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337 lines
13 KiB
337 lines
13 KiB
#!/usr/bin/python2 |
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# |
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# Copyright 2010 The Chromium OS Authors. All rights reserved. |
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# Use of this source code is governed by a BSD-style license that can be |
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# found in the LICENSE file. |
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"""Script to build the ChromeOS toolchain. |
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This script sets up the toolchain if you give it the gcctools directory. |
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""" |
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from __future__ import print_function |
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__author__ = 'asharif@google.com (Ahmad Sharif)' |
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import argparse |
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import getpass |
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import os |
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import sys |
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import tempfile |
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import tc_enter_chroot |
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from cros_utils import command_executer |
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from cros_utils import constants |
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from cros_utils import misc |
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class ToolchainPart(object): |
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"""Class to hold the toolchain pieces.""" |
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def __init__(self, |
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name, |
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source_path, |
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chromeos_root, |
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board, |
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incremental, |
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build_env, |
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gcc_enable_ccache=False): |
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self._name = name |
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self._source_path = misc.CanonicalizePath(source_path) |
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self._chromeos_root = chromeos_root |
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self._board = board |
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self._ctarget = misc.GetCtargetFromBoard(self._board, self._chromeos_root) |
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self._gcc_libs_dest = misc.GetGccLibsDestForBoard(self._board, |
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self._chromeos_root) |
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self.tag = '%s-%s' % (name, self._ctarget) |
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self._ce = command_executer.GetCommandExecuter() |
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self._mask_file = os.path.join(self._chromeos_root, 'chroot', |
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'etc/portage/package.mask/cross-%s' % |
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self._ctarget) |
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self._new_mask_file = None |
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self._chroot_source_path = os.path.join(constants.MOUNTED_TOOLCHAIN_ROOT, |
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self._name).lstrip('/') |
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self._incremental = incremental |
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self._build_env = build_env |
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self._gcc_enable_ccache = gcc_enable_ccache |
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def RunSetupBoardIfNecessary(self): |
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cross_symlink = os.path.join(self._chromeos_root, 'chroot', |
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'usr/local/bin/emerge-%s' % self._board) |
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if not os.path.exists(cross_symlink): |
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command = ('%s/setup_board --board=%s' % |
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(misc.CHROMEOS_SCRIPTS_DIR, self._board)) |
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self._ce.ChrootRunCommand(self._chromeos_root, command) |
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def Build(self): |
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rv = 1 |
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try: |
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self.UninstallTool() |
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self.MoveMaskFile() |
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self.MountSources(False) |
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self.RemoveCompiledFile() |
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rv = self.BuildTool() |
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finally: |
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self.UnMoveMaskFile() |
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return rv |
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def RemoveCompiledFile(self): |
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compiled_file = os.path.join(self._chromeos_root, 'chroot', |
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'var/tmp/portage/cross-%s' % self._ctarget, |
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'%s-9999' % self._name, '.compiled') |
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command = 'rm -f %s' % compiled_file |
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self._ce.RunCommand(command) |
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def MountSources(self, unmount_source): |
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mount_points = [] |
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mounted_source_path = os.path.join(self._chromeos_root, 'chroot', |
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self._chroot_source_path) |
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src_mp = tc_enter_chroot.MountPoint(self._source_path, mounted_source_path, |
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getpass.getuser(), 'ro') |
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mount_points.append(src_mp) |
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build_suffix = 'build-%s' % self._ctarget |
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build_dir = '%s-%s' % (self._source_path, build_suffix) |
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if not self._incremental and os.path.exists(build_dir): |
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command = 'rm -rf %s/*' % build_dir |
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self._ce.RunCommand(command) |
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# Create a -build directory for the objects. |
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command = 'mkdir -p %s' % build_dir |
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self._ce.RunCommand(command) |
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mounted_build_dir = os.path.join(self._chromeos_root, 'chroot', '%s-%s' % |
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(self._chroot_source_path, build_suffix)) |
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build_mp = tc_enter_chroot.MountPoint(build_dir, mounted_build_dir, |
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getpass.getuser()) |
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mount_points.append(build_mp) |
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if unmount_source: |
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unmount_statuses = [mp.UnMount() == 0 for mp in mount_points] |
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assert all(unmount_statuses), 'Could not unmount all mount points!' |
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else: |
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mount_statuses = [mp.DoMount() == 0 for mp in mount_points] |
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if not all(mount_statuses): |
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mounted = [mp |
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for mp, status in zip(mount_points, mount_statuses) |
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if status] |
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unmount_statuses = [mp.UnMount() == 0 for mp in mounted] |
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assert all(unmount_statuses), 'Could not unmount all mount points!' |
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def UninstallTool(self): |
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command = 'sudo CLEAN_DELAY=0 emerge -C cross-%s/%s' % (self._ctarget, |
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self._name) |
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self._ce.ChrootRunCommand(self._chromeos_root, command) |
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def BuildTool(self): |
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env = self._build_env |
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# FEATURES=buildpkg adds minutes of time so we disable it. |
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# TODO(shenhan): keep '-sandbox' for a while for compatibility, then remove |
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# it after a while. |
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features = ('nostrip userpriv userfetch -usersandbox -sandbox noclean ' |
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'-buildpkg') |
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env['FEATURES'] = features |
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if self._incremental: |
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env['FEATURES'] += ' keepwork' |
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if 'USE' in env: |
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env['USE'] += ' multislot mounted_%s' % self._name |
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else: |
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env['USE'] = 'multislot mounted_%s' % self._name |
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# Disable ccache in our compilers. cache may be problematic for us. |
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# It ignores compiler environments settings and it is not clear if |
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# the cache hit algorithm verifies all the compiler binaries or |
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# just the driver. |
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if self._name == 'gcc' and not self._gcc_enable_ccache: |
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env['USE'] += ' -wrapper_ccache' |
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env['%s_SOURCE_PATH' % self._name.upper()] = ( |
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os.path.join('/', self._chroot_source_path)) |
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env['ACCEPT_KEYWORDS'] = '~*' |
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env_string = ' '.join(["%s=\"%s\"" % var for var in env.items()]) |
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command = 'emerge =cross-%s/%s-9999' % (self._ctarget, self._name) |
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full_command = 'sudo %s %s' % (env_string, command) |
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rv = self._ce.ChrootRunCommand(self._chromeos_root, full_command) |
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if rv != 0: |
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return rv |
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if self._name == 'gcc': |
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command = ('sudo cp -r /usr/lib/gcc/%s %s' % |
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(self._ctarget, self._gcc_libs_dest)) |
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rv = self._ce.ChrootRunCommand(self._chromeos_root, command) |
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return rv |
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def MoveMaskFile(self): |
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self._new_mask_file = None |
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if os.path.isfile(self._mask_file): |
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self._new_mask_file = tempfile.mktemp() |
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command = 'sudo mv %s %s' % (self._mask_file, self._new_mask_file) |
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self._ce.RunCommand(command) |
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def UnMoveMaskFile(self): |
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if self._new_mask_file: |
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command = 'sudo mv %s %s' % (self._new_mask_file, self._mask_file) |
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self._ce.RunCommand(command) |
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def Main(argv): |
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"""The main function.""" |
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# Common initializations |
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parser = argparse.ArgumentParser() |
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parser.add_argument('-c', |
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'--chromeos_root', |
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dest='chromeos_root', |
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default='../../', |
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help=('ChromeOS root checkout directory' |
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' uses ../.. if none given.')) |
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parser.add_argument('-g', |
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'--gcc_dir', |
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dest='gcc_dir', |
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help='The directory where gcc resides.') |
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parser.add_argument('--binutils_dir', |
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dest='binutils_dir', |
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help='The directory where binutils resides.') |
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parser.add_argument('-x', |
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'--gdb_dir', |
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dest='gdb_dir', |
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help='The directory where gdb resides.') |
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parser.add_argument('-b', |
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'--board', |
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dest='board', |
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default='x86-alex', |
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help='The target board.') |
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parser.add_argument('-n', |
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'--noincremental', |
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dest='noincremental', |
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default=False, |
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action='store_true', |
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help='Use FEATURES=keepwork to do incremental builds.') |
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parser.add_argument('--cflags', |
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dest='cflags', |
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default='', |
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help='Build a compiler with specified CFLAGS') |
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parser.add_argument('--cxxflags', |
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dest='cxxflags', |
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default='', |
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help='Build a compiler with specified CXXFLAGS') |
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parser.add_argument('--cflags_for_target', |
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dest='cflags_for_target', |
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default='', |
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help='Build the target libraries with specified flags') |
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parser.add_argument('--cxxflags_for_target', |
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dest='cxxflags_for_target', |
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default='', |
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help='Build the target libraries with specified flags') |
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parser.add_argument('--ldflags', |
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dest='ldflags', |
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default='', |
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help='Build a compiler with specified LDFLAGS') |
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parser.add_argument('-d', |
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'--debug', |
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dest='debug', |
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default=False, |
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action='store_true', |
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help='Build a compiler with -g3 -O0 appended to both' |
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' CFLAGS and CXXFLAGS.') |
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parser.add_argument('-m', |
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'--mount_only', |
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dest='mount_only', |
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default=False, |
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action='store_true', |
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help='Just mount the tool directories.') |
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parser.add_argument('-u', |
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'--unmount_only', |
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dest='unmount_only', |
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default=False, |
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action='store_true', |
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help='Just unmount the tool directories.') |
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parser.add_argument('--extra_use_flags', |
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dest='extra_use_flags', |
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default='', |
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help='Extra flag for USE, to be passed to the ebuild. ' |
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"('multislot' and 'mounted_<tool>' are always passed.)") |
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parser.add_argument('--gcc_enable_ccache', |
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dest='gcc_enable_ccache', |
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default=False, |
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action='store_true', |
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help='Enable ccache for the gcc invocations') |
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options = parser.parse_args(argv) |
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chromeos_root = misc.CanonicalizePath(options.chromeos_root) |
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if options.gcc_dir: |
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gcc_dir = misc.CanonicalizePath(options.gcc_dir) |
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assert gcc_dir and os.path.isdir(gcc_dir), 'gcc_dir does not exist!' |
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if options.binutils_dir: |
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binutils_dir = misc.CanonicalizePath(options.binutils_dir) |
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assert os.path.isdir(binutils_dir), 'binutils_dir does not exist!' |
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if options.gdb_dir: |
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gdb_dir = misc.CanonicalizePath(options.gdb_dir) |
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assert os.path.isdir(gdb_dir), 'gdb_dir does not exist!' |
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if options.unmount_only: |
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options.mount_only = False |
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elif options.mount_only: |
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options.unmount_only = False |
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build_env = {} |
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if options.cflags: |
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build_env['CFLAGS'] = '`portageq envvar CFLAGS` ' + options.cflags |
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if options.cxxflags: |
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build_env['CXXFLAGS'] = '`portageq envvar CXXFLAGS` ' + options.cxxflags |
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if options.cflags_for_target: |
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build_env['CFLAGS_FOR_TARGET'] = options.cflags_for_target |
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if options.cxxflags_for_target: |
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build_env['CXXFLAGS_FOR_TARGET'] = options.cxxflags_for_target |
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if options.ldflags: |
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build_env['LDFLAGS'] = options.ldflags |
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if options.debug: |
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debug_flags = '-g3 -O0' |
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if 'CFLAGS' in build_env: |
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build_env['CFLAGS'] += ' %s' % (debug_flags) |
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else: |
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build_env['CFLAGS'] = debug_flags |
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if 'CXXFLAGS' in build_env: |
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build_env['CXXFLAGS'] += ' %s' % (debug_flags) |
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else: |
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build_env['CXXFLAGS'] = debug_flags |
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if options.extra_use_flags: |
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build_env['USE'] = options.extra_use_flags |
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# Create toolchain parts |
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toolchain_parts = {} |
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for board in options.board.split(','): |
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if options.gcc_dir: |
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tp = ToolchainPart('gcc', gcc_dir, chromeos_root, board, |
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not options.noincremental, build_env, |
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options.gcc_enable_ccache) |
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toolchain_parts[tp.tag] = tp |
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tp.RunSetupBoardIfNecessary() |
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if options.binutils_dir: |
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tp = ToolchainPart('binutils', binutils_dir, chromeos_root, board, |
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not options.noincremental, build_env) |
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toolchain_parts[tp.tag] = tp |
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tp.RunSetupBoardIfNecessary() |
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if options.gdb_dir: |
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tp = ToolchainPart('gdb', gdb_dir, chromeos_root, board, |
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not options.noincremental, build_env) |
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toolchain_parts[tp.tag] = tp |
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tp.RunSetupBoardIfNecessary() |
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rv = 0 |
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try: |
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for tag in toolchain_parts: |
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tp = toolchain_parts[tag] |
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if options.mount_only or options.unmount_only: |
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tp.MountSources(options.unmount_only) |
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else: |
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rv = rv + tp.Build() |
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finally: |
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print('Exiting...') |
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return rv |
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if __name__ == '__main__': |
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retval = Main(sys.argv[1:]) |
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sys.exit(retval)
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