source: trunk/src/gcc/contrib/gcc_build@ 461

#! /bin/sh

########################################################################
#
# File:   gcc_build
# Author: Mark Mitchell
# Date:   07/10/2000
#
# Contents:
#   Script to automatically download and build GCC.
#
# Copyright (c) 2000, 2001 Free Software Foundation.
#
# This file is part of GNU CC.
#
# GNU CC 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 2, or (at your option)
# any later version.
#
# GNU CC 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 GNU CC; see the file COPYING.  If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
########################################################################

########################################################################
# Notes
########################################################################

# If you are using password-based CVS, you must manually log in, and
# not log out from, the CVS server before running this script.

# You can set the following variables in the environment.  They 
# have no corresponding command-line options because they should
# only be needed infrequently:
#
#   MAKE                        The path to `make'.

########################################################################
# Functions
########################################################################

# Issue the error message given by $1 and exit with a non-zero
# exit code.

error() {
    echo "gcc_build: error: $1"
    exit 1
}

# Issue a usage message explaining how to use this script.

usage() {
cat <<EOF
gcc_build        [-c configure_options] 
                 [-d destination_directory]
                 [-m make_boot_options]
                 [-o objdir]
                 [-u username]
                 [-p protocol]
                 [-t tarfile]
                 [bootstrap]
                 [build]
                 [checkout]
                 [configure]
                 [export]
                 [install]
                 [test]
                 [update]
EOF
    exit 1
}

# Change to the directory given by $1.

changedir() {
    cd $1 || \
        error "Could not change directory to $1"
}

# Set up CVS environment variables

cvs_setup() {
    CVSROOT=":${CVS_PROTOCOL}:${CVS_USERNAME}@"
    CVSROOT="${CVSROOT}${CVS_SERVER}:${CVS_REPOSITORY}"
    export CVSROOT
}

# Checkout a fresh copy of the GCC build tree.

checkout_gcc() {
    # Tell CVS where to find everything.
    cvs_setup

    # If the destination already exists, don't risk destroying it.