1 files changed, 93 insertions, 0 deletions
diff --git a/ac-wrapper.sh b/ac-wrapper.sh
new file mode 100755
index 0000000..1f1810d
--- /dev/null
+++ b/ac-wrapper.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-devel/autoconf-wrapper/files/ac-wrapper-1.sh,v 1.1 2004/11/14 03:40:51 vapier Exp $
+
+# Based on the ac-wrapper.pl script provided by MandrakeSoft
+# Rewritten in bash by Gregorio Guidi
+#
+# Executes the correct autoconf version.
+#
+# - defaults to latest version (2.5x)
+# - runs autoconf 2.13 only if:
+#   - envvar WANT_AUTOCONF is set to `2.1'
+#     -or-
+#   - `configure' is already present and was generated by autoconf 2.13
+
+if [ "${0##*/}" = "ac-wrapper.sh" ] ; then
+	echo "Don't call this script directly" >&2
+	exit 1
+fi
+
+if [ "${WANT_AUTOCONF}" = "2.1" -a "${0##*/}" = "autom4te" ] ; then
+	echo "ac-wrapper: Autoconf 2.13 doesn't contain autom4te." >&2
+	echo "            Either unset WANT_AUTOCONF or don't execute anything" >&2
+	echo "            that would use autom4te." >&2
+	exit 1
+fi
+
+binary_new="${0}-2.59"
+binary_old="${0}-2.13"
+binary="${binary_new}"
+
+#
+# autodetect routine
+#
+if [ -f "configure.ac" -o -f "configure.in" ] ; then
+	if [ "${WANT_AUTOCONF}" != "2.5" ] ; then 
+		if [ "${WANT_AUTOCONF}" = "2.1" ] ; then
+			if [ ! -f "configure.ac" ] ; then
+				binary="${binary_old}"
+			else
+				echo "ac-wrapper: Since configure.ac is present, aclocal always use" >&2
+				echo "            autoconf 2.59, which conflicts with your choice and" >&2
+				echo "            causes error. You have two options:" >&2
+				echo "            1. Try execute command again after removing configure.ac" >&2
+				echo "            2. Don't set WANT_AUTOCONF" >&2
+				exit 1
+			fi
+		else
+			if [ -r "configure" ] ; then
+				confversion=$(awk \
+					'{
+					if (match($0,
+					          "^# Generated (by (GNU )?Autoconf|automatically using autoconf version) ([0-9].[0-9])",
+					          res))
+						{ print res[3]; exit }
+					}' configure)
+			fi
+
+			if [ "${confversion}" = "2.1" -a ! -f "configure.ac" ] ; then
+				binary="${binary_old}"
+			fi
+		fi
+	fi
+fi
+
+if [ "${WANT_ACWRAPPER_DEBUG}" ] ; then
+	if [ -n "${WANT_AUTOCONF}" ] ; then
+		echo "ac-wrapper: DEBUG: WANT_AUTOCONF is set to ${WANT_AUTOCONF}" >&2
+	fi
+	echo "ac-wrapper: DEBUG: will execute <$binary>" >&2
+fi
+
+#
+# for further consistency
+#
+if [ "$binary" = "$binary_new" ] ; then
+	export WANT_AUTOCONF="2.5"
+elif [ "$binary" = "$binary_old" ] ; then
+	export WANT_AUTOCONF="2.1"
+fi
+
+if [ ! -x "$binary" ] ; then
+	# this shouldn't happen
+	echo "ac-wrapper: $binary is missing or not executable." >&2
+	echo "            Please try emerging the correct version of autoconf." >&2
+	exit 1
+fi
+
+exec "$binary" "$@"
+
+echo "ac-wrapper: was unable to exec $binary !?" >&2
+exit 1