646 lines
23 KiB
Python
646 lines
23 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2012 The Chromium OS Authors.
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#
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import re
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import glob
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from html.parser import HTMLParser
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import os
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import sys
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import tempfile
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import urllib.request, urllib.error, urllib.parse
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from buildman import bsettings
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from patman import command
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from patman import terminal
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from patman import tools
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(PRIORITY_FULL_PREFIX, PRIORITY_PREFIX_GCC, PRIORITY_PREFIX_GCC_PATH,
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PRIORITY_CALC) = list(range(4))
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(VAR_CROSS_COMPILE, VAR_PATH, VAR_ARCH, VAR_MAKE_ARGS) = range(4)
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# Simple class to collect links from a page
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class MyHTMLParser(HTMLParser):
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def __init__(self, arch):
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"""Create a new parser
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After the parser runs, self.links will be set to a list of the links
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to .xz archives found in the page, and self.arch_link will be set to
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the one for the given architecture (or None if not found).
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Args:
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arch: Architecture to search for
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"""
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HTMLParser.__init__(self)
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self.arch_link = None
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self.links = []
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self.re_arch = re.compile('[-_]%s-' % arch)
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def handle_starttag(self, tag, attrs):
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if tag == 'a':
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for tag, value in attrs:
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if tag == 'href':
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if value and value.endswith('.xz'):
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self.links.append(value)
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if self.re_arch.search(value):
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self.arch_link = value
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class Toolchain:
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"""A single toolchain
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Public members:
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gcc: Full path to C compiler
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path: Directory path containing C compiler
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cross: Cross compile string, e.g. 'arm-linux-'
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arch: Architecture of toolchain as determined from the first
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component of the filename. E.g. arm-linux-gcc becomes arm
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priority: Toolchain priority (0=highest, 20=lowest)
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override_toolchain: Toolchain to use for sandbox, overriding the normal
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one
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"""
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def __init__(self, fname, test, verbose=False, priority=PRIORITY_CALC,
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arch=None, override_toolchain=None):
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"""Create a new toolchain object.
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Args:
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fname: Filename of the gcc component
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test: True to run the toolchain to test it
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verbose: True to print out the information
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priority: Priority to use for this toolchain, or PRIORITY_CALC to
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calculate it
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"""
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self.gcc = fname
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self.path = os.path.dirname(fname)
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self.override_toolchain = override_toolchain
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# Find the CROSS_COMPILE prefix to use for U-Boot. For example,
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# 'arm-linux-gnueabihf-gcc' turns into 'arm-linux-gnueabihf-'.
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basename = os.path.basename(fname)
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pos = basename.rfind('-')
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self.cross = basename[:pos + 1] if pos != -1 else ''
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# The architecture is the first part of the name
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pos = self.cross.find('-')
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if arch:
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self.arch = arch
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else:
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self.arch = self.cross[:pos] if pos != -1 else 'sandbox'
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if self.arch == 'sandbox' and override_toolchain:
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self.gcc = override_toolchain
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env = self.MakeEnvironment(False)
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# As a basic sanity check, run the C compiler with --version
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cmd = [fname, '--version']
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if priority == PRIORITY_CALC:
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self.priority = self.GetPriority(fname)
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else:
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self.priority = priority
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if test:
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result = command.RunPipe([cmd], capture=True, env=env,
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raise_on_error=False)
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self.ok = result.return_code == 0
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if verbose:
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print('Tool chain test: ', end=' ')
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if self.ok:
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print("OK, arch='%s', priority %d" % (self.arch,
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self.priority))
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else:
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print('BAD')
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print('Command: ', cmd)
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print(result.stdout)
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print(result.stderr)
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else:
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self.ok = True
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def GetPriority(self, fname):
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"""Return the priority of the toolchain.
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Toolchains are ranked according to their suitability by their
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filename prefix.
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Args:
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fname: Filename of toolchain
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Returns:
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Priority of toolchain, PRIORITY_CALC=highest, 20=lowest.
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"""
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priority_list = ['-elf', '-unknown-linux-gnu', '-linux',
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'-none-linux-gnueabi', '-none-linux-gnueabihf', '-uclinux',
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'-none-eabi', '-gentoo-linux-gnu', '-linux-gnueabi',
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'-linux-gnueabihf', '-le-linux', '-uclinux']
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for prio in range(len(priority_list)):
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if priority_list[prio] in fname:
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return PRIORITY_CALC + prio
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return PRIORITY_CALC + prio
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def GetWrapper(self, show_warning=True):
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"""Get toolchain wrapper from the setting file.
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"""
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value = ''
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for name, value in bsettings.GetItems('toolchain-wrapper'):
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if not value:
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print("Warning: Wrapper not found")
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if value:
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value = value + ' '
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return value
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def GetEnvArgs(self, which):
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"""Get an environment variable/args value based on the the toolchain
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Args:
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which: VAR_... value to get
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Returns:
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Value of that environment variable or arguments
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"""
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wrapper = self.GetWrapper()
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if which == VAR_CROSS_COMPILE:
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return wrapper + os.path.join(self.path, self.cross)
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elif which == VAR_PATH:
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return self.path
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elif which == VAR_ARCH:
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return self.arch
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elif which == VAR_MAKE_ARGS:
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args = self.MakeArgs()
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if args:
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return ' '.join(args)
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return ''
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else:
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raise ValueError('Unknown arg to GetEnvArgs (%d)' % which)
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def MakeEnvironment(self, full_path):
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"""Returns an environment for using the toolchain.
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Thie takes the current environment and adds CROSS_COMPILE so that
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the tool chain will operate correctly. This also disables localized
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output and possibly unicode encoded output of all build tools by
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adding LC_ALL=C.
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Note that os.environb is used to obtain the environment, since in some
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cases the environment many contain non-ASCII characters and we see
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errors like:
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UnicodeEncodeError: 'utf-8' codec can't encode characters in position
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569-570: surrogates not allowed
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Args:
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full_path: Return the full path in CROSS_COMPILE and don't set
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PATH
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Returns:
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Dict containing the (bytes) environment to use. This is based on the
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current environment, with changes as needed to CROSS_COMPILE, PATH
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and LC_ALL.
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"""
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env = dict(os.environb)
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wrapper = self.GetWrapper()
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if self.override_toolchain:
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# We'll use MakeArgs() to provide this
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pass
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elif full_path:
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env[b'CROSS_COMPILE'] = tools.ToBytes(
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wrapper + os.path.join(self.path, self.cross))
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else:
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env[b'CROSS_COMPILE'] = tools.ToBytes(wrapper + self.cross)
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env[b'PATH'] = tools.ToBytes(self.path) + b':' + env[b'PATH']
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env[b'LC_ALL'] = b'C'
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return env
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def MakeArgs(self):
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"""Create the 'make' arguments for a toolchain
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This is only used when the toolchain is being overridden. Since the
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U-Boot Makefile sets CC and HOSTCC explicitly we cannot rely on the
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environment (and MakeEnvironment()) to override these values. This
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function returns the arguments to accomplish this.
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Returns:
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List of arguments to pass to 'make'
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"""
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if self.override_toolchain:
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return ['HOSTCC=%s' % self.override_toolchain,
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'CC=%s' % self.override_toolchain]
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return []
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class Toolchains:
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"""Manage a list of toolchains for building U-Boot
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We select one toolchain for each architecture type
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Public members:
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toolchains: Dict of Toolchain objects, keyed by architecture name
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prefixes: Dict of prefixes to check, keyed by architecture. This can
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be a full path and toolchain prefix, for example
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{'x86', 'opt/i386-linux/bin/i386-linux-'}, or the name of
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something on the search path, for example
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{'arm', 'arm-linux-gnueabihf-'}. Wildcards are not supported.
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paths: List of paths to check for toolchains (may contain wildcards)
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"""
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def __init__(self, override_toolchain=None):
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self.toolchains = {}
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self.prefixes = {}
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self.paths = []
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self.override_toolchain = override_toolchain
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self._make_flags = dict(bsettings.GetItems('make-flags'))
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def GetPathList(self, show_warning=True):
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"""Get a list of available toolchain paths
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Args:
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show_warning: True to show a warning if there are no tool chains.
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Returns:
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List of strings, each a path to a toolchain mentioned in the
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[toolchain] section of the settings file.
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"""
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toolchains = bsettings.GetItems('toolchain')
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if show_warning and not toolchains:
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print(("Warning: No tool chains. Please run 'buildman "
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"--fetch-arch all' to download all available toolchains, or "
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"add a [toolchain] section to your buildman config file "
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"%s. See README for details" %
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bsettings.config_fname))
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paths = []
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for name, value in toolchains:
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if '*' in value:
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paths += glob.glob(value)
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else:
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paths.append(value)
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return paths
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def GetSettings(self, show_warning=True):
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"""Get toolchain settings from the settings file.
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Args:
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show_warning: True to show a warning if there are no tool chains.
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"""
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self.prefixes = bsettings.GetItems('toolchain-prefix')
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self.paths += self.GetPathList(show_warning)
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def Add(self, fname, test=True, verbose=False, priority=PRIORITY_CALC,
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arch=None):
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"""Add a toolchain to our list
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We select the given toolchain as our preferred one for its
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architecture if it is a higher priority than the others.
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Args:
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fname: Filename of toolchain's gcc driver
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test: True to run the toolchain to test it
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priority: Priority to use for this toolchain
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arch: Toolchain architecture, or None if not known
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"""
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toolchain = Toolchain(fname, test, verbose, priority, arch,
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self.override_toolchain)
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add_it = toolchain.ok
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if toolchain.arch in self.toolchains:
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add_it = (toolchain.priority <
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self.toolchains[toolchain.arch].priority)
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if add_it:
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self.toolchains[toolchain.arch] = toolchain
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elif verbose:
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print(("Toolchain '%s' at priority %d will be ignored because "
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"another toolchain for arch '%s' has priority %d" %
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(toolchain.gcc, toolchain.priority, toolchain.arch,
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self.toolchains[toolchain.arch].priority)))
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def ScanPath(self, path, verbose):
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"""Scan a path for a valid toolchain
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Args:
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path: Path to scan
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verbose: True to print out progress information
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Returns:
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Filename of C compiler if found, else None
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"""
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fnames = []
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for subdir in ['.', 'bin', 'usr/bin']:
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dirname = os.path.join(path, subdir)
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if verbose: print(" - looking in '%s'" % dirname)
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for fname in glob.glob(dirname + '/*gcc'):
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if verbose: print(" - found '%s'" % fname)
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fnames.append(fname)
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return fnames
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def ScanPathEnv(self, fname):
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"""Scan the PATH environment variable for a given filename.
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Args:
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fname: Filename to scan for
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Returns:
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List of matching pathanames, or [] if none
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"""
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pathname_list = []
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for path in os.environ["PATH"].split(os.pathsep):
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path = path.strip('"')
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pathname = os.path.join(path, fname)
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if os.path.exists(pathname):
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pathname_list.append(pathname)
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return pathname_list
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def Scan(self, verbose):
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"""Scan for available toolchains and select the best for each arch.
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We look for all the toolchains we can file, figure out the
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architecture for each, and whether it works. Then we select the
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highest priority toolchain for each arch.
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Args:
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verbose: True to print out progress information
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"""
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if verbose: print('Scanning for tool chains')
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for name, value in self.prefixes:
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if verbose: print(" - scanning prefix '%s'" % value)
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if os.path.exists(value):
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self.Add(value, True, verbose, PRIORITY_FULL_PREFIX, name)
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continue
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fname = value + 'gcc'
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if os.path.exists(fname):
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self.Add(fname, True, verbose, PRIORITY_PREFIX_GCC, name)
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continue
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fname_list = self.ScanPathEnv(fname)
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for f in fname_list:
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self.Add(f, True, verbose, PRIORITY_PREFIX_GCC_PATH, name)
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if not fname_list:
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raise ValueError("No tool chain found for prefix '%s'" %
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value)
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for path in self.paths:
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if verbose: print(" - scanning path '%s'" % path)
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fnames = self.ScanPath(path, verbose)
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for fname in fnames:
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self.Add(fname, True, verbose)
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def List(self):
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"""List out the selected toolchains for each architecture"""
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col = terminal.Color()
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print(col.Color(col.BLUE, 'List of available toolchains (%d):' %
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len(self.toolchains)))
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if len(self.toolchains):
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for key, value in sorted(self.toolchains.items()):
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print('%-10s: %s' % (key, value.gcc))
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else:
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print('None')
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def Select(self, arch):
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"""Returns the toolchain for a given architecture
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Args:
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args: Name of architecture (e.g. 'arm', 'ppc_8xx')
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returns:
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toolchain object, or None if none found
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"""
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for tag, value in bsettings.GetItems('toolchain-alias'):
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if arch == tag:
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for alias in value.split():
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if alias in self.toolchains:
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return self.toolchains[alias]
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if not arch in self.toolchains:
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raise ValueError("No tool chain found for arch '%s'" % arch)
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return self.toolchains[arch]
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def ResolveReferences(self, var_dict, args):
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"""Resolve variable references in a string
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This converts ${blah} within the string to the value of blah.
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This function works recursively.
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Args:
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var_dict: Dictionary containing variables and their values
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args: String containing make arguments
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Returns:
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Resolved string
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>>> bsettings.Setup()
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>>> tcs = Toolchains()
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>>> tcs.Add('fred', False)
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>>> var_dict = {'oblique' : 'OBLIQUE', 'first' : 'fi${second}rst', \
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'second' : '2nd'}
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>>> tcs.ResolveReferences(var_dict, 'this=${oblique}_set')
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'this=OBLIQUE_set'
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>>> tcs.ResolveReferences(var_dict, 'this=${oblique}_set${first}nd')
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'this=OBLIQUE_setfi2ndrstnd'
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"""
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re_var = re.compile('(\$\{[-_a-z0-9A-Z]{1,}\})')
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while True:
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m = re_var.search(args)
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if not m:
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break
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lookup = m.group(0)[2:-1]
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value = var_dict.get(lookup, '')
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args = args[:m.start(0)] + value + args[m.end(0):]
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return args
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def GetMakeArguments(self, board):
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"""Returns 'make' arguments for a given board
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The flags are in a section called 'make-flags'. Flags are named
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after the target they represent, for example snapper9260=TESTING=1
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will pass TESTING=1 to make when building the snapper9260 board.
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References to other boards can be added in the string also. For
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example:
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[make-flags]
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at91-boards=ENABLE_AT91_TEST=1
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snapper9260=${at91-boards} BUILD_TAG=442
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snapper9g45=${at91-boards} BUILD_TAG=443
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This will return 'ENABLE_AT91_TEST=1 BUILD_TAG=442' for snapper9260
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and 'ENABLE_AT91_TEST=1 BUILD_TAG=443' for snapper9g45.
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A special 'target' variable is set to the board target.
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Args:
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board: Board object for the board to check.
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Returns:
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'make' flags for that board, or '' if none
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"""
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self._make_flags['target'] = board.target
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arg_str = self.ResolveReferences(self._make_flags,
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self._make_flags.get(board.target, ''))
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args = re.findall("(?:\".*?\"|\S)+", arg_str)
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i = 0
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while i < len(args):
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args[i] = args[i].replace('"', '')
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if not args[i]:
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del args[i]
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else:
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i += 1
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return args
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def LocateArchUrl(self, fetch_arch):
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"""Find a toolchain available online
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Look in standard places for available toolchains. At present the
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only standard place is at kernel.org.
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Args:
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arch: Architecture to look for, or 'list' for all
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Returns:
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If fetch_arch is 'list', a tuple:
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Machine architecture (e.g. x86_64)
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List of toolchains
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else
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URL containing this toolchain, if avaialble, else None
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"""
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arch = command.OutputOneLine('uname', '-m')
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if arch == 'aarch64':
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arch = 'arm64'
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base = 'https://www.kernel.org/pub/tools/crosstool/files/bin'
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versions = ['11.1.0', '9.2.0', '7.3.0', '6.4.0', '4.9.4']
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links = []
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for version in versions:
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url = '%s/%s/%s/' % (base, arch, version)
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print('Checking: %s' % url)
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response = urllib.request.urlopen(url)
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html = tools.ToString(response.read())
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parser = MyHTMLParser(fetch_arch)
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parser.feed(html)
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if fetch_arch == 'list':
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links += parser.links
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elif parser.arch_link:
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return url + parser.arch_link
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if fetch_arch == 'list':
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return arch, links
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return None
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def Download(self, url):
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"""Download a file to a temporary directory
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|
|
|
Args:
|
|
url: URL to download
|
|
Returns:
|
|
Tuple:
|
|
Temporary directory name
|
|
Full path to the downloaded archive file in that directory,
|
|
or None if there was an error while downloading
|
|
"""
|
|
print('Downloading: %s' % url)
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leaf = url.split('/')[-1]
|
|
tmpdir = tempfile.mkdtemp('.buildman')
|
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response = urllib.request.urlopen(url)
|
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fname = os.path.join(tmpdir, leaf)
|
|
fd = open(fname, 'wb')
|
|
meta = response.info()
|
|
size = int(meta.get('Content-Length'))
|
|
done = 0
|
|
block_size = 1 << 16
|
|
status = ''
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|
|
# Read the file in chunks and show progress as we go
|
|
while True:
|
|
buffer = response.read(block_size)
|
|
if not buffer:
|
|
print(chr(8) * (len(status) + 1), '\r', end=' ')
|
|
break
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|
|
done += len(buffer)
|
|
fd.write(buffer)
|
|
status = r'%10d MiB [%3d%%]' % (done // 1024 // 1024,
|
|
done * 100 // size)
|
|
status = status + chr(8) * (len(status) + 1)
|
|
print(status, end=' ')
|
|
sys.stdout.flush()
|
|
fd.close()
|
|
if done != size:
|
|
print('Error, failed to download')
|
|
os.remove(fname)
|
|
fname = None
|
|
return tmpdir, fname
|
|
|
|
def Unpack(self, fname, dest):
|
|
"""Unpack a tar file
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|
|
|
Args:
|
|
fname: Filename to unpack
|
|
dest: Destination directory
|
|
Returns:
|
|
Directory name of the first entry in the archive, without the
|
|
trailing /
|
|
"""
|
|
stdout = command.Output('tar', 'xvfJ', fname, '-C', dest)
|
|
dirs = stdout.splitlines()[1].split('/')[:2]
|
|
return '/'.join(dirs)
|
|
|
|
def TestSettingsHasPath(self, path):
|
|
"""Check if buildman will find this toolchain
|
|
|
|
Returns:
|
|
True if the path is in settings, False if not
|
|
"""
|
|
paths = self.GetPathList(False)
|
|
return path in paths
|
|
|
|
def ListArchs(self):
|
|
"""List architectures with available toolchains to download"""
|
|
host_arch, archives = self.LocateArchUrl('list')
|
|
re_arch = re.compile('[-a-z0-9.]*[-_]([^-]*)-.*')
|
|
arch_set = set()
|
|
for archive in archives:
|
|
# Remove the host architecture from the start
|
|
arch = re_arch.match(archive[len(host_arch):])
|
|
if arch:
|
|
if arch.group(1) != '2.0' and arch.group(1) != '64':
|
|
arch_set.add(arch.group(1))
|
|
return sorted(arch_set)
|
|
|
|
def FetchAndInstall(self, arch):
|
|
"""Fetch and install a new toolchain
|
|
|
|
arch:
|
|
Architecture to fetch, or 'list' to list
|
|
"""
|
|
# Fist get the URL for this architecture
|
|
col = terminal.Color()
|
|
print(col.Color(col.BLUE, "Downloading toolchain for arch '%s'" % arch))
|
|
url = self.LocateArchUrl(arch)
|
|
if not url:
|
|
print(("Cannot find toolchain for arch '%s' - use 'list' to list" %
|
|
arch))
|
|
return 2
|
|
home = os.environ['HOME']
|
|
dest = os.path.join(home, '.buildman-toolchains')
|
|
if not os.path.exists(dest):
|
|
os.mkdir(dest)
|
|
|
|
# Download the tar file for this toolchain and unpack it
|
|
tmpdir, tarfile = self.Download(url)
|
|
if not tarfile:
|
|
return 1
|
|
print(col.Color(col.GREEN, 'Unpacking to: %s' % dest), end=' ')
|
|
sys.stdout.flush()
|
|
path = self.Unpack(tarfile, dest)
|
|
os.remove(tarfile)
|
|
os.rmdir(tmpdir)
|
|
print()
|
|
|
|
# Check that the toolchain works
|
|
print(col.Color(col.GREEN, 'Testing'))
|
|
dirpath = os.path.join(dest, path)
|
|
compiler_fname_list = self.ScanPath(dirpath, True)
|
|
if not compiler_fname_list:
|
|
print('Could not locate C compiler - fetch failed.')
|
|
return 1
|
|
if len(compiler_fname_list) != 1:
|
|
print(col.Color(col.RED, 'Warning, ambiguous toolchains: %s' %
|
|
', '.join(compiler_fname_list)))
|
|
toolchain = Toolchain(compiler_fname_list[0], True, True)
|
|
|
|
# Make sure that it will be found by buildman
|
|
if not self.TestSettingsHasPath(dirpath):
|
|
print(("Adding 'download' to config file '%s'" %
|
|
bsettings.config_fname))
|
|
bsettings.SetItem('toolchain', 'download', '%s/*/*' % dest)
|
|
return 0
|