#!/bin/sh

#
# Helps generate autoconf/automake stuff, when code is checked out from SCM.
#
# Copyright (C) 2006-2010 - Karel Zak <kzak@redhat.com>
#

srcdir=`dirname $0`
test -z "$srcdir" && srcdir=.

THEDIR=`pwd`
cd $srcdir
DIE=0

warn_mesg ()
{
	echo
	echo "WARNING: $1"
	test -z "$2" ||
		echo "       $2"
	echo
}

error_mesg ()
{
	echo
	echo "ERROR: $1"
	test -z "$2" ||
		echo "       $2"
	echo
	DIE=1
}

# provide simple gettext backward compatibility
autopoint_fun ()
{
	# we have to deal with set -e ...
	ret="0"

	# check against this hardcoded set of alternative gettext versions
	gt_ver=`gettext --version |\
		sed -n -e 's/.* \(0\.17\|0\.18\|0\.18\.[1-2]\)$/\1/p'`

	if [ -n "$gt_ver" ]; then
		warn_mesg "warning: forcing autopoint to use old gettext $gt_ver"
		rm -f configure.ac.autogenbak
		sed -i.autogenbak configure.ac \
			-e "s/\(AM_GNU_GETTEXT_VERSION\).*/\1([$gt_ver])/"
	fi

	autopoint "$@" || ret=$?

	if [ -n "$gt_ver" ]; then
		mv configure.ac.autogenbak configure.ac
	fi

	return $ret
}

test -f sys-utils/mount.c ||
	error_mesg "You must run this script in the top-level util-linux directory."

(autopoint --version) < /dev/null > /dev/null 2>&1 ||
	error_mesg "You must have autopoint installed to generate the util-linux build system." "The autopoint command is part of the GNU gettext package."

(autoconf --version) < /dev/null > /dev/null 2>&1 ||
	error_mesg "You must have autoconf installed to generate the util-linux build system."

(autoheader --version) < /dev/null > /dev/null 2>&1 ||
	error_mesg "You must have autoheader installed to generate the util-linux build system."  "The autoheader command is part of the GNU autoconf package."

[ -x "$(command -v gettext)" -o -x "$(command -v xgettext)" ] ||
	warn_mesg "You need have [x]gettext binary installed to update po/ stuff."

if ! (bison --version) < /dev/null > /dev/null 2>&1; then
	error_mesg "You must have bison installed to build the util-linux."
else
	lexver=$(bison --version | awk '/^bison \(GNU [Bb]ison\)/ { print $4 }')
	case "$lexver" in
		[2-9].*)
			;;
		*)
			error_mesg "You must have bison version >= 2.x, but you have $lexver."
			;;
	esac
fi

LIBTOOLIZE=libtoolize
case `uname` in Darwin*) LIBTOOLIZE=glibtoolize ;; esac
if ! ($LIBTOOLIZE --version) < /dev/null > /dev/null 2>&1; then
	error_mesg "You must have libtool-2 installed to generate the util-linux build system."
else
	ltver=$($LIBTOOLIZE --version | awk '/^[g]*libtoolize/ { print $4 }')
	ltver=${ltver:-"none"}
	test ${ltver##2.} = "$ltver" &&
		error_mesg "You must have libtool version >= 2.x.x, but you have $ltver."
fi

(automake --version) < /dev/null > /dev/null 2>&1 ||
	error_mesg "You must have automake installed to generate the util-linux build system."

if test "$DIE" -eq 1; then
	exit 1
fi

echo
echo "Generating build-system with:"
echo "   autopoint:  $(autopoint --version | head -1)"
echo "   aclocal:    $(aclocal --version | head -1)"
echo "   autoconf:   $(autoconf --version | head -1)"
echo "   autoheader: $(autoheader --version | head -1)"
echo "   automake:   $(automake --version | head -1)"
echo "   libtoolize: $($LIBTOOLIZE --version | head -1)"
echo "   bison:      $(bison --version | head -1)"
echo

rm -rf autom4te.cache

set -e
po/update-potfiles
autopoint_fun --force $AP_OPTS
if ! grep -q datarootdir po/Makefile.in.in; then
	echo "INFO: autopoint does not honor dataroot variable, patching."
	sed -i -e 's/^datadir *=\(.*\)/datarootdir = @datarootdir@\
datadir = @datadir@/g' po/Makefile.in.in
fi
$LIBTOOLIZE --force $LT_OPTS

# patch libtool
if test -f tools/libtool.m4.patch; then
	if test -L m4/libtool.m4; then
		cp m4/libtool.m4 m4/libtool.m4.org
		rm m4/libtool.m4
		mv m4/libtool.m4.org m4/libtool.m4
	fi
	set +e
	patch --batch --dry -p1 < tools/libtool.m4.patch > /dev/null 2>&1
	if [ "$?" -eq 0 ]; then
		patch -p1 --batch < tools/libtool.m4.patch
	fi
	set -e
fi

aclocal -I m4 $AL_OPTS
autoconf $AC_OPTS
autoheader $AH_OPTS

automake --add-missing $AM_OPTS


cd "$THEDIR"

echo
echo "Now type '$srcdir/configure' and 'make' to compile."
echo