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- #! /usr/bin/env bash
- # Licensed 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.
- # 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 rcS "$@"
- # 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")
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