#!/bin/bash
#
# Copyright (c) 2015 Jiri Svoboda
# All rights reserved.
#
# 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.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
#
# Get build configration information
# HelenOS Cross Compiler Wrapper (XCW)
# Facilitate cross-compiling external software to HelenOS
#

SRC_ROOT="$(dirname "$0")/../../.."
MAKEFILE_COMMON="$SRC_ROOT"/Makefile.common
MAKEFILE_CONFIG="$SRC_ROOT"/Makefile.config

# Extract simple 'name = value' variable definition from Makefile
function extract_field
{
	field_name="$1"
	file_name="$2"

	sed -n "s/^$field_name = \\(.*\\)$/\\1/p" "$file_name"
}

case ".$1" in
(.--cc) extract_field "CC" "$MAKEFILE_COMMON";;
(.--ld) extract_field "LD" "$MAKEFILE_COMMON";;
(.--uarch) extract_field "UARCH" "$MAKEFILE_CONFIG";;
(.--endian)
	UARCH=`extract_field "UARCH" "$MAKEFILE_CONFIG"`
	ENDIAN=`extract_field "ENDIANESS" "$SRC_ROOT/uspace/lib/c/arch/$UARCH/Makefile.common"`
	echo "__${ENDIAN}__"
	;;
(*)
	echo "Unknown option $1" >&2
	echo "Usage: helenos-pkg-config {--cc|--ld|--uarch|--endian}" >&2
	exit 1;;
esac