#! /usr/bin/env bash
 ############################################################################
 # tools/macar-qcs.sh
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
 # ASF licenses this file to you under the Apache License, Version 2.0 (the
 # "License"); you may not use this file except in compliance with the
 # License.  You may obtain a copy of the License at
 #
 #   http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 # License for the specific language governing permissions and limitations
 # under the License.
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 ############################################################################

# This is an "ar rcs" equivalent without "no symbols" warnings.

# Background:
#
# NuttX assumes that it's ok to create
#
#  - An object without any symbols ("has no symbols")
#  - A library without any symbols ("the table of contents is empty")
#
# While macOS's ranlib/libtool can handle those cases,
# it produces warnings cited in the parentheses.
# NuttX developers are not happy with those warnings.
# NuttX developers are not happy with providing per-library dummy
# objects either.
#
# The "has no symbols" warning can be suppressed with
# the -no_warning_for_no_symbols option if you are using
# a recent enough version of ranlib/libtool.
# (Unfortunately, ar doesn't have a way to pass the option to ranlib.)
# However, there seems to be no way to suppress the
# "the table of contents is empty" warning. (thus the grep below)
#
# Reference:
#
# https://opensource.apple.com/source/cctools/cctools-949.0.1/misc/

set -e
ar qcS "$@"
# Note: the following line is using bash process substitution
ranlib -no_warning_for_no_symbols "$1" 2> >(grep -F -v "the table of contents is empty")