#!/bin/sh

# Copyright 2005, 2006, 2007, 2008, 2009, 2010 by

# David Turner, Robert Wilhelm, and Werner Lemberg.

#

# This file is part of the FreeType project, and may only be used, modified,

# and distributed under the terms of the FreeType project license,

# LICENSE.TXT.  By continuing to use, modify, or distribute this file you

# indicate that you have read the license and understand and accept it

# fully.

run ()

{

  echo "running \`$*'"

  eval $*

  if test $? != 0 ; then

    echo "error while running \`$*'"

    exit 1

  fi

}

get_major_version ()

{

  echo $1 | sed -e 's/\([0-9][0-9]*\)\..*/\1/g'

}

get_minor_version ()

{

  echo $1 | sed -e 's/[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/g'

}

get_patch_version ()

{

  # tricky: some version numbers don't include a patch

  # separated with a point, but something like 1.4-p6

  patch=`echo $1 | sed -e 's/[0-9][0-9]*\.[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/g'`

  if test "$patch" = "$1"; then

    patch=`echo $1 | sed -e 's/[0-9][0-9]*\.[0-9][0-9]*\-p\([0-9][0-9]*\).*/\1/g'`

    # if there isn't any patch number, default to 0

    if test "$patch" = "$1"; then

      patch=0

    fi

  fi

  echo $patch

}

# $1: version to check

# $2: minimum version

compare_to_minimum_version ()

{

  MAJOR1=`get_major_version $1`

  MAJOR2=`get_major_version $2`

  if test $MAJOR1 -lt $MAJOR2; then

    echo 0

    return

  else 

    if test $MAJOR1 -gt $MAJOR2; then

      echo 1

      return

    fi

  fi

  MINOR1=`get_minor_version $1`

  MINOR2=`get_minor_version $2`

  if test $MINOR1 -lt $MINOR2; then

    echo 0

    return

  else 

    if test $MINOR1 -gt $MINOR2; then

      echo 1

      return

    fi

  fi

  PATCH1=`get_patch_version $1`

  PATCH2=`get_patch_version $2`

  if test $PATCH1 -lt $PATCH2; then

    echo 0

  else

    echo 1

  fi

}

# check the version of a given tool against a minimum version number

#

# $1: tool path

# $2: tool usual name (e.g. `aclocal')

# $3: tool variable  (e.g. `ACLOCAL')

# $4: minimum version to check against

# $5: option field index used to extract the tool version from the

#     output of --version

check_tool_version ()

{

  field=$5

  # assume the output of "[TOOL] --version" is "toolname (GNU toolname foo bar) version"

  if test "$field"x = x; then

    field=3  # default to 3 for all GNU autotools, after filtering enclosed string

  fi

  version=`$1 --version | head -1 | sed 's/([^)]*)/()/g' | cut -d ' ' -f $field`

  version_check=`compare_to_minimum_version $version $4`

  if test "$version_check"x = 0x; then

    echo "ERROR: Your version of the \`$2' tool is too old."

    echo "       Minimum version $4 is required (yours is version $version)."

    echo "       Please upgrade or use the $3 variable to point to a more recent one."

    echo ""

    exit 1

  fi

}

if test ! -f ./builds/unix/configure.raw; then

  echo "You must be in the same directory as \`autogen.sh'."

  echo "Bootstrapping doesn't work if srcdir != builddir."

  exit 1

fi

# On MacOS X, the GNU libtool is named `glibtool'.

HOSTOS=`uname`

LIBTOOLIZE=libtoolize

if test "$HOSTOS"x = Darwinx; then

  LIBTOOLIZE=glibtoolize

fi

if test "$ACLOCAL"x = x; then

  ACLOCAL=aclocal

fi

if test "$AUTOCONF"x = x; then

  AUTOCONF=autoconf

fi

check_tool_version $ACLOCAL    aclocal    ACLOCAL    1.10.1

check_tool_version $LIBTOOLIZE libtoolize LIBTOOLIZE 2.2.4

check_tool_version $AUTOCONF   autoconf   AUTOCONF   2.62

# This sets freetype_major, freetype_minor, and freetype_patch.

eval `sed -nf version.sed include/freetype/freetype.h`

# We set freetype-patch to an empty value if it is zero.

if test "$freetype_patch" = ".0"; then

  freetype_patch=

fi

cd builds/unix

echo "generating \`configure.ac'"

sed -e "s;@VERSION@;$freetype_major$freetype_minor$freetype_patch;" \

  < configure.raw > configure.ac

run aclocal -I . --force

run $LIBTOOLIZE --force --copy --install

run autoconf --force

chmod +x mkinstalldirs

chmod +x install-sh

cd ../..

chmod +x ./configure

# EOF