#! /bin/sh
# Copyright (C) 2004, 2006  Free Software Foundation, Inc.
#
# This file is part of GNU Automake.
#
# GNU Automake is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Automake is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Automake; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

# Verify that intermediate files are only built from Yacc and Lex
# sources in maintainer mode.
# From Derek R. Price.

required=gcc
. ./defs || exit 1

set -e

cat >> configure.in << 'END'
AM_MAINTAINER_MODE
AC_PROG_CC
AM_PROG_LEX
AC_PROG_YACC
AC_OUTPUT
END

cat > Makefile.am <<'END'
YACC = false
LEX = false
bin_PROGRAMS = zardoz
zardoz_SOURCES = zardoz.y joe.l
LDADD = @LEXLIB@
END

# The point of this test is that it is not dependant on a working lex or yacc.
cat > joe.c <<EOF
int joe (int arg)
{
    return arg * 2;
}
EOF
cat > zardoz.c <<EOF
int joe (int arg);
int main (int argc, char **argv)
{
    exit (joe (argc));
}
EOF

# Ensure a later timestamp for our Lex & Yacc sources.
$sleep
: > joe.l
: > zardoz.y

$ACLOCAL
$AUTOCONF
$AUTOMAKE -a

./configure
$MAKE

echo 'echo "$@" >y.tab.c' > myyacc.sh
echo 'echo "$@" >lex.yy.c' > mylex.sh

# make maintainer-clean; ./configure; make should always work,
# per GNU Standard.
$MAKE maintainer-clean
./configure
YACC="$SHELL `pwd`/myyacc.sh" LEX="$SHELL `pwd`/mylex.sh" \
   LEX_OUTPUT_ROOT='lex.yy' $MAKE -e zardoz.c joe.c
grep zardoz.y zardoz.c
grep joe.l joe.c