mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-19 16:25:38 +00:00
4bb0df12f2
After a C++ language version bump, It's possible to wind up in situations where we are using a new enough compiler version, but the libstdc++ version in use is not new enough to support new language features: self-compiled clang with system libraries, clang from `mach bootstrap` prior to C++ language version bump (and thus including a new libstdc++ with the boostrapped clang), etc. Previously, such a situation would mean that things would work fine, and then start breaking as soon as new library features started to be used. Let's try to catch the problem earlier, when the update happens, by verifying that the libstdc++ version is at least as new as the GCC version we're requiring. Differential Revision: https://phabricator.services.mozilla.com/D57516 --HG-- extra : moz-landing-system : lando
2460 lines
84 KiB
Python
Executable File
2460 lines
84 KiB
Python
Executable File
# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
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# vim: set filetype=python:
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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imply_option('--enable-release', mozilla_official)
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imply_option('--enable-release', depends_if('MOZ_AUTOMATION')(lambda x: True))
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js_option('--enable-release',
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default=milestone.is_release_or_beta,
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help='{Build|Do not build} with more conservative, release '
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'engineering-oriented options.{ This may slow down builds.|}')
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@depends('--enable-release')
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def developer_options(value):
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if not value:
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return True
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add_old_configure_assignment('DEVELOPER_OPTIONS', developer_options)
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set_config('DEVELOPER_OPTIONS', developer_options)
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# Code optimization
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# ==============================================================
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js_option('--disable-optimize',
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nargs='?',
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help='Disable optimizations via compiler flags')
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@depends('--enable-optimize', '--help')
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def moz_optimize(option, _):
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flags = None
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if len(option):
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val = '2'
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flags = option[0]
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elif option:
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val = '1'
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else:
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val = None
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return namespace(
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optimize=val,
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flags=flags,
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)
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set_config('MOZ_OPTIMIZE', moz_optimize.optimize)
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add_old_configure_assignment('MOZ_OPTIMIZE', moz_optimize.optimize)
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add_old_configure_assignment('MOZ_CONFIGURE_OPTIMIZE_FLAGS', moz_optimize.flags)
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# yasm detection
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# ==============================================================
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yasm = check_prog('YASM', ['yasm'], allow_missing=True)
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@depends_if(yasm)
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@checking('yasm version')
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def yasm_version(yasm):
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version = check_cmd_output(
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yasm, '--version',
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onerror=lambda: die('Failed to get yasm version.')
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).splitlines()[0].split()[1]
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return Version(version)
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@depends(yasm, target)
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def yasm_asflags(yasm, target):
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if yasm:
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asflags = {
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('OSX', 'x86'): ['-f', 'macho32'],
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('OSX', 'x86_64'): ['-f', 'macho64'],
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('WINNT', 'x86'): ['-f', 'win32'],
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('WINNT', 'x86_64'): ['-f', 'x64'],
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}.get((target.os, target.cpu), None)
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if asflags is None:
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# We're assuming every x86 platform we support that's
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# not Windows or Mac is ELF.
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if target.cpu == 'x86':
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asflags = ['-f', 'elf32']
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elif target.cpu == 'x86_64':
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asflags = ['-f', 'elf64']
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if asflags:
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asflags += ['-rnasm', '-pnasm']
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return asflags
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set_config('YASM_ASFLAGS', yasm_asflags)
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# Android NDK
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# ==============================================================
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@depends('--disable-compile-environment', target)
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def compiling_android(compile_env, target):
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return compile_env and target.os == 'Android'
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include('android-ndk.configure', when=compiling_android)
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with only_when(target_is_osx):
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# MacOS deployment target version
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# ==============================================================
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# This needs to happen before any compilation test is done.
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option('--enable-macos-target', env='MACOSX_DEPLOYMENT_TARGET', nargs=1,
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default='10.9', help='Set the minimum MacOS version needed at runtime')
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@depends('--enable-macos-target')
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@imports(_from='os', _import='environ')
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def macos_target(value):
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if value:
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# Ensure every compiler process we spawn uses this value.
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environ['MACOSX_DEPLOYMENT_TARGET'] = value[0]
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return value[0]
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set_config('MACOSX_DEPLOYMENT_TARGET', macos_target)
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add_old_configure_assignment('MACOSX_DEPLOYMENT_TARGET', macos_target)
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@depends(host)
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def host_is_osx(host):
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if host.os == 'OSX':
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return True
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with only_when(host_is_osx | target_is_osx):
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# MacOS SDK
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# =========
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js_option('--with-macos-sdk', env='MACOS_SDK_DIR', nargs=1,
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help='Location of platform SDK to use')
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@depends('--with-macos-sdk', host)
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@imports(_from='os.path', _import='isdir')
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@imports(_from='biplist', _import='readPlist')
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def macos_sdk(sdk, host):
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sdk_min_version = Version('10.11')
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sdk_max_version = Version('10.14')
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if sdk:
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sdk = sdk[0]
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elif host.os == 'OSX':
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sdk = check_cmd_output('xcrun', '--show-sdk-path', onerror=lambda: '').rstrip()
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if not sdk:
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die('Could not find the macOS SDK. Please use --with-macos-sdk to give '
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'the path to a macOS SDK.')
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else:
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die('Need a macOS SDK when targeting macOS. Please use --with-macos-sdk '
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'to give the path to a macOS SDK.')
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if not isdir(sdk):
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die('SDK not found in %s. When using --with-macos-sdk, you must specify a '
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'valid SDK. SDKs are installed when the optional cross-development '
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'tools are selected during the Xcode/Developer Tools installation.'
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% sdk)
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obj = readPlist(os.path.join(sdk, 'SDKSettings.plist'))
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if not obj:
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die('Error parsing SDKSettings.plist in the SDK directory: %s' % sdk)
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if 'Version' not in obj:
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die('Error finding Version information in SDKSettings.plist from the SDK: %s' % sdk)
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version = Version(obj['Version'])
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if version < sdk_min_version:
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die('SDK version "%s" is too old. Please upgrade to at least %s. '
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'You may need to point to it using --with-macos-sdk=<path> in your '
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'mozconfig. Various SDK versions are available from '
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'https://github.com/phracker/MacOSX-SDKs' % (version, sdk_min_version))
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if version > sdk_max_version:
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die('SDK version "%s" is unsupported. Please downgrade to version '
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'%s. You may need to point to it using --with-macos-sdk=<path> in '
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'your mozconfig. Various SDK versions are available from '
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'https://github.com/phracker/MacOSX-SDKs' % (version, sdk_max_version))
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return sdk
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set_config('MACOS_SDK_DIR', macos_sdk)
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with only_when(target_is_osx):
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with only_when(cross_compiling):
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option('--with-macos-private-frameworks',
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env="MACOS_PRIVATE_FRAMEWORKS_DIR", nargs=1,
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help='Location of private frameworks to use')
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@depends_if('--with-macos-private-frameworks')
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@imports(_from='os.path', _import='isdir')
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def macos_private_frameworks(value):
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if value and not isdir(value[0]):
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die('PrivateFrameworks not found not found in %s. When using '
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'--with-macos-private-frameworks, you must specify a valid '
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'directory', value[0])
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return value[0]
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@depends(macos_private_frameworks)
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def macos_private_frameworks(value):
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if value:
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return value
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return '/System/Library/PrivateFrameworks'
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set_config('MACOS_PRIVATE_FRAMEWORKS_DIR', macos_private_frameworks)
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# Compiler wrappers
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# ==============================================================
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# Normally, we'd use js_option and automatically have those variables
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# propagated to js/src, but things are complicated by possible additional
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# wrappers in CC/CXX, and by other subconfigures that do not handle those
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# options and do need CC/CXX altered.
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option('--with-compiler-wrapper', env='COMPILER_WRAPPER', nargs=1,
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help='Enable compiling with wrappers such as distcc and ccache')
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js_option('--with-ccache', env='CCACHE', nargs='?',
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help='Enable compiling with ccache')
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@depends_if('--with-ccache')
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def ccache(value):
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if len(value):
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return value
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# If --with-ccache was given without an explicit value, we default to
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# 'ccache'.
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return 'ccache'
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ccache = check_prog('CCACHE', progs=(), input=ccache)
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js_option(env='CCACHE_PREFIX',
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nargs=1,
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help='Compiler prefix to use when using ccache')
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ccache_prefix = depends_if('CCACHE_PREFIX')(lambda prefix: prefix[0])
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set_config('CCACHE_PREFIX', ccache_prefix)
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# Distinguish ccache from sccache.
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@depends_if(ccache)
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def ccache_is_sccache(ccache):
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return check_cmd_output(ccache, '--version').startswith('sccache')
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@depends(ccache, ccache_is_sccache)
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def using_ccache(ccache, ccache_is_sccache):
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return ccache and not ccache_is_sccache
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@depends_if(ccache, ccache_is_sccache)
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def using_sccache(ccache, ccache_is_sccache):
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return ccache and ccache_is_sccache
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js_option(env='RUSTC_WRAPPER', nargs=1,
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help='Wrap rust compilation with given tool')
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@depends(ccache, ccache_is_sccache, 'RUSTC_WRAPPER')
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@imports(_from='textwrap', _import='dedent')
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@imports('os')
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def check_sccache_version(ccache, ccache_is_sccache, rustc_wrapper):
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sccache_min_version = Version('0.2.12')
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def check_version(path):
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out = check_cmd_output(path, '--version')
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version = Version(out.rstrip().split()[-1])
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if version < sccache_min_version:
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die(dedent('''\
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sccache %s or later is required. sccache in use at %s has
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version %s.
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Please upgrade or acquire a new version with |./mach bootstrap|.
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'''), sccache_min_version, path, version)
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if ccache and ccache_is_sccache:
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check_version(ccache)
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if (rustc_wrapper and
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(os.path.splitext(os.path.basename(rustc_wrapper[0]))[0].lower() ==
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'sccache')):
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check_version(rustc_wrapper[0])
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set_config('MOZ_USING_CCACHE', using_ccache)
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set_config('MOZ_USING_SCCACHE', using_sccache)
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option(env='SCCACHE_VERBOSE_STATS',
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help='Print verbose sccache stats after build')
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@depends(using_sccache, 'SCCACHE_VERBOSE_STATS')
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def sccache_verbose_stats(using_sccache, verbose_stats):
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return using_sccache and bool(verbose_stats)
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set_config('SCCACHE_VERBOSE_STATS', sccache_verbose_stats)
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@depends('--with-compiler-wrapper', ccache)
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@imports(_from='mozbuild.shellutil', _import='split', _as='shell_split')
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def compiler_wrapper(wrapper, ccache):
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if wrapper:
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raw_wrapper = wrapper[0]
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wrapper = shell_split(raw_wrapper)
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wrapper_program = find_program(wrapper[0])
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if not wrapper_program:
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die('Cannot find `%s` from the given compiler wrapper `%s`',
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wrapper[0], raw_wrapper)
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wrapper[0] = wrapper_program
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if ccache:
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if wrapper:
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return tuple([ccache] + wrapper)
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else:
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return (ccache,)
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elif wrapper:
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return tuple(wrapper)
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@depends_if(compiler_wrapper)
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def using_compiler_wrapper(compiler_wrapper):
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return True
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set_config('MOZ_USING_COMPILER_WRAPPER', using_compiler_wrapper)
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# GC rooting and hazard analysis.
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# ==============================================================
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option(env='MOZ_HAZARD', help='Build for the GC rooting hazard analysis')
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@depends('MOZ_HAZARD')
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def hazard_analysis(value):
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if value:
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return True
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set_config('MOZ_HAZARD', hazard_analysis)
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# Cross-compilation related things.
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# ==============================================================
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js_option('--with-toolchain-prefix', env='TOOLCHAIN_PREFIX', nargs=1,
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help='Prefix for the target toolchain')
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@depends('--with-toolchain-prefix', target, cross_compiling)
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def toolchain_prefix(value, target, cross_compiling):
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if value:
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return tuple(value)
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if cross_compiling:
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return ('%s-' % target.toolchain, '%s-' % target.alias)
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@depends(toolchain_prefix, target)
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def first_toolchain_prefix(toolchain_prefix, target):
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# Pass TOOLCHAIN_PREFIX down to the build system if it was given from the
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# command line/environment (in which case there's only one value in the tuple),
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# or when cross-compiling for Android or OSX.
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if toolchain_prefix and (target.os in ('Android', 'OSX') or len(toolchain_prefix) == 1):
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return toolchain_prefix[0]
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set_config('TOOLCHAIN_PREFIX', first_toolchain_prefix)
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add_old_configure_assignment('TOOLCHAIN_PREFIX', first_toolchain_prefix)
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# Compilers
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# ==============================================================
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include('compilers-util.configure')
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def try_preprocess(compiler, language, source):
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return try_invoke_compiler(compiler, language, source, ['-E'])
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@imports(_from='mozbuild.configure.constants', _import='CompilerType')
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@imports(_from='mozbuild.configure.constants',
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_import='CPU_preprocessor_checks')
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@imports(_from='mozbuild.configure.constants',
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_import='kernel_preprocessor_checks')
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@imports(_from='mozbuild.configure.constants',
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_import='OS_preprocessor_checks')
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@imports(_from='six', _import='iteritems')
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@imports(_from='textwrap', _import='dedent')
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@imports(_from='__builtin__', _import='Exception')
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def get_compiler_info(compiler, language):
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'''Returns information about the given `compiler` (command line in the
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form of a list or tuple), in the given `language`.
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The returned information includes:
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- the compiler type (clang-cl, clang or gcc)
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- the compiler version
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- the compiler supported language
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- the compiler supported language version
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'''
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# Note: We'd normally do a version check for clang, but versions of clang
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# in Xcode have a completely different versioning scheme despite exposing
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# the version with the same defines.
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# So instead, we make things such that the version is missing when the
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# clang used is below the minimum supported version (currently clang 5.0).
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# We then only include the version information when the compiler matches
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# the feature check, so that an unsupported version of clang would have
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# no version number.
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check = dedent('''\
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#if defined(_MSC_VER) && defined(__clang__) && defined(_MT)
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%COMPILER "clang-cl"
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%VERSION __clang_major__.__clang_minor__.__clang_patchlevel__
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#elif defined(__clang__)
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%COMPILER "clang"
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# if __has_warning("-Wunguarded-availability")
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%VERSION __clang_major__.__clang_minor__.__clang_patchlevel__
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# endif
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#elif defined(__GNUC__)
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%COMPILER "gcc"
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%VERSION __GNUC__.__GNUC_MINOR__.__GNUC_PATCHLEVEL__
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#endif
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#if __cplusplus
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%cplusplus __cplusplus
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#elif __STDC_VERSION__
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%STDC_VERSION __STDC_VERSION__
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#endif
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''')
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# While we're doing some preprocessing, we might as well do some more
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# preprocessor-based tests at the same time, to check the toolchain
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# matches what we want.
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for name, preprocessor_checks in (
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('CPU', CPU_preprocessor_checks),
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('KERNEL', kernel_preprocessor_checks),
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('OS', OS_preprocessor_checks),
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):
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for n, (value, condition) in enumerate(iteritems(preprocessor_checks)):
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check += dedent('''\
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#%(if)s %(condition)s
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%%%(name)s "%(value)s"
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''' % {
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'if': 'elif' if n else 'if',
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'condition': condition,
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'name': name,
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'value': value,
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})
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check += '#endif\n'
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# Also check for endianness. The advantage of living in modern times is
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# that all the modern compilers we support now have __BYTE_ORDER__ defined
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# by the preprocessor.
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check += dedent('''\
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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%ENDIANNESS "little"
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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%ENDIANNESS "big"
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#endif
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''')
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result = try_preprocess(compiler, language, check)
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|
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if not result:
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raise FatalCheckError(
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'Unknown compiler or compiler not supported.')
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# Metadata emitted by preprocessors such as GCC with LANG=ja_JP.utf-8 may
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# have non-ASCII characters. Treat the output as bytearray.
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data = {}
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for line in result.splitlines():
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if line.startswith('%'):
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k, _, v = line.partition(' ')
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k = k.lstrip('%')
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data[k] = v.replace(' ', '').lstrip('"').rstrip('"')
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log.debug('%s = %s', k, data[k])
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try:
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type = CompilerType(data['COMPILER'])
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except Exception:
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raise FatalCheckError(
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'Unknown compiler or compiler not supported.')
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cplusplus = int(data.get('cplusplus', '0L').rstrip('L'))
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stdc_version = int(data.get('STDC_VERSION', '0L').rstrip('L'))
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|
|
version = data.get('VERSION')
|
|
if version:
|
|
version = Version(version)
|
|
|
|
return namespace(
|
|
type=type,
|
|
version=version,
|
|
cpu=data.get('CPU'),
|
|
kernel=data.get('KERNEL'),
|
|
endianness=data.get('ENDIANNESS'),
|
|
os=data.get('OS'),
|
|
language='C++' if cplusplus else 'C',
|
|
language_version=cplusplus if cplusplus else stdc_version,
|
|
)
|
|
|
|
|
|
def same_arch_different_bits():
|
|
return (
|
|
('x86', 'x86_64'),
|
|
('ppc', 'ppc64'),
|
|
('sparc', 'sparc64'),
|
|
)
|
|
|
|
|
|
@imports(_from='mozbuild.shellutil', _import='quote')
|
|
@imports(_from='mozbuild.configure.constants',
|
|
_import='OS_preprocessor_checks')
|
|
def check_compiler(compiler, language, target):
|
|
info = get_compiler_info(compiler, language)
|
|
|
|
flags = []
|
|
|
|
# Check language standards
|
|
# --------------------------------------------------------------------
|
|
if language != info.language:
|
|
raise FatalCheckError(
|
|
'`%s` is not a %s compiler.' % (quote(*compiler), language))
|
|
|
|
# Note: We do a strict version check because there sometimes are backwards
|
|
# incompatible changes in the standard, and not all code that compiles as
|
|
# C99 compiles as e.g. C11 (as of writing, this is true of libnestegg, for
|
|
# example)
|
|
if info.language == 'C' and info.language_version != 199901:
|
|
if info.type == 'clang-cl':
|
|
flags.append('-Xclang')
|
|
flags.append('-std=gnu99')
|
|
|
|
cxx17_version = 201703
|
|
if info.language == 'C++':
|
|
if info.language_version != cxx17_version:
|
|
# MSVC headers include C++17 features, but don't guard them
|
|
# with appropriate checks.
|
|
if info.type == 'clang-cl':
|
|
flags.append('-Xclang')
|
|
flags.append('-std=c++17')
|
|
else:
|
|
flags.append('-std=gnu++17')
|
|
|
|
# Check compiler target
|
|
# --------------------------------------------------------------------
|
|
has_target = False
|
|
if info.type == 'clang':
|
|
if not info.kernel or info.kernel != target.kernel or \
|
|
not info.endianness or info.endianness != target.endianness:
|
|
flags.append('--target=%s' % target.toolchain)
|
|
has_target = True
|
|
|
|
# Add target flag when there is an OS mismatch (e.g. building for Android on
|
|
# Linux). However, only do this if the target OS is in our whitelist, to
|
|
# keep things the same on other platforms.
|
|
elif target.os in OS_preprocessor_checks and (
|
|
not info.os or info.os != target.os):
|
|
flags.append('--target=%s' % target.toolchain)
|
|
has_target = True
|
|
|
|
if not has_target and (not info.cpu or info.cpu != target.cpu):
|
|
same_arch = same_arch_different_bits()
|
|
if (target.cpu, info.cpu) in same_arch:
|
|
flags.append('-m32')
|
|
elif (info.cpu, target.cpu) in same_arch:
|
|
flags.append('-m64')
|
|
elif info.type == 'clang-cl' and target.cpu == 'aarch64':
|
|
flags.append('--target=%s' % target.toolchain)
|
|
elif info.type == 'clang':
|
|
flags.append('--target=%s' % target.toolchain)
|
|
|
|
return namespace(
|
|
type=info.type,
|
|
version=info.version,
|
|
target_cpu=info.cpu,
|
|
target_kernel=info.kernel,
|
|
target_endianness=info.endianness,
|
|
target_os=info.os,
|
|
flags=flags,
|
|
)
|
|
|
|
|
|
@imports(_from='__builtin__', _import='open')
|
|
@imports('json')
|
|
@imports('os')
|
|
def get_vc_paths(topsrcdir):
|
|
def vswhere(args):
|
|
program_files = (os.environ.get('PROGRAMFILES(X86)') or
|
|
os.environ.get('PROGRAMFILES'))
|
|
if not program_files:
|
|
return []
|
|
vswhere = os.path.join(program_files, 'Microsoft Visual Studio',
|
|
'Installer', 'vswhere.exe')
|
|
if not os.path.exists(vswhere):
|
|
return []
|
|
return json.loads(check_cmd_output(vswhere, '-format', 'json', *args))
|
|
|
|
for install in vswhere(['-products', '*', '-requires', 'Microsoft.VisualStudio.Component.VC.Tools.x86.x64']):
|
|
path = install['installationPath']
|
|
tools_version = open(os.path.join(
|
|
path, r'VC\Auxiliary\Build\Microsoft.VCToolsVersion.default.txt'), 'rb').read().strip()
|
|
tools_path = os.path.join(
|
|
path, r'VC\Tools\MSVC', tools_version)
|
|
yield (Version(install['installationVersion']), tools_path)
|
|
|
|
|
|
@depends(host)
|
|
def host_is_windows(host):
|
|
if host.kernel == 'WINNT':
|
|
return True
|
|
|
|
|
|
js_option('--with-visual-studio-version', nargs=1,
|
|
choices=('2017',), when=host_is_windows,
|
|
help='Select a specific Visual Studio version to use')
|
|
|
|
|
|
@depends('--with-visual-studio-version', when=host_is_windows)
|
|
def vs_major_version(value):
|
|
if value:
|
|
return {'2017': 15}[value[0]]
|
|
|
|
|
|
js_option(env='VC_PATH', nargs=1, when=host_is_windows,
|
|
help='Path to the Microsoft Visual C/C++ compiler')
|
|
|
|
|
|
@depends(host, vs_major_version, check_build_environment, 'VC_PATH',
|
|
'--with-visual-studio-version', when=host_is_windows)
|
|
@imports(_from='__builtin__', _import='sorted')
|
|
@imports(_from='operator', _import='itemgetter')
|
|
def vc_compiler_paths_for_version(host, vs_major_version, env, vc_path, vs_release_name):
|
|
if vc_path and vs_release_name:
|
|
die('VC_PATH and --with-visual-studio-version cannot be used together.')
|
|
if vc_path:
|
|
# Use an arbitrary version, it doesn't matter.
|
|
all_versions = [(Version('15'), vc_path[0])]
|
|
else:
|
|
all_versions = sorted(get_vc_paths(env.topsrcdir), key=itemgetter(0))
|
|
if not all_versions:
|
|
return
|
|
if vs_major_version:
|
|
versions = [d for (v, d) in all_versions if v.major ==
|
|
vs_major_version]
|
|
if not versions:
|
|
die('Visual Studio %s could not be found!' % vs_release_name)
|
|
path = versions[0]
|
|
else:
|
|
# Choose the newest version.
|
|
path = all_versions[-1][1]
|
|
host_dir = {
|
|
'x86_64': 'HostX64',
|
|
'x86': 'HostX86',
|
|
}.get(host.cpu)
|
|
if host_dir:
|
|
path = os.path.join(path, 'bin', host_dir)
|
|
return {
|
|
'x64': [os.path.join(path, 'x64')],
|
|
# The cross toolchains require DLLs from the native x64 toolchain.
|
|
'x86': [os.path.join(path, 'x86'), os.path.join(path, 'x64')],
|
|
'arm64': [os.path.join(path, 'arm64'), os.path.join(path, 'x64')],
|
|
}
|
|
|
|
|
|
@template
|
|
def vc_compiler_path_for(host_or_target):
|
|
@depends(host_or_target, vc_compiler_paths_for_version,
|
|
when=host_is_windows)
|
|
def vc_compiler_path(target, paths):
|
|
vc_target = {
|
|
'x86': 'x86',
|
|
'x86_64': 'x64',
|
|
'arm': 'arm',
|
|
'aarch64': 'arm64'
|
|
}.get(target.cpu)
|
|
if not paths:
|
|
return
|
|
return paths.get(vc_target)
|
|
return vc_compiler_path
|
|
|
|
|
|
vc_compiler_path = vc_compiler_path_for(target)
|
|
host_vc_compiler_path = vc_compiler_path_for(host)
|
|
|
|
|
|
@dependable
|
|
@imports('os')
|
|
@imports(_from='os', _import='environ')
|
|
def original_path():
|
|
return environ['PATH'].split(os.pathsep)
|
|
|
|
|
|
@template
|
|
def toolchain_search_path_for(host_or_target):
|
|
vc_path = {
|
|
host: host_vc_compiler_path,
|
|
target: vc_compiler_path,
|
|
}[host_or_target]
|
|
|
|
@depends(vc_path, original_path, developer_options, mozbuild_state_path)
|
|
@imports('os')
|
|
@imports(_from='os', _import='environ')
|
|
def toolchain_search_path(vc_compiler_path, original_path, developer_options,
|
|
mozbuild_state_path):
|
|
result = list(original_path)
|
|
|
|
if vc_compiler_path:
|
|
# The second item, if there is one, is necessary to have in $PATH for
|
|
# Windows to load the required DLLs from there.
|
|
if len(vc_compiler_path) > 1:
|
|
environ['PATH'] = os.pathsep.join(result + vc_compiler_path[1:])
|
|
|
|
# The first item is where the programs are going to be
|
|
result.append(vc_compiler_path[0])
|
|
|
|
# Also add in the location to which `mach bootstrap` or
|
|
# `mach artifact toolchain` installs clang, cbindgen, etc.
|
|
bootstrapped = [
|
|
os.path.join(mozbuild_state_path, *rest) for rest in (
|
|
['clang', 'bin'],
|
|
['cbindgen'],
|
|
['dump_syms'],
|
|
['nasm'],
|
|
['lucetc'],
|
|
)]
|
|
|
|
# Also add the rustup install directory for cargo/rustc.
|
|
rustup_path = os.path.expanduser(os.path.join('~', '.cargo', 'bin'))
|
|
result.append(rustup_path)
|
|
|
|
if developer_options:
|
|
return bootstrapped + result
|
|
return result + bootstrapped
|
|
return toolchain_search_path
|
|
|
|
|
|
toolchain_search_path = toolchain_search_path_for(target)
|
|
host_toolchain_search_path = toolchain_search_path_for(host)
|
|
|
|
|
|
# As a workaround until bug 1516228 and bug 1516253 are fixed, set the PATH
|
|
# variable for the build to contain the toolchain search path.
|
|
@depends(toolchain_search_path, host_toolchain_search_path)
|
|
@imports('os')
|
|
@imports(_from='os', _import='environ')
|
|
def altered_path(toolchain_search_path, host_toolchain_search_path):
|
|
path = environ['PATH'].split(os.pathsep)
|
|
altered_path = list(toolchain_search_path)
|
|
for p in host_toolchain_search_path:
|
|
if p not in altered_path:
|
|
altered_path.append(p)
|
|
for p in path:
|
|
if p not in altered_path:
|
|
altered_path.append(p)
|
|
return os.pathsep.join(altered_path)
|
|
|
|
|
|
set_config('PATH', altered_path)
|
|
|
|
|
|
@template
|
|
def default_c_compilers(host_or_target, other_c_compiler=None):
|
|
'''Template defining the set of default C compilers for the host and
|
|
target platforms.
|
|
`host_or_target` is either `host` or `target` (the @depends functions
|
|
from init.configure.
|
|
`other_c_compiler` is the `target` C compiler when `host_or_target` is `host`.
|
|
'''
|
|
assert host_or_target in {host, target}
|
|
|
|
other_c_compiler = () if other_c_compiler is None else (other_c_compiler,)
|
|
|
|
@depends(host_or_target, target, toolchain_prefix, *other_c_compiler)
|
|
def default_c_compilers(host_or_target, target, toolchain_prefix,
|
|
*other_c_compiler):
|
|
if host_or_target.kernel == 'WINNT':
|
|
supported = types = ('clang-cl', 'gcc', 'clang')
|
|
elif host_or_target.kernel == 'Darwin':
|
|
types = ('clang',)
|
|
supported = ('clang', 'gcc')
|
|
else:
|
|
supported = types = ('clang', 'gcc')
|
|
|
|
info = other_c_compiler[0] if other_c_compiler else None
|
|
if info and info.type in supported:
|
|
# When getting default C compilers for the host, we prioritize the
|
|
# same compiler as the target C compiler.
|
|
prioritized = info.compiler
|
|
if info.type == 'gcc':
|
|
same_arch = same_arch_different_bits()
|
|
if (target.cpu != host_or_target.cpu and
|
|
(target.cpu, host_or_target.cpu) not in same_arch and
|
|
(host_or_target.cpu, target.cpu) not in same_arch):
|
|
# If the target C compiler is GCC, and it can't be used with
|
|
# -m32/-m64 for the host, it's probably toolchain-prefixed,
|
|
# so we prioritize a raw 'gcc' instead.
|
|
prioritized = info.type
|
|
|
|
types = [prioritized] + [t for t in types if t != info.type]
|
|
|
|
gcc = ('gcc',)
|
|
if toolchain_prefix and host_or_target is target:
|
|
gcc = tuple('%sgcc' % p for p in toolchain_prefix) + gcc
|
|
|
|
result = []
|
|
for type in types:
|
|
if type == 'gcc':
|
|
result.extend(gcc)
|
|
else:
|
|
result.append(type)
|
|
|
|
return tuple(result)
|
|
|
|
return default_c_compilers
|
|
|
|
|
|
@template
|
|
def default_cxx_compilers(c_compiler, other_c_compiler=None, other_cxx_compiler=None):
|
|
'''Template defining the set of default C++ compilers for the host and
|
|
target platforms.
|
|
`c_compiler` is the @depends function returning a Compiler instance for
|
|
the desired platform.
|
|
|
|
Because the build system expects the C and C++ compilers to be from the
|
|
same compiler suite, we derive the default C++ compilers from the C
|
|
compiler that was found if none was provided.
|
|
|
|
We also factor in the target C++ compiler when getting the default host
|
|
C++ compiler, using the target C++ compiler if the host and target C
|
|
compilers are the same.
|
|
'''
|
|
|
|
assert (other_c_compiler is None) == (other_cxx_compiler is None)
|
|
if other_c_compiler is not None:
|
|
other_compilers = (other_c_compiler, other_cxx_compiler)
|
|
else:
|
|
other_compilers = ()
|
|
|
|
@depends(c_compiler, *other_compilers)
|
|
def default_cxx_compilers(c_compiler, *other_compilers):
|
|
if other_compilers:
|
|
other_c_compiler, other_cxx_compiler = other_compilers
|
|
if other_c_compiler.compiler == c_compiler.compiler:
|
|
return (other_cxx_compiler.compiler,)
|
|
|
|
dir = os.path.dirname(c_compiler.compiler)
|
|
file = os.path.basename(c_compiler.compiler)
|
|
|
|
if c_compiler.type == 'gcc':
|
|
return (os.path.join(dir, file.replace('gcc', 'g++')),)
|
|
|
|
if c_compiler.type == 'clang':
|
|
return (os.path.join(dir, file.replace('clang', 'clang++')),)
|
|
|
|
return (c_compiler.compiler,)
|
|
|
|
return default_cxx_compilers
|
|
|
|
|
|
@template
|
|
def provided_program(env_var, when=None):
|
|
'''Template handling cases where a program can be specified either as a
|
|
path or as a path with applicable arguments.
|
|
'''
|
|
|
|
@depends_if(env_var, when=when)
|
|
@imports(_from='itertools', _import='takewhile')
|
|
@imports(_from='mozbuild.shellutil', _import='split', _as='shell_split')
|
|
def provided(cmd):
|
|
# Assume the first dash-prefixed item (and any subsequent items) are
|
|
# command-line options, the item before the dash-prefixed item is
|
|
# the program we're looking for, and anything before that is a wrapper
|
|
# of some kind (e.g. sccache).
|
|
cmd = shell_split(cmd[0])
|
|
|
|
without_flags = list(takewhile(lambda x: not x.startswith('-'), cmd))
|
|
|
|
return namespace(
|
|
wrapper=without_flags[:-1],
|
|
program=without_flags[-1],
|
|
flags=cmd[len(without_flags):],
|
|
)
|
|
|
|
return provided
|
|
|
|
|
|
def prepare_flags(host_or_target, macos_sdk):
|
|
if macos_sdk and host_or_target.os == 'OSX':
|
|
return ['-isysroot', macos_sdk]
|
|
return []
|
|
|
|
|
|
def minimum_gcc_version():
|
|
return Version('7.1.0')
|
|
|
|
|
|
@template
|
|
def compiler(language, host_or_target, c_compiler=None, other_compiler=None,
|
|
other_c_compiler=None):
|
|
'''Template handling the generic base checks for the compiler for the
|
|
given `language` on the given platform (`host_or_target`).
|
|
`host_or_target` is either `host` or `target` (the @depends functions
|
|
from init.configure.
|
|
When the language is 'C++', `c_compiler` is the result of the `compiler`
|
|
template for the language 'C' for the same `host_or_target`.
|
|
When `host_or_target` is `host`, `other_compiler` is the result of the
|
|
`compiler` template for the same `language` for `target`.
|
|
When `host_or_target` is `host` and the language is 'C++',
|
|
`other_c_compiler` is the result of the `compiler` template for the
|
|
language 'C' for `target`.
|
|
'''
|
|
assert host_or_target in {host, target}
|
|
assert language in ('C', 'C++')
|
|
assert language == 'C' or c_compiler is not None
|
|
assert host_or_target is target or other_compiler is not None
|
|
assert language == 'C' or host_or_target is target or \
|
|
other_c_compiler is not None
|
|
|
|
host_or_target_str = {
|
|
host: 'host',
|
|
target: 'target',
|
|
}[host_or_target]
|
|
|
|
var = {
|
|
('C', target): 'CC',
|
|
('C++', target): 'CXX',
|
|
('C', host): 'HOST_CC',
|
|
('C++', host): 'HOST_CXX',
|
|
}[language, host_or_target]
|
|
|
|
default_compilers = {
|
|
'C': lambda: default_c_compilers(host_or_target, other_compiler),
|
|
'C++': lambda: default_cxx_compilers(c_compiler, other_c_compiler, other_compiler),
|
|
}[language]()
|
|
|
|
what = 'the %s %s compiler' % (host_or_target_str, language)
|
|
|
|
option(env=var, nargs=1, help='Path to %s' % what)
|
|
|
|
# Handle the compiler given by the user through one of the CC/CXX/HOST_CC/
|
|
# HOST_CXX variables.
|
|
provided_compiler = provided_program(var)
|
|
|
|
search_path = {
|
|
host: host_toolchain_search_path,
|
|
target: toolchain_search_path,
|
|
}[host_or_target]
|
|
|
|
# Normally, we'd use `var` instead of `_var`, but the interaction with
|
|
# old-configure complicates things, and for now, we a) can't take the plain
|
|
# result from check_prog as CC/CXX/HOST_CC/HOST_CXX and b) have to let
|
|
# old-configure AC_SUBST it (because it's autoconf doing it, not us)
|
|
compiler = check_prog('_%s' % var, what=what, progs=default_compilers,
|
|
input=provided_compiler.program,
|
|
paths=search_path)
|
|
|
|
@depends(compiler, provided_compiler, compiler_wrapper, host_or_target, macos_sdk)
|
|
@checking('whether %s can be used' % what, lambda x: bool(x))
|
|
@imports(_from='mozbuild.shellutil', _import='quote')
|
|
def valid_compiler(compiler, provided_compiler, compiler_wrapper,
|
|
host_or_target, macos_sdk):
|
|
wrapper = list(compiler_wrapper or ())
|
|
flags = prepare_flags(host_or_target, macos_sdk)
|
|
if provided_compiler:
|
|
provided_wrapper = list(provided_compiler.wrapper)
|
|
# When doing a subconfigure, the compiler is set by old-configure
|
|
# and it contains the wrappers from --with-compiler-wrapper and
|
|
# --with-ccache.
|
|
if provided_wrapper[:len(wrapper)] == wrapper:
|
|
provided_wrapper = provided_wrapper[len(wrapper):]
|
|
wrapper.extend(provided_wrapper)
|
|
flags.extend(provided_compiler.flags)
|
|
|
|
info = check_compiler(wrapper + [compiler] + flags, language,
|
|
host_or_target)
|
|
|
|
# Check that the additional flags we got are enough to not require any
|
|
# more flags. If we get an exception, just ignore it; it's liable to be
|
|
# invalid command-line flags, which means the compiler we're checking
|
|
# doesn't support those command-line flags and will fail one or more of
|
|
# the checks below.
|
|
try:
|
|
if info.flags:
|
|
flags += info.flags
|
|
info = check_compiler(wrapper + [compiler] + flags, language,
|
|
host_or_target)
|
|
except FatalCheckError:
|
|
pass
|
|
|
|
if not info.target_cpu or info.target_cpu != host_or_target.cpu:
|
|
raise FatalCheckError(
|
|
'%s %s compiler target CPU (%s) does not match --%s CPU (%s)'
|
|
% (host_or_target_str.capitalize(), language,
|
|
info.target_cpu or 'unknown', host_or_target_str,
|
|
host_or_target.raw_cpu))
|
|
|
|
if not info.target_kernel or (info.target_kernel !=
|
|
host_or_target.kernel):
|
|
raise FatalCheckError(
|
|
'%s %s compiler target kernel (%s) does not match --%s kernel (%s)'
|
|
% (host_or_target_str.capitalize(), language,
|
|
info.target_kernel or 'unknown', host_or_target_str,
|
|
host_or_target.kernel))
|
|
|
|
if not info.target_endianness or (info.target_endianness !=
|
|
host_or_target.endianness):
|
|
raise FatalCheckError(
|
|
'%s %s compiler target endianness (%s) does not match --%s '
|
|
'endianness (%s)'
|
|
% (host_or_target_str.capitalize(), language,
|
|
info.target_endianness or 'unknown', host_or_target_str,
|
|
host_or_target.endianness))
|
|
|
|
# Compiler version checks
|
|
# ===================================================
|
|
# Check the compiler version here instead of in `compiler_version` so
|
|
# that the `checking` message doesn't pretend the compiler can be used
|
|
# to then bail out one line later.
|
|
if info.type == 'gcc':
|
|
if host_or_target.os == 'Android':
|
|
raise FatalCheckError('GCC is not supported on Android.\n'
|
|
'Please use clang from the Android NDK instead.')
|
|
gcc_version = minimum_gcc_version()
|
|
if info.version < gcc_version:
|
|
raise FatalCheckError(
|
|
'Only GCC %d.%d or newer is supported (found version %s).'
|
|
% (gcc_version.major, gcc_version.minor, info.version))
|
|
|
|
if info.type == 'clang-cl':
|
|
if info.version < '8.0.0':
|
|
raise FatalCheckError(
|
|
'Only clang-cl 8.0 or newer is supported (found version %s)'
|
|
% info.version)
|
|
|
|
# If you want to bump the version check here search for
|
|
# diagnose_if above, and see the associated comment.
|
|
if info.type == 'clang' and not info.version:
|
|
raise FatalCheckError(
|
|
'Only clang/llvm 5.0 or newer is supported.')
|
|
|
|
if info.flags:
|
|
raise FatalCheckError(
|
|
'Unknown compiler or compiler not supported.')
|
|
|
|
return namespace(
|
|
wrapper=wrapper,
|
|
compiler=compiler,
|
|
flags=flags,
|
|
type=info.type,
|
|
version=info.version,
|
|
language=language,
|
|
)
|
|
|
|
@depends(valid_compiler)
|
|
@checking('%s version' % what)
|
|
def compiler_version(compiler):
|
|
return compiler.version
|
|
|
|
if language == 'C++':
|
|
@depends(valid_compiler, c_compiler)
|
|
def valid_compiler(compiler, c_compiler):
|
|
if compiler.type != c_compiler.type:
|
|
die('The %s C compiler is %s, while the %s C++ compiler is '
|
|
'%s. Need to use the same compiler suite.',
|
|
host_or_target_str, c_compiler.type,
|
|
host_or_target_str, compiler.type)
|
|
|
|
if compiler.version != c_compiler.version:
|
|
die('The %s C compiler is version %s, while the %s C++ '
|
|
'compiler is version %s. Need to use the same compiler '
|
|
'version.',
|
|
host_or_target_str, c_compiler.version,
|
|
host_or_target_str, compiler.version)
|
|
return compiler
|
|
|
|
# Set CC/CXX/HOST_CC/HOST_CXX for old-configure, which needs the wrapper
|
|
# and the flags that were part of the user input for those variables to
|
|
# be provided.
|
|
add_old_configure_assignment(var, depends_if(valid_compiler)(
|
|
lambda x: list(x.wrapper) + [x.compiler] + list(x.flags)))
|
|
|
|
if host_or_target is target:
|
|
add_old_configure_assignment('ac_cv_prog_%s' % var, depends_if(valid_compiler)(
|
|
lambda x: list(x.wrapper) + [x.compiler] + list(x.flags)))
|
|
# We check that it works in python configure already.
|
|
add_old_configure_assignment('ac_cv_prog_%s_works' % var.lower(), 'yes')
|
|
add_old_configure_assignment(
|
|
'ac_cv_prog_%s_cross' % var.lower(),
|
|
depends(cross_compiling)(lambda x: 'yes' if x else 'no'))
|
|
gcc_like = depends(valid_compiler.type)(lambda x: 'yes' if x in ('gcc', 'clang') else 'no')
|
|
add_old_configure_assignment('ac_cv_prog_%s_g' % var.lower(), gcc_like)
|
|
if language == 'C':
|
|
add_old_configure_assignment('ac_cv_prog_gcc', gcc_like)
|
|
if language == 'C++':
|
|
add_old_configure_assignment('ac_cv_prog_gxx', gcc_like)
|
|
|
|
|
|
# Set CC_TYPE/CC_VERSION/HOST_CC_TYPE/HOST_CC_VERSION to allow
|
|
# old-configure to do some of its still existing checks.
|
|
if language == 'C':
|
|
set_config(
|
|
'%s_TYPE' % var, valid_compiler.type)
|
|
add_old_configure_assignment(
|
|
'%s_TYPE' % var, valid_compiler.type)
|
|
set_config(
|
|
'%s_VERSION' % var, depends(valid_compiler.version)(lambda v: str(v)))
|
|
|
|
valid_compiler = compiler_class(valid_compiler, host_or_target)
|
|
|
|
def compiler_error():
|
|
raise FatalCheckError('Failed compiling a simple %s source with %s'
|
|
% (language, what))
|
|
|
|
valid_compiler.try_compile(check_msg='%s works' % what,
|
|
onerror=compiler_error)
|
|
|
|
set_config('%s_BASE_FLAGS' % var, valid_compiler.flags)
|
|
|
|
# Set CPP/CXXCPP for both the build system and old-configure. We don't
|
|
# need to check this works for preprocessing, because we already relied
|
|
# on $CC -E/$CXX -E doing preprocessing work to validate the compiler
|
|
# in the first place.
|
|
if host_or_target is target:
|
|
pp_var = {
|
|
'C': 'CPP',
|
|
'C++': 'CXXCPP',
|
|
}[language]
|
|
|
|
preprocessor = depends_if(valid_compiler)(
|
|
lambda x: list(x.wrapper) + [x.compiler, '-E'] + list(x.flags))
|
|
|
|
set_config(pp_var, preprocessor)
|
|
add_old_configure_assignment(pp_var, preprocessor)
|
|
|
|
if language == 'C':
|
|
linker_var = {
|
|
target: 'LD',
|
|
host: 'HOST_LD',
|
|
}[host_or_target]
|
|
|
|
@deprecated_option(env=linker_var, nargs=1)
|
|
def linker(value):
|
|
if value:
|
|
return value[0]
|
|
|
|
@depends(linker)
|
|
def unused_linker(linker):
|
|
if linker:
|
|
log.warning('The value of %s is not used by this build system.'
|
|
% linker_var)
|
|
|
|
return valid_compiler
|
|
|
|
|
|
c_compiler = compiler('C', target)
|
|
cxx_compiler = compiler('C++', target, c_compiler=c_compiler)
|
|
host_c_compiler = compiler('C', host, other_compiler=c_compiler)
|
|
host_cxx_compiler = compiler('C++', host, c_compiler=host_c_compiler,
|
|
other_compiler=cxx_compiler,
|
|
other_c_compiler=c_compiler)
|
|
|
|
# Generic compiler-based conditions.
|
|
building_with_gcc = depends(c_compiler)(lambda info: info.type == 'gcc')
|
|
|
|
|
|
@depends(cxx_compiler, ccache_prefix)
|
|
@imports('os')
|
|
def cxx_is_icecream(info, ccache_prefix):
|
|
if (os.path.islink(info.compiler) and os.path.basename(
|
|
os.readlink(info.compiler)) == 'icecc'):
|
|
return True
|
|
if ccache_prefix and os.path.basename(ccache_prefix) == 'icecc':
|
|
return True
|
|
|
|
set_config('CXX_IS_ICECREAM', cxx_is_icecream)
|
|
|
|
|
|
@depends(c_compiler)
|
|
def msvs_version(info):
|
|
# clang-cl emulates the same version scheme as cl. And MSVS_VERSION needs to
|
|
# be set for GYP on Windows.
|
|
if info.type == 'clang-cl':
|
|
return '2017'
|
|
|
|
return ''
|
|
|
|
|
|
set_config('MSVS_VERSION', msvs_version)
|
|
|
|
include('compile-checks.configure')
|
|
include('arm.configure', when=depends(target.cpu)(lambda cpu: cpu == 'arm'))
|
|
|
|
|
|
@depends(host, host_os_kernel_major_version, target)
|
|
def needs_macos_sdk_headers_check(host, version, target):
|
|
# Only an issue on Mac OS X 10.14 (and probably above).
|
|
if host.kernel != 'Darwin' or target.kernel !='Darwin' or version < '18':
|
|
return
|
|
|
|
return True
|
|
|
|
|
|
@depends(cxx_compiler.try_run(header='#include_next <inttypes.h>',
|
|
check_msg='for macOS SDK headers',
|
|
when=needs_macos_sdk_headers_check),
|
|
when=needs_macos_sdk_headers_check)
|
|
def check_have_mac_10_14_sdk(value):
|
|
if value:
|
|
return
|
|
|
|
die('System inttypes.h not found. Please try running '
|
|
'`open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg` '
|
|
'and following the instructions to install the necessary headers')
|
|
|
|
|
|
@depends(have_64_bit,
|
|
try_compile(body='static_assert(sizeof(void *) == 8, "")',
|
|
check_msg='for 64-bit OS'))
|
|
def check_have_64_bit(have_64_bit, compiler_have_64_bit):
|
|
if have_64_bit != compiler_have_64_bit:
|
|
configure_error('The target compiler does not agree with configure '
|
|
'about the target bitness.')
|
|
|
|
|
|
@depends(cxx_compiler, target)
|
|
def needs_libstdcxx_newness_check(cxx_compiler, target):
|
|
# We only have to care about this on Linux and MinGW.
|
|
if cxx_compiler.type == 'clang-cl':
|
|
return
|
|
|
|
if target.kernel not in ('Linux', 'WINNT'):
|
|
return
|
|
|
|
if target.os == 'Android':
|
|
return
|
|
|
|
return True
|
|
|
|
|
|
def die_on_old_libstdcxx():
|
|
die('The libstdc++ in use is not new enough. Please run '
|
|
'./mach bootstrap to update your compiler, or update your system '
|
|
'libstdc++ installation.')
|
|
|
|
try_compile(includes=['cstddef'],
|
|
body='\n'.join([
|
|
# _GLIBCXX_RELEASE showed up in libstdc++ 7.
|
|
'#if defined(__GLIBCXX__) && !defined(_GLIBCXX_RELEASE)',
|
|
'# error libstdc++ not new enough',
|
|
'#endif',
|
|
'#if defined(_GLIBCXX_RELEASE)',
|
|
'# if _GLIBCXX_RELEASE < %d' % minimum_gcc_version().major,
|
|
'# error libstdc++ not new enough',
|
|
'# else',
|
|
' (void) 0',
|
|
'# endif',
|
|
'#endif',
|
|
]),
|
|
check_msg='for new enough STL headers from libstdc++',
|
|
when=needs_libstdcxx_newness_check,
|
|
onerror=die_on_old_libstdcxx)
|
|
|
|
|
|
@depends(c_compiler, target)
|
|
def default_debug_flags(compiler_info, target):
|
|
# Debug info is ON by default.
|
|
if compiler_info.type == 'clang-cl':
|
|
return '-Z7'
|
|
elif target.kernel == 'WINNT' and compiler_info.type == 'clang':
|
|
return '-g -gcodeview'
|
|
return '-g'
|
|
|
|
|
|
option(env='MOZ_DEBUG_FLAGS',
|
|
nargs=1,
|
|
help='Debug compiler flags')
|
|
|
|
imply_option('--enable-debug-symbols',
|
|
depends_if('--enable-debug')(lambda v: v))
|
|
|
|
js_option('--disable-debug-symbols',
|
|
nargs='?',
|
|
help='Disable debug symbols using the given compiler flags')
|
|
|
|
set_config('MOZ_DEBUG_SYMBOLS',
|
|
depends_if('--enable-debug-symbols')(lambda _: True))
|
|
|
|
|
|
@depends('MOZ_DEBUG_FLAGS', '--enable-debug-symbols', default_debug_flags)
|
|
def debug_flags(env_debug_flags, enable_debug_flags, default_debug_flags):
|
|
# If MOZ_DEBUG_FLAGS is set, and --enable-debug-symbols is set to a value,
|
|
# --enable-debug-symbols takes precedence. Note, the value of
|
|
# --enable-debug-symbols may be implied by --enable-debug.
|
|
if len(enable_debug_flags):
|
|
return enable_debug_flags[0]
|
|
if env_debug_flags:
|
|
return env_debug_flags[0]
|
|
return default_debug_flags
|
|
|
|
|
|
set_config('MOZ_DEBUG_FLAGS', debug_flags)
|
|
add_old_configure_assignment('MOZ_DEBUG_FLAGS', debug_flags)
|
|
|
|
|
|
@depends(c_compiler)
|
|
def color_cflags(info):
|
|
# We could test compiling with flags. By why incur the overhead when
|
|
# color support should always be present in a specific toolchain
|
|
# version?
|
|
|
|
# Code for auto-adding this flag to compiler invocations needs to
|
|
# determine if an existing flag isn't already present. That is likely
|
|
# using exact string matching on the returned value. So if the return
|
|
# value changes to e.g. "<x>=always", exact string match may fail and
|
|
# multiple color flags could be added. So examine downstream consumers
|
|
# before adding flags to return values.
|
|
if info.type == 'gcc':
|
|
return '-fdiagnostics-color'
|
|
elif info.type == 'clang':
|
|
return '-fcolor-diagnostics'
|
|
else:
|
|
return ''
|
|
|
|
|
|
set_config('COLOR_CFLAGS', color_cflags)
|
|
|
|
# Some standard library headers (notably bionic on Android) declare standard
|
|
# functions (e.g. getchar()) and also #define macros for those standard
|
|
# functions. libc++ deals with this by doing something like the following
|
|
# (explanatory comments added):
|
|
#
|
|
# #ifdef FUNC
|
|
# // Capture the definition of FUNC.
|
|
# inline _LIBCPP_INLINE_VISIBILITY int __libcpp_FUNC(...) { return FUNC(...); }
|
|
# #undef FUNC
|
|
# // Use a real inline definition.
|
|
# inline _LIBCPP_INLINE_VISIBILITY int FUNC(...) { return _libcpp_FUNC(...); }
|
|
# #endif
|
|
#
|
|
# _LIBCPP_INLINE_VISIBILITY is typically defined as:
|
|
#
|
|
# __attribute__((__visibility__("hidden"), __always_inline__))
|
|
#
|
|
# Unfortunately, this interacts badly with our system header wrappers, as the:
|
|
#
|
|
# #pragma GCC visibility push(default)
|
|
#
|
|
# that they do prior to including the actual system header is treated by the
|
|
# compiler as an explicit declaration of visibility on every function declared
|
|
# in the header. Therefore, when the libc++ code above is encountered, it is
|
|
# as though the compiler has effectively seen:
|
|
#
|
|
# int FUNC(...) __attribute__((__visibility__("default")));
|
|
# int FUNC(...) __attribute__((__visibility__("hidden")));
|
|
#
|
|
# and the compiler complains about the mismatched visibility declarations.
|
|
#
|
|
# However, libc++ will only define _LIBCPP_INLINE_VISIBILITY if there is no
|
|
# existing definition. We can therefore define it to the empty string (since
|
|
# we are properly managing visibility ourselves) and avoid this whole mess.
|
|
# Note that we don't need to do this with gcc, as libc++ detects gcc and
|
|
# effectively does the same thing we are doing here.
|
|
#
|
|
# _LIBCPP_ALWAYS_INLINE needs a similar workarounds, since it too declares
|
|
# hidden visibility.
|
|
#
|
|
# _LIBCPP_HIDE_FROM_ABI is a macro in libc++ versions in NDKs >=r19. It too
|
|
# declares hidden visibility, but it also declares functions as excluded from
|
|
# explicit instantiation (roughly: the function can be unused in the current
|
|
# compilation, but does not then trigger an actual definition of the function;
|
|
# it is assumed the real definition comes from elsewhere). We need to replicate
|
|
# this setup.
|
|
|
|
|
|
@depends(c_compiler, target)
|
|
def libcxx_override_visibility(c_compiler, target):
|
|
if c_compiler.type == 'clang' and target.os == 'Android':
|
|
return namespace(
|
|
empty='',
|
|
hide_from_abi='__attribute__((__exclude_from_explicit_instantiation__))',
|
|
)
|
|
|
|
|
|
set_define('_LIBCPP_INLINE_VISIBILITY', libcxx_override_visibility.empty)
|
|
set_define('_LIBCPP_ALWAYS_INLINE', libcxx_override_visibility.empty)
|
|
|
|
set_define('_LIBCPP_HIDE_FROM_ABI', libcxx_override_visibility.hide_from_abi)
|
|
|
|
@depends(target, check_build_environment)
|
|
def visibility_flags(target, env):
|
|
if target.os != 'WINNT':
|
|
if target.kernel == 'Darwin':
|
|
return ('-fvisibility=hidden', '-fvisibility-inlines-hidden')
|
|
return ('-I%s/system_wrappers' % os.path.join(env.dist),
|
|
'-include',
|
|
'%s/config/gcc_hidden.h' % env.topsrcdir)
|
|
|
|
|
|
@depends(target, visibility_flags)
|
|
def wrap_system_includes(target, visibility_flags):
|
|
if visibility_flags and target.kernel != 'Darwin':
|
|
return True
|
|
|
|
|
|
set_define('HAVE_VISIBILITY_HIDDEN_ATTRIBUTE',
|
|
depends(visibility_flags)(lambda v: bool(v) or None))
|
|
set_define('HAVE_VISIBILITY_ATTRIBUTE',
|
|
depends(visibility_flags)(lambda v: bool(v) or None))
|
|
set_config('WRAP_SYSTEM_INCLUDES', wrap_system_includes)
|
|
set_config('VISIBILITY_FLAGS', visibility_flags)
|
|
|
|
|
|
@template
|
|
def depend_cflags(host_or_target_c_compiler):
|
|
@depends(host_or_target_c_compiler)
|
|
def depend_cflags(host_or_target_c_compiler):
|
|
if host_or_target_c_compiler.type != 'clang-cl':
|
|
return ['-MD', '-MP', '-MF $(MDDEPDIR)/$(@F).pp']
|
|
else:
|
|
# clang-cl doesn't accept the normal -MD -MP -MF options that clang
|
|
# does, but the underlying cc1 binary understands how to generate
|
|
# dependency files. These options are based on analyzing what the
|
|
# normal clang driver sends to cc1 when given the "correct"
|
|
# dependency options.
|
|
return [
|
|
'-Xclang', '-MP',
|
|
'-Xclang', '-dependency-file',
|
|
'-Xclang', '$(MDDEPDIR)/$(@F).pp',
|
|
'-Xclang', '-MT',
|
|
'-Xclang', '$@'
|
|
]
|
|
|
|
return depend_cflags
|
|
|
|
|
|
set_config('_DEPEND_CFLAGS', depend_cflags(c_compiler))
|
|
set_config('_HOST_DEPEND_CFLAGS', depend_cflags(host_c_compiler))
|
|
|
|
|
|
@depends(c_compiler)
|
|
def preprocess_option(compiler):
|
|
# The uses of PREPROCESS_OPTION depend on the spacing for -o/-Fi.
|
|
if compiler.type in ('gcc', 'clang'):
|
|
return '-E -o '
|
|
else:
|
|
return '-P -Fi'
|
|
|
|
|
|
set_config('PREPROCESS_OPTION', preprocess_option)
|
|
|
|
|
|
# We only want to include windows.configure when we are compiling on
|
|
# Windows, or for Windows.
|
|
|
|
|
|
@depends(target, host)
|
|
def is_windows(target, host):
|
|
return host.kernel == 'WINNT' or target.kernel == 'WINNT'
|
|
|
|
|
|
include('windows.configure', when=is_windows)
|
|
|
|
|
|
# On Power ISA, determine compiler flags for VMX, VSX and VSX-3.
|
|
|
|
set_config('PPC_VMX_FLAGS',
|
|
['-maltivec'],
|
|
when=depends(target.cpu)(lambda cpu: cpu.startswith('ppc')))
|
|
|
|
set_config('PPC_VSX_FLAGS',
|
|
['-mvsx'],
|
|
when=depends(target.cpu)(lambda cpu: cpu.startswith('ppc')))
|
|
|
|
set_config('PPC_VSX3_FLAGS',
|
|
['-mvsx','-mcpu=power9'],
|
|
when=depends(target.cpu)(lambda cpu: cpu.startswith('ppc')))
|
|
|
|
# ASAN
|
|
# ==============================================================
|
|
|
|
js_option('--enable-address-sanitizer', help='Enable Address Sanitizer')
|
|
|
|
|
|
@depends(when='--enable-address-sanitizer')
|
|
def asan():
|
|
return True
|
|
|
|
|
|
add_old_configure_assignment('MOZ_ASAN', asan)
|
|
|
|
# MSAN
|
|
# ==============================================================
|
|
|
|
js_option('--enable-memory-sanitizer', help='Enable Memory Sanitizer')
|
|
|
|
|
|
@depends(when='--enable-memory-sanitizer')
|
|
def msan():
|
|
return True
|
|
|
|
|
|
add_old_configure_assignment('MOZ_MSAN', msan)
|
|
|
|
# TSAN
|
|
# ==============================================================
|
|
|
|
js_option('--enable-thread-sanitizer', help='Enable Thread Sanitizer')
|
|
|
|
|
|
@depends(when='--enable-thread-sanitizer')
|
|
def tsan():
|
|
return True
|
|
|
|
|
|
add_old_configure_assignment('MOZ_TSAN', tsan)
|
|
|
|
# UBSAN
|
|
# ==============================================================
|
|
|
|
js_option('--enable-undefined-sanitizer',
|
|
nargs='*',
|
|
help='Enable UndefinedBehavior Sanitizer')
|
|
|
|
@depends_if('--enable-undefined-sanitizer')
|
|
def ubsan(options):
|
|
default_checks = [
|
|
'bool',
|
|
'bounds',
|
|
'integer-divide-by-zero',
|
|
'object-size',
|
|
'pointer-overflow',
|
|
'return',
|
|
'vla-bound',
|
|
]
|
|
|
|
checks = options if len(options) else default_checks
|
|
|
|
return ','.join(checks)
|
|
|
|
add_old_configure_assignment('MOZ_UBSAN_CHECKS', ubsan)
|
|
|
|
|
|
js_option('--enable-signed-overflow-sanitizer',
|
|
help='Enable UndefinedBehavior Sanitizer (Signed Integer Overflow Parts)')
|
|
|
|
|
|
@depends(when='--enable-signed-overflow-sanitizer')
|
|
def ub_signed_overflow_san():
|
|
return True
|
|
|
|
|
|
add_old_configure_assignment('MOZ_SIGNED_OVERFLOW_SANITIZE', ub_signed_overflow_san)
|
|
|
|
|
|
js_option('--enable-unsigned-overflow-sanitizer',
|
|
help='Enable UndefinedBehavior Sanitizer (Unsigned Integer Overflow Parts)')
|
|
|
|
|
|
@depends(when='--enable-unsigned-overflow-sanitizer')
|
|
def ub_unsigned_overflow_san():
|
|
return True
|
|
|
|
|
|
add_old_configure_assignment('MOZ_UNSIGNED_OVERFLOW_SANITIZE', ub_unsigned_overflow_san)
|
|
|
|
# Security Hardening
|
|
# ==============================================================
|
|
|
|
option('--enable-hardening', env='MOZ_SECURITY_HARDENING',
|
|
help='Enables security hardening compiler options')
|
|
|
|
|
|
# This function is a bit confusing. It adds or removes hardening flags in
|
|
# three stuations: if --enable-hardening is passed; if --disable-hardening
|
|
# is passed, and if no flag is passed.
|
|
#
|
|
# At time of this comment writing, all flags are actually added in the
|
|
# default no-flag case; making --enable-hardening the same as omitting the
|
|
# flag. --disable-hardening will omit the security flags. (However, not all
|
|
# possible security flags will be omitted by --disable-hardening, as many are
|
|
# compiler-default options we do not explicitly enable.)
|
|
@depends('--enable-hardening', '--enable-address-sanitizer',
|
|
'--enable-debug', '--enable-optimize', c_compiler, target)
|
|
def security_hardening_cflags(hardening_flag, asan, debug, optimize, c_compiler,
|
|
target):
|
|
compiler_is_gccish = c_compiler.type in ('gcc', 'clang')
|
|
mingw_clang = c_compiler.type == 'clang' and target.os == 'WINNT'
|
|
|
|
flags = []
|
|
ldflags = []
|
|
js_flags = []
|
|
js_ldflags = []
|
|
|
|
# ----------------------------------------------------------
|
|
# If hardening is explicitly enabled, or not explicitly disabled
|
|
if hardening_flag.origin == "default" or hardening_flag:
|
|
# FORTIFY_SOURCE ------------------------------------
|
|
# Require optimization for FORTIFY_SOURCE. See Bug 1417452
|
|
# Also, undefine it before defining it just in case a distro adds it, see Bug 1418398
|
|
if compiler_is_gccish and optimize and not asan:
|
|
# Don't enable FORTIFY_SOURCE on Android on the top-level, but do enable in js/
|
|
if target.os != 'Android':
|
|
flags.append("-U_FORTIFY_SOURCE")
|
|
flags.append("-D_FORTIFY_SOURCE=2")
|
|
js_flags.append("-U_FORTIFY_SOURCE")
|
|
js_flags.append("-D_FORTIFY_SOURCE=2")
|
|
if mingw_clang:
|
|
# mingw-clang needs to link in ssp which is not done by default
|
|
ldflags.append('-lssp')
|
|
js_ldflags.append('-lssp')
|
|
|
|
# fstack-protector ------------------------------------
|
|
# Enable only if hardening is not disabled and ASAN is
|
|
# not on as ASAN will catch the crashes for us
|
|
if compiler_is_gccish and not asan:
|
|
flags.append("-fstack-protector-strong")
|
|
ldflags.append("-fstack-protector-strong")
|
|
js_flags.append("-fstack-protector-strong")
|
|
js_ldflags.append("-fstack-protector-strong")
|
|
|
|
# ftrivial-auto-var-init ------------------------------
|
|
# Initialize local variables with a 0xAA pattern in clang debug builds.
|
|
# Linux32 fails some xpcshell tests with -ftrivial-auto-var-init
|
|
linux32 = target.kernel == 'Linux' and target.cpu == 'x86'
|
|
if (c_compiler.type == 'clang' or c_compiler.type == 'clang-cl') and \
|
|
c_compiler.version >= '8' and debug and not linux32:
|
|
if c_compiler.type == 'clang-cl':
|
|
flags.append('-Xclang')
|
|
js_flags.append('-Xclang')
|
|
flags.append('-ftrivial-auto-var-init=pattern')
|
|
js_flags.append('-ftrivial-auto-var-init=pattern')
|
|
|
|
# ASLR ------------------------------------------------
|
|
# ASLR (dynamicbase) is enabled by default in clang-cl; but the
|
|
# mingw-clang build requires it to be explicitly enabled
|
|
if mingw_clang:
|
|
ldflags.append("-Wl,--dynamicbase")
|
|
js_ldflags.append("-Wl,--dynamicbase")
|
|
|
|
# Control Flow Guard (CFG) ----------------------------
|
|
# On aarch64, this is enabled only with explicit --enable-hardening
|
|
# (roughly: automation) due to a dependency on a patched clang-cl.
|
|
if c_compiler.type == 'clang-cl' and c_compiler.version >= '8' and \
|
|
(target.cpu != 'aarch64' or hardening_flag):
|
|
flags.append("-guard:cf")
|
|
js_flags.append("-guard:cf")
|
|
# nolongjmp is needed because clang doesn't emit the CFG tables of
|
|
# setjmp return addresses https://bugs.llvm.org/show_bug.cgi?id=40057
|
|
ldflags.append("-guard:cf,nolongjmp")
|
|
js_ldflags.append("-guard:cf,nolongjmp")
|
|
|
|
# ----------------------------------------------------------
|
|
# If ASAN _is_ on, undefine FORTIFY_SOURCE just to be safe
|
|
if asan:
|
|
flags.append("-U_FORTIFY_SOURCE")
|
|
js_flags.append("-U_FORTIFY_SOURCE")
|
|
|
|
# fno-common -----------------------------------------
|
|
# Do not merge variables for ASAN; can detect some subtle bugs
|
|
if asan:
|
|
# clang-cl does not recognize the flag, it must be passed down to clang
|
|
if c_compiler.type == 'clang-cl':
|
|
flags.append("-Xclang")
|
|
flags.append("-fno-common")
|
|
|
|
return namespace(
|
|
flags=flags,
|
|
ldflags=ldflags,
|
|
js_flags=js_flags,
|
|
js_ldflags=js_ldflags,
|
|
)
|
|
|
|
|
|
set_config('MOZ_HARDENING_CFLAGS', security_hardening_cflags.flags)
|
|
set_config('MOZ_HARDENING_LDFLAGS', security_hardening_cflags.ldflags)
|
|
set_config('MOZ_HARDENING_CFLAGS_JS', security_hardening_cflags.js_flags)
|
|
set_config('MOZ_HARDENING_LDFLAGS_JS', security_hardening_cflags.js_ldflags)
|
|
|
|
|
|
# Frame pointers
|
|
# ==============================================================
|
|
@depends(c_compiler)
|
|
def frame_pointer_flags(compiler):
|
|
if compiler.type == 'clang-cl':
|
|
return namespace(
|
|
enable=['-Oy-'],
|
|
disable=['-Oy'],
|
|
)
|
|
return namespace(
|
|
enable=['-fno-omit-frame-pointer', '-funwind-tables'],
|
|
disable=['-fomit-frame-pointer', '-funwind-tables'],
|
|
)
|
|
|
|
|
|
@depends(moz_optimize.optimize, moz_debug, target,
|
|
'--enable-memory-sanitizer', '--enable-address-sanitizer',
|
|
'--enable-undefined-sanitizer')
|
|
def frame_pointer_default(optimize, debug, target, msan, asan, ubsan):
|
|
return bool(not optimize or debug or msan or asan or ubsan or \
|
|
(target.os == 'WINNT' and target.cpu in ('x86', 'aarch64')))
|
|
|
|
|
|
js_option('--enable-frame-pointers', default=frame_pointer_default,
|
|
help='{Enable|Disable} frame pointers')
|
|
|
|
|
|
@depends('--enable-frame-pointers', frame_pointer_flags)
|
|
def frame_pointer_flags(enable, flags):
|
|
if enable:
|
|
return flags.enable
|
|
return flags.disable
|
|
|
|
|
|
set_config('MOZ_FRAMEPTR_FLAGS', frame_pointer_flags)
|
|
|
|
|
|
# nasm detection
|
|
# ==============================================================
|
|
nasm = check_prog('NASM', ['nasm'], allow_missing=True, paths=toolchain_search_path)
|
|
|
|
|
|
@depends_if(nasm)
|
|
@checking('nasm version')
|
|
def nasm_version(nasm):
|
|
(retcode, stdout, _) = get_cmd_output(nasm, '-v')
|
|
if retcode:
|
|
# mac stub binary
|
|
return None
|
|
|
|
version = stdout.splitlines()[0].split()[2]
|
|
return Version(version)
|
|
|
|
|
|
@depends_if(nasm_version)
|
|
def nasm_major_version(nasm_version):
|
|
return str(nasm_version.major)
|
|
|
|
|
|
@depends_if(nasm_version)
|
|
def nasm_minor_version(nasm_version):
|
|
return str(nasm_version.minor)
|
|
|
|
|
|
set_config('NASM_MAJOR_VERSION', nasm_major_version)
|
|
set_config('NASM_MINOR_VERSION', nasm_minor_version)
|
|
|
|
|
|
@depends(nasm, target)
|
|
def nasm_asflags(nasm, target):
|
|
if nasm:
|
|
asflags = {
|
|
('OSX', 'x86'): ['-f', 'macho32'],
|
|
('OSX', 'x86_64'): ['-f', 'macho64'],
|
|
('WINNT', 'x86'): ['-f', 'win32'],
|
|
('WINNT', 'x86_64'): ['-f', 'win64'],
|
|
}.get((target.os, target.cpu), None)
|
|
if asflags is None:
|
|
# We're assuming every x86 platform we support that's
|
|
# not Windows or Mac is ELF.
|
|
if target.cpu == 'x86':
|
|
asflags = ['-f', 'elf32']
|
|
elif target.cpu == 'x86_64':
|
|
asflags = ['-f', 'elf64']
|
|
return asflags
|
|
|
|
|
|
set_config('NASM_ASFLAGS', nasm_asflags)
|
|
|
|
@depends(nasm_asflags)
|
|
def have_nasm(value):
|
|
if value:
|
|
return True
|
|
|
|
|
|
@depends(yasm_asflags)
|
|
def have_yasm(yasm_asflags):
|
|
if yasm_asflags:
|
|
return True
|
|
|
|
set_config('HAVE_NASM', have_nasm)
|
|
|
|
set_config('HAVE_YASM', have_yasm)
|
|
# Until the YASM variable is not necessary in old-configure.
|
|
add_old_configure_assignment('YASM', have_yasm)
|
|
|
|
|
|
# clang-cl integrated assembler support
|
|
# ==============================================================
|
|
@depends(target)
|
|
def clangcl_asflags(target):
|
|
asflags = None
|
|
if target.os == 'WINNT' and target.cpu == 'aarch64':
|
|
asflags = ['--target=aarch64-windows-msvc']
|
|
return asflags
|
|
|
|
|
|
set_config('CLANGCL_ASFLAGS', clangcl_asflags)
|
|
|
|
|
|
# Code Coverage
|
|
# ==============================================================
|
|
|
|
js_option('--enable-coverage', env='MOZ_CODE_COVERAGE',
|
|
help='Enable code coverage')
|
|
|
|
|
|
@depends('--enable-coverage')
|
|
def code_coverage(value):
|
|
if value:
|
|
return True
|
|
|
|
|
|
set_config('MOZ_CODE_COVERAGE', code_coverage)
|
|
set_define('MOZ_CODE_COVERAGE', code_coverage)
|
|
|
|
@depends(target, c_compiler, vc_path, check_build_environment, when=code_coverage)
|
|
@imports('re')
|
|
@imports('mozpack.path')
|
|
@imports(_from='__builtin__', _import='open')
|
|
def coverage_cflags(target, c_compiler, vc_path, build_env):
|
|
cflags = ['--coverage']
|
|
|
|
if c_compiler.type in ('clang', 'clang-cl'):
|
|
cflags += [
|
|
'-Xclang', '-coverage-no-function-names-in-data',
|
|
]
|
|
|
|
if target.os == 'WINNT' and c_compiler.type == 'clang-cl':
|
|
# The Visual Studio directory is the parent of the Visual C++ directory.
|
|
vs_path = os.path.dirname(vc_path)
|
|
|
|
# We need to get the real path of Visual Studio, which can be in a
|
|
# symlinked directory (for example, on automation).
|
|
vs_path = mozpack.path.readlink(vs_path)
|
|
# Since the -fprofile-exclude-files option in LLVM is a regex, we need to
|
|
# have the same path separators.
|
|
vs_path = vs_path.replace('/', '\\')
|
|
|
|
cflags += [
|
|
'-fprofile-exclude-files=^{}.*$'.format(re.escape(vs_path)),
|
|
]
|
|
|
|
response_file_path = os.path.join(build_env.topobjdir, 'code_coverage_cflags')
|
|
|
|
with open(response_file_path, 'w') as f:
|
|
f.write(' '.join(cflags))
|
|
|
|
return ['@{}'.format(response_file_path)]
|
|
|
|
set_config('COVERAGE_CFLAGS', coverage_cflags)
|
|
|
|
# ==============================================================
|
|
|
|
option(env='RUSTFLAGS',
|
|
nargs=1,
|
|
help='Rust compiler flags')
|
|
set_config('RUSTFLAGS', depends('RUSTFLAGS')(lambda flags: flags))
|
|
|
|
|
|
# Rust compiler flags
|
|
# ==============================================================
|
|
|
|
js_option(env='RUSTC_OPT_LEVEL',
|
|
nargs=1,
|
|
help='Rust compiler optimization level (-C opt-level=%s)')
|
|
|
|
# --enable-release kicks in full optimizations.
|
|
imply_option('RUSTC_OPT_LEVEL', '2', when='--enable-release')
|
|
|
|
|
|
@depends('RUSTC_OPT_LEVEL', moz_optimize)
|
|
def rustc_opt_level(opt_level_option, moz_optimize):
|
|
if opt_level_option:
|
|
return opt_level_option[0]
|
|
else:
|
|
return '1' if moz_optimize.optimize else '0'
|
|
|
|
|
|
@depends(rustc_opt_level, debug_rust, '--enable-debug-symbols', '--enable-frame-pointers')
|
|
def rust_compile_flags(opt_level, debug_rust, debug_symbols, frame_pointers):
|
|
# Cargo currently supports only two interesting profiles for building:
|
|
# development and release. Those map (roughly) to --enable-debug and
|
|
# --disable-debug in Gecko, respectively.
|
|
#
|
|
# But we'd also like to support an additional axis of control for
|
|
# optimization level. Since Cargo only supports 2 profiles, we're in
|
|
# a bit of a bind.
|
|
#
|
|
# Code here derives various compiler options given other configure options.
|
|
# The options defined here effectively override defaults specified in
|
|
# Cargo.toml files.
|
|
|
|
debug_assertions = None
|
|
debug_info = None
|
|
|
|
# opt-level=0 implies -C debug-assertions, which may not be desired
|
|
# unless Rust debugging is enabled.
|
|
if opt_level == '0' and not debug_rust:
|
|
debug_assertions = False
|
|
|
|
if debug_symbols:
|
|
debug_info = '2'
|
|
|
|
opts = []
|
|
|
|
if opt_level is not None:
|
|
opts.append('opt-level=%s' % opt_level)
|
|
if debug_assertions is not None:
|
|
opts.append('debug-assertions=%s' %
|
|
('yes' if debug_assertions else 'no'))
|
|
if debug_info is not None:
|
|
opts.append('debuginfo=%s' % debug_info)
|
|
if frame_pointers:
|
|
opts.append('force-frame-pointers=yes')
|
|
|
|
flags = []
|
|
for opt in opts:
|
|
flags.extend(['-C', opt])
|
|
|
|
return flags
|
|
|
|
|
|
# Rust incremental compilation
|
|
# ==============================================================
|
|
|
|
|
|
js_option('--disable-cargo-incremental',
|
|
help='Disable incremental rust compilation.')
|
|
|
|
@depends(rustc_opt_level, debug_rust, 'MOZ_AUTOMATION', code_coverage,
|
|
'--disable-cargo-incremental', using_sccache, 'RUSTC_WRAPPER')
|
|
@imports('os')
|
|
def cargo_incremental(opt_level, debug_rust, automation, code_coverage,
|
|
enabled, using_sccache, rustc_wrapper):
|
|
"""Return a value for the CARGO_INCREMENTAL environment variable."""
|
|
|
|
if not enabled:
|
|
return '0'
|
|
|
|
# We never want to use incremental compilation in automation. sccache
|
|
# handles our automation use case much better than incremental compilation
|
|
# would.
|
|
if automation:
|
|
return '0'
|
|
|
|
# Coverage instrumentation doesn't play well with incremental compilation
|
|
# https://github.com/rust-lang/rust/issues/50203.
|
|
if code_coverage:
|
|
return '0'
|
|
|
|
# Incremental compilation doesn't work as well as it should, and if we're
|
|
# using sccache, it's better to use sccache than incremental compilation.
|
|
if not using_sccache and rustc_wrapper:
|
|
rustc_wrapper = os.path.basename(rustc_wrapper[0])
|
|
if os.path.splitext(rustc_wrapper)[0].lower() == 'sccache':
|
|
using_sccache = True
|
|
if using_sccache:
|
|
return '0'
|
|
|
|
# Incremental compilation is automatically turned on for debug builds, so
|
|
# we don't need to do anything special here.
|
|
if debug_rust:
|
|
return
|
|
|
|
# --enable-release automatically sets -O2 for Rust code, and people can
|
|
# set RUSTC_OPT_LEVEL to 2 or even 3 if they want to profile Rust code.
|
|
# Let's assume that if Rust code is using -O2 or higher, we shouldn't
|
|
# be using incremental compilation, because we'd be imposing a
|
|
# significant runtime cost.
|
|
if opt_level not in ('0', '1'):
|
|
return
|
|
|
|
# We're clear to use incremental compilation!
|
|
return '1'
|
|
|
|
|
|
set_config('CARGO_INCREMENTAL', cargo_incremental)
|
|
|
|
# Linker detection
|
|
# ==============================================================
|
|
|
|
|
|
@depends(target)
|
|
def is_linker_option_enabled(target):
|
|
if target.kernel not in ('WINNT', 'SunOS'):
|
|
return True
|
|
|
|
|
|
option('--enable-gold',
|
|
env='MOZ_FORCE_GOLD',
|
|
help='Enable GNU Gold Linker when it is not already the default',
|
|
when=is_linker_option_enabled)
|
|
|
|
imply_option('--enable-linker', 'gold', when='--enable-gold')
|
|
|
|
@depends(target, developer_options)
|
|
def enable_linker_default(target, developer_options):
|
|
# x86-64 gold has bugs in how it lays out .note.* sections. See bug 1573820.
|
|
# lld is faster, so prefer that for developer builds.
|
|
if target.os == 'Android' and target.cpu == 'x86_64':
|
|
return 'lld' if developer_options else 'bfd'
|
|
|
|
|
|
js_option('--enable-linker', nargs=1,
|
|
help='Select the linker {bfd, gold, ld64, lld, lld-*}{|}',
|
|
default=enable_linker_default,
|
|
when=is_linker_option_enabled)
|
|
|
|
|
|
@depends('--enable-linker', c_compiler, developer_options, '--enable-gold',
|
|
extra_toolchain_flags, target, when=is_linker_option_enabled)
|
|
@checking('for linker', lambda x: x.KIND)
|
|
@imports('os')
|
|
@imports('shutil')
|
|
def select_linker(linker, c_compiler, developer_options, enable_gold,
|
|
toolchain_flags, target):
|
|
|
|
if linker:
|
|
linker = linker[0]
|
|
else:
|
|
linker = None
|
|
|
|
def is_valid_linker(linker):
|
|
if target.kernel == 'Darwin':
|
|
valid_linkers = ('ld64', 'lld')
|
|
else:
|
|
valid_linkers = ('bfd', 'gold', 'lld')
|
|
if linker in valid_linkers:
|
|
return True
|
|
if 'lld' in valid_linkers and linker.startswith('lld-'):
|
|
return True
|
|
return False
|
|
|
|
if linker and not is_valid_linker(linker):
|
|
# Check that we are trying to use a supported linker
|
|
die('Unsupported linker ' + linker)
|
|
|
|
# Check the kind of linker
|
|
version_check = ['-Wl,--version']
|
|
cmd_base = c_compiler.wrapper + [c_compiler.compiler] + c_compiler.flags
|
|
|
|
def try_linker(linker):
|
|
# Generate the compiler flag
|
|
if linker == 'ld64':
|
|
linker_flag = ['-fuse-ld=ld']
|
|
elif linker:
|
|
linker_flag = ["-fuse-ld=" + linker]
|
|
else:
|
|
linker_flag = []
|
|
cmd = cmd_base + linker_flag + version_check
|
|
if toolchain_flags:
|
|
cmd += toolchain_flags
|
|
|
|
# ld64 doesn't have anything to print out a version. It does print out
|
|
# "ld64: For information on command line options please use 'man ld'."
|
|
# but that would require doing two attempts, one with --version, that
|
|
# would fail, and another with --help.
|
|
# Instead, abuse its LD_PRINT_OPTIONS feature to detect a message
|
|
# specific to it on stderr when it fails to process --version.
|
|
env = dict(os.environ)
|
|
env['LD_PRINT_OPTIONS'] = '1'
|
|
retcode, stdout, stderr = get_cmd_output(*cmd, env=env)
|
|
if retcode == 1 and 'Logging ld64 options' in stderr:
|
|
kind = 'ld64'
|
|
|
|
elif retcode != 0:
|
|
return None
|
|
|
|
elif 'GNU ld' in stdout:
|
|
# We are using the normal linker
|
|
kind = 'bfd'
|
|
|
|
elif 'GNU gold' in stdout:
|
|
kind = 'gold'
|
|
|
|
elif 'LLD' in stdout:
|
|
kind = 'lld'
|
|
|
|
else:
|
|
kind = 'unknown'
|
|
|
|
return namespace(
|
|
KIND=kind,
|
|
LINKER_FLAG=linker_flag,
|
|
)
|
|
|
|
result = try_linker(linker)
|
|
if result is None:
|
|
if linker:
|
|
die("Could not use {} as linker".format(linker))
|
|
die("Failed to find a linker")
|
|
|
|
if (linker is None and enable_gold.origin == 'default' and
|
|
developer_options and result.KIND in ('bfd', 'gold')):
|
|
# try and use lld if available.
|
|
tried = try_linker('lld')
|
|
if result.KIND != 'gold' and (tried is None or tried.KIND != 'lld'):
|
|
tried = try_linker('gold')
|
|
if tried is None or tried.KIND != 'gold':
|
|
tried = None
|
|
if tried:
|
|
result = tried
|
|
|
|
# If an explicit linker was given, error out if what we found is different.
|
|
if linker and not linker.startswith(result.KIND):
|
|
die("Could not use {} as linker".format(linker))
|
|
|
|
return result
|
|
|
|
|
|
set_config('LINKER_KIND', select_linker.KIND)
|
|
|
|
|
|
@depends_if(select_linker, macos_sdk)
|
|
def linker_ldflags(linker, macos_sdk):
|
|
flags = list(linker.LINKER_FLAG or [])
|
|
if macos_sdk:
|
|
if linker.KIND == 'ld64':
|
|
flags.append('-Wl,-syslibroot,%s' % macos_sdk)
|
|
else:
|
|
flags.append('-Wl,--sysroot=%s' % macos_sdk)
|
|
|
|
return flags
|
|
|
|
|
|
add_old_configure_assignment('LINKER_LDFLAGS', linker_ldflags)
|
|
|
|
|
|
# There's a wrinkle with MinGW: linker configuration is not enabled, so
|
|
# `select_linker` is never invoked. Hard-code around it.
|
|
@depends(select_linker, target, c_compiler)
|
|
def gcc_use_gnu_ld(select_linker, target, c_compiler):
|
|
if select_linker is not None:
|
|
return select_linker.KIND in ('bfd', 'gold', 'lld')
|
|
if target.kernel == 'WINNT' and c_compiler.type == 'clang':
|
|
return True
|
|
return None
|
|
|
|
|
|
# GCC_USE_GNU_LD=1 means the linker is command line compatible with GNU ld.
|
|
set_config('GCC_USE_GNU_LD', gcc_use_gnu_ld)
|
|
add_old_configure_assignment('GCC_USE_GNU_LD', gcc_use_gnu_ld)
|
|
|
|
# Assembler detection
|
|
# ==============================================================
|
|
|
|
js_option(env='AS', nargs=1, help='Path to the assembler')
|
|
|
|
@depends(target, c_compiler)
|
|
def as_info(target, c_compiler):
|
|
if c_compiler.type == 'clang-cl':
|
|
ml = {
|
|
'x86': 'ml',
|
|
'x86_64': 'ml64',
|
|
'aarch64': 'armasm64.exe',
|
|
}.get(target.cpu)
|
|
return namespace(
|
|
type='masm',
|
|
names=(ml, )
|
|
)
|
|
# When building with anything but clang-cl, we just use the C compiler as the assembler.
|
|
return namespace(
|
|
type='gcc',
|
|
names=(c_compiler.compiler, )
|
|
)
|
|
|
|
# One would expect the assembler to be specified merely as a program. But in
|
|
# cases where the assembler is passed down into js/, it can be specified in
|
|
# the same way as CC: a program + a list of argument flags. We might as well
|
|
# permit the same behavior in general, even though it seems somewhat unusual.
|
|
# So we have to do the same sort of dance as we did above with
|
|
# `provided_compiler`.
|
|
provided_assembler = provided_program('AS')
|
|
assembler = check_prog('_AS', input=provided_assembler.program,
|
|
what='the assembler', progs=as_info.names,
|
|
paths=toolchain_search_path)
|
|
|
|
@depends(as_info, assembler, provided_assembler, c_compiler)
|
|
def as_with_flags(as_info, assembler, provided_assembler, c_compiler):
|
|
if provided_assembler:
|
|
return provided_assembler.wrapper + \
|
|
[provided_assembler.program] + \
|
|
provided_assembler.flags
|
|
|
|
if as_info.type == 'masm':
|
|
return assembler
|
|
|
|
assert as_info.type == 'gcc'
|
|
|
|
# Need to add compiler wrappers and flags as appropriate.
|
|
return c_compiler.wrapper + [assembler] + c_compiler.flags
|
|
|
|
|
|
add_old_configure_assignment('AS', as_with_flags)
|
|
add_old_configure_assignment('ac_cv_prog_AS', as_with_flags)
|
|
|
|
|
|
@depends(assembler, c_compiler, extra_toolchain_flags)
|
|
@imports('subprocess')
|
|
@imports(_from='os', _import='devnull')
|
|
def gnu_as(assembler, c_compiler, toolchain_flags):
|
|
# clang uses a compatible GNU assembler.
|
|
if c_compiler.type == 'clang':
|
|
return True
|
|
|
|
if c_compiler.type == 'gcc':
|
|
cmd = [assembler] + c_compiler.flags
|
|
if toolchain_flags:
|
|
cmd += toolchain_flags
|
|
cmd += ['-Wa,--version', '-c', '-o', devnull, '-x', 'assembler', '-']
|
|
# We don't actually have to provide any input on stdin, `Popen.communicate` will
|
|
# close the stdin pipe.
|
|
# clang will error if it uses its integrated assembler for this target,
|
|
# so handle failures gracefully.
|
|
if 'GNU' in check_cmd_output(*cmd, stdin=subprocess.PIPE, onerror=lambda: ''):
|
|
return True
|
|
|
|
|
|
set_config('GNU_AS', gnu_as)
|
|
add_old_configure_assignment('GNU_AS', gnu_as)
|
|
|
|
|
|
@depends(as_info, target)
|
|
def as_dash_c_flag(as_info, target):
|
|
# armasm64 doesn't understand -c.
|
|
if as_info.type == 'masm' and target.cpu == 'aarch64':
|
|
return ''
|
|
else:
|
|
return '-c'
|
|
|
|
|
|
set_config('AS_DASH_C_FLAG', as_dash_c_flag)
|
|
|
|
|
|
@depends(as_info, target)
|
|
def as_outoption(as_info, target):
|
|
# The uses of ASOUTOPTION depend on the spacing for -o/-Fo.
|
|
if as_info.type == 'masm' and target.cpu != 'aarch64':
|
|
return '-Fo'
|
|
|
|
return '-o '
|
|
|
|
|
|
set_config('ASOUTOPTION', as_outoption)
|
|
|
|
# clang plugin handling
|
|
# ==============================================================
|
|
|
|
js_option('--enable-clang-plugin', env='ENABLE_CLANG_PLUGIN',
|
|
help="Enable building with the Clang plugin (gecko specific static analyzers)")
|
|
|
|
add_old_configure_assignment('ENABLE_CLANG_PLUGIN',
|
|
depends_if('--enable-clang-plugin')(lambda _: True))
|
|
|
|
js_option('--enable-mozsearch-plugin', env='ENABLE_MOZSEARCH_PLUGIN',
|
|
help="Enable building with the mozsearch indexer plugin")
|
|
|
|
add_old_configure_assignment('ENABLE_MOZSEARCH_PLUGIN',
|
|
depends_if('--enable-mozsearch-plugin')(lambda _: True))
|
|
|
|
# Libstdc++ compatibility hacks
|
|
# ==============================================================
|
|
#
|
|
js_option('--enable-stdcxx-compat', env='MOZ_STDCXX_COMPAT',
|
|
help='Enable compatibility with older libstdc++')
|
|
|
|
|
|
@template
|
|
def libstdcxx_version(var, compiler):
|
|
@depends(compiler, when='--enable-stdcxx-compat')
|
|
@checking(var, lambda v: v and "GLIBCXX_%s" % v.dotted)
|
|
@imports(_from='mozbuild.configure.libstdcxx', _import='find_version')
|
|
@imports(_from='__builtin__', _import='Exception')
|
|
def version(compiler):
|
|
try:
|
|
result = find_version(
|
|
compiler.wrapper + [compiler.compiler] + compiler.flags)
|
|
except Exception:
|
|
die("Couldn't determine libstdc++ version")
|
|
if result:
|
|
return namespace(
|
|
dotted=result[0],
|
|
encoded=str(result[1]),
|
|
)
|
|
|
|
set_config(var, version.encoded)
|
|
return version
|
|
|
|
|
|
add_gcc_flag(
|
|
'-D_GLIBCXX_USE_CXX11_ABI=0', cxx_compiler,
|
|
when=libstdcxx_version(
|
|
'MOZ_LIBSTDCXX_TARGET_VERSION', cxx_compiler))
|
|
add_gcc_flag(
|
|
'-D_GLIBCXX_USE_CXX11_ABI=0', host_cxx_compiler,
|
|
when=libstdcxx_version(
|
|
'MOZ_LIBSTDCXX_HOST_VERSION', host_cxx_compiler))
|
|
|
|
|
|
# Support various fuzzing options
|
|
# ==============================================================
|
|
js_option('--enable-fuzzing', help='Enable fuzzing support')
|
|
|
|
@depends('--enable-fuzzing')
|
|
def enable_fuzzing(value):
|
|
if value:
|
|
return True
|
|
|
|
@depends(try_compile(body='__AFL_COMPILER;',
|
|
check_msg='for AFL compiler',
|
|
when='--enable-fuzzing'))
|
|
def enable_aflfuzzer(afl):
|
|
if afl:
|
|
return True
|
|
|
|
@depends(enable_fuzzing,
|
|
enable_aflfuzzer,
|
|
c_compiler,
|
|
target)
|
|
def enable_libfuzzer(fuzzing, afl, c_compiler, target):
|
|
if fuzzing and not afl and c_compiler.type == 'clang' and target.os != 'Android':
|
|
return True
|
|
|
|
@depends(enable_fuzzing,
|
|
enable_aflfuzzer,
|
|
enable_libfuzzer)
|
|
def enable_fuzzing_interfaces(fuzzing, afl, libfuzzer):
|
|
if fuzzing and (afl or libfuzzer):
|
|
return True
|
|
|
|
set_config('FUZZING', enable_fuzzing)
|
|
set_define('FUZZING', enable_fuzzing)
|
|
|
|
set_config('LIBFUZZER', enable_libfuzzer)
|
|
set_define('LIBFUZZER', enable_libfuzzer)
|
|
add_old_configure_assignment('LIBFUZZER', enable_libfuzzer)
|
|
|
|
set_config('FUZZING_INTERFACES', enable_fuzzing_interfaces)
|
|
set_define('FUZZING_INTERFACES', enable_fuzzing_interfaces)
|
|
add_old_configure_assignment('FUZZING_INTERFACES', enable_fuzzing_interfaces)
|
|
|
|
|
|
@depends(c_compiler.try_compile(flags=['-fsanitize=fuzzer-no-link'],
|
|
when=enable_fuzzing,
|
|
check_msg='whether the C compiler supports -fsanitize=fuzzer-no-link'), tsan)
|
|
def libfuzzer_flags(value, tsan):
|
|
if tsan:
|
|
# With ThreadSanitizer, we should not use any libFuzzer instrumentation because
|
|
# it is incompatible (e.g. there are races on global sanitizer coverage counters).
|
|
# Instead we use an empty set of flags here but still build the fuzzing targets.
|
|
# With this setup, we can still run files through these targets in TSan builds,
|
|
# e.g. those obtained from regular fuzzing.
|
|
# This code can be removed once libFuzzer has been made compatible with TSan.
|
|
return namespace(no_link_flag_supported=False, use_flags=[])
|
|
|
|
if value:
|
|
no_link_flag_supported = True
|
|
# recommended for (and only supported by) clang >= 6
|
|
use_flags = ['-fsanitize=fuzzer-no-link']
|
|
else:
|
|
no_link_flag_supported = False
|
|
use_flags = ['-fsanitize-coverage=trace-pc-guard,trace-cmp']
|
|
|
|
return namespace(
|
|
no_link_flag_supported=no_link_flag_supported,
|
|
use_flags=use_flags,
|
|
)
|
|
|
|
set_config('HAVE_LIBFUZZER_FLAG_FUZZER_NO_LINK', libfuzzer_flags.no_link_flag_supported)
|
|
set_config('LIBFUZZER_FLAGS', libfuzzer_flags.use_flags)
|
|
add_old_configure_assignment('LIBFUZZER_FLAGS', libfuzzer_flags.use_flags)
|
|
|
|
# Shared library building
|
|
# ==============================================================
|
|
|
|
# XXX: The use of makefile constructs in these variables is awful.
|
|
@depends(target, c_compiler)
|
|
def make_shared_library(target, compiler):
|
|
if target.os == 'WINNT':
|
|
if compiler.type == 'gcc':
|
|
return namespace(
|
|
mkshlib=['$(CXX)', '$(DSO_LDOPTS)', '-o', '$@'],
|
|
mkcshlib=['$(CC)', '$(DSO_LDOPTS)', '-o', '$@'],
|
|
)
|
|
elif compiler.type == 'clang':
|
|
return namespace(
|
|
mkshlib=['$(CXX)', '$(DSO_LDOPTS)', '-Wl,-pdb,$(LINK_PDBFILE)', '-o', '$@'],
|
|
mkcshlib=['$(CC)', '$(DSO_LDOPTS)', '-Wl,-pdb,$(LINK_PDBFILE)', '-o', '$@'],
|
|
)
|
|
else:
|
|
linker = [
|
|
'$(LINKER)',
|
|
'-NOLOGO', '-DLL',
|
|
'-OUT:$@',
|
|
'-PDB:$(LINK_PDBFILE)',
|
|
'$(DSO_LDOPTS)'
|
|
]
|
|
return namespace(
|
|
mkshlib=linker,
|
|
mkcshlib=linker,
|
|
)
|
|
|
|
cc = ['$(CC)', '$(COMPUTED_C_LDFLAGS)']
|
|
cxx = ['$(CXX)', '$(COMPUTED_CXX_LDFLAGS)']
|
|
flags = ['$(PGO_CFLAGS)', '$(DSO_PIC_CFLAGS)', '$(DSO_LDOPTS)']
|
|
output = ['-o', '$@']
|
|
|
|
if target.kernel == 'Darwin':
|
|
soname = []
|
|
elif target.os == 'NetBSD':
|
|
soname = ['-Wl,-soname,$(DSO_SONAME)']
|
|
else:
|
|
assert compiler.type in ('gcc', 'clang')
|
|
|
|
soname = ['-Wl,-h,$(DSO_SONAME)']
|
|
|
|
return namespace(
|
|
mkshlib=cxx + flags + soname + output,
|
|
mkcshlib=cc + flags + soname + output,
|
|
)
|
|
|
|
|
|
set_config('MKSHLIB', make_shared_library.mkshlib)
|
|
set_config('MKCSHLIB', make_shared_library.mkcshlib)
|
|
|
|
|
|
@depends(c_compiler, toolchain_prefix, when=target_is_windows)
|
|
def rc_names(c_compiler, toolchain_prefix):
|
|
if c_compiler.type in ('gcc', 'clang'):
|
|
return tuple('%s%s' % (p, 'windres')
|
|
for p in ('',) + (toolchain_prefix or ()))
|
|
return ('rc',)
|
|
|
|
|
|
check_prog('RC', rc_names, paths=sdk_bin_path, when=target_is_windows)
|
|
|
|
|
|
@depends(link, toolchain_prefix, c_compiler)
|
|
def ar_config(link, toolchain_prefix, c_compiler):
|
|
if c_compiler.type == 'clang-cl' and link:
|
|
# if LINKER is set, it's either for lld-link or link
|
|
if 'lld-link' in link:
|
|
return namespace(
|
|
names=('llvm-lib',),
|
|
flags=('-llvmlibthin', '-out:$@'),
|
|
)
|
|
else:
|
|
return namespace(
|
|
names=('lib',),
|
|
flags=('-NOLOGO', '-OUT:$@'),
|
|
)
|
|
return namespace(
|
|
names=tuple('%s%s' % (p, 'ar')
|
|
for p in (toolchain_prefix or ()) + ('',)),
|
|
flags=('crs', '$@'),
|
|
)
|
|
|
|
|
|
ar = check_prog('AR', ar_config.names, paths=toolchain_search_path)
|
|
|
|
add_old_configure_assignment('AR', ar)
|
|
|
|
set_config('AR_FLAGS', ar_config.flags)
|