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![Stephen Warren](/assets/img/avatar_default.png)
When a toolchain invocation fails, an exception is thrown but not caught which then aborts the entire toolchain detection process. To solve this, request that exceptions not be thrown, since the toolchain init code already error-checks the command result. This solves e.g.: - found '/usr/bin/winegcc' Traceback (most recent call last): ... Exception: Error running '/usr/bin/winegcc --version' Change-Id: I579c72ab3b021e38b14132893c3375ea257c74f0 Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (formatted to 80cols)
248 lines
8.3 KiB
Python
248 lines
8.3 KiB
Python
# Copyright (c) 2012 The Chromium OS Authors.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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import re
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import glob
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import os
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import bsettings
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import command
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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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"""
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def __init__(self, fname, test, verbose=False):
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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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"""
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self.gcc = fname
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self.path = os.path.dirname(fname)
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self.cross = os.path.basename(fname)[:-3]
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pos = self.cross.find('-')
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self.arch = self.cross[:pos] if pos != -1 else 'sandbox'
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env = self.MakeEnvironment()
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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 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: ',
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if self.ok:
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print 'OK'
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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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self.priority = self.GetPriority(fname)
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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, 0=highest, 20=lowest.
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"""
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priority_list = ['-elf', '-unknown-linux-gnu', '-linux', '-elf',
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'-none-linux-gnueabi', '-uclinux', '-none-eabi',
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'-gentoo-linux-gnu', '-linux-gnueabi', '-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 prio
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return prio
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def MakeEnvironment(self):
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"""Returns an environment for using the toolchain.
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Thie takes the current environment, adds CROSS_COMPILE and
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augments PATH so that the toolchain will operate correctly.
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"""
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env = dict(os.environ)
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env['CROSS_COMPILE'] = self.cross
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env['PATH'] += (':' + self.path)
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return env
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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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paths: List of paths to check for toolchains (may contain wildcards)
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"""
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def __init__(self):
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self.toolchains = {}
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self.paths = []
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toolchains = bsettings.GetItems('toolchain')
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if not toolchains:
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print ("Warning: No tool chains - please add a [toolchain] section"
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" to your buildman config file %s. See README for details" %
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config_fname)
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for name, value in toolchains:
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if '*' in value:
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self.paths += glob.glob(value)
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else:
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self.paths.append(value)
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self._make_flags = dict(bsettings.GetItems('make-flags'))
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def Add(self, fname, test=True, verbose=False):
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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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"""
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toolchain = Toolchain(fname, test, verbose)
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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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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 path in self.paths:
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if verbose: print " - scanning path '%s'" % path
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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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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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print 'List of available toolchains (%d):' % len(self.toolchains)
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if len(self.toolchains):
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for key, value in sorted(self.toolchains.iteritems()):
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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 name, value in bsettings.GetItems('toolchain-alias'):
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if arch == name:
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arch = value
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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 = arg_str.split(' ')
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i = 0
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while i < len(args):
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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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