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#!/usr/bin/env bash
# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-devel/automake-wrapper/files/am-wrapper-4.sh,v 1.2 2010/02/24 08:08:28 mduft Exp $
# Based on the am-wrapper.pl script provided by MandrakeSoft
# Rewritten in bash by Gregorio Guidi
#
# Executes the correct automake version.
#
# - defaults to newest version available (hopefully automake-1.10)
# - runs automake-1.9 if:
# - envvar WANT_AUTOMAKE is set to `1.9'
# -or-
# - `Makefile.in' was generated by automake-1.9
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.9
# - runs automake-1.8 if:
# - envvar WANT_AUTOMAKE is set to `1.8'
# -or-
# - `Makefile.in' was generated by automake-1.8
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.8
# - runs automake-1.7 if:
# - envvar WANT_AUTOMAKE is set to `1.7'
# -or-
# - `Makefile.in' was generated by automake-1.7
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.7
# - runs automake-1.6 if:
# - envvar WANT_AUTOMAKE is set to `1.6'
# -or-
# - `Makefile.in'
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.6
# - runs automake-1.5 if:
# - envvar WANT_AUTOMAKE is set to `1.5'
# -or-
# - `Makefile.in' was generated by automake-1.5
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.5
# - runs automake-1.4 if:
# - envvar WANT_AUTOMAKE is set to `1.4'
# -or-
# - `Makefile.in' was generated by automake-1.4
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.4
if [ "${0##*/}" = "am-wrapper.sh" ] ; then
echo "Don't call this script directly." >&2
exit 1
fi
vers="1.11 1.10 1.9 1.8 1.7 1.6 1.5 1.4"
#
# Export the proper variable/versions and try to locate a usuable
# default (newer versions are preferred)
#
binary=""
for v in ${vers} ; do
eval binary_${v/./_}="${0}-${v}"
if [ -z "${binary}" ] && [ -x "${0}-${v}" ] ; then
binary="${0}-${v}"
fi
done
if [ -z "${binary}" ] ; then
echo "am-wrapper: Unable to locate any usuable version of automake." >&2
echo " I tried these versions: ${vers}" >&2
echo " With a base name of '${0}'." >&2
exit 1
fi
#
# Check the WANT_AUTOMAKE setting. We accept a whitespace delimited
# list of automake versions.
#
if [ -n "${WANT_AUTOMAKE}" ] ; then
for v in ${vers} x ; do
if [ "${v}" = "x" ] ; then
echo "am-wrapper: warning: invalid WANT_AUTOMAKE '${WANT_AUTOMAKE}'; ignoring." >&2
unset WANT_AUTOMAKE
break
fi
for wx in ${WANT_AUTOMAKE} ; do
if [ "${wx}" = "${v}" ] ; then
binary="binary_${v/./_}"
binary="${!binary}"
v="x"
fi
done
[ "${v}" = "x" ] && break
done
fi
#
# autodetect helpers
#
do_awk() {
local file=$1 ; shift
local arg=$1 ; shift
echo $(gawk "{ if (match(\$0, \"$*\", res)) { print res[${arg}]; exit } }" ${file})
}
#
# autodetect routine
#
if [ -z "${WANT_AUTOMAKE}" ] ; then
if [ -r "Makefile.in" ] ; then
confversion_mf=$(do_awk Makefile.in 2 "^# Makefile.in generated (automatically )?by automake ([0-9].[0-9]+)")
fi
if [ -r "aclocal.m4" ] ; then
confversion_ac=$(do_awk aclocal.m4 1 'generated automatically by aclocal ([0-9].[0-9]+)')
confversion_am=$(do_awk aclocal.m4 1 '[[:space:]]*\\[?AM_AUTOMAKE_VERSION\\(\\[?([0-9].[0-9]+)[^)]*\\]?\\)')
fi
for v in ${vers} ; do
if [ "${confversion_mf}" = "${v}" ] \
|| [ "${confversion_ac}" = "${v}" ] \
|| [ "${confversion_am}" = "${v}" ] ; then
binary="binary_${v/./_}"
binary="${!binary}"
break
fi
done
fi
if [ "${WANT_AMWRAPPER_DEBUG}" ] ; then
if [ "${WANT_AUTOMAKE}" ] ; then
echo "am-wrapper: DEBUG: WANT_AUTOMAKE is set to ${WANT_AUTOMAKE}" >&2
fi
echo "am-wrapper: DEBUG: will execute <$binary>" >&2
fi
#
# for further consistency
#
for v in ${vers} ; do
mybin="binary_${v/./_}"
if [ "${binary}" = "${!mybin}" ] ; then
export WANT_AUTOMAKE="${v}"
fi
done
#
# Now try to run the binary
#
if [ ! -x "${binary}" ] ; then
echo "am-wrapper: $binary is missing or not executable." >&2
echo " Please try emerging the correct version of automake." >&2
exit 1
fi
exec "$binary" "$@"
echo "am-wrapper: was unable to exec $binary !?" >&2
exit 1
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