#
# 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 pprint
import os

import execute

def load():
    uname = os.uname()
    smp_mflags = ''
    processors = '/bin/grep processor /proc/cpuinfo'
    e = execute.capture_execution()
    exit_code, proc, output = e.shell(processors)
    if exit_code == 0:
        cpus = 0
        for l in output.split('\n'):
            count = l.split(':')[1].strip()
            if count > cpus:
                cpus = int(count)
        if cpus > 0:
            smp_mflags = '-j%d' % (cpus)
    defines = {
        '_os':                     'linux',
        '_host':                   uname[4] + '-linux-gnu',
        '_host_vendor':            'gnu',
        '_host_os':                'linux',
        '_host_cpu':               uname[4],
        '_host_alias':             '%{nil}',
        '_host_arch':              uname[4],
        '_usr':                    '/usr',
        '_var':                    '/usr/var',
        'optflags':                '-O2 -fasynchronous-unwind-tables',
        '_smp_mflags':             smp_mflags,
        '__bzip2':                 '/usr/bin/bzip2',
        '__gzip':                  '/bin/gzip',
        '__tar':                   '/bin/tar'
        }
    return defines

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