#!/bin/sh

VERSION=$(cat .version)

DATE=$(date +%Y%m%d)

PREFIX_DEFAULT=/usr/local

BINDIR_set=

LIBDIR_set=

DOCDIR_set=

MANDIR_set=

LOCAL_set=

get_optval(){

    local ret

    case "$1" in

        --*=?*)

            echo "${1}" |cut -d '=' -f 2-

            ret=0

            ;;

        *)

            echo "${2}"

            ret=1

            ;;

    esac

    return ${ret}

}

set_prefix() {

    PREFIX=$(get_optval "$1" "$2")

    return $?

}

set_bindir() {

    BINDIR_set=1

    BINDIR=$(get_optval "$1" "$2")

    return $?

}

set_libdir() {

    LIBDIR_set=1

    LIBDIR=$(get_optval "$1" "$2")

    return $?

}

set_docdir() {

    DOCDIR_set=1

    DOCDIR=$(get_optval "$1" "$2")

    return $?

}

set_mandir() {

    MANDIR_set=1

    MANDIR=$(get_optval "$1" "$2")

    return $?

}

do_help() {

    cat <<__EOF__

\`configure' configures crosstool-NG ${VERSION} to adapt to many kind of systems.

USAGE: ./configure [OPTION]...

Defaults for the options are specified in brackets.

Configuration:

  -h, --help              display this help and exit                                                                                                                  

  --prefix=PREFIX         install files in PREFIX [${PREFIX_DEFAULT}]

  --local                 don't install, and use current directory

By default, \`make install' will install all the files in

\`${PREFIX_DEFAULT}/bin', \`${PREFIX_DEFAULT}/lib' etc.  You can specify

an installation prefix other than \`${PREFIX_DEFAULT}' using \`--prefix',

for instance \`--prefix=\${HOME}'.

For better control, use the options below.

Fine tuning of the installation directories:

  --bindir=DIR           user executables [PREFIX/bin]

  --libdir=DIR           object code libraries [PREFIX/lib]

  --docdir=DIR           info documentation [PREFIX/share/doc]

  --mandir=DIR           man documentation [PREFIX/share/man]

__EOF__

}

do_error() {

    echo "[ERROR] ${@}"

    exit 1

}

#---------------------------------------------------------------------

# Set user's options

while [ $# -ne 0 ]; do

    case "$1" in

        --prefix*)  set_prefix "$1" "$2" && shift || shift 2;;

        --bindir*)  set_bindir "$1" "$2" && shift || shift 2;;

        --libdir*)  set_libdir "$1" "$2" && shift || shift 2;;

        --docdir*)  set_docdir "$1" "$2" && shift || shift 2;;

        --mandir*)  set_mandir "$1" "$2" && shift || shift 2;;

        --local)    LOCAL_set=1; shift;;

        --help|-h)  do_help; exit 0;;

        *)          do_help; exit 1;;

    esac

done

[ -z "${PREFIX}" ] && set_prefix "" "${PREFIX_DEFAULT}"

if [ "${LOCAL_set}" = "1" ]; then

    set_prefix "" $(pwd)

    set_bindir "" $(pwd)

    set_libdir "" $(pwd)

    set_docdir "" $(pwd)/docs

    set_mandir "" $(pwd)/docs

fi

[ -z "${BINDIR_set}" ] && BINDIR="${PREFIX}/bin"

[ -z "${LIBDIR_set}" ] && LIBDIR="${PREFIX}/lib/ct-ng-${VERSION}"

[ -z "${DOCDIR_set}" ] && DOCDIR="${PREFIX}/share/doc/ct-ng-${VERSION}"

[ -z "${MANDIR_set}" ] && MANDIR="${PREFIX}/share/man/man1"

#---------------------------------------------------------------------

# Some sanity checks, now

# Check bash is present, and at least version 3.0

[ -x /bin/bash ] || do_error "bash 3.0 or above was not found in /bin/bash"

bash_version=$(/bin/bash --version |sed -r -e '2,$d' -e 's/.* version ([[:digit:]]+).*/\1/;')

bash_major=${bash_version%%.*}

[ ${bash_major} -ge 3 ] || do_error "bash 3.0 or above is needed (found ${bash_version})"

sed -r -e "s,@@BINDIR@@,${BINDIR},g;"   \

       -e "s,@@LIBDIR@@,${LIBDIR},g;"   \

       -e "s,@@DOCDIR@@,${DOCDIR},g;"   \

       -e "s,@@MANDIR@@,${MANDIR},g;"   \

       -e "s,@@VERSION@@,${VERSION},g;" \

       -e "s,@@DATE@@,${DATE},g;"       \

       -e "s,@@LOCAL@@,${LOCAL_set},g;" \

       Makefile.in >Makefile

cat <<__EOF__

crosstool-NG configured as follows:

  PREFIX="${PREFIX}"

  BINDIR="${BINDIR}"

  LIBDIR="${LIBDIR}"

  DOCDIR="${DOCDIR}"

  MANDIR="${MANDIR}"

__EOF__