88 lines
2 KiB
Bash
88 lines
2 KiB
Bash
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#!/bin/bash -e
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# Copyright 2019 Google Inc. All rights reserved.
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#
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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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# Script to extract and repack an archive with specified object files.
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# Inputs:
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# Environment:
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# CLANG_BIN: path to the clang bin directory
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# Arguments:
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# -i ${file}: input file
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# -o ${file}: output file
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# -d ${file}: deps file
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set -o pipefail
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OPTSTRING=d:i:o:
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usage() {
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cat <<EOF
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Usage: archive_repack.sh [options] <objects to repack>
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OPTIONS:
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-i <file>: input file
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-o <file>: output file
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-d <file>: deps file
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EOF
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exit 1
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}
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while getopts $OPTSTRING opt; do
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case "$opt" in
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d) depsfile="${OPTARG}" ;;
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i) infile="${OPTARG}" ;;
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o) outfile="${OPTARG}" ;;
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?) usage ;;
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esac
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done
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shift "$(($OPTIND -1))"
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if [ -z "${infile}" ]; then
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echo "-i argument is required"
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usage
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fi
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if [ -z "${outfile}" ]; then
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echo "-o argument is required"
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usage
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fi
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# Produce deps file
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if [ ! -z "${depsfile}" ]; then
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cat <<EOF > "${depsfile}"
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${outfile}: ${infile} ${CLANG_BIN}/llvm-ar
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EOF
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fi
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# Get absolute path for outfile and llvm-ar.
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LLVM_AR="${PWD}/${CLANG_BIN}/llvm-ar"
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if [[ "$outfile" != /* ]]; then
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outfile="${PWD}/${outfile}"
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fi
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tempdir="${outfile}.tmp"
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# Clean up any previous temporary files.
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rm -f "${outfile}"
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rm -rf "${tempdir}"
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# Do repack
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# We have to change working directory since ar only allows extracting to CWD.
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mkdir "${tempdir}"
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cp "${infile}" "${tempdir}/archive"
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cd "${tempdir}"
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"${LLVM_AR}" x "archive"
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"${LLVM_AR}" --format=gnu qc "${outfile}" "$@"
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