#!/usr/bin/env python
#
# Copyright 2001 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Script that generates the build.ninja for ninja itself.
Projects that use ninja themselves should either write a similar script
or use a meta-build system that supports Ninja output."""
from __future__ import print_function
from optparse import OptionParser
import os
import pipes
import string
import subprocess
import sys
sourcedir = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, os.path.join(sourcedir, 'misc'))
import ninja_syntax
class Platform(object):
"""Represents a host/target platform and its specific build attributes."""
def __init__(self, platform):
self._platform = platform
if self._platform is not None:
return
self._platform = sys.platform
if self._platform.startswith('linux'):
self._platform = 'linux'
elif self._platform.startswith('freebsd'):
self._platform = 'freebsd'
elif self._platform.startswith('gnukfreebsd'):
self._platform = 'freebsd'
elif self._platform.startswith('openbsd'):
self._platform = 'openbsd'
elif self._platform.startswith('solaris') or self._platform == 'sunos5':
self._platform = 'solaris'
elif self._platform.startswith('mingw'):
self._platform = 'mingw'
elif self._platform.startswith('win'):
self._platform = 'msvc'
elif self._platform.startswith('bitrig'):
self._platform = 'bitrig'
elif self._platform.startswith('netbsd'):
self._platform = 'netbsd'
elif self._platform.startswith('aix'):
self._platform = 'aix'
elif self._platform.startswith('dragonfly'):
self._platform = 'dragonfly'
@staticmethod
def known_platforms():
return ['linux', 'darwin', 'freebsd', 'openbsd', 'solaris', 'sunos5',
'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd', 'aix',
'dragonfly']
def platform(self):
return self._platform
def is_linux(self):
return self._platform == 'linux'
def is_mingw(self):
return self._platform == 'mingw'
def is_msvc(self):
return self._platform == 'msvc'
def msvc_needs_fs(self):
popen = subprocess.Popen(['cl', '/nologo', '/?'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = popen.communicate()
return b'/FS' in out
def is_windows(self):
return self.is_mingw() or self.is_msvc()
def is_solaris(self):
return self._platform == 'solaris'
def is_aix(self):
return self._platform == 'aix'
def uses_usr_local(self):
return self._platform in ('freebsd', 'openbsd', 'bitrig', 'dragonfly')
def supports_ppoll(self):
return self._platform in ('freebsd', 'linux', 'openbsd', 'bitrig',
'dragonfly')
def supports_ninja_browse(self):
return (not self.is_windows()
and not self.is_solaris()
and not self.is_aix())
def can_rebuild_in_place(self):
return not (self.is_windows() or self.is_aix())
class Bootstrap:
"""API shim for ninja_syntax.Writer that instead runs the commands.
Used to bootstrap Ninja from scratch. In --bootstrap mode this
class is used to execute all the commands to build an executable.
It also proxies all calls to an underlying ninja_syntax.Writer, to
behave like non-bootstrap mode.
"""
def __init__(self, writer, verbose=False):
self.writer = writer
self.verbose = verbose
# Map of variable name => expanded variable value.
self.vars = {}
# Map of rule name => dict of rule attributes.
self.rules = {
'phony': {}
}
def comment(self, text):
return self.writer.comment(text)
def newline(self):
return self.writer.newline()
def variable(self, key, val):
# In bootstrap mode, we have no ninja process to catch /showIncludes
# output.
self.vars[key] = self._expand(val).replace('/showIncludes', '')
return self.writer.variable(key, val)
def rule(self, name, **kwargs):
self.rules[name] = kwargs
return self.writer.rule(name, **kwargs)
def build(self, outputs, rule, inputs=None, **kwargs):
ruleattr = self.rules[rule]
cmd = ruleattr.get('command')
if cmd is None: # A phony rule, for example.
return
# Implement just enough of Ninja variable expansion etc. to
# make the bootstrap build work.
local_vars = {
'in': self._expand_paths(inputs),
'out': self._expand_paths(outputs)
}
for key, val in kwargs.get('variables', []):
local_vars[key] = ' '.join(ninja_syntax.as_list(val))
self._run_command(self._expand(cmd, local_vars))
return self.writer.build(outputs, rule, inputs, **kwargs)
def default(self, paths):
return self.writer.default(paths)
def _expand_paths(self, paths):
"""Expand $vars in an array of paths, e.g. from a 'build' block."""
paths = ninja_syntax.as_list(paths)
return ' '.join(map(self._shell_escape, (map(self._expand, paths))))
def _expand(self, str, local_vars={}):
"""Expand $vars in a string."""
return ninja_syntax.expand(str, self.vars, local_vars)
def _shell_escape(self, path):
"""Quote paths containing spaces."""
return '"%s"' % path if ' ' in path else path
def _run_command(self, cmdline):
"""Run a subcommand, quietly. Prints the full command on error."""
try:
if self.verbose:
print(cmdline)
subprocess.check_call(cmdline, shell=True)
except subprocess.CalledProcessError:
print('when running: ', cmdline)
raise
parser = OptionParser()
profilers = ['gmon', 'pprof']
parser.add_option('--bootstrap', action='store_true',
help='bootstrap a ninja binary from nothing')
parser.add_option('--verbose', action='store_true',
help='enable verbose build')
parser.add_option('--platform',
help='target platform (' +
'/'.join(Platform.known_platforms()) + ')',
choices=Platform.known_platforms())
parser.add_option('--host',
help='host platform (' +
'/'.join(Platform.known_platforms()) + ')',
choices=Platform.known_platforms())
parser.add_option('--debug', action='store_true',
help='enable debugging extras',)
parser.add_option('--profile', metavar='TYPE',
choices=profilers,
help='enable profiling (' + '/'.join(profilers) + ')',)
parser.add_option('--with-gtest', metavar='PATH', help='ignored')
parser.add_option('--with-python', metavar='EXE',
help='use EXE as the Python interpreter',
default=os.path.basename(sys.executable))
parser.add_option('--force-pselect', action='store_true',
help='ppoll() is used by default where available, '
'but some platforms may need to use pselect instead',)
(options, args) = parser.parse_args()
if args:
print('ERROR: extra unparsed command-line arguments:', args)
sys.exit(1)
platform = Platform(options.platform)
if options.host:
host = Platform(options.host)
else:
host = platform
BUILD_FILENAME = 'build.ninja'
ninja_writer = ninja_syntax.Writer(open(BUILD_FILENAME, 'w'))
n = ninja_writer
if options.bootstrap:
# Make the build directory.
try:
os.mkdir('build')
except OSError:
pass
# Wrap ninja_writer with the Bootstrapper, which also executes the
# commands.
print('bootstrapping ninja...')
n = Bootstrap(n, verbose=options.verbose)
n.comment('This file is used to build ninja itself.')
n.comment('It is generated by ' + os.path.basename(__file__) + '.')
n.newline()
n.variable('ninja_required_version', '1.3')
n.newline()
n.comment('The arguments passed to configure.py, for rerunning it.')
configure_args = sys.argv[1:]
if '--bootstrap' in configure_args:
configure_args.remove('--bootstrap')
n.variable('configure_args', ' '.join(configure_args))
env_keys = set(['CXX', 'AR', 'CFLAGS', 'LDFLAGS'])
configure_env = dict((k, os.environ[k]) for k in os.environ if k in env_keys)
if configure_env:
config_str = ' '.join([k + '=' + pipes.quote(configure_env[k])
for k in configure_env])
n.variable('configure_env', config_str + '$ ')
n.newline()
CXX = configure_env.get('CXX', 'g++')
objext = '.o'
if platform.is_msvc():
CXX = 'cl'
objext = '.obj'
def src(filename):
return os.path.join('$root', 'src', filename)
def built(filename):
return os.path.join('$builddir', filename)
def doc(filename):
return os.path.join('$root', 'doc', filename)
def cc(name, **kwargs):
return n.build(built(name + objext), 'cxx', src(name + '.c'), **kwargs)
def cxx(name, **kwargs):
return n.build(built(name + objext), 'cxx', src(name + '.cc'), **kwargs)
def binary(name):
if platform.is_windows():
exe = name + '.exe'
n.build(name, 'phony', exe)
return exe
return name
root = sourcedir
if root == os.getcwd():
# In the common case where we're building directly in the source
# tree, simplify all the paths to just be cwd-relative.
root = '.'
n.variable('root', root)
n.variable('builddir', 'build')
n.variable('cxx', CXX)
if platform.is_msvc():
n.variable('ar', 'link')
else:
n.variable('ar', configure_env.get('AR', 'ar'))
if platform.is_msvc():
cflags = ['/showIncludes',
'/nologo', # Don't print startup banner.
'/Zi', # Create pdb with debug info.
'/W4', # Highest warning level.
'/WX', # Warnings as errors.
'/wd4530', '/wd4100', '/wd4706', '/wd4244',
'/wd4512', '/wd4800', '/wd4702', '/wd4819',
# Disable warnings about constant conditional expressions.
'/wd4127',
# Disable warnings about passing "this" during initialization.
'/wd4355',
# Disable warnings about ignored typedef in DbgHelp.h
'/wd4091',
'/GR-', # Disable RTTI.
# Disable size_t -> int truncation warning.
# We never have strings or arrays larger than 2**31.
'/wd4267',
'/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
'/D_HAS_EXCEPTIONS=0',
'/DNINJA_PYTHON="%s"' % options.with_python]
if platform.msvc_needs_fs():
cflags.append('/FS')
ldflags = ['/DEBUG', '/libpath:$builddir']
if not options.debug:
cflags += ['/Ox', '/DNDEBUG', '/GL']
ldflags += ['/LTCG', '/OPT:REF', '/OPT:ICF']
else:
cflags = ['-g', '-Wall', '-Wextra',
'-Wno-deprecated',
'-Wno-missing-field-initializers',
'-Wno-unused-parameter',
'-fno-rtti',
'-fno-exceptions',
'-fvisibility=hidden', '-pipe',
'-DNINJA_PYTHON="%s"' % options.with_python]
if options.debug:
cflags += ['-D_GLIBCXX_DEBUG', '-D_GLIBCXX_DEBUG_PEDANTIC']
cflags.remove('-fno-rtti') # Needed for above pedanticness.
else:
cflags += ['-O2', '-DNDEBUG']
try:
proc = subprocess.Popen(
[CXX, '-fdiagnostics-color', '-c', '-x', 'c++', '/dev/null',
'-o', '/dev/null'],
stdout=open(os.devnull, 'wb'), stderr=subprocess.STDOUT)
if proc.wait() == 0:
cflags += ['-fdiagnostics-color']
except:
pass
if platform.is_mingw():
cflags += ['-D_WIN32_WINNT=0x0501']
ldflags = ['-L$builddir']
if platform.uses_usr_local():
cflags.append('-I/usr/local/include')
ldflags.append('-L/usr/local/lib')
libs = []
if platform.is_mingw():
cflags.remove('-fvisibility=hidden');
ldflags.append('-static')
elif platform.is_solaris():
cflags.remove('-fvisibility=hidden')
elif platform.is_aix():
cflags.remove('-fvisibility=hidden')
elif platform.is_msvc():
pass
else:
if options.profile == 'gmon':
cflags.append('-pg')
ldflags.append('-pg')
elif options.profile == 'pprof':
cflags.append('-fno-omit-frame-pointer')
libs.extend(['-Wl,--no-as-needed', '-lprofiler'])
if platform.supports_ppoll() and not options.force_pselect:
cflags.append('-DUSE_PPOLL')
if platform.supports_ninja_browse():
cflags.append('-DNINJA_HAVE_BROWSE')
# Search for generated headers relative to build dir.
cflags.append('-I.')
def shell_escape(str):
"""Escape str such that it's interpreted as a single argument by
the shell."""
# This isn't complete, but it's just enough to make NINJA_PYTHON work.
if platform.is_windows():
return str
if '"' in str:
return "'%s'" % str.replace("'", "\\'")
return str
if 'CFLAGS' in configure_env:
cflags.append(configure_env['CFLAGS'])
n.variable('cflags', ' '.join(shell_escape(flag) for flag in cflags))
if 'LDFLAGS' in configure_env:
ldflags.append(configure_env['LDFLAGS'])
n.variable('ldflags', ' '.join(shell_escape(flag) for flag in ldflags))
n.newline()
if platform.is_msvc():
n.rule('cxx',
command='$cxx $cflags -c $in /Fo$out',
description='CXX $out',
deps='msvc' # /showIncludes is included in $cflags.
)
else:
n.rule('cxx',
command='$cxx -MMD -MT $out -MF $out.d $cflags -c $in -o $out',
depfile='$out.d',
deps='gcc',
description='CXX $out')
n.newline()
if host.is_msvc():
n.rule('ar',
command='lib /nologo /ltcg /out:$out $in',
description='LIB $out')
elif host.is_mingw():
n.rule('ar',
command='cmd /c $ar cqs $out.tmp $in && move /Y $out.tmp $out',
description='AR $out')
else:
n.rule('ar',
command='rm -f $out && $ar crs $out $in',
description='AR $out')
n.newline()
if platform.is_msvc():
n.rule('link',
command='$cxx $in $libs /nologo /link $ldflags /out:$out',
description='LINK $out')
else:
n.rule('link',
command='$cxx $ldflags -o $out $in $libs',
description='LINK $out')
n.newline()
objs = []
if platform.supports_ninja_browse():
n.comment('browse_py.h is used to inline browse.py.')
n.rule('inline',
command='"%s"' % src('inline.sh') + ' $varname < $in > $out',
description='INLINE $out')
n.build(built('browse_py.h'), 'inline', src('browse.py'),
implicit=src('inline.sh'),
variables=[('varname', 'kBrowsePy')])
n.newline()
objs += cxx('browse', order_only=built('browse_py.h'))
n.newline()
n.comment('the depfile parser and ninja lexers are generated using re2c.')
def has_re2c():
try:
proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
return int(proc.communicate()[0], 10) >= 1103
except OSError:
return False
if has_re2c():
n.rule('re2c',
command='re2c -b -i --no-generation-date -o $out $in',
description='RE2C $out')
# Generate the .cc files in the source directory so we can check them in.
n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
n.build(src('lexer.cc'), 're2c', src('lexer.in.cc'))
else:
print("warning: A compatible version of re2c (>= 0.11.3) was not found; "
"changes to src/*.in.cc will not affect your build.")
n.newline()
n.comment('Core source files all build into ninja library.')
for name in ['build',
'build_log',
'clean',
'clparser',
'debug_flags',
'depfile_parser',
'deps_log',
'disk_interface',
'edit_distance',
'eval_env',
'graph',
'graphviz',
'lexer',
'line_printer',
'manifest_parser',
'metrics',
'state',
'string_piece_util',
'util',
'version']:
objs += cxx(name)
if platform.is_windows():
for name in ['subprocess-win32',
'includes_normalize-win32',
'msvc_helper-win32',
'msvc_helper_main-win32']:
objs += cxx(name)
if platform.is_msvc():
objs += cxx('minidump-win32')
objs += cc('getopt')
else:
objs += cxx('subprocess-posix')
if platform.is_aix():
objs += cc('getopt')
if platform.is_msvc():
ninja_lib = n.build(built('ninja.lib'), 'ar', objs)
else:
ninja_lib = n.build(built('libninja.a'), 'ar', objs)
n.newline()
if platform.is_msvc():
libs.append('ninja.lib')
else:
libs.append('-lninja')
if platform.is_aix():
libs.append('-lperfstat')
all_targets = []
n.comment('Main executable is library plus main() function.')
objs = cxx('ninja')
ninja = n.build(binary('ninja'), 'link', objs, implicit=ninja_lib,
variables=[('libs', libs)])
n.newline()
all_targets += ninja
if options.bootstrap:
# We've built the ninja binary. Don't run any more commands
# through the bootstrap executor, but continue writing the
# build.ninja file.
n = ninja_writer
n.comment('Tests all build into ninja_test executable.')
objs = []
for name in ['build_log_test',
'build_test',
'clean_test',
'clparser_test',
'depfile_parser_test',
'deps_log_test',
'disk_interface_test',
'edit_distance_test',
'graph_test',
'lexer_test',
'manifest_parser_test',
'ninja_test',
'state_test',
'string_piece_util_test',
'subprocess_test',
'test',
'util_test']:
objs += cxx(name)
if platform.is_windows():
for name in ['includes_normalize_test', 'msvc_helper_test']:
objs += cxx(name)
ninja_test = n.build(binary('ninja_test'), 'link', objs, implicit=ninja_lib,
variables=[('libs', libs)])
n.newline()
all_targets += ninja_test
n.comment('Ancillary executables.')
for name in ['build_log_perftest',
'canon_perftest',
'depfile_parser_perftest',
'hash_collision_bench',
'manifest_parser_perftest',
'clparser_perftest']:
objs = cxx(name)
all_targets += n.build(binary(name), 'link', objs,
implicit=ninja_lib, variables=[('libs', libs)])
n.newline()
n.comment('Generate a graph using the "graph" tool.')
n.rule('gendot',
command='./ninja -t graph all > $out')
n.rule('gengraph',
command='dot -Tpng $in > $out')
dot = n.build(built('graph.dot'), 'gendot', ['ninja', 'build.ninja'])
n.build('graph.png', 'gengraph', dot)
n.newline()
n.comment('Generate the manual using asciidoc.')
n.rule('asciidoc',
command='asciidoc -b docbook -d book -o $out $in',
description='ASCIIDOC $out')
n.rule('xsltproc',
command='xsltproc --nonet doc/docbook.xsl $in > $out',
description='XSLTPROC $out')
docbookxml = n.build(built('manual.xml'), 'asciidoc', doc('manual.asciidoc'))
manual = n.build(doc('manual.html'), 'xsltproc', docbookxml,
implicit=[doc('style.css'), doc('docbook.xsl')])
n.build('manual', 'phony',
order_only=manual)
n.newline()
n.rule('dblatex',
command='dblatex -q -o $out -p doc/dblatex.xsl $in',
description='DBLATEX $out')
n.build(doc('manual.pdf'), 'dblatex', docbookxml,
implicit=[doc('dblatex.xsl')])
n.comment('Generate Doxygen.')
n.rule('doxygen',
command='doxygen $in',
description='DOXYGEN $in')
n.variable('doxygen_mainpage_generator',
src('gen_doxygen_mainpage.sh'))
n.rule('doxygen_mainpage',
command='$doxygen_mainpage_generator $in > $out',
description='DOXYGEN_MAINPAGE $out')
mainpage = n.build(built('doxygen_mainpage'), 'doxygen_mainpage',
['README', 'COPYING'],
implicit=['$doxygen_mainpage_generator'])
n.build('doxygen', 'doxygen', doc('doxygen.config'),
implicit=mainpage)
n.newline()
if not host.is_mingw():
n.comment('Regenerate build files if build script changes.')
n.rule('configure',
command='${configure_env}%s $root/configure.py $configure_args' %
options.with_python,
generator=True)
n.build('build.ninja', 'configure',
implicit=['$root/configure.py',
os.path.normpath('$root/misc/ninja_syntax.py')])
n.newline()
n.default(ninja)
n.newline()
if host.is_linux():
n.comment('Packaging')
n.rule('rpmbuild',
command="misc/packaging/rpmbuild.sh",
description='Building rpms..')
n.build('rpm', 'rpmbuild')
n.newline()
n.build('all', 'phony', all_targets)
n.close()
print('wrote %s.' % BUILD_FILENAME)
if options.bootstrap:
print('bootstrap complete. rebuilding...')
rebuild_args = []
if platform.can_rebuild_in_place():
rebuild_args.append('./ninja')
else:
if platform.is_windows():
bootstrap_exe = 'ninja.bootstrap.exe'
final_exe = 'ninja.exe'
else:
bootstrap_exe = './ninja.bootstrap'
final_exe = './ninja'
if os.path.exists(bootstrap_exe):
os.unlink(bootstrap_exe)
os.rename(final_exe, bootstrap_exe)
rebuild_args.append(bootstrap_exe)
if options.verbose:
rebuild_args.append('-v')
subprocess.check_call(rebuild_args)