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#! /bin/sh

########################################################################

#

# File:   gcc_build

# Author: Mark Mitchell

# Date:   2000-07-10

#

# Adapted to Subversion by Ben Elliston , 2005-07-14.

#

# Contents:

#   Script to automatically download and build GCC.

#

# Copyright (c) 2000, 2001, 2003, 2005 Free Software Foundation.

#

# This file is part of GCC.

#

# GCC 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.

#

# GCC 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 GCC; see the file COPYING.  If not, write to

# the Free Software Foundation, 51 Franklin Street, Fifth Floor,

# Boston, MA 02110-1301, USA.

#

########################################################################

########################################################################

# Notes

########################################################################

# 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 <

gcc_build        [-c configure_options]

                 [-d destination_directory]

                 [-m make_boot_options]

                 [-o objdir]

                 [-b branch_name]

                 [-u username]

                 [-p protocol]

                 [-t tarfile]

                 [-x make_check_options]

                 [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"

}

# Checkout a fresh copy of the GCC build tree.

checkout_gcc() {

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

    test -e ${DESTINATION} && \

        error "${DESTINATION} already exists"

    # Checkout the tree

    test -n "${SVN_USERNAME}" && SVN_USERNAME="${SVN_USERNAME}@"

    SVNROOT="${SVN_PROTOCOL}://${SVN_USERNAME}${SVN_SERVER}${SVN_REPOSITORY}${SVN_BRANCH}"

    $GCC_SVN co $SVNROOT ${DESTINATION} || \

        error "Could not check out GCC"

}

# Update GCC.

update_gcc() {

    # If the destination does not already exist, complain.

    test -d ${DESTINATION} || \

        error "${DESTINATION} does not exist"

    # Enter the destination directory.

    changedir ${DESTINATION}

    # Update the tree

    ./contrib/gcc_update || \

        error "Could not update GCC"

}

# Configure for a build of GCC.

configure_gcc() {

    # Go to the source directory.

    changedir ${DESTINATION}

    # Remove the object directory.

    rm -rf ${OBJDIR}

    # Create it again.

    mkdir ${OBJDIR} || \

        error "Could not create ${OBJDIR}"

    # Enter it.

    changedir ${OBJDIR}

    # Configure the tree.

    echo "Configuring: ${DESTINATION}/configure ${CONFIGURE_OPTIONS}"

    eval ${DESTINATION}/configure ${CONFIGURE_OPTIONS} || \

        error "Could not configure the compiler"

}

# Bootstrap GCC.  Assume configuration has already occurred.

bootstrap_gcc() {

    # Go to the source directory.

    changedir ${DESTINATION}

    # Go to the object directory.

    changedir ${OBJDIR}

    # Bootstrap the compiler

    echo "Building: ${MAKE} ${MAKE_BOOTSTRAP_OPTIONS} bootstrap"

    eval ${MAKE} ${MAKE_BOOTSTRAP_OPTIONS} bootstrap || \

        error "Could not bootstrap the compiler"

}

# Test GCC.

test_gcc() {

    # Go to the source directory.

    changedir ${DESTINATION}

    # Go to the object directory.

    changedir ${OBJDIR}

    echo "Running tests...  This will take a while."

    eval \${MAKE} -k ${MAKE_CHECK_OPTIONS} check

    ${DESTINATION}/contrib/test_summary

}

# Export the GCC source tree.

export_gcc() {

    # Go to the source directory.

    changedir ${DESTINATION}

    # Go up one level.

    changedir ..

    # Build a tarball of the source directory.

    tar czf ${TARFILE} \

        --exclude=${OBJDIR} \

        --exclude=.svn \

        --exclude='.#*' \

        --exclude='*~' \

        `basename ${DESTINATION}`

}

# Install GCC.

install_gcc() {

    # Go to the source directory.

    changedir ${DESTINATION}

    # Go to the object directory.

    changedir ${OBJDIR}

    ${MAKE} install || error "Installation failed"

}

########################################################################

# Initialization

########################################################################

# SVN command

GCC_SVN=${GCC_SVN-${SVN-svn}}

# The SVN server containing the GCC repository.

SVN_SERVER="gcc.gnu.org"

# The path to the repository on that server.

SVN_REPOSITORY="/svn/gcc/"

# The branch to check out from that server.

# Defaults to trunk if no branch is defined with -b.

SVN_BRANCH=""

# The SVN protocol to use.

SVN_PROTOCOL="svn"

# The username to use when connecting to the server.

# An empty string means anonymous.

SVN_USERNAME=""

# The directory where the checked out GCC will be placed.

DESTINATION="${HOME}/dev/gcc"

# The relative path from the top of the source tree to the

# object directory.

OBJDIR="objdir"

# The file where the tarred up sources will be placed.

TARFILE="${HOME}/dev/gcc.tgz"

# Options to pass to configure.

CONFIGURE_OPTIONS=

# The `make' program.

MAKE=${MAKE:-make}

# Options to pass to "make bootstrap".

MAKE_BOOTSTRAP_OPTIONS=

# Options to pass to "make check".

MAKE_CHECK_OPTIONS=

# Modes of operation

BOOTSTRAP=0

CHECKOUT=0

CONFIGURE=0

EXPORT=0

INSTALL=0

TEST=0

UPDATE=0

########################################################################

# Main Program

########################################################################

# Issue usage if no parameters are given.

test $# -eq 0 && usage

# Parse the options.

while getopts "c:d:m:o:p:t:b:u:x:" ARG; do

    case $ARG in

    c)    CONFIGURE_OPTIONS="${OPTARG}";;

    d)    DESTINATION="${OPTARG}";;

    m)    MAKE_BOOTSTRAP_OPTIONS="${OPTARG}";;

    o)    OBJDIR="${OPTARG}";;

    p)    SVN_PROTOCOL="${OPTARG}";;

    t)    TARFILE="${OPTARG}";;

    x)    MAKE_CHECK_OPTIONS="${OPTARG}";;

    b)    SVN_BRANCH="${OPTARG}";;

    u)    SVN_USERNAME="${OPTARG}";;

    \?)   usage;;

    esac

done

shift `expr ${OPTIND} - 1`

# Handle the major modes.

while [ $# -ne 0 ]; do

    case $1 in

    bootstrap) BOOTSTRAP=1;;

    build)    CONFIGURE=1; BOOTSTRAP=1;;

    checkout) CHECKOUT=1;;

    configure) CONFIGURE=1;;

    export)   EXPORT=1;;

    install)  INSTALL=1;;

    test)     TEST=1;;

    update)   UPDATE=1;;

    *)        usage;;

    esac

    shift

done

# Check the arguments for sanity.

if [ ${CHECKOUT} -ne 0 ] && [ ${UPDATE} -ne 0 ]; then

    error "Cannot checkout and update simultaneously"

fi

if [ ${CHECKOUT} -eq 0 ] && test -n "${SVN_BRANCH}"; then

    error "Branch argument only makes sense when doing a checkout"

fi

# Validate the branch name.

if test -n "${SVN_BRANCH}"; then

    SVN_BRANCH="branches/${SVN_BRANCH}";

else

    SVN_BRANCH="trunk";

fi

# Checkout the tree.

if [ ${CHECKOUT} -ne 0 ]; then

    checkout_gcc

elif [ ${UPDATE} -ne 0 ]; then

    update_gcc

fi

# Configure to build the tree.

if [ ${CONFIGURE} -ne 0 ]; then

    configure_gcc

fi

# Bootstrap the compiler.

if [ ${BOOTSTRAP} -ne 0 ]; then

    bootstrap_gcc

fi

# Test the compiler

if [ ${TEST} -ne 0 ]; then

    test_gcc

fi

# Install the compiler.

if [ ${INSTALL} -ne 0 ]; then

    install_gcc

fi

# Export the sources

if [ ${EXPORT} -ne 0 ]; then

    export_gcc

fi