bootstrap

#!/usr/bin/env bash
# -*- mode: sh; -*

function _bump {
    version=$(mktemp)

    # if it's M.m.r or M.rr
    
    eval $(echo perl -ne "'chomp; \$p=$1; \$r=\$_;  @v=split /\./, $r; if ( @v == 3) { \$v[2]=0 if \$p == 1; \$v[1] = \$v[2] = 0 unless \$p; \$v[\$p]++; print join(\".\", @v);}else{printf q{%5.2f}, \$r+.01;}'" VERSION) > $version
    
    test -e "$version" && mv $version VERSION
    echo -n "rebuilding for VERSION: $(cat VERSION)..."
    
    if test -x bootstrap; then
        if ./bootstrap && ./configure; then
            make clean
            make
        fi
    fi
}

function bump {
    [ "$1" = "major" ] && _bump 0 && exit;
    [ "$1" = "minor" ] && _bump 1 && exit;
    [ "$1" = "release" ] && _bump 2 && exit;
}

function bump_major {
    bump 0
}

function bump_minor {
    bump 1
}

function bump_release {
    bump 2
}


# Usage:
#   bootstrap [ AUTORECONF_ARG ... ]
#
# Example 1:
#   $ ./bootstrap
#
# Example 2:
#   $ ./bootstrap --verbose
#
# Example 3:
#   $ ./bootstrap --debug

declare -r PROG='bootstrap'
if [ "$1" = "bump" ]; then
    bump $2
    exit
fi

_run_on_dir=$( cd "$(dirname "$0")" ; pwd -P )

if test $? -ne 0; then
    printf "${PROG} (ERROR): was unable to determine realpath of prog \"%s\"\n" \
      "$0" 1>&2
    exit 1
fi

# sanity check that our configure.ac file exists
_configure_ac="${_run_on_dir}/configure.ac"
test -f "${_configure_ac}" || {
    printf "${PROG} (ERROR): file does not exist: \"%s\"\n" "${_configure_ac}" 1>&2
    exit 1
}

# sanity check that our include dir exists
_include_dir="${_run_on_dir}/autotools"
test -d "${_include_dir}" || {
    printf "${PROG} (ERROR): m4 macro include directory does not exist: \"%s\"\n" \
      "${_include_dir}" 1>&2
    exit 1
}

test -n "$DEBUG" && set -x

# From autoreconf(1):
#   "The environment  variables  AUTOCONF,  AUTOHEADER,  AUTOMAKE,  ACLOCAL,
#    AUTOPOINT, LIBTOOLIZE are honored."
#

# We use these to allow us to easily use the correct versions of the GNU
# autotools. Note: On some systems, the tools are /only/ installed with their
# version number suffixes, so the default names, such as 'aclocal' won't work.
AM_VERSION=$(automake --version | grep "^automake" | awk '{print $4}' | sed 's/^\([0-9]\+\.[0-9]\+\)\.[0-9]\+$/\1/;')

if test "$(which aclocal)"; then
    export ACLOCAL="aclocal"
elif test "$(which aclocal-$AM_VERSION)"; then
    export ACLOCAL="aclocal-$AM_VERSION"
else
    echo "no aclocal found"
    exit 1
fi

if test "$(which automake)"; then
    export AUTOMAKE="automake"
elif test "$(which automake-$AM_VERSION)"; then
    export AUTOMAKE="automake-$AM_VERSION"
else
    echo "no automake found"
fi

# use the VERSION file in the project to set the PACKAGE_VERSION
#if test -z "$VERSION"; then
#    test -e VERSION && VERSION=$(cat VERSION)
#fi

# --force: consider all files obsolete (ignores timestamps)
# --warnings=all
VERSION="$VERSION" autoreconf \
    "--include=${_include_dir}" \
    "$@" \
    --force \
    -i \
    "${_configure_ac}"