681    rebuild_args = []
682
683    if platform.can_rebuild_in_place():
684        rebuild_args.append('./ninja')
685    else:
686        if platform.is_windows():
687            bootstrap_exe = 'ninja.bootstrap.exe'
688            final_exe = 'ninja.exe'
689        else:
690            bootstrap_exe = './ninja.bootstrap'
691            final_exe = './ninja'
692
693        if os.path.exists(bootstrap_exe):
694            os.unlink(bootstrap_exe)
695        os.rename(final_exe, bootstrap_exe)
696
697        rebuild_args.append(bootstrap_exe)
698
699    if options.verbose:
700        rebuild_args.append('-v')
701
702    subprocess.check_call(rebuild_args)
703