#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2010-2012 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

#
# This code is based on what ever doco about spec files I could find and
# RTEMS project's spec files.
#

import os

import execute

def load():
    uname = os.uname()
    sysctl = '/usr/sbin/sysctl '
    e = execute.capture_execution()
    exit_code, proc, output = e.shell(sysctl + 'hw.ncpu')
    if exit_code == 0:
        ncpus = output.split(' ')[1].strip()
    else:
        ncpus = '1'
    defines = {
        '_ncpus':           ('none',    'none',     ncpus),
        '_os':              ('none',    'none',     'darwin'),
        '_host':            ('triplet', 'required', uname[4] + '-apple-darwin' + uname[2]),
        '_host_vendor':     ('none',    'none',     'apple'),
        '_host_os':         ('none',    'none',     'darwin'),
        '_host_cpu':        ('none',    'none',     uname[4]),
        '_host_alias':      ('none',    'none',     '%{nil}'),
        '_host_arch':       ('none',    'none',     uname[4]),
        '_usr':             ('dir',     'optional', '/usr/local'),
        '_var':             ('dir',     'optional', '/usr/local/var'),
        '_prefix':          ('dir',     'optional', '%{_usr}'),
        '__ldconfig':       ('exe',     'none',     ''),
        '__cvs':            ('exe',     'required', 'cvs'),
        '__xz':             ('exe',     'required', '%{_usr}/bin/xz'),
        'with_zlib':        ('none',    'none',     '--with-zlib=no'),
        '_forced_static':   ('none',    'none',     ''),
        '_extra_path':      ('none',    'none',     '%{_sbdir}/bin'),
        '_ld_library_path': ('none',    'none',     'DYLD_LIBRARY_PATH')
        }

    version = uname[2]
    if version.find('.'):
        version = version.split('.')[0]
        if int(version) >= 13:
            defines['__cc'] = ('exe',     'required', '/usr/bin/cc')
            defines['__cxx'] = ('exe',     'required', '/usr/bin/c++')

    defines['_build']        = defines['_host']
    defines['_build_vendor'] = defines['_host_vendor']
    defines['_build_os']     = defines['_host_os']
    defines['_build_cpu']    = defines['_host_cpu']
    defines['_build_alias']  = defines['_host_alias']
    defines['_build_arch']   = defines['_host_arch']

    return defines

if __name__ == '__main__':
    import pprint
    pprint.pprint(load())