3 # Copyright 2001 Google Inc. All Rights Reserved.
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
9 # http://www.apache.org/licenses/LICENSE-2.0
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.
17 """Script that generates the build.ninja for ninja itself.
19 Projects that use ninja themselves should either write a similar script
20 or use a meta-build system that supports Ninja output."""
22 from __future__ import print_function
24 from optparse import OptionParser
31 sys.path.insert(0, 'misc')
35 class Platform(object):
36 """Represents a host/target platform and its specific build attributes."""
37 def __init__(self, platform):
38 self._platform = platform
39 if self._platform is not None:
41 self._platform = sys.platform
42 if self._platform.startswith('linux'):
43 self._platform = 'linux'
44 elif self._platform.startswith('freebsd'):
45 self._platform = 'freebsd'
46 elif self._platform.startswith('gnukfreebsd'):
47 self._platform = 'freebsd'
48 elif self._platform.startswith('openbsd'):
49 self._platform = 'openbsd'
50 elif self._platform.startswith('solaris') or self._platform == 'sunos5':
51 self._platform = 'solaris'
52 elif self._platform.startswith('mingw'):
53 self._platform = 'mingw'
54 elif self._platform.startswith('win'):
55 self._platform = 'msvc'
56 elif self._platform.startswith('bitrig'):
57 self._platform = 'bitrig'
58 elif self._platform.startswith('netbsd'):
59 self._platform = 'netbsd'
62 def known_platforms():
63 return ['linux', 'darwin', 'freebsd', 'openbsd', 'solaris', 'sunos5',
64 'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd']
70 return self._platform == 'linux'
73 return self._platform == 'mingw'
76 return self._platform == 'msvc'
78 def msvc_needs_fs(self):
79 popen = subprocess.Popen(['cl', '/nologo', '/?'],
80 stdout=subprocess.PIPE,
81 stderr=subprocess.PIPE)
82 out, err = popen.communicate()
83 return '/FS ' in str(out)
86 return self.is_mingw() or self.is_msvc()
89 return self._platform == 'solaris'
91 def uses_usr_local(self):
92 return self._platform in ('freebsd', 'openbsd', 'bitrig')
94 def supports_ppoll(self):
95 return self._platform in ('linux', 'openbsd', 'bitrig')
99 """API shim for ninja_syntax.Writer that instead runs the commands.
101 Used to bootstrap Ninja from scratch. In --bootstrap mode this
102 class is used to execute all the commands to build an executable.
103 It also proxies all calls to an underlying ninja_syntax.Writer, to
104 behave like non-bootstrap mode.
106 def __init__(self, writer):
108 # Map of variable name => expanded variable value.
110 # Map of rule name => dict of rule attributes.
115 def comment(self, text):
116 return self.writer.comment(text)
119 return self.writer.newline()
121 def variable(self, key, val):
122 self.vars[key] = self._expand(val)
123 return self.writer.variable(key, val)
125 def rule(self, name, **kwargs):
126 self.rules[name] = kwargs
127 return self.writer.rule(name, **kwargs)
129 def build(self, outputs, rule, inputs=None, **kwargs):
130 ruleattr = self.rules[rule]
131 cmd = ruleattr.get('command')
132 if cmd is None: # A phony rule, for example.
135 # Implement just enough of Ninja variable expansion etc. to
136 # make the bootstrap build work.
138 'in': self._expand_paths(inputs),
139 'out': self._expand_paths(outputs)
141 for key, val in kwargs.get('variables', []):
142 local_vars[key] = ' '.join(ninja_syntax.as_list(val))
144 self._run_command(self._expand(cmd, local_vars))
146 return self.writer.build(outputs, rule, inputs, **kwargs)
148 def default(self, paths):
149 return self.writer.default(paths)
151 def _expand_paths(self, paths):
152 """Expand $vars in an array of paths, e.g. from a 'build' block."""
153 paths = ninja_syntax.as_list(paths)
154 return ' '.join(map(self._expand, paths))
156 def _expand(self, str, local_vars={}):
157 """Expand $vars in a string."""
158 return ninja_syntax.expand(str, self.vars, local_vars)
160 def _run_command(self, cmdline):
161 """Run a subcommand, quietly. Prints the full command on error."""
163 subprocess.check_call(cmdline, shell=True)
164 except subprocess.CalledProcessError, e:
165 print('when running: ', cmdline)
169 parser = OptionParser()
170 profilers = ['gmon', 'pprof']
171 parser.add_option('--bootstrap', action='store_true',
172 help='bootstrap a ninja binary from nothing')
173 parser.add_option('--platform',
174 help='target platform (' +
175 '/'.join(Platform.known_platforms()) + ')',
176 choices=Platform.known_platforms())
177 parser.add_option('--host',
178 help='host platform (' +
179 '/'.join(Platform.known_platforms()) + ')',
180 choices=Platform.known_platforms())
181 parser.add_option('--debug', action='store_true',
182 help='enable debugging extras',)
183 parser.add_option('--profile', metavar='TYPE',
185 help='enable profiling (' + '/'.join(profilers) + ')',)
186 parser.add_option('--with-gtest', metavar='PATH', help='ignored')
187 parser.add_option('--with-python', metavar='EXE',
188 help='use EXE as the Python interpreter',
189 default=os.path.basename(sys.executable))
190 parser.add_option('--force-pselect', action='store_true',
191 help='ppoll() is used by default where available, '
192 'but some platforms may need to use pselect instead',)
193 (options, args) = parser.parse_args()
195 print('ERROR: extra unparsed command-line arguments:', args)
198 platform = Platform(options.platform)
200 host = Platform(options.host)
204 BUILD_FILENAME = 'build.ninja'
205 ninja_writer = ninja_syntax.Writer(open(BUILD_FILENAME, 'w'))
208 if options.bootstrap:
209 # Make the build directory.
214 # Wrap ninja_writer with the Bootstrapper, which also executes the
216 print('bootstrapping ninja...')
219 n.comment('This file is used to build ninja itself.')
220 n.comment('It is generated by ' + os.path.basename(__file__) + '.')
223 n.variable('ninja_required_version', '1.3')
226 n.comment('The arguments passed to configure.py, for rerunning it.')
227 configure_args = sys.argv[1:]
228 if '--bootstrap' in configure_args:
229 configure_args.remove('--bootstrap')
230 n.variable('configure_args', ' '.join(configure_args))
231 env_keys = set(['CXX', 'AR', 'CFLAGS', 'LDFLAGS'])
232 configure_env = dict((k, os.environ[k]) for k in os.environ if k in env_keys)
234 config_str = ' '.join([k + '=' + pipes.quote(configure_env[k])
235 for k in configure_env])
236 n.variable('configure_env', config_str + '$ ')
239 CXX = configure_env.get('CXX', 'g++')
241 if platform.is_msvc():
246 return os.path.join('src', filename)
248 return os.path.join('$builddir', filename)
250 return os.path.join('doc', filename)
251 def cc(name, **kwargs):
252 return n.build(built(name + objext), 'cxx', src(name + '.c'), **kwargs)
253 def cxx(name, **kwargs):
254 return n.build(built(name + objext), 'cxx', src(name + '.cc'), **kwargs)
256 if platform.is_windows():
258 n.build(name, 'phony', exe)
262 n.variable('builddir', 'build')
263 n.variable('cxx', CXX)
264 if platform.is_msvc():
265 n.variable('ar', 'link')
267 n.variable('ar', configure_env.get('AR', 'ar'))
269 if platform.is_msvc():
270 cflags = ['/showIncludes',
271 '/nologo', # Don't print startup banner.
272 '/Zi', # Create pdb with debug info.
273 '/W4', # Highest warning level.
274 '/WX', # Warnings as errors.
275 '/wd4530', '/wd4100', '/wd4706',
276 '/wd4512', '/wd4800', '/wd4702', '/wd4819',
277 # Disable warnings about passing "this" during initialization.
279 '/GR-', # Disable RTTI.
280 # Disable size_t -> int truncation warning.
281 # We never have strings or arrays larger than 2**31.
283 '/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
284 '/D_VARIADIC_MAX=10',
285 '/DNINJA_PYTHON="%s"' % options.with_python]
286 if options.bootstrap:
287 # In bootstrap mode, we have no ninja process to catch /showIncludes
289 cflags.remove('/showIncludes')
290 if platform.msvc_needs_fs():
292 ldflags = ['/DEBUG', '/libpath:$builddir']
293 if not options.debug:
294 cflags += ['/Ox', '/DNDEBUG', '/GL']
295 ldflags += ['/LTCG', '/OPT:REF', '/OPT:ICF']
297 cflags = ['-g', '-Wall', '-Wextra',
299 '-Wno-unused-parameter',
302 '-fvisibility=hidden', '-pipe',
303 '-Wno-missing-field-initializers',
304 '-DNINJA_PYTHON="%s"' % options.with_python]
306 cflags += ['-D_GLIBCXX_DEBUG', '-D_GLIBCXX_DEBUG_PEDANTIC']
307 cflags.remove('-fno-rtti') # Needed for above pedanticness.
309 cflags += ['-O2', '-DNDEBUG']
310 if 'clang' in os.path.basename(CXX):
311 cflags += ['-fcolor-diagnostics']
312 if platform.is_mingw():
313 cflags += ['-D_WIN32_WINNT=0x0501']
314 ldflags = ['-L$builddir']
315 if platform.uses_usr_local():
316 cflags.append('-I/usr/local/include')
317 ldflags.append('-L/usr/local/lib')
321 if platform.is_mingw():
322 cflags.remove('-fvisibility=hidden');
323 ldflags.append('-static')
324 elif platform.is_solaris():
325 cflags.remove('-fvisibility=hidden')
326 elif platform.is_msvc():
329 if options.profile == 'gmon':
331 ldflags.append('-pg')
332 elif options.profile == 'pprof':
333 cflags.append('-fno-omit-frame-pointer')
334 libs.extend(['-Wl,--no-as-needed', '-lprofiler'])
336 if platform.supports_ppoll() and not options.force_pselect:
337 cflags.append('-DUSE_PPOLL')
339 have_browse = not platform.is_windows() and not platform.is_solaris()
341 cflags.append('-DNINJA_HAVE_BROWSE')
343 def shell_escape(str):
344 """Escape str such that it's interpreted as a single argument by
347 # This isn't complete, but it's just enough to make NINJA_PYTHON work.
348 if platform.is_windows():
351 return "'%s'" % str.replace("'", "\\'")
354 if 'CFLAGS' in configure_env:
355 cflags.append(configure_env['CFLAGS'])
356 n.variable('cflags', ' '.join(shell_escape(flag) for flag in cflags))
357 if 'LDFLAGS' in configure_env:
358 ldflags.append(configure_env['LDFLAGS'])
359 n.variable('ldflags', ' '.join(shell_escape(flag) for flag in ldflags))
362 if platform.is_msvc():
364 command='$cxx $cflags -c $in /Fo$out',
365 description='CXX $out',
366 deps='msvc' # /showIncludes is included in $cflags.
370 command='$cxx -MMD -MT $out -MF $out.d $cflags -c $in -o $out',
373 description='CXX $out')
378 command='lib /nologo /ltcg /out:$out $in',
379 description='LIB $out')
380 elif host.is_mingw():
382 command='cmd /c $ar cqs $out.tmp $in && move /Y $out.tmp $out',
383 description='AR $out')
386 command='rm -f $out && $ar crs $out $in',
387 description='AR $out')
390 if platform.is_msvc():
392 command='$cxx $in $libs /nologo /link $ldflags /out:$out',
393 description='LINK $out')
396 command='$cxx $ldflags -o $out $in $libs',
397 description='LINK $out')
403 n.comment('browse_py.h is used to inline browse.py.')
405 command='src/inline.sh $varname < $in > $out',
406 description='INLINE $out')
407 n.build(built('browse_py.h'), 'inline', src('browse.py'),
408 implicit='src/inline.sh',
409 variables=[('varname', 'kBrowsePy')])
412 objs += cxx('browse', order_only=built('browse_py.h'))
415 n.comment('the depfile parser and ninja lexers are generated using re2c.')
418 proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
419 return int(proc.communicate()[0], 10) >= 1103
424 command='re2c -b -i --no-generation-date -o $out $in',
425 description='RE2C $out')
426 # Generate the .cc files in the source directory so we can check them in.
427 n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
428 n.build(src('lexer.cc'), 're2c', src('lexer.in.cc'))
430 print("warning: A compatible version of re2c (>= 0.11.3) was not found; "
431 "changes to src/*.in.cc will not affect your build.")
434 n.comment('Core source files all build into ninja library.')
435 for name in ['build',
454 if platform.is_windows():
455 for name in ['subprocess-win32',
456 'includes_normalize-win32',
458 'msvc_helper_main-win32']:
460 if platform.is_msvc():
461 objs += cxx('minidump-win32')
464 objs += cxx('subprocess-posix')
465 if platform.is_msvc():
466 ninja_lib = n.build(built('ninja.lib'), 'ar', objs)
468 ninja_lib = n.build(built('libninja.a'), 'ar', objs)
471 if platform.is_msvc():
472 libs.append('ninja.lib')
474 libs.append('-lninja')
478 n.comment('Main executable is library plus main() function.')
480 ninja = n.build(binary('ninja'), 'link', objs, implicit=ninja_lib,
481 variables=[('libs', libs)])
485 if options.bootstrap:
486 # We've built the ninja binary. Don't run any more commands
487 # through the bootstrap executor, but continue writing the
491 n.comment('Tests all build into ninja_test executable.')
495 for name in ['build_log_test',
498 'depfile_parser_test',
500 'disk_interface_test',
501 'edit_distance_test',
504 'manifest_parser_test',
511 if platform.is_windows():
512 for name in ['includes_normalize_test', 'msvc_helper_test']:
515 ninja_test = n.build(binary('ninja_test'), 'link', objs, implicit=ninja_lib,
516 variables=[('libs', libs)])
518 all_targets += ninja_test
521 n.comment('Ancillary executables.')
522 objs = cxx('build_log_perftest')
523 all_targets += n.build(binary('build_log_perftest'), 'link', objs,
524 implicit=ninja_lib, variables=[('libs', libs)])
525 objs = cxx('canon_perftest')
526 all_targets += n.build(binary('canon_perftest'), 'link', objs,
527 implicit=ninja_lib, variables=[('libs', libs)])
528 objs = cxx('depfile_parser_perftest')
529 all_targets += n.build(binary('depfile_parser_perftest'), 'link', objs,
530 implicit=ninja_lib, variables=[('libs', libs)])
531 objs = cxx('hash_collision_bench')
532 all_targets += n.build(binary('hash_collision_bench'), 'link', objs,
533 implicit=ninja_lib, variables=[('libs', libs)])
534 objs = cxx('manifest_parser_perftest')
535 all_targets += n.build(binary('manifest_parser_perftest'), 'link', objs,
536 implicit=ninja_lib, variables=[('libs', libs)])
539 n.comment('Generate a graph using the "graph" tool.')
541 command='./ninja -t graph all > $out')
543 command='dot -Tpng $in > $out')
544 dot = n.build(built('graph.dot'), 'gendot', ['ninja', 'build.ninja'])
545 n.build('graph.png', 'gengraph', dot)
548 n.comment('Generate the manual using asciidoc.')
550 command='asciidoc -b docbook -d book -o $out $in',
551 description='ASCIIDOC $out')
553 command='xsltproc --nonet doc/docbook.xsl $in > $out',
554 description='XSLTPROC $out')
555 xml = n.build(built('manual.xml'), 'asciidoc', doc('manual.asciidoc'))
556 manual = n.build(doc('manual.html'), 'xsltproc', xml,
557 implicit=doc('style.css'))
558 n.build('manual', 'phony',
562 n.comment('Generate Doxygen.')
564 command='doxygen $in',
565 description='DOXYGEN $in')
566 n.variable('doxygen_mainpage_generator',
567 src('gen_doxygen_mainpage.sh'))
568 n.rule('doxygen_mainpage',
569 command='$doxygen_mainpage_generator $in > $out',
570 description='DOXYGEN_MAINPAGE $out')
571 mainpage = n.build(built('doxygen_mainpage'), 'doxygen_mainpage',
572 ['README', 'COPYING'],
573 implicit=['$doxygen_mainpage_generator'])
574 n.build('doxygen', 'doxygen', doc('doxygen.config'),
578 if not host.is_mingw():
579 n.comment('Regenerate build files if build script changes.')
581 command='${configure_env}%s configure.py $configure_args' %
584 n.build('build.ninja', 'configure',
585 implicit=['configure.py', os.path.normpath('misc/ninja_syntax.py')])
592 n.comment('Packaging')
594 command="misc/packaging/rpmbuild.sh",
595 description='Building rpms..')
596 n.build('rpm', 'rpmbuild')
599 n.build('all', 'phony', all_targets)
602 print('wrote %s.' % BUILD_FILENAME)
604 if options.bootstrap:
605 print('bootstrap complete. rebuilding...')
606 if platform.is_windows():
607 bootstrap_exe = 'ninja.bootstrap.exe'
608 if os.path.exists(bootstrap_exe):
609 os.unlink(bootstrap_exe)
610 os.rename('ninja.exe', bootstrap_exe)
611 subprocess.check_call('ninja.bootstrap.exe', shell=True)
613 subprocess.check_call('./ninja', shell=True)