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160 lines
4.0 KiB
160 lines
4.0 KiB
#!/bin/sh
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# Copyright 1999-2010 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-8.sh,v 1.2 2010/03/07 15:01:09 vapier 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 newest version available (hopefully autoconf-2.60)
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# - runs autoconf 2.13 if:
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# - envvar WANT_AUTOCONF is set to `2.1'
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# -or-
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# - `ac{local,include}.m4' or `configure.{in,ac}' have AC_PREREQ(2.1) (not higher)
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# -or-
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# - `configure' is already present and was generated by autoconf 2.13
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warn() { printf "ac-wrapper: $*\n" 1>&2; }
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err() { warn "$@"; exit 1; }
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if [ "${0##*/}" = "ac-wrapper.sh" ] ; then
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err "Don't call this script directly"
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fi
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if [ "${WANT_AUTOCONF}" = "2.1" ] && [ "${0##*/}" = "autom4te" ] ; then
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err "Autoconf 2.13 doesn't contain autom4te.\n" \
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" Either unset WANT_AUTOCONF or don't execute anything\n" \
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" that would use autom4te."
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fi
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#
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# Set up bindings between actual version and WANT_AUTOCONF
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#
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vers="2.65:2.5 2.64:2.5 2.63:2.5 2.62:2.5 2.61:2.5 2.60:2.5 2.59:2.5 2.13:2.1"
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binary=""
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for v in ${vers} ; do
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auto_ver=${v%:*}
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if [ -z "${binary}" ] && [ -x "${0}-${auto_ver}" ] ; then
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binary="${0}-${auto_ver}"
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fi
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done
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if [ -z "${binary}" ] ; then
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err "Unable to locate any usuable version of autoconf.\n" \
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"\tI tried these versions: ${vers}\n" \
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"\tWith a base name of '${0}'."
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fi
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#
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# Check the WANT_AUTOCONF setting. We accept a whitespace delimited
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# list of autoconf versions.
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#
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if [ -n "${WANT_AUTOCONF}" ] ; then
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for v in ${vers} x ; do
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if [ "${v}" = "x" ] ; then
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warn "warning: invalid WANT_AUTOCONF '${WANT_AUTOCONF}'; ignoring."
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unset WANT_AUTOCONF
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break
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fi
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auto_ver=${v%:*}
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want_ver=${v#*:}
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for wx in ${WANT_AUTOCONF} ; do
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if [ "${wx}" = "${want_ver}" ] && [ -x "${0}-${auto_ver}" ] ; then
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binary="${0}-${auto_ver}"
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v="x"
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fi
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done
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[ "${v}" = "x" ] && break
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done
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fi
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#
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# autodetect helpers
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#
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acprereq_version() {
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gawk \
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'($0 !~ /^[[:space:]]*(#|dnl)/) {
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if (match($0, "AC_PREREQ\\(\\[?([0-9]\\.[0-9])", res))
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VERSIONS[COUNT++] = res[1]
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}
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END {
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asort(VERSIONS)
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print VERSIONS[COUNT]
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}' "$@"
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}
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generated_version() {
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gawk \
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'{
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if (match($0,
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"^# Generated (by (GNU )?Autoconf|automatically using autoconf version) ([0-9].[0-9])",
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res)) {
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print res[3]
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exit
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}
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}' "$@"
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}
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#
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# autodetect routine
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#
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if [ "${WANT_AUTOCONF}" = "2.1" ] && [ -f "configure.ac" ] ; then
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err "Since configure.ac is present, aclocal always use\n" \
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"\tautoconf 2.59+, which conflicts with your choice and\n" \
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"\tcauses error. You have two options:\n" \
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"\t1. Try execute command again after removing configure.ac\n" \
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"\t2. Don't set WANT_AUTOCONF"
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fi
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if [ "${WANT_AUTOCONF}" != "2.5" ] && [ -n "${WANT_AUTOMAKE}" ] ; then
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# Automake-1.7 and better require autoconf-2.5x so if WANT_AUTOMAKE
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# is set to an older version, let's do some sanity checks.
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case "${WANT_AUTOMAKE}" in
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1.[456])
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acfiles=$(ls ac{local,include}.m4 configure.{in,ac} 2>/dev/null)
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[ -n "${acfiles}" ] && confversion=$(acprereq_version ${acfiles})
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[ -z "${confversion}" ] && [ -r "configure" ] \
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&& confversion=$(generated_version configure)
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if [ "${confversion}" = "2.1" ] && [ ! -f "configure.ac" ] ; then
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binary="${0}-2.13"
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fi
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esac
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fi
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if [ -n "${WANT_ACWRAPPER_DEBUG}" ] ; then
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if [ -n "${WANT_AUTOCONF}" ] ; then
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warn "DEBUG: WANT_AUTOCONF is set to ${WANT_AUTOCONF}"
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fi
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warn "DEBUG: will execute <${binary}>"
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fi
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#
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# for further consistency
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#
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for v in ${vers} ; do
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auto_ver=${v%:*}
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want_ver=${v#*:}
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if [ "${binary}" = "${0}-${auto_ver}" ] ; then
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export WANT_AUTOCONF="${want_ver}"
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fi
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done
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#
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# Now try to run the binary
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#
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if [ ! -x "${binary}" ] ; then
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# this shouldn't happen
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err "${binary} is missing or not executable.\n" \
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"\tPlease try emerging the correct version of autoconf."
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fi
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exec "${binary}" "$@"
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err "was unable to exec ${binary} !?"
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