#! /bin/sh
# Copyright (C) 2011 Free Software Foundation, Inc.
#
# This program 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 2, or (at your option)
# any later version.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

# The stub rules emitted to work around the "deleted header problem"
# for `.m4' files shouldn't prevent "make" from diagnosing a missing
# required `.m4' file from a distribution tarball.
# See discussion about automake bug#9768.
# See also sister test `dist-missing-m4.test'.

. ./defs || Exit 1

set -e

cat >> configure.in <<'END'
m4_include([foobar.m4])
m4_include([zardoz.m4])
AC_OUTPUT
END

: > foobar.m4
: > zardoz.m4

: > Makefile.am

$ACLOCAL
$AUTOCONF
$AUTOMAKE

./configure

# A faulty distribution tarball, with a required `.m4' file missing.
# Building from it should fail, both for in-tree and VPATH builds.
ocwd=`pwd` || fatal_ "cannot get current working directory"
for vpath in false :; do
  $MAKE distdir
  test -f $distdir/zardoz.m4 # Sanity check.
  rm -f $distdir/zardoz.m4
  if $vpath; then
    # We can't just build in a subdirectory of $distdir, otherwise
    # we'll hit automake bug#10111.
    mkdir vpath-distcheck
    cd vpath-distcheck
    ../$distdir/configure
  else
    cd $distdir
    ./configure
  fi
  $MAKE >output 2>&1 && { cat output; Exit 1; }
  cat output
  # This error will come from automake, not make, so we can be stricter
  # in our grepping of it.
  grep 'zardoz\.m4.*does not exist' output
  grep 'foobar\.m4' output && Exit 1 # No spurious error, please.
  cd "$ocwd" || fatal_ "cannot chdir back to top-level test directory"
done

: