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#!/bin/sh
# Copyright 1999-2012 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-7.sh,v 1.1 2012/04/26 05:42:10 vapier 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-1.12)
# - runs automake-1.X (where X is a valid automake version) if:
# - envvar WANT_AUTOMAKE is set to `1.X'
# -or-
# - `Makefile.in' was generated by automake-1.X
# -or-
# - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.X
warn() { printf 'am-wrapper: %s: %b\n' "${argv0}" "$*" 1>&2; }
err() { warn "$@"; exit 1; }
unset IFS
which() {
local p
IFS=: # we don't use IFS anywhere, so don't bother saving/restoring
for p in ${PATH} ; do
p="${p}/$1"
[ -e "${p}" ] && echo "${p}" && return 0
done
unset IFS
return 1
}
#
# Sanitize argv[0] since it isn't always a full path #385201
#
argv0=${0##*/}
case ${0} in
${argv0})
# find it in PATH
if ! full_argv0=$(which "${argv0}") ; then
err "could not locate ${argv0}; file a bug"
fi
;;
*)
# re-use full/relative paths
full_argv0=$0
;;
esac
if [ "${argv0}" = "am-wrapper.sh" ] ; then
err "Don't call this script directly"
fi
if ! seq 0 0 2>/dev/null 1>&2 ; then #338518
seq() {
local f l i
case $# in
1) f=1 i=1 l=$1;;
2) f=$1 i=1 l=$2;;
3) f=$1 i=$2 l=$3;;
esac
while :; do
[ $l -lt $f -a $i -gt 0 ] && break
[ $f -lt $l -a $i -lt 0 ] && break
echo $f
: $(( f += i ))
done
return 0
}
fi
#
# Set up bindings between actual version and WANT_AUTOMAKE;
# Start with last known versions to speed up lookup process.
#
LAST_KNOWN_AUTOMAKE_VER="12"
vers=$(printf '1.%s ' `seq ${LAST_KNOWN_AUTOMAKE_VER} -1 4`)
find_binary() {
local v
all_vers="${all_vers} $*"
for v in "$@" ; do
if [ -x "${full_argv0}-${v}" ] ; then
binary="${full_argv0}-${v}"
return 0
fi
done
return 1
}
binary=""
all_vers=""
if ! find_binary ${vers} ; then
find_binary $(printf '1.%s ' `seq 99 -1 ${LAST_KNOWN_AUTOMAKE_VER}`)
fi
if [ -z "${binary}" ] ; then
err "Unable to locate any usuable version of automake.\n" \
"\tI tried these versions:${all_vers}\n" \
"\tWith a base name of '${full_argv0}'."
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
warn "warning: invalid WANT_AUTOMAKE '${WANT_AUTOMAKE}'; ignoring."
unset WANT_AUTOMAKE
break
fi
for wx in ${WANT_AUTOMAKE} ; do
if [ "${wx}" = "${v}" ] ; then
binary="${full_argv0}-${v}"
v="x"
fi
done
[ "${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}" = "${v}" ]
then
binary="${full_argv0}-${v}"
break
fi
done
fi
if [ -n "${WANT_AMWRAPPER_DEBUG}" ] ; then
if [ -n "${WANT_AUTOMAKE}" ] ; then
warn "DEBUG: WANT_AUTOMAKE is set to ${WANT_AUTOMAKE}"
fi
warn "DEBUG: will execute <${binary}>"
fi
#
# for further consistency
#
for v in ${vers} ; do
if [ "${binary}" = "${full_argv0}-${v}" ] ; then
export WANT_AUTOMAKE="${v}"
break
fi
done
#
# Now try to run the binary
#
if [ ! -x "${binary}" ] ; then
# this shouldn't happen
err "${binary} is missing or not executable.\n" \
"\tPlease try emerging the correct version of automake."
fi
exec "${binary}" "$@"
err "was unable to exec ${binary} !?"
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