#! /bin/sh
# Copyright (C) 2002, 2004  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/>.

# Like the true/false example from the manual,
# with one extra indirection in the sources (PR/315), and
# use of _CPPFLAGS (PR/337).

required=gcc
. ./defs || Exit 1

set -e

cat >> configure.in << 'END'
AC_PROG_CC
AM_PROG_CC_C_O
AC_OUTPUT
END

# Using a separate variable to hold all the sources for a program is
# common when building many flavors of this program, each with
# different flags.

cat > Makefile.am << 'END'
FALSESOURCE = false.c
bin_PROGRAMS = false true
true_SOURCES = $(FALSESOURCE)
true_CPPFLAGS = -DAM_TRUE
false_SOURCES = $(FALSESOURCE)
false_CPPFLAGS = -DAM_FALSE
END

cat > false.c << 'END'
#include <stdio.h>
int
main (int argc, char *argv[])
{
#ifdef AM_TRUE
   puts ("true");
#else
   puts ("false");
#endif
   return 0;
}
END

$ACLOCAL
$AUTOCONF
$AUTOMAKE -a

./configure
$MAKE
./true | grep true
./false | grep false