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# Copyright 2013 Ben Longbons <b.r.longbons@gmail.com>
#
# This file is part of attoconf.
#
# attoconf is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# attoconf is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with attoconf. If not, see <http://www.gnu.org/licenses/>.
from __future__ import print_function, division, absolute_import
from ..classy import ClassyProject
def triple(s):
# Triples do not, in fact, follow a regular pattern.
# Some have only two segments, some appear to have four ...
# Also, sometimes a wrong thing is used as a triple.
# All we *really* care about is generating the tool names.
if s.startswith('-') or s.endswith('-') or '-' not in s[1:-1]:
raise ValueError('Probably not a triple')
return s
def host(build, HOST):
if HOST is None:
BUILD, origin = build.vars['BUILD']
if origin != 'default':
origin = 'derived from BUILD'
build.vars['HOST'] = (BUILD, origin)
def target(build, TARGET):
if TARGET is None:
HOST, origin = build.vars['HOST']
if origin != 'default':
origin = 'derived from HOST'
build.vars['TARGET'] = (HOST, origin)
class Arches2(ClassyProject):
__slots__ = ()
def arches(self):
super(Arches2, self).arches()
self.add_help('System types:', hidden=False)
self.add_option('--build', init=None,
type=triple, check=None,
help='configure for building on BUILD', hidden=False,
help_def='native')
self.add_option('--host', init=None,
type=triple, check=host,
help='cross-compile to build programs to run on HOST',
hidden=False, help_def='BUILD')
# TODO figure out the mro implications when I use this
class Arches3(Arches2):
__slots__ = ()
def arches(self):
super(Arches3, self).arches()
self.add_option('--target', init=None,
type=triple, check=target,
help='configure for building compilers for TARGET',
hidden=False, help_def='HOST')
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