blob: d547a8ff83eef8668893e39081590659a775a664 [file] [log] [blame]
#!/usr/bin/env python
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Generates build.ninja that will build GN."""
import contextlib
import errno
import optparse
import os
import platform
import re
import subprocess
import sys
import tempfile
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
REPO_ROOT = os.path.dirname(SCRIPT_DIR)
GN_ROOT = os.path.join(REPO_ROOT, 'tools', 'gn')
class Platform(object):
"""Represents a host/target platform."""
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('darwin'):
self._platform = 'darwin'
elif self._platform.startswith('mingw'):
self._platform = 'mingw'
elif self._platform.startswith('win'):
self._platform = 'msvc'
elif self._platform.startswith('aix'):
self._platform = 'aix'
elif self._platform.startswith('fuchsia'):
self._platform = 'fuchsia'
elif self._platform.startswith('freebsd'):
self._platform = 'freebsd'
elif self._platform.startswith('openbsd'):
self._platform = 'openbsd'
@staticmethod
def known_platforms():
return ['linux', 'darwin', 'msvc', 'aix', 'fuchsia', 'openbsd']
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 is_windows(self):
return self.is_mingw() or self.is_msvc()
def is_darwin(self):
return self._platform == 'darwin'
def is_aix(self):
return self._platform == 'aix'
def is_posix(self):
return self._platform in ['linux', 'freebsd', 'darwin', 'aix', 'openbsd']
def main(argv):
parser = optparse.OptionParser(description=sys.modules[__name__].__doc__)
parser.add_option('-d', '--debug', action='store_true',
help='Do a debug build. Defaults to release 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('--use-lto', action='store_true',
help='Enable the use of LTO')
parser.add_option('--use-icf', action='store_true',
help='Enable the use of Identical Code Folding')
parser.add_option('--no-last-commit-position', action='store_true',
help='Do not generate last_commit_position.h.')
parser.add_option('--out-path',
help='The path to generate the build files in.')
parser.add_option('--no-strip', action='store_true',
help='Don\'t strip release build. Useful for profiling.')
options, args = parser.parse_args(argv)
if args:
parser.error('Unrecognized command line arguments: %s.' % ', '.join(args))
platform = Platform(options.platform)
if options.host:
host = Platform(options.host)
else:
host = platform
out_dir = options.out_path or os.path.join(REPO_ROOT, 'out')
if not os.path.isdir(out_dir):
os.makedirs(out_dir)
if not options.no_last_commit_position:
GenerateLastCommitPosition(host,
os.path.join(out_dir, 'last_commit_position.h'))
WriteGNNinja(os.path.join(out_dir, 'build.ninja'), platform, host, options)
return 0
def GenerateLastCommitPosition(host, header):
ROOT_TAG = 'initial-commit'
describe_output = subprocess.check_output(
['git', 'describe', 'HEAD', '--match', ROOT_TAG], shell=host.is_windows(),
cwd=REPO_ROOT)
mo = re.match(ROOT_TAG + '-(\d+)-g([0-9a-f]+)', describe_output.decode())
if not mo:
raise ValueError(
'Unexpected output from git describe when generating version header')
contents = '''// Generated by build/gen.py.
#ifndef OUT_LAST_COMMIT_POSITION_H_
#define OUT_LAST_COMMIT_POSITION_H_
#define LAST_COMMIT_POSITION "%s (%s)"
#endif // OUT_LAST_COMMIT_POSITION_H_
''' % (mo.group(1), mo.group(2))
# Only write/touch this file if the commit position has changed.
old_contents = ''
if os.path.isfile(header):
with open(header, 'r') as f:
old_contents = f.read()
if old_contents != contents:
with open(header, 'w') as f:
f.write(contents)
def WriteGenericNinja(path, static_libraries, executables,
cc, cxx, ar, ld, platform, host, options,
cflags=[], cflags_cc=[], ldflags=[], libflags=[],
include_dirs=[], solibs=[]):
ninja_header_lines = [
'cc = ' + cc,
'cxx = ' + cxx,
'ar = ' + ar,
'ld = ' + ld,
'',
'rule regen',
' command = %s ../build/gen.py%s' % (
sys.executable, ' -d' if options.debug else ''),
' description = Regenerating ninja files',
'',
'build build.ninja: regen',
' generator = 1',
' depfile = build.ninja.d',
'',
]
template_filename = os.path.join(SCRIPT_DIR, {
'msvc': 'build_win.ninja.template',
'darwin': 'build_mac.ninja.template',
'linux': 'build_linux.ninja.template',
'freebsd': 'build_linux.ninja.template',
'aix': 'build_aix.ninja.template',
'openbsd': 'build_openbsd.ninja.template',
}[platform.platform()])
with open(template_filename) as f:
ninja_template = f.read()
if platform.is_windows():
executable_ext = '.exe'
library_ext = '.lib'
object_ext = '.obj'
else:
executable_ext = ''
library_ext = '.a'
object_ext = '.o'
def escape_path_ninja(path):
return path.replace('$ ', '$$ ').replace(' ', '$ ').replace(':', '$:')
def src_to_obj(path):
return escape_path_ninja('%s' % os.path.splitext(path)[0] + object_ext)
def library_to_a(library):
return '%s%s' % (library, library_ext)
ninja_lines = []
def build_source(src_file, settings):
ninja_lines.extend([
'build %s: %s %s' % (src_to_obj(src_file),
settings['tool'],
escape_path_ninja(
os.path.join(REPO_ROOT, src_file))),
' includes = %s' % ' '.join(
['-I' + escape_path_ninja(dirname) for dirname in
include_dirs + settings.get('include_dirs', [])]),
' cflags = %s' % ' '.join(cflags + settings.get('cflags', [])),
' cflags_cc = %s' %
' '.join(cflags_cc + settings.get('cflags_cc', [])),
])
for library, settings in static_libraries.items():
for src_file in settings['sources']:
build_source(src_file, settings)
ninja_lines.append('build %s: alink_thin %s' % (
library_to_a(library),
' '.join([src_to_obj(src_file) for src_file in settings['sources']])))
ninja_lines.append(' libflags = %s' % ' '.join(libflags))
for executable, settings in executables.items():
for src_file in settings['sources']:
build_source(src_file, settings)
ninja_lines.extend([
'build %s%s: link %s | %s' % (
executable, executable_ext,
' '.join([src_to_obj(src_file) for src_file in settings['sources']]),
' '.join([library_to_a(library) for library in settings['libs']])),
' ldflags = %s' % ' '.join(ldflags),
' solibs = %s' % ' '.join(solibs),
' libs = %s' % ' '.join(
[library_to_a(library) for library in settings['libs']]),
])
ninja_lines.append('') # Make sure the file ends with a newline.
with open(path, 'w') as f:
f.write('\n'.join(ninja_header_lines))
f.write(ninja_template)
f.write('\n'.join(ninja_lines))
with open(path + '.d', 'w') as f:
f.write('build.ninja: ' +
os.path.relpath(os.path.join(SCRIPT_DIR, 'gen.py'),
os.path.dirname(path)) + ' ' +
os.path.relpath(template_filename, os.path.dirname(path)) + '\n')
def WriteGNNinja(path, platform, host, options):
if platform.is_msvc():
cc = os.environ.get('CC', 'cl.exe')
cxx = os.environ.get('CXX', 'cl.exe')
ld = os.environ.get('LD', 'link.exe')
ar = os.environ.get('AR', 'lib.exe')
elif platform.is_aix():
cc = os.environ.get('CC', 'gcc')
cxx = os.environ.get('CXX', 'g++')
ld = os.environ.get('LD', 'g++')
ar = os.environ.get('AR', 'ar -X64')
else:
cc = os.environ.get('CC', 'clang')
cxx = os.environ.get('CXX', 'clang++')
ld = cxx
ar = os.environ.get('AR', 'ar')
cflags = os.environ.get('CFLAGS', '').split()
cflags_cc = os.environ.get('CXXFLAGS', '').split()
ldflags = os.environ.get('LDFLAGS', '').split()
libflags = os.environ.get('LIBFLAGS', '').split()
include_dirs = [REPO_ROOT, os.path.dirname(path)]
libs = []
if not platform.is_msvc():
if options.debug:
cflags.extend(['-O0', '-g'])
else:
cflags.append('-DNDEBUG')
cflags.append('-O3')
if options.no_strip:
cflags.append('-g')
ldflags.append('-O3')
# Use -fdata-sections and -ffunction-sections to place each function
# or data item into its own section so --gc-sections can eliminate any
# unused functions and data items.
cflags.extend(['-fdata-sections', '-ffunction-sections'])
ldflags.extend(['-fdata-sections', '-ffunction-sections'])
if platform.is_darwin():
ldflags.append('-Wl,-dead_strip')
elif not platform.is_aix():
# Garbage collection is done by default on aix.
ldflags.append('-Wl,--gc-sections')
# Omit all symbol information from the output file.
if options.no_strip is None:
if platform.is_darwin():
ldflags.append('-Wl,-S')
elif platform.is_aix():
ldflags.append('-Wl,-s')
else:
ldflags.append('-Wl,-strip-all')
# Enable identical code-folding.
if options.use_icf and not platform.is_darwin():
ldflags.append('-Wl,--icf=all')
cflags.extend([
'-D_FILE_OFFSET_BITS=64',
'-D__STDC_CONSTANT_MACROS', '-D__STDC_FORMAT_MACROS',
'-pthread',
'-pipe',
'-fno-exceptions',
'-fno-rtti',
'-fdiagnostics-color',
])
cflags_cc.extend(['-std=c++14', '-Wno-c++11-narrowing'])
if platform.is_linux():
ldflags.extend([
'-static-libstdc++',
'-Wl,--as-needed',
])
# This is needed by libc++.
libs.append('-ldl')
elif platform.is_darwin():
min_mac_version_flag = '-mmacosx-version-min=10.9'
cflags.append(min_mac_version_flag)
ldflags.append(min_mac_version_flag)
elif platform.is_aix():
cflags_cc.append('-maix64')
ldflags.append('-maix64')
if platform.is_posix():
ldflags.append('-pthread')
if options.use_lto:
cflags.extend(['-flto', '-fwhole-program-vtables'])
ldflags.extend(['-flto', '-fwhole-program-vtables'])
elif platform.is_msvc():
if not options.debug:
cflags.extend(['/O2', '/DNDEBUG', '/GL'])
libflags.extend(['/LTCG'])
ldflags.extend(['/LTCG', '/OPT:REF', '/OPT:ICF'])
cflags.extend([
'/DNOMINMAX',
'/DUNICODE',
'/DWIN32_LEAN_AND_MEAN',
'/DWINVER=0x0A00',
'/D_CRT_SECURE_NO_DEPRECATE',
'/D_SCL_SECURE_NO_DEPRECATE',
'/D_UNICODE',
'/D_WIN32_WINNT=0x0A00',
'/FS',
'/W4',
'/WX',
'/Zi',
'/wd4099',
'/wd4100',
'/wd4127',
'/wd4244',
'/wd4267',
'/wd4505',
'/wd4838',
'/wd4996',
])
cflags_cc.extend([
'/GR-',
'/D_HAS_EXCEPTIONS=0',
])
ldflags.extend(['/DEBUG', '/MACHINE:x64'])
static_libraries = {
'base': {'sources': [
'base/callback_internal.cc',
'base/command_line.cc',
'base/environment.cc',
'base/files/file.cc',
'base/files/file_enumerator.cc',
'base/files/file_path.cc',
'base/files/file_path_constants.cc',
'base/files/file_util.cc',
'base/files/scoped_file.cc',
'base/files/scoped_temp_dir.cc',
'base/json/json_parser.cc',
'base/json/json_reader.cc',
'base/json/json_writer.cc',
'base/json/string_escape.cc',
'base/logging.cc',
'base/md5.cc',
'base/memory/ref_counted.cc',
'base/memory/weak_ptr.cc',
'base/sha1.cc',
'base/strings/string_number_conversions.cc',
'base/strings/string_piece.cc',
'base/strings/string_split.cc',
'base/strings/string_util.cc',
'base/strings/string_util_constants.cc',
'base/strings/stringprintf.cc',
'base/strings/utf_string_conversion_utils.cc',
'base/strings/utf_string_conversions.cc',
'base/third_party/icu/icu_utf.cc',
'base/timer/elapsed_timer.cc',
'base/value_iterators.cc',
'base/values.cc',
], 'tool': 'cxx', 'include_dirs': []},
'gn_lib': {'sources': [
'tools/gn/action_target_generator.cc',
'tools/gn/action_values.cc',
'tools/gn/analyzer.cc',
'tools/gn/args.cc',
'tools/gn/binary_target_generator.cc',
'tools/gn/builder.cc',
'tools/gn/builder_record.cc',
'tools/gn/build_settings.cc',
'tools/gn/bundle_data.cc',
'tools/gn/bundle_data_target_generator.cc',
'tools/gn/bundle_file_rule.cc',
'tools/gn/c_include_iterator.cc',
'tools/gn/command_analyze.cc',
'tools/gn/command_args.cc',
'tools/gn/command_check.cc',
'tools/gn/command_clean.cc',
'tools/gn/command_desc.cc',
'tools/gn/command_format.cc',
'tools/gn/command_gen.cc',
'tools/gn/command_help.cc',
'tools/gn/command_meta.cc',
'tools/gn/command_ls.cc',
'tools/gn/command_path.cc',
'tools/gn/command_refs.cc',
'tools/gn/commands.cc',
'tools/gn/compile_commands_writer.cc',
'tools/gn/config.cc',
'tools/gn/config_values.cc',
'tools/gn/config_values_extractors.cc',
'tools/gn/config_values_generator.cc',
'tools/gn/copy_target_generator.cc',
'tools/gn/create_bundle_target_generator.cc',
'tools/gn/deps_iterator.cc',
'tools/gn/desc_builder.cc',
'tools/gn/eclipse_writer.cc',
'tools/gn/err.cc',
'tools/gn/escape.cc',
'tools/gn/exec_process.cc',
'tools/gn/filesystem_utils.cc',
'tools/gn/function_exec_script.cc',
'tools/gn/function_foreach.cc',
'tools/gn/function_forward_variables_from.cc',
'tools/gn/function_get_label_info.cc',
'tools/gn/function_get_path_info.cc',
'tools/gn/function_get_target_outputs.cc',
'tools/gn/function_process_file_template.cc',
'tools/gn/function_read_file.cc',
'tools/gn/function_rebase_path.cc',
'tools/gn/functions.cc',
'tools/gn/function_set_defaults.cc',
'tools/gn/function_set_default_toolchain.cc',
'tools/gn/functions_target.cc',
'tools/gn/function_template.cc',
'tools/gn/function_toolchain.cc',
'tools/gn/function_write_file.cc',
'tools/gn/generated_file_target_generator.cc',
'tools/gn/group_target_generator.cc',
'tools/gn/header_checker.cc',
'tools/gn/import_manager.cc',
'tools/gn/inherited_libraries.cc',
'tools/gn/input_conversion.cc',
'tools/gn/input_file.cc',
'tools/gn/input_file_manager.cc',
'tools/gn/item.cc',
'tools/gn/json_project_writer.cc',
'tools/gn/label.cc',
'tools/gn/label_pattern.cc',
'tools/gn/lib_file.cc',
'tools/gn/loader.cc',
'tools/gn/location.cc',
'tools/gn/metadata.cc',
'tools/gn/metadata_walk.cc',
'tools/gn/ninja_action_target_writer.cc',
'tools/gn/ninja_binary_target_writer.cc',
'tools/gn/ninja_build_writer.cc',
'tools/gn/ninja_bundle_data_target_writer.cc',
'tools/gn/ninja_copy_target_writer.cc',
'tools/gn/ninja_create_bundle_target_writer.cc',
'tools/gn/ninja_generated_file_target_writer.cc',
'tools/gn/ninja_group_target_writer.cc',
'tools/gn/ninja_target_command_util.cc',
'tools/gn/ninja_target_writer.cc',
'tools/gn/ninja_toolchain_writer.cc',
'tools/gn/ninja_utils.cc',
'tools/gn/ninja_writer.cc',
'tools/gn/operators.cc',
'tools/gn/output_conversion.cc',
'tools/gn/output_file.cc',
'tools/gn/parse_node_value_adapter.cc',
'tools/gn/parser.cc',
'tools/gn/parse_tree.cc',
'tools/gn/path_output.cc',
'tools/gn/pattern.cc',
'tools/gn/pool.cc',
'tools/gn/qt_creator_writer.cc',
'tools/gn/runtime_deps.cc',
'tools/gn/scheduler.cc',
'tools/gn/scope.cc',
'tools/gn/scope_per_file_provider.cc',
'tools/gn/settings.cc',
'tools/gn/setup.cc',
'tools/gn/source_dir.cc',
'tools/gn/source_file.cc',
'tools/gn/source_file_type.cc',
'tools/gn/standard_out.cc',
'tools/gn/string_utils.cc',
'tools/gn/substitution_list.cc',
'tools/gn/substitution_pattern.cc',
'tools/gn/substitution_type.cc',
'tools/gn/substitution_writer.cc',
'tools/gn/switches.cc',
'tools/gn/target.cc',
'tools/gn/target_generator.cc',
'tools/gn/template.cc',
'tools/gn/token.cc',
'tools/gn/tokenizer.cc',
'tools/gn/tool.cc',
'tools/gn/toolchain.cc',
'tools/gn/trace.cc',
'tools/gn/value.cc',
'tools/gn/value_extractors.cc',
'tools/gn/variables.cc',
'tools/gn/visibility.cc',
'tools/gn/visual_studio_utils.cc',
'tools/gn/visual_studio_writer.cc',
'tools/gn/xcode_object.cc',
'tools/gn/xcode_writer.cc',
'tools/gn/xml_element_writer.cc',
'util/exe_path.cc',
'util/msg_loop.cc',
'util/semaphore.cc',
'util/sys_info.cc',
'util/ticks.cc',
'util/worker_pool.cc',
], 'tool': 'cxx', 'include_dirs': []},
}
executables = {
'gn': {'sources': [ 'tools/gn/gn_main.cc' ],
'tool': 'cxx', 'include_dirs': [], 'libs': []},
'gn_unittests': { 'sources': [
'tools/gn/action_target_generator_unittest.cc',
'tools/gn/analyzer_unittest.cc',
'tools/gn/args_unittest.cc',
'tools/gn/builder_unittest.cc',
'tools/gn/c_include_iterator_unittest.cc',
'tools/gn/command_format_unittest.cc',
'tools/gn/compile_commands_writer_unittest.cc',
'tools/gn/config_unittest.cc',
'tools/gn/config_values_extractors_unittest.cc',
'tools/gn/escape_unittest.cc',
'tools/gn/exec_process_unittest.cc',
'tools/gn/filesystem_utils_unittest.cc',
'tools/gn/function_foreach_unittest.cc',
'tools/gn/function_forward_variables_from_unittest.cc',
'tools/gn/function_get_label_info_unittest.cc',
'tools/gn/function_get_path_info_unittest.cc',
'tools/gn/function_get_target_outputs_unittest.cc',
'tools/gn/function_process_file_template_unittest.cc',
'tools/gn/function_rebase_path_unittest.cc',
'tools/gn/function_template_unittest.cc',
'tools/gn/function_toolchain_unittest.cc',
'tools/gn/function_write_file_unittest.cc',
'tools/gn/functions_target_unittest.cc',
'tools/gn/functions_unittest.cc',
'tools/gn/header_checker_unittest.cc',
'tools/gn/inherited_libraries_unittest.cc',
'tools/gn/input_conversion_unittest.cc',
'tools/gn/label_pattern_unittest.cc',
'tools/gn/label_unittest.cc',
'tools/gn/loader_unittest.cc',
'tools/gn/metadata_unittest.cc',
'tools/gn/metadata_walk_unittest.cc',
'tools/gn/ninja_action_target_writer_unittest.cc',
'tools/gn/ninja_binary_target_writer_unittest.cc',
'tools/gn/ninja_build_writer_unittest.cc',
'tools/gn/ninja_bundle_data_target_writer_unittest.cc',
'tools/gn/ninja_copy_target_writer_unittest.cc',
'tools/gn/ninja_create_bundle_target_writer_unittest.cc',
'tools/gn/ninja_generated_file_target_writer_unittest.cc',
'tools/gn/ninja_group_target_writer_unittest.cc',
'tools/gn/ninja_target_writer_unittest.cc',
'tools/gn/ninja_toolchain_writer_unittest.cc',
'tools/gn/operators_unittest.cc',
'tools/gn/output_conversion_unittest.cc',
'tools/gn/parse_tree_unittest.cc',
'tools/gn/parser_unittest.cc',
'tools/gn/path_output_unittest.cc',
'tools/gn/pattern_unittest.cc',
'tools/gn/runtime_deps_unittest.cc',
'tools/gn/scope_per_file_provider_unittest.cc',
'tools/gn/scope_unittest.cc',
'tools/gn/setup_unittest.cc',
'tools/gn/source_dir_unittest.cc',
'tools/gn/source_file_unittest.cc',
'tools/gn/string_utils_unittest.cc',
'tools/gn/substitution_pattern_unittest.cc',
'tools/gn/substitution_writer_unittest.cc',
'tools/gn/target_unittest.cc',
'tools/gn/template_unittest.cc',
'tools/gn/test_with_scheduler.cc',
'tools/gn/test_with_scope.cc',
'tools/gn/tokenizer_unittest.cc',
'tools/gn/unique_vector_unittest.cc',
'tools/gn/value_unittest.cc',
'tools/gn/visibility_unittest.cc',
'tools/gn/visual_studio_utils_unittest.cc',
'tools/gn/visual_studio_writer_unittest.cc',
'tools/gn/xcode_object_unittest.cc',
'tools/gn/xml_element_writer_unittest.cc',
'util/test/gn_test.cc',
], 'tool': 'cxx', 'include_dirs': [], 'libs': []},
}
if platform.is_posix():
static_libraries['base']['sources'].extend([
'base/files/file_enumerator_posix.cc',
'base/files/file_posix.cc',
'base/files/file_util_posix.cc',
'base/posix/file_descriptor_shuffle.cc',
'base/posix/safe_strerror.cc',
'base/strings/string16.cc',
])
if platform.is_windows():
static_libraries['base']['sources'].extend([
'base/files/file_enumerator_win.cc',
'base/files/file_util_win.cc',
'base/files/file_win.cc',
'base/win/registry.cc',
'base/win/scoped_handle.cc',
'base/win/scoped_process_information.cc',
])
libs.extend([
'advapi32.lib',
'dbghelp.lib',
'kernel32.lib',
'ole32.lib',
'shell32.lib',
'user32.lib',
'userenv.lib',
'version.lib',
'winmm.lib',
'ws2_32.lib',
'Shlwapi.lib',
])
# we just build static libraries that GN needs
executables['gn']['libs'].extend(static_libraries.keys())
executables['gn_unittests']['libs'].extend(static_libraries.keys())
WriteGenericNinja(path, static_libraries, executables, cc, cxx, ar, ld,
platform, host, options, cflags, cflags_cc, ldflags,
libflags, include_dirs, libs)
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))