autogen.sh

#!/bin/bash

# flag that indicates whether or not version checks will be bypassed
# default: disabled
force=0

# MINIMUM version requirements
# gnu m4
m4_min_version_req="1.4.14"
# gnu autoconf
ac_min_version_req="2.65"
# gnu automake
am_min_version_reg="1.11.1"
# gnu libtool
lt_min_version_req="2.2.6b"

min_requirements=(  \
$m4_min_version_req \
$ac_min_version_req \
$am_min_version_reg \
$lt_min_version_req \
)

# list of tools that will be checked
tools=(m4 autoconf automake libtool)

################################################################################
# prints tool usage
# args: none
################################################################################
autogen_usage()
{
    echo "usage: autogen.sh [-h | --help] [-f | --force]"
}

################################################################################
# prints tool prerequisites and requirements
# args: none
################################################################################
echo_tool_reqs()
{
cat << EOF

autogen minimum requirements
****************************
m4: $m4_min_version_req
autoconf: $ac_min_version_req
automake: $am_min_version_reg
libtool: $lt_min_version_req

EOF
}

################################################################################
# prints tool prerequisites 
# args:
# $1: tool name
# $2: minimum tool version
################################################################################
check_tool_version()
{
    v_output=`$1 --version`
    if [[ $? != 0 ]]; then
        echo "!!! could not determine $1's version. cannot continue !!!"
        echo_tool_reqs
        exit 1
    fi
    version_str=`echo -e "$v_output" | grep -i $1`
    version_str=`echo -e "$version_str" | \
    grep -oe '[0-9]\+[.][0-9]\+[.]\?[0-9]*[A-Za-z]\?'`

    # at this point we should have a version number. something like: 1.4.16
    
    # save the newest version
    newest_v=`echo "$version_str $2" | tr ' ' '\n' | sort -nr | head -n 1`

    # does this tool meet our minimum requirements?
    if [[ $version_str != $newest_v ]]; then
        echo "$1 version requirement not met - detected $1 $version_str"
        echo_tool_reqs
        exit 1
    fi
}

while [[ $# -gt 0 ]]
do
    case "$1" in
        -h)
            autogen_usage
            exit 0;;
       --help)
            autogen_usage
            exit 0;;
       -f)
            force=1
            shift;;
       --force)
            force=1
            shift;;
       *)
            autogen_usage
            exit 1;;
    esac
    shift
done

echo "thinking ..."

if [[ $force == 1 ]]; then
    # you are on your own :-)
    echo "##############################################"
    echo "WARNING ***BYPASSING VERSION CHECKS*** WARNING"
    echo "##############################################"
else
    for i in ${!tools[*]}; do
        check_tool_version ${tools[$i]} ${min_requirements[$i]}
    done
fi

# if we are here, all is good. let the real work begin...
autoreconf --force --install -I config

exit $?

# Copyright (c) 2009-2011, Los Alamos National Security, LLC.
#                          All rights reserved.
#
# This software was produced under U.S. Government contract DE-AC52-06NA25396
# for Los Alamos National Laboratory (LANL), which is operated by Los Alamos
# National Security, LLC for the U.S. Department of Energy. The U.S. Government
# has rights to use, reproduce, and distribute this software.  NEITHER THE
# GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, LLC MAKES ANY WARRANTY, EXPRESS
# OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE.  If
# software is modified to produce derivative works, such modified software
# should be clearly marked, so as not to confuse it with the version available
# from LANL.
#
# Additionally, redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following conditions
# are met:
#
# •    Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# •   Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# •   Neither the name of Los Alamos National Security, LLC, Los Alamos
# National Laboratory, LANL, the U.S. Government, nor the names of its
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY LOS ALAMOS NATIONAL SECURITY, LLC AND
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