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#!/bin/bash
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# Copyright 1999-2005 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/sys-devel/autoconf-wrapper/files/ac-wrapper-3.sh,v 1.2 2005/06/30 12:58:52 azarah Exp $
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# Based on the ac-wrapper.pl script provided by MandrakeSoft
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# Rewritten in bash by Gregorio Guidi
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#
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# Executes the correct autoconf version.
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#
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# - defaults to latest version (2.5x)
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# - runs autoconf 2.13 only if:
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# - envvar WANT_AUTOCONF is set to `2.1'
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# -or-
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# - `configure' is already present and was generated by autoconf 2.13
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if [[ ${0##*/} == "ac-wrapper.sh" ]] ; then
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echo "Don't call this script directly" >&2
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exit 1
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fi
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if [[ ${WANT_AUTOCONF} == "2.1" && ${0##*/} == "autom4te" ]] ; then
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echo "ac-wrapper: Autoconf 2.13 doesn't contain autom4te." >&2
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echo " Either unset WANT_AUTOCONF or don't execute anything" >&2
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echo " that would use autom4te." >&2
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exit 1
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fi
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binary_new="${0}-2.59"
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binary_old="${0}-2.13"
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binary=${binary_new}
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#
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# autodetect routine
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#
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if [[ ${WANT_AUTOCONF} != "2.5" ]] ; then
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if [[ ${WANT_AUTOCONF} == "2.1" ]] ; then
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if [[ ! -f "configure.ac" ]] ; then
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binary=${binary_old}
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else
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echo "ac-wrapper: Since configure.ac is present, aclocal always use" >&2
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echo " autoconf 2.59, which conflicts with your choice and" >&2
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echo " causes error. You have two options:" >&2
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echo " 1. Try execute command again after removing configure.ac" >&2
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echo " 2. Don't set WANT_AUTOCONF" >&2
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exit 1
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fi
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else
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# Automake-1.7 and better requie autoconf-2.5x
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case "${WANT_AUTOMAKE}" in
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1.[7-9]) ;;
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*)
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acfiles=$(ls ac{local,include}.m4 configure.{in,ac} 2>/dev/null)
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if [[ -n ${acfiles} ]] ; then
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confversion=$(gawk \
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'{
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if (match($0, "AC_PREREQ\\(\\[?([0-9]\\.[0-9])", res))
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VERSIONS[COUNT++] = res[1]
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}
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END {
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asort(VERSIONS)
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print VERSIONS[COUNT]
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}' ${acfiles})
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fi
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if [[ -z ${confversion} && -r "configure" ]] ; then
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confversion=$(gawk \
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'{
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if (match($0,
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"^# Generated (by (GNU )?Autoconf|automatically using autoconf version) ([0-9].[0-9])",
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res))
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{ print res[3]; exit }
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}' configure)
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fi
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if [[ ${confversion} == "2.1" && ! -f "configure.ac" ]] ; then
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binary="${binary_old}"
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fi
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esac
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fi
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fi
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if [[ -n ${WANT_ACWRAPPER_DEBUG} ]] ; then
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if [[ -n ${WANT_AUTOCONF} ]] ; then
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echo "ac-wrapper: DEBUG: WANT_AUTOCONF is set to ${WANT_AUTOCONF}" >&2
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fi
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echo "ac-wrapper: DEBUG: will execute <${binary}>" >&2
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fi
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#
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# for further consistency
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#
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if [[ ${binary} == "${binary_new}" ]] ; then
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export WANT_AUTOCONF="2.5"
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elif [[ ${binary} == "${binary_old}" ]] ; then
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export WANT_AUTOCONF="2.1"
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fi
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if [[ ! -x ${binary} ]] ; then
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# this shouldn't happen
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echo "ac-wrapper: ${binary} is missing or not executable." >&2
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echo " Please try emerging the correct version of autoconf." >&2
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exit 1
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fi
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exec "${binary}" "$@"
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echo "ac-wrapper: was unable to exec ${binary} !?" >&2
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exit 1
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