Bootstrap for rtems.git

Chris Johns chrisj at rtems.org
Mon Sep 2 05:22:33 UTC 2019


Hi,

The sb-bootstrap command has proved to be useful. The attached rtems-bootsrap is
is a stand alone version that could be added to the top directory of rtems.git.
Should I create a patch to do this?

Chris
-------------- next part --------------
#! /usr/bin/env python

#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2013-2016 Chris Johns (chrisj at 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.
#

from __future__ import print_function

import argparse
import datetime
import multiprocessing
import operator
import os
import re
import sys
import threading
import time

version = "1.0"

class error(Exception):
    """Base class for Builder exceptions."""
    def set_output(self, msg):
        self.msg = msg
    def __str__(self):
        return self.msg

class general_error(error):
    """Raise for a general error."""
    def __init__(self, what):
        self.set_output('error: ' + str(what))

def _collect(path_, file):
    confs = []
    for root, dirs, files in os.walk(path_, topdown = True):
        for f in files:
            if f == file:
                confs += [os.path.join(root, f)]
    return confs

def _grep(file, pattern):
    rege = re.compile(pattern)
    try:
        f = open(file, 'r')
        matches = [rege.match(l) != None for l in f.readlines()]
        f.close()
    except IOError as err:
        raise general_error('reading: %s' % (file))
    return True in matches

class command:

    def __init__(self, cmd, cwd):
        self.exit_code = 0
        self.thread = None
        self.output = None
        self.cmd = cmd
        self.cwd = cwd
        self.result = None

    def runner(self):

        import subprocess

        #
        # Support Python 2.6
        #
        if "check_output" not in dir(subprocess):
            def f(*popenargs, **kwargs):
                if 'stdout' in kwargs:
                    raise ValueError('stdout argument not allowed, it will be overridden.')
                process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
                output, unused_err = process.communicate()
                retcode = process.poll()
                if retcode:
                    cmd = kwargs.get("args")
                    if cmd is None:
                        cmd = popenargs[0]
                    raise subprocess.CalledProcessError(retcode, cmd)
                return output
            subprocess.check_output = f

        self.start_time = datetime.datetime.now()
        self.exit_code = 0
        try:
            try:
                if os.name == 'nt':
                    cmd = ['sh', '-c'] + self.cmd
                else:
                    cmd = self.cmd
                self.output = subprocess.check_output(cmd, cwd = self.cwd)
            except subprocess.CalledProcessError as cpe:
                self.exit_code = cpe.returncode
                self.output = cpe.output
            except OSError as ose:
                raise general_error('bootstrap failed: %s in %s: %s' % \
                                        (' '.join(cmd), self.cwd, (str(ose))))
            except KeyboardInterrupt:
                pass
            except:
                raise
        except:
            self.result = sys.exc_info()
        self.end_time = datetime.datetime.now()

    def run(self):
        self.thread = threading.Thread(target = self.runner)
        self.thread.start()

    def is_alive(self):
        return self.thread and self.thread.is_alive()

    def reraise(self):
        if self.result is not None:
            raise self.result[0](self.result[1])

class autoreconf:

    def __init__(self, topdir, configure):
        self.topdir = topdir
        self.configure = configure
        self.cwd = os.path.dirname(self.configure)
        self.command = command(['autoreconf', '-i', '--no-recursive'], self.cwd)
        self.command.run()

    def is_alive(self):
        return self.command.is_alive()

    def post_process(self):
        if self.command is not None:
            self.command.reraise()
            if self.command.exit_code != 0:
                raise general_error('error: autoreconf: %s' % (' '.join(self.command.cmd)))
            makefile = os.path.join(self.cwd, 'Makefile.am')
            if os.path.exists(makefile):
                if _grep(makefile, 'stamp-h\.in'):
                    stamp_h = os.path.join(self.cwd, 'stamp-h.in')
                    try:
                        t = open(os.path.host(stamp_h), 'w')
                        t.write('timestamp')
                        t.close()
                    except IOError as err:
                        raise general_error('writing: %s' % (stamp_h))

def generate(topdir, jobs):
    if type(jobs) is str:
        jobs = int(jobs)
    start_time = datetime.datetime.now()
    confs = _collect(topdir, 'configure.ac')
    next = 0
    autoreconfs = []
    while next < len(confs) or len(autoreconfs) > 0:
        if next < len(confs) and len(autoreconfs) < jobs:
            print('%3d/%3d: autoreconf: %s' % \
                  (next + 1, len(confs), confs[next][len(topdir) + 1:]))
            autoreconfs += [autoreconf(topdir, confs[next])]
            next += 1
        else:
            for ac in autoreconfs:
                if not ac.is_alive():
                    ac.post_process()
                    autoreconfs.remove(ac)
                    del ac
            if len(autoreconfs) >= jobs:
                time.sleep(1)
    end_time = datetime.datetime.now()
    print('Bootstrap time: %s' % (str(end_time - start_time)))

class ampolish3:

    def __init__(self, topdir, makefile):
        self.topdir = topdir
        self.makefile = makefile
        self.preinstall = os.path.join(os.path.dirname(makefile), 'preinstall.am')
        self.command = command([os.path.join(topdir, 'ampolish3'), makefile], self.topdir)
        self.command.run()

    def is_alive(self):
        return self.command.is_alive()

    def post_process(self):
        if self.command is not None:
            if self.command.exit_code != 0:
                raise general_error('error: ampolish3: %s' % (' '.join(self.command.cmd)))
            try:
                p = open(self.preinstall, 'w')
                for l in self.command.output:
                    p.write(l)
                p.close()
            except IOError as err:
                raise general_error('writing: %s' % (self.preinstall))

def preinstall(topdir, jobs):
    if type(jobs) is str:
        jobs = int(jobs)
    start_time = datetime.datetime.now()
    makes = []
    for am in _collect(topdir, 'Makefile.am'):
        if _grep(am, 'include .*/preinstall\.am'):
            makes += [am]
    next = 0
    ampolish3s = []
    while next < len(makes) or len(ampolish3s) > 0:
        if next < len(makes) and len(ampolish3s) < jobs:
            print('%3d/%3d: ampolish3: %s' % \
                  (next + 1, len(makes), makes[next][len(topdir) + 1:]))
            ampolish3s += [ampolish3(topdir, makes[next])]
            next += 1
        else:
            for ap in ampolish3s:
                if not ap.is_alive():
                    ap.post_process()
                    ampolish3s.remove(ap)
                    del ap
            if len(ampolish3s) >= jobs:
                time.sleep(1)
    end_time = datetime.datetime.now()
    print('Preinstall time: %s' % (str(end_time - start_time)))

def run(args):
    try:
        #
        # On Windows MSYS2 prepends a path to itself to the environment
        # path. This means the RTEMS specific automake is not found and which
        # breaks the bootstrap. We need to remove the prepended path. Also
        # remove any ACLOCAL paths from the environment.
        #
        if os.name == 'nt':
            cspath = os.environ['PATH'].split(os.pathsep)
            if 'msys' in cspath[0] and cspath[0].endswith('bin'):
                os.environ['PATH'] = os.pathsep.join(cspath[1:])
            if 'ACLOCAL_PATH' in os.environ:
                #
                # The clear fails on a current MSYS2 python (Feb 2016). Delete
                # the entry if the clear fails.
                #
                try:
                    os.environ['ACLOCAL_PATH'].clear()
                except:
                    del os.environ['ACLOCAL_PATH']

        argsp = argparse.ArgumentParser(prog = 'rtems-bootstrap',
                                        description = "Bootstrap in parallel")
        argsp.add_argument('-j', '--jobs',
                           help = 'number of jobs to run (default: %(default)s).',
                           type = int, default = multiprocessing.cpu_count())
        argsp.add_argument('-r', '--rtems',
                           type = str, default = os.getcwd(),
                           help = 'path to the rtems kernel source (default: %(default)s).')
        argsp.add_argument('-p', '--preinstall',
                           type = bool, default = False,
                           help = 'Preinstall AM generation (default: no).')
        argopts = argsp.parse_args(args[1:])

        print('RTEMS Bootstrap, %s' % (version))

        if not os.path.exists(argopts.rtems):
            raise general_error('path does not exist: %s' % (argopts.rtems))
        if not os.path.isdir(argopts.rtems):
            raise general_error('path not a directory: %s' % (argopts.rtems))

        if argopts.preinstall:
            preinstall(argopts.rtems, argopts.jobs)
        else:
            generate(argopts.rtems, argopts.jobs)
    except general as gerr:
        print(gerr)
        print('Bootstrap FAILED', file = sys.stderr)
        sys.exit(1)
    except KeyboardInterrupt:
        log.notice('abort: user terminated')
        sys.exit(1)
    sys.exit(0)

if __name__ == "__main__":
    run(sys.argv)


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