#! /bin/sh
# Run this to generate all the initial makefiles, etc. 
#
# Copyright (C) 2003 g10 Code GmbH
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure_ac="configure.ac"

cvtver () {
  awk 'NR==1 {split($NF,A,".");X=1000000*A[1]+1000*A[2]+A[3];print X;exit 0}'
}

check_version () {
    if [ `("$1" --version || echo "0") | cvtver` -ge "$2" ]; then
       return 0
    fi
    echo "**Error**: "\`$1\'" not installed or too old." >&2
    echo '           Version '$3' or newer is required.' >&2
    [ -n "$4" ] && echo '           Note that this is part of '\`$4\''.' >&2
    DIE="yes"
    return 1
}

# Allow to override the default tool names
AUTOCONF=${AUTOCONF_PREFIX}${AUTOCONF:-autoconf}${AUTOCONF_SUFFIX}
AUTOHEADER=${AUTOCONF_PREFIX}${AUTOHEADER:-autoheader}${AUTOCONF_SUFFIX}

AUTOMAKE=${AUTOMAKE_PREFIX}${AUTOMAKE:-automake}${AUTOMAKE_SUFFIX}
ACLOCAL=${AUTOMAKE_PREFIX}${ACLOCAL:-aclocal}${AUTOMAKE_SUFFIX}

GETTEXT=${GETTEXT_PREFIX}${GETTEXT:-gettext}${GETTEXT_SUFFIX}
MSGMERGE=${GETTEXT_PREFIX}${MSGMERGE:-msgmerge}${GETTEXT_SUFFIX}

DIE=no

# ***** W32 build script *******
# Used to cross-compile for Windows.
if test "$1" = "--build-w32"; then
    tmp=`dirname $0`
    tsdir=`cd "$tmp"; pwd`
    shift
    if [ ! -f $tsdir/scripts/config.guess ]; then
        echo "$tsdir/scripts/config.guess not found" >&2
        exit 1
    fi
    build=`$tsdir/scripts/config.guess`

    [ -z "$w32root" ] && w32root="$HOME/w32root"
    echo "Using $w32root as standard install directory" >&2
    
    # See whether we have the Debian cross compiler package or the
    # old mingw32/cpd system
    if i586-mingw32msvc-gcc --version >/dev/null 2>&1 ; then
        host=i586-mingw32msvc
        crossbindir=/usr/$host/bin
    else
       host=i386--mingw32
       if ! mingw32 --version >/dev/null; then
          echo "We need at least version 0.3 of MingW32/CPD" >&2
          exit 1
       fi
       crossbindir=`mingw32 --install-dir`/bin
       # Old autoconf version required us to setup the environment
       # with the proper tool names.
       CC=`mingw32 --get-path gcc`
       CPP=`mingw32 --get-path cpp`
       AR=`mingw32 --get-path ar`
       RANLIB=`mingw32 --get-path ranlib`
       export CC CPP AR RANLIB 
    fi
   
    if [ -f "$tsdir/config.log" ]; then
        if ! head $tsdir/config.log | grep "$host" >/dev/null; then
            echo "Pease run a 'make distclean' first" >&2
            exit 1
        fi
    fi

    ./configure --enable-maintainer-mode --prefix=${w32root}  \
             --host=i586-mingw32msvc --build=${build} \
             --with-gpg-error-prefix=${w32root} \
	     --with-ksba-prefix=${w32root} \
	     --with-libgcrypt-prefix=${w32root} \
	     --with-libassuan-prefix=${w32root} \
	     --with-zlib=${w32root} \
             --with-pth-prefix=${w32root} \
             --disable-gpg
    rc=$?
    # Ugly hack to overcome a gettext problem.  Someone should look into
    # gettext to figure out why the po directory is not ignored as it used
    # to be.
    [ $rc = 0 ] && touch $tsdir/po/all
    exit $rc
fi
# ***** end W32 build script *******




# Grep the required versions from configure.ac
autoconf_vers=`sed -n '/^AC_PREREQ(/ { 
s/^.*(\(.*\))/\1/p
q
}' ${configure_ac}`
autoconf_vers_num=`echo "$autoconf_vers" | cvtver`

automake_vers=`sed -n '/^min_automake_version=/ { 
s/^.*="\(.*\)"/\1/p
q
}' ${configure_ac}`
automake_vers_num=`echo "$automake_vers" | cvtver`

gettext_vers=`sed -n '/^AM_GNU_GETTEXT_VERSION(/ { 
s/^.*(\(.*\))/\1/p
q
}' ${configure_ac}`
gettext_vers_num=`echo "$gettext_vers" | cvtver`


if [ -z "$autoconf_vers" -o -z "$automake_vers" -o -z "$gettext_vers" ]
then
  echo "**Error**: version information not found in "\`${configure_ac}\'"." >&2
  exit 1
fi


if check_version $AUTOCONF $autoconf_vers_num $autoconf_vers ; then
    check_version $AUTOHEADER $autoconf_vers_num $autoconf_vers autoconf
fi
if check_version $AUTOMAKE $automake_vers_num $automake_vers; then
  check_version $ACLOCAL $automake_vers_num $autoconf_vers automake
fi
if check_version $GETTEXT $gettext_vers_num $gettext_vers; then
  check_version $MSGMERGE $gettext_vers_num $gettext_vers gettext
fi

if test "$DIE" = "yes"; then
    cat <<EOF

Note that you may use alternative versions of the tools by setting 
the corresponding environment variables; see README.CVS for details.
                   
EOF
    exit 1
fi


echo "Running aclocal -I m4 -I gl/m4 ${ACLOCAL_FLAGS:+$ACLOCAL_FLAGS }..."
$ACLOCAL -I m4 -I gl/m4 $ACLOCAL_FLAGS
echo "Running autoheader..."
$AUTOHEADER
echo "Running automake --gnu ..."
$AUTOMAKE --gnu;
echo "Running autoconf..."
$AUTOCONF

echo "You may now run \"./configure --enable-maintainer-mode && make\"."