Index: tools/xcw/bin/helenos-bld-config
===================================================================
--- tools/xcw/bin/helenos-bld-config	(revision d548fc0e28b66bd85d62aea9c93bea619d7f4520)
+++ tools/xcw/bin/helenos-bld-config	(revision d548fc0e28b66bd85d62aea9c93bea619d7f4520)
@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# Copyright (c) 2019 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
+#
+
+XCW="$(dirname "$0")"
+BUILD_ROOT="$(dirname "$(dirname "$(dirname "$XCW")")")"
+if [ -z "$EXPORT_DIR" ]; then
+	EXPORT_DIR="$BUILD_ROOT/export"
+fi
+
+HELENOS_EXPORT_ROOT="$EXPORT_DIR"
+
+source "${EXPORT_DIR}/config.sh"
+
+case ".$1" in
+*.--install-dir) echo "$HELENOS_OVERLAY_PATH";;
+(*)
+	echo "Unknown option $1" >&2
+	echo "Usage: helenos-bld-config <option>" >&2
+	echo "        --install-dir Print directory where files should be installed" >&2
+	exit 1;;
+esac