45 lines
1.6 KiB
Bash
45 lines
1.6 KiB
Bash
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#! /usr/bin/env bash
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This is an "ar rcs" equivalent without "no symbols" warnings.
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# Background:
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#
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# NuttX assumes that it's ok to create
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#
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# - An object without any symbols ("has no symbols")
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# - A library without any symbols ("the table of contents is empty")
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#
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# While macOS's ranlib/libtool can handle those cases,
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# it produces warnings cited in the parentheses.
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# NuttX developers are not happy with those warnings.
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# NuttX developers are not happy with providing per-library dummy
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# objects either.
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#
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# The "has no symbols" warning can be supressed with
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# the -no_warning_for_no_symbols option if you are using
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# a recent enough version of ranlib/libtool.
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# (Unfortunately, ar doesn't have a way to pass the option to ranlib.)
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# However, there seems to be no way to suppress the
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# "the table of contents is empty" warning. (thus the grep below)
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#
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# Reference:
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#
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# https://opensource.apple.com/source/cctools/cctools-949.0.1/misc/
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set -e
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ar rcS "$@"
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# Note: the following line is using bash process substitution
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ranlib -no_warning_for_no_symbols "$1" 2> >(grep -F -v "the table of contents is empty")
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