| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| # Copyright 2010 The ChromiumOS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Script to build the ChromeOS toolchain. |
| |
| This script sets up the toolchain if you give it the gcctools directory. |
| """ |
| |
| from __future__ import print_function |
| |
| __author__ = 'asharif@google.com (Ahmad Sharif)' |
| |
| import argparse |
| import getpass |
| import os |
| import sys |
| import tempfile |
| |
| import tc_enter_chroot |
| from cros_utils import command_executer |
| from cros_utils import constants |
| from cros_utils import misc |
| |
| |
| class ToolchainPart(object): |
| """Class to hold the toolchain pieces.""" |
| |
| def __init__(self, |
| name, |
| source_path, |
| chromeos_root, |
| board, |
| incremental, |
| build_env, |
| gcc_enable_ccache=False): |
| self._name = name |
| self._source_path = misc.CanonicalizePath(source_path) |
| self._chromeos_root = chromeos_root |
| self._board = board |
| self._ctarget = misc.GetCtargetFromBoard(self._board, self._chromeos_root) |
| self._gcc_libs_dest = misc.GetGccLibsDestForBoard(self._board, |
| self._chromeos_root) |
| self.tag = '%s-%s' % (name, self._ctarget) |
| self._ce = command_executer.GetCommandExecuter() |
| self._mask_file = os.path.join( |
| self._chromeos_root, 'chroot', |
| 'etc/portage/package.mask/cross-%s' % self._ctarget) |
| self._new_mask_file = None |
| |
| self._chroot_source_path = os.path.join(constants.MOUNTED_TOOLCHAIN_ROOT, |
| self._name).lstrip('/') |
| self._incremental = incremental |
| self._build_env = build_env |
| self._gcc_enable_ccache = gcc_enable_ccache |
| |
| def RunSetupBoardIfNecessary(self): |
| cross_symlink = os.path.join(self._chromeos_root, 'chroot', |
| 'usr/local/bin/emerge-%s' % self._board) |
| if not os.path.exists(cross_symlink): |
| command = 'setup_board --board=%s' % self._board |
| self._ce.ChrootRunCommand(self._chromeos_root, command) |
| |
| def Build(self): |
| rv = 1 |
| try: |
| self.UninstallTool() |
| self.MoveMaskFile() |
| self.MountSources(False) |
| self.RemoveCompiledFile() |
| rv = self.BuildTool() |
| finally: |
| self.UnMoveMaskFile() |
| return rv |
| |
| def RemoveCompiledFile(self): |
| compiled_file = os.path.join(self._chromeos_root, 'chroot', |
| 'var/tmp/portage/cross-%s' % self._ctarget, |
| '%s-9999' % self._name, '.compiled') |
| command = 'rm -f %s' % compiled_file |
| self._ce.RunCommand(command) |
| |
| def MountSources(self, unmount_source): |
| mount_points = [] |
| mounted_source_path = os.path.join(self._chromeos_root, 'chroot', |
| self._chroot_source_path) |
| src_mp = tc_enter_chroot.MountPoint(self._source_path, mounted_source_path, |
| getpass.getuser(), 'ro') |
| mount_points.append(src_mp) |
| |
| build_suffix = 'build-%s' % self._ctarget |
| build_dir = '%s-%s' % (self._source_path, build_suffix) |
| |
| if not self._incremental and os.path.exists(build_dir): |
| command = 'rm -rf %s/*' % build_dir |
| self._ce.RunCommand(command) |
| |
| # Create a -build directory for the objects. |
| command = 'mkdir -p %s' % build_dir |
| self._ce.RunCommand(command) |
| |
| mounted_build_dir = os.path.join( |
| self._chromeos_root, 'chroot', |
| '%s-%s' % (self._chroot_source_path, build_suffix)) |
| build_mp = tc_enter_chroot.MountPoint(build_dir, mounted_build_dir, |
| getpass.getuser()) |
| mount_points.append(build_mp) |
| |
| if unmount_source: |
| unmount_statuses = [mp.UnMount() == 0 for mp in mount_points] |
| assert all(unmount_statuses), 'Could not unmount all mount points!' |
| else: |
| mount_statuses = [mp.DoMount() == 0 for mp in mount_points] |
| |
| if not all(mount_statuses): |
| mounted = [ |
| mp for mp, status in zip(mount_points, mount_statuses) if status |
| ] |
| unmount_statuses = [mp.UnMount() == 0 for mp in mounted] |
| assert all(unmount_statuses), 'Could not unmount all mount points!' |
| |
| def UninstallTool(self): |
| command = 'sudo CLEAN_DELAY=0 emerge -C cross-%s/%s' % (self._ctarget, |
| self._name) |
| self._ce.ChrootRunCommand(self._chromeos_root, command) |
| |
| def BuildTool(self): |
| env = self._build_env |
| # FEATURES=buildpkg adds minutes of time so we disable it. |
| # TODO(shenhan): keep '-sandbox' for a while for compatibility, then remove |
| # it after a while. |
| features = ('nostrip userpriv userfetch -usersandbox -sandbox noclean ' |
| '-buildpkg') |
| env['FEATURES'] = features |
| |
| if self._incremental: |
| env['FEATURES'] += ' keepwork' |
| |
| if 'USE' in env: |
| env['USE'] += ' multislot mounted_%s' % self._name |
| else: |
| env['USE'] = 'multislot mounted_%s' % self._name |
| |
| # Disable ccache in our compilers. cache may be problematic for us. |
| # It ignores compiler environments settings and it is not clear if |
| # the cache hit algorithm verifies all the compiler binaries or |
| # just the driver. |
| if self._name == 'gcc' and not self._gcc_enable_ccache: |
| env['USE'] += ' -wrapper_ccache' |
| |
| env['%s_SOURCE_PATH' % self._name.upper()] = ( |
| os.path.join('/', self._chroot_source_path)) |
| env['ACCEPT_KEYWORDS'] = '~*' |
| env_string = ' '.join(['%s="%s"' % var for var in env.items()]) |
| command = 'emerge =cross-%s/%s-9999' % (self._ctarget, self._name) |
| full_command = 'sudo %s %s' % (env_string, command) |
| rv = self._ce.ChrootRunCommand(self._chromeos_root, full_command) |
| if rv != 0: |
| return rv |
| if self._name == 'gcc': |
| command = ('sudo cp -r /usr/lib/gcc/%s %s' % (self._ctarget, |
| self._gcc_libs_dest)) |
| rv = self._ce.ChrootRunCommand(self._chromeos_root, command) |
| return rv |
| |
| def MoveMaskFile(self): |
| self._new_mask_file = None |
| if os.path.isfile(self._mask_file): |
| self._new_mask_file = tempfile.mktemp() |
| command = 'sudo mv %s %s' % (self._mask_file, self._new_mask_file) |
| self._ce.RunCommand(command) |
| |
| def UnMoveMaskFile(self): |
| if self._new_mask_file: |
| command = 'sudo mv %s %s' % (self._new_mask_file, self._mask_file) |
| self._ce.RunCommand(command) |
| |
| |
| def Main(argv): |
| """The main function.""" |
| # Common initializations |
| parser = argparse.ArgumentParser() |
| parser.add_argument( |
| '-c', |
| '--chromeos_root', |
| dest='chromeos_root', |
| default='../../', |
| help=('ChromeOS root checkout directory' |
| ' uses ../.. if none given.')) |
| parser.add_argument( |
| '-g', |
| '--gcc_dir', |
| dest='gcc_dir', |
| help='The directory where gcc resides.') |
| parser.add_argument( |
| '--binutils_dir', |
| dest='binutils_dir', |
| help='The directory where binutils resides.') |
| parser.add_argument( |
| '-x', |
| '--gdb_dir', |
| dest='gdb_dir', |
| help='The directory where gdb resides.') |
| parser.add_argument( |
| '-b', |
| '--board', |
| dest='board', |
| default='x86-alex', |
| help='The target board.') |
| parser.add_argument( |
| '-n', |
| '--noincremental', |
| dest='noincremental', |
| default=False, |
| action='store_true', |
| help='Use FEATURES=keepwork to do incremental builds.') |
| parser.add_argument( |
| '--cflags', |
| dest='cflags', |
| default='', |
| help='Build a compiler with specified CFLAGS') |
| parser.add_argument( |
| '--cxxflags', |
| dest='cxxflags', |
| default='', |
| help='Build a compiler with specified CXXFLAGS') |
| parser.add_argument( |
| '--cflags_for_target', |
| dest='cflags_for_target', |
| default='', |
| help='Build the target libraries with specified flags') |
| parser.add_argument( |
| '--cxxflags_for_target', |
| dest='cxxflags_for_target', |
| default='', |
| help='Build the target libraries with specified flags') |
| parser.add_argument( |
| '--ldflags', |
| dest='ldflags', |
| default='', |
| help='Build a compiler with specified LDFLAGS') |
| parser.add_argument( |
| '-d', |
| '--debug', |
| dest='debug', |
| default=False, |
| action='store_true', |
| help='Build a compiler with -g3 -O0 appended to both' |
| ' CFLAGS and CXXFLAGS.') |
| parser.add_argument( |
| '-m', |
| '--mount_only', |
| dest='mount_only', |
| default=False, |
| action='store_true', |
| help='Just mount the tool directories.') |
| parser.add_argument( |
| '-u', |
| '--unmount_only', |
| dest='unmount_only', |
| default=False, |
| action='store_true', |
| help='Just unmount the tool directories.') |
| parser.add_argument( |
| '--extra_use_flags', |
| dest='extra_use_flags', |
| default='', |
| help='Extra flag for USE, to be passed to the ebuild. ' |
| "('multislot' and 'mounted_<tool>' are always passed.)") |
| parser.add_argument( |
| '--gcc_enable_ccache', |
| dest='gcc_enable_ccache', |
| default=False, |
| action='store_true', |
| help='Enable ccache for the gcc invocations') |
| |
| options = parser.parse_args(argv) |
| |
| chromeos_root = misc.CanonicalizePath(options.chromeos_root) |
| if options.gcc_dir: |
| gcc_dir = misc.CanonicalizePath(options.gcc_dir) |
| assert gcc_dir and os.path.isdir(gcc_dir), 'gcc_dir does not exist!' |
| if options.binutils_dir: |
| binutils_dir = misc.CanonicalizePath(options.binutils_dir) |
| assert os.path.isdir(binutils_dir), 'binutils_dir does not exist!' |
| if options.gdb_dir: |
| gdb_dir = misc.CanonicalizePath(options.gdb_dir) |
| assert os.path.isdir(gdb_dir), 'gdb_dir does not exist!' |
| if options.unmount_only: |
| options.mount_only = False |
| elif options.mount_only: |
| options.unmount_only = False |
| build_env = {} |
| if options.cflags: |
| build_env['CFLAGS'] = '`portageq envvar CFLAGS` ' + options.cflags |
| if options.cxxflags: |
| build_env['CXXFLAGS'] = '`portageq envvar CXXFLAGS` ' + options.cxxflags |
| if options.cflags_for_target: |
| build_env['CFLAGS_FOR_TARGET'] = options.cflags_for_target |
| if options.cxxflags_for_target: |
| build_env['CXXFLAGS_FOR_TARGET'] = options.cxxflags_for_target |
| if options.ldflags: |
| build_env['LDFLAGS'] = options.ldflags |
| if options.debug: |
| debug_flags = '-g3 -O0' |
| if 'CFLAGS' in build_env: |
| build_env['CFLAGS'] += ' %s' % (debug_flags) |
| else: |
| build_env['CFLAGS'] = debug_flags |
| if 'CXXFLAGS' in build_env: |
| build_env['CXXFLAGS'] += ' %s' % (debug_flags) |
| else: |
| build_env['CXXFLAGS'] = debug_flags |
| if options.extra_use_flags: |
| build_env['USE'] = options.extra_use_flags |
| |
| # Create toolchain parts |
| toolchain_parts = {} |
| for board in options.board.split(','): |
| if options.gcc_dir: |
| tp = ToolchainPart('gcc', gcc_dir, chromeos_root, board, |
| not options.noincremental, build_env, |
| options.gcc_enable_ccache) |
| toolchain_parts[tp.tag] = tp |
| tp.RunSetupBoardIfNecessary() |
| if options.binutils_dir: |
| tp = ToolchainPart('binutils', binutils_dir, chromeos_root, board, |
| not options.noincremental, build_env) |
| toolchain_parts[tp.tag] = tp |
| tp.RunSetupBoardIfNecessary() |
| if options.gdb_dir: |
| tp = ToolchainPart('gdb', gdb_dir, chromeos_root, board, |
| not options.noincremental, build_env) |
| toolchain_parts[tp.tag] = tp |
| tp.RunSetupBoardIfNecessary() |
| |
| rv = 0 |
| try: |
| for tag in toolchain_parts: |
| tp = toolchain_parts[tag] |
| if options.mount_only or options.unmount_only: |
| tp.MountSources(options.unmount_only) |
| else: |
| rv = rv + tp.Build() |
| finally: |
| print('Exiting...') |
| return rv |
| |
| |
| if __name__ == '__main__': |
| retval = Main(sys.argv[1:]) |
| sys.exit(retval) |
