#!/bin/sh

# Copyright (c) 2010-2011 Jean-Marc Valin
#
#  This file is extracted from RFC6716. Please see that RFC for additional
#  information.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions
#  are met:
#
#  - Redistributions of source code must retain the above copyright
#  notice, this list of conditions and the following disclaimer.
#
#  - Redistributions in binary form must reproduce the above copyright
#  notice, this list of conditions and the following disclaimer in the
#  documentation and/or other materials provided with the distribution.
#
#  - Neither the name of Internet Society, IETF or IETF Trust, nor the
#  names of specific contributors, may be used to endorse or promote
#  products derived from this software without specific prior written
#  permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
#  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
#  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


# Run this to set up the build system: configure, makefiles, etc.
# (based on the version in enlightenment's cvs)

package="opus"

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

cd "$srcdir"
DIE=0

echo "checking for autoconf... "
(autoconf --version) < /dev/null > /dev/null 2>&1 || {
        echo
        echo "You must have autoconf installed to compile $package."
        echo "Download the appropriate package for your distribution,"
        echo "or get the source tarball at ftp://ftp.gnu.org/pub/gnu/"
        DIE=1
}

VERSIONGREP="sed -e s/.*[^0-9\.]\([0-9]\.[0-9]*\).*/\1/"
VERSIONMKINT="sed -e s/[^0-9]//"

# do we need automake?
if test -r Makefile.am; then
  AM_OPTIONS=`fgrep AUTOMAKE_OPTIONS Makefile.am`
  AM_NEEDED=`echo $AM_OPTIONS | $VERSIONGREP`
  if test "$AM_NEEDED" = "$AM_OPTIONS"; then
    AM_NEEDED=""
  fi
  if test -z $AM_NEEDED; then
    echo -n "checking for automake... "
    AUTOMAKE=automake
    ACLOCAL=aclocal
    if ($AUTOMAKE --version < /dev/null > /dev/null 2>&1); then
      echo "yes"
    else
      echo "no"
      AUTOMAKE=
    fi
  else
    echo -n "checking for automake $AM_NEEDED or later... "
    for am in automake-$AM_NEEDED automake$AM_NEEDED automake; do
      ($am --version < /dev/null > /dev/null 2>&1) || continue
      ver=`$am --version < /dev/null | head -n 1 | $VERSIONGREP | $VERSIONMKINT`
      verneeded=`echo $AM_NEEDED | $VERSIONMKINT`
      if test $ver -ge $verneeded; then
        AUTOMAKE=$am
        echo $AUTOMAKE
        break
      fi
    done
    test -z $AUTOMAKE &&  echo "no"
    echo -n "checking for aclocal $AM_NEEDED or later... "
    for ac in aclocal-$AM_NEEDED aclocal$AM_NEEDED aclocal; do
      ($ac --version < /dev/null > /dev/null 2>&1) || continue
      ver=`$ac --version < /dev/null | head -n 1 | $VERSIONGREP | $VERSIONMKINT`
      verneeded=`echo $AM_NEEDED | $VERSIONMKINT`
      if test $ver -ge $verneeded; then
        ACLOCAL=$ac
        echo $ACLOCAL
        break
      fi
    done
    test -z $ACLOCAL && echo "no"
  fi
  test -z $AUTOMAKE || test -z $ACLOCAL && {
        echo
        echo "You must have automake installed to compile $package."
        echo "Download the appropriate package for your distribution,"
        echo "or get the source tarball at ftp://ftp.gnu.org/pub/gnu/"
        exit 1
  }
fi

echo -n "checking for libtool... "
for LIBTOOLIZE in libtoolize glibtoolize nope; do
  ($LIBTOOLIZE --version) < /dev/null > /dev/null 2>&1 && break
done
if test x$LIBTOOLIZE = xnope; then
  echo "nope."
  LIBTOOLIZE=libtoolize
else
  echo $LIBTOOLIZE
fi
($LIBTOOLIZE --version) < /dev/null > /dev/null 2>&1 || {
	echo
	echo "You must have libtool installed to compile $package."
	echo "Download the appropriate package for your system,"
	echo "or get the source from one of the GNU ftp sites"
	echo "listed in http://www.gnu.org/order/ftp.html"
	DIE=1
}

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

echo "Generating configuration files for $package, please wait...."

echo "  $ACLOCAL $ACLOCAL_FLAGS"
$ACLOCAL $ACLOCAL_FLAGS || exit 1
echo "  autoheader"
autoheader || exit 1
echo "  $LIBTOOLIZE --automake"
$LIBTOOLIZE --automake || exit 1
echo "  $AUTOMAKE --add-missing $AUTOMAKE_FLAGS"
$AUTOMAKE --add-missing $AUTOMAKE_FLAGS || exit 1
echo "  autoconf"
autoconf || exit 1

cd $olddir
#$srcdir/configure "$@" && echo