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#!/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 optparse import OptionParser
import os
import sys
sys.path.insert(0, 'misc')
import ninja_syntax
parser = OptionParser()
platforms = ['linux', 'freebsd', 'mingw', 'msvc']
profilers = ['gmon', 'pprof']
parser.add_option('--platform',
help='target platform (' + '/'.join(platforms) + ')',
choices=platforms)
parser.add_option('--host',
help='host platform (' + '/'.join(platforms) + ')',
choices=platforms)
parser.add_option('--debug', action='store_true',
help='enable debugging flags',)
parser.add_option('--profile', metavar='TYPE',
choices=profilers,
help='enable profiling (' + '/'.join(profilers) + ')',)
parser.add_option('--with-gtest', metavar='PATH',
help='use gtest unpacked in directory PATH')
parser.add_option('--with-python', metavar='EXE',
help='use EXE as the Python interpreter',
default=os.path.basename(sys.executable))
(options, args) = parser.parse_args()
platform = options.platform
if platform is None:
platform = sys.platform
if platform.startswith('linux'):
platform = 'linux'
elif platform.startswith('freebsd'):
platform = 'freebsd'
elif platform.startswith('mingw') or platform.startswith('win'):
platform = 'mingw'
host = options.host or platform
BUILD_FILENAME = 'build.ninja'
buildfile = open(BUILD_FILENAME, 'w')
n = ninja_syntax.Writer(buildfile)
n.comment('This file is used to build ninja itself.')
n.comment('It is generated by ' + os.path.basename(__file__) + '.')
n.newline()
n.comment('The arguments passed to configure.py, for rerunning it.')
n.variable('configure_args', ' '.join(sys.argv[1:]))
n.newline()
def src(filename):
return os.path.join('src', filename)
def built(filename):
return os.path.join('$builddir', filename)
def doc(filename):
return os.path.join('doc', filename)
def cxx(name, **kwargs):
return n.build(built(name + '.o'), 'cxx', src(name + '.cc'), **kwargs)
def binary(name):
if platform == 'mingw':
return name + '.exe'
return name
n.variable('builddir', 'build')
n.variable('cxx', os.environ.get('CXX', 'g++'))
n.variable('ar', os.environ.get('AR', 'ar'))
if platform != 'msvc':
cflags = ['-g', '-Wall', '-Wextra',
'-Wno-deprecated',
'-Wno-unused-parameter',
'-fno-exceptions',
'-fvisibility=hidden', '-pipe',
"'-DNINJA_PYTHON=\"%s\"'" % (options.with_python,)]
if not options.debug:
cflags += ['-O2', '-DNDEBUG']
ldflags = ['-L$builddir']
else:
cflags = []
ldflags = []
libs = []
if platform == 'mingw':
cflags.remove('-fvisibility=hidden');
ldflags.append('-static')
else:
if options.profile == 'gmon':
cflags.append('-pg')
ldflags.append('-pg')
elif options.profile == 'pprof':
libs.append('-lprofiler')
if 'CFLAGS' in os.environ:
cflags.append(os.environ['CFLAGS'])
n.variable('cflags', ' '.join(cflags))
if 'LDFLAGS' in os.environ:
ldflags.append(os.environ['LDFLAGS'])
n.variable('ldflags', ' '.join(ldflags))
n.newline()
if platform != 'msvc':
command='$cxx -MMD -MF $out.d $cflags -c $in -o $out'
else:
command='$cxx $cflags $in /out:$out'
n.rule('cxx',
command='cmd',
depfile='$out.d',
description='CXX $out')
n.newline()
if host != 'mingw' and platform != 'msvc':
n.rule('ar',
command='rm -f $out && $ar crs $out $in',
description='AR $out')
if platform == 'msvc':
n.rule('ar',
command='cmd /c lib.exe /out:$out.tmp $in && move /Y $out.tmp $out',
description='AR $out')
else:
n.rule('ar',
command='cmd /c $ar cqs $out.tmp $in && move /Y $out.tmp $out',
description='AR $out')
n.newline()
n.rule('link',
command='$cxx $ldflags -o $out $in $libs',
description='LINK $out')
n.newline()
objs = []
if platform != 'mingw' and platform != 'msvc':
n.comment('browse_py.h is used to inline browse.py.')
n.rule('inline',
command='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 is generated using re2c.')
n.rule('re2c',
command='re2c -b -i --no-generation-date -o $out $in',
description='RE2C $out')
# Generate the .cc file in the source directory so we can check it in.
n.build(src('depfile_parser.cc'), 're2c', src('depfile_parser.in.cc'))
n.newline()
n.comment('Core source files all build into ninja library.')
for name in ['build',
'build_log',
'clean',
'depfile_parser',
'disk_interface',
'edit_distance',
'eval_env',
'graph',
'graphviz',
'parsers',
'state',
'util']:
objs += cxx(name)
if platform == 'mingw' or platform == 'msvc':
objs += cxx('subprocess-win32')
else:
objs += cxx('subprocess')
ninja_lib = n.build(built('libninja.a'), 'ar', objs)
n.newline()
libs.append('-lninja')
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
n.comment('Tests all build into ninja_test executable.')
variables = []
test_cflags = None
test_ldflags = None
test_libs = libs
objs = []
if options.with_gtest:
path = options.with_gtest
gtest_all_incs = '-I%s -I%s' % (path, os.path.join(path, 'include'))
objs += n.build(built('gtest-all.o'), 'cxx',
os.path.join(path, 'src/gtest-all.cc'),
variables=[('cflags', gtest_all_incs)])
objs += n.build(built('gtest_main.o'), 'cxx',
os.path.join(path, 'src/gtest_main.cc'),
variables=[('cflags', gtest_all_incs)])
test_cflags = cflags + ['-I%s' % os.path.join(path, 'include')]
else:
test_libs.extend(['-lgtest_main', '-lgtest'])
for name in ['build_log_test',
'build_test',
'clean_test',
'depfile_parser_test',
'disk_interface_test',
'edit_distance_test',
'eval_env_test',
'graph_test',
'parsers_test',
'state_test',
'subprocess_test',
'test',
'util_test']:
objs += cxx(name, variables=[('cflags', test_cflags)])
if platform != 'mingw':
test_libs.append('-lpthread')
ninja_test = n.build(binary('ninja_test'), 'link', objs, implicit=ninja_lib,
variables=[('ldflags', test_ldflags),
('libs', test_libs)])
n.newline()
all_targets += ninja_test
n.comment('Perftest executable.')
objs = cxx('parser_perftest')
parser_perftest = n.build(binary('parser_perftest'), 'link', objs,
implicit=ninja_lib,
variables=[('libs', '-L$builddir -lninja')])
n.newline()
all_targets += parser_perftest
n.comment('Generate a graph using the "graph" tool.')
n.rule('gendot',
command='./ninja -t graph > $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 -a toc -o $out $in',
description='ASCIIDOC $in')
manual = n.build(doc('manual.html'), 'asciidoc', doc('manual.asciidoc'))
n.build('manual', 'phony',
order_only=manual)
n.newline()
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 $out')
mainpage = n.build(built('doxygen_mainpage'), 'doxygen_mainpage',
['README', 'HACKING', 'COPYING'],
implicit=['$doxygen_mainpage_generator'])
n.build('doxygen', 'doxygen', doc('doxygen.config'),
implicit=mainpage)
n.newline()
if host != 'mingw':
n.comment('Regenerate build files if build script changes.')
n.rule('configure',
command=options.with_python + ' configure.py $configure_args',
generator=True)
n.build('build.ninja', 'configure',
implicit=['configure.py', 'misc/ninja_syntax.py'])
n.newline()
n.comment('Build only the main binary by default.')
n.default(ninja)
n.newline()
n.build('all', 'phony', all_targets)
print 'wrote %s.' % BUILD_FILENAME
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