#! /bin/sh
# @configure_input@
#---------------------------------------------------------------------------#
# Copyright (C) 2003, 2005, 2008, 2010 The University of Melbourne.
# This file may only be copied under the terms of the GNU General
# Public License - see the file COPYING in the Mercury distribution.
#---------------------------------------------------------------------------#
#
# IMPORTANT: the manpage is produced automatically from this help
# message, so if you change the help message, don't forget to check
# that the manpage still looks OK.
                
Help="\
Name:   mercury_config - generate new configurations for a Mercury installation
Usage:  mercury_config [<options>] [-- <configure options>]
Options:
	--rebase
		Use this option after moving a Mercury installation to
		regenerate the scripts and configuration files so that
		the Mercury installation will work from the new location.

	--output-prefix <dir>
		Generate the new copies of the Mercury scripts and
		configuration files into the given directory.
		By default mercury_config overwrites the configuration in
		the installation hierarchy containing the mercury_config
		script.

Description:
	Generates an alternative configuration for a Mercury
	installation, for example to use a different C compiler.

	The <configure options> must result in a configuration
	which is compatible with the configuration used to build
	the installed libraries, or else linking using the new
	configuration will fail.  For example, both configurations
	must agree on the use of boxed or unboxed floats.

	To use the new configuration, put \`<dir>/bin' at the
	beginning of your PATH.

Environment variables:
        MERCURY_DEFAULT_GRADE.

Configure options:
@CONFIGURE_HELP@
"
#---------------------------------------------------------------------------#

default_grade=${MERCURY_DEFAULT_GRADE-@DEFAULT_GRADE@}
libgrades="@LIBGRADES@"
input_prefix=@prefix@
output_prefix=@CONFIG_PREFIX@
exe_ext=@EXT_FOR_EXE@
unset MERCURY_STDLIB_DIR
unset MERCURY_CONFIG_DIR
recursive=no

orig_arity=$#

while : ; do
	case $1 in 
		--rebase)
			input_prefix=$(readlink -f $0)
			input_prefix=${input_prefix%/bin/mercury_config}
			output_prefix=${input_prefix}
			;;

		# This option is only for use by
		# bindist/bindist.INSTALL.in
		--input-prefix=*)
			input_prefix=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'`
			;;
		--input-prefix)
			input_prefix="$2"
			shift
			;;

		--output-prefix=*)
			output_prefix=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'`
			;;
		--output-prefix)
			output_prefix="$2"
			shift
			;;

		--recursive)
			recursive=yes
			;;

		-h|--help|"-?")
			echo "$Help"
			exit 0
			;;

		--)
			shift
			break
			;;

		*)
			break
			;;
	esac
	shift
done

input_libdir="$input_prefix/lib/mercury"
output_libdir="$output_prefix/lib/mercury"

if test "$orig_arity" -eq 0 && ! test -d "$input_prefix"
then
	echo "Input directory \`$input_prefix' not found."
	echo "Did you mean \`$0 --rebase'?"
	exit 1
fi

# mercury_config regenerates itself, so we can't just execute it in place.
case $recursive in
    no)
	if [ -d "$TMPDIR" ]; then
		:
	elif [ -d /tmp ]; then
		TMPDIR="/tmp"
	else
		TMPDIR="."
	fi
	TMPDIR=$TMPDIR/mercury_config.$$
	trap 'rm -rf $TMPDIR; exit 1' 1 2 3 13 15 
	[ -d $TMPDIR ] || mkdir -p $TMPDIR || \
		{ echo mercury_config: invalid TMPDIR: $TMPDIR; exit 1; }
	export TMPDIR

	cp $input_prefix/bin/mercury_config $TMPDIR
	case $# in
	0)
		exec $TMPDIR/mercury_config --recursive \
			--input-prefix "$input_prefix" \
			--output-prefix "$output_prefix" ;;
	*)
		exec $TMPDIR/mercury_config --recursive \
			--input-prefix "$input_prefix" \
			--output-prefix "$output_prefix" "$@" ;;
	esac
esac

cp -r $input_libdir/reconf/* $TMPDIR || exit 1
mkdir $TMPDIR/bindist || exit 1

# The configure script tries to process these files, but they won't be used.
touch $TMPDIR/scripts/Mercury.config.bootstrap.in || exit 1
touch $TMPDIR/Mmake.common.in $TMPDIR/bindist/bindist.INSTALL.in || exit 1
touch $TMPDIR/bindist/bindist.Makefile.in || exit 1
mkdir $TMPDIR/tools || exit 1
touch $TMPDIR/tools/lmc.in || exit 1
touch $TMPDIR/tools/dotime.in || exit 1
touch $TMPDIR/runtime/mercury_dotnet.cs.in || exit 1
mkdir $TMPDIR/java || exit 1
mkdir $TMPDIR/java/runtime || exit 1
touch $TMPDIR/java/runtime/Constants.java.in || exit 1
touch $TMPDIR/java/runtime/Native.java.in || exit 1
mkdir $TMPDIR/compiler || exit 1
touch $TMPDIR/compiler/COMP_FLAGS.in || exit 1
mkdir $TMPDIR/grade_lib || exit 1
touch $TMPDIR/grade_lib/GRADE_LIB_FLAGS.in || exit 1
mkdir $TMPDIR/library || exit 1
touch $TMPDIR/library/LIB_FLAGS.in || exit 1
touch $TMPDIR/library/erlang_conf.hrl.in || exit 1
mkdir $TMPDIR/mdbcomp || exit 1
touch $TMPDIR/mdbcomp/MDBCOMP_FLAGS.in || exit 1
mkdir $TMPDIR/browser || exit 1
touch $TMPDIR/browser/MDB_FLAGS.in || exit 1
mkdir $TMPDIR/slice || exit 1
touch $TMPDIR/slice/SLICE_FLAGS.in || exit 1
mkdir $TMPDIR/ssdb || exit 1
touch $TMPDIR/ssdb/SSDB_FLAGS.in || exit 1
mkdir $TMPDIR/profiler || exit 1
touch $TMPDIR/profiler/PROF_FLAGS.in || exit 1
mkdir $TMPDIR/deep_profiler || exit 1
touch $TMPDIR/deep_profiler/DEEP_FLAGS.in || exit 1
mkdir $TMPDIR/tests || exit 1
touch $TMPDIR/tests/TESTS_FLAGS.in || exit 1
touch $TMPDIR/tsets/DEFNS_FOR_TESTS.in || exit 1
mkdir $TMPDIR/mfilterjavac || exit 1
touch $TMPDIR/mfilterjavac/MFILTERJAVAC_FLAGS.in || exit 1

enable_libgrades=`echo $libgrades | sed 's/ /,/g'`

cd $TMPDIR
case $# in
	0)
		./configure @RECONFIGURE_ARGS@ \
			--with-default-grade="$default_grade" \
			--enable-libgrades="$enable_libgrades" \
			--cache-file=/dev/null \
			--prefix="$input_prefix" \
			--enable-reconfigure="$output_prefix" || exit 1
		;;
	*)
		./configure @RECONFIGURE_ARGS@ "$@" \
			--with-default-grade="$default_grade" \
			--enable-libgrades="$enable_libgrades" \
			--cache-file=/dev/null \
			--prefix="$input_prefix" \
			--enable-reconfigure="$output_prefix" || exit 1
		;;
esac

[ -d $output_libdir/conf ] || mkdir -p $output_libdir/conf || exit 1
[ -d $output_libdir/mmake ] || mkdir -p $output_libdir/mmake || exit 1
[ -d $output_libdir/mdb ] || mkdir -p $output_libdir/mdb || exit 1
[ -d $output_prefix/bin ] || mkdir -p $output_prefix/bin || exit 1

#
# Copy the new configuration into place.
#
cp runtime/mercury_conf.h $output_libdir/conf || exit 1
cp scripts/Mercury.config $output_libdir/conf || exit 1
cp scripts/Mmake.vars $output_libdir/mmake || exit 1
if [ "$input_prefix" != "$output_prefix" ]; then
	cp $input_prefix/bin/mdemangle${exe_ext} \
		$input_prefix/bin/mfiltercc${exe_ext} \
		$input_prefix/bin/mkinit${exe_ext} \
		$input_prefix/bin/info_to_mdb${exe_ext} $output_prefix/bin
	cp $input_libdir/mmake/Mmake.rules $output_libdir/mmake
fi
cd scripts
echo *
for file in *; do
	case "$file" in
		*.in|Mmake.*|Mercury.config*|*.sh-subr) ;;
		mdbrc)
			cp $file $output_libdir/mdb || exit 1
			;;
		*)
			cp $file $output_prefix/bin || exit 1
			chmod u+wx $output_prefix/bin/$file || exit 1
			;;
	esac
done
rm -rf $TMPDIR