c49c393f73
Previous solution by using objcopy uses a quirky behaviour of the GNU objcopy and there is no equivalent option in llvm-objcopy. Instead of removing symbols, extract and repack libgcc to only include required objects. Bug: 142585047 Test: presubmit Change-Id: I58af74c18838f797e481da38c3265f0624fddf99
87 lines
2 KiB
Bash
Executable file
87 lines
2 KiB
Bash
Executable file
#!/bin/bash -e
|
|
|
|
# Copyright 2019 Google Inc. All rights reserved.
|
|
#
|
|
# 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.
|
|
|
|
# Script to extract and repack an archive with specified object files.
|
|
# Inputs:
|
|
# Environment:
|
|
# CLANG_BIN: path to the clang bin directory
|
|
# Arguments:
|
|
# -i ${file}: input file
|
|
# -o ${file}: output file
|
|
# -d ${file}: deps file
|
|
|
|
set -o pipefail
|
|
|
|
OPTSTRING=d:i:o:
|
|
|
|
usage() {
|
|
cat <<EOF
|
|
Usage: archive_repack.sh [options] <objects to repack>
|
|
|
|
OPTIONS:
|
|
-i <file>: input file
|
|
-o <file>: output file
|
|
-d <file>: deps file
|
|
EOF
|
|
exit 1
|
|
}
|
|
|
|
while getopts $OPTSTRING opt; do
|
|
case "$opt" in
|
|
d) depsfile="${OPTARG}" ;;
|
|
i) infile="${OPTARG}" ;;
|
|
o) outfile="${OPTARG}" ;;
|
|
?) usage ;;
|
|
esac
|
|
done
|
|
shift "$(($OPTIND -1))"
|
|
|
|
if [ -z "${infile}" ]; then
|
|
echo "-i argument is required"
|
|
usage
|
|
fi
|
|
|
|
if [ -z "${outfile}" ]; then
|
|
echo "-o argument is required"
|
|
usage
|
|
fi
|
|
|
|
# Produce deps file
|
|
if [ ! -z "${depsfile}" ]; then
|
|
cat <<EOF > "${depsfile}"
|
|
${outfile}: ${infile} ${CLANG_BIN}/llvm-ar
|
|
EOF
|
|
fi
|
|
|
|
# Get absolute path for outfile and llvm-ar.
|
|
LLVM_AR="${PWD}/${CLANG_BIN}/llvm-ar"
|
|
if [[ "$outfile" != /* ]]; then
|
|
outfile="${PWD}/${outfile}"
|
|
fi
|
|
|
|
tempdir="${outfile}.tmp"
|
|
|
|
# Clean up any previous temporary files.
|
|
rm -f "${outfile}"
|
|
rm -rf "${tempdir}"
|
|
|
|
# Do repack
|
|
# We have to change working directory since ar only allows extracting to CWD.
|
|
mkdir "${tempdir}"
|
|
cp "${infile}" "${tempdir}/archive"
|
|
cd "${tempdir}"
|
|
"${LLVM_AR}" x "archive"
|
|
"${LLVM_AR}" --format=gnu qc "${outfile}" "$@"
|