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|
#! /bin/sh
#
# opkhelper
# src/oh-strip
# Strip binary objects of symbols.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
print_usage()
{
printf 'Usage: %s [-g] [-l] binaryfile...\n' "$1"
}
error()
{
printf 'oh-strip: Error: %s\n' "${1}"
exit 1
}
opts=$(getopt -n "${0}" -o 'gl' -- "${@}")
if [ ${?} -ne 0 ]; then
print_usage "${0}" >&2
exit 1;
fi
eval set -- "${opts}"
while true; do
case "${1}" in
-g)
make_dbg_obj=true
shift
;;
-l)
is_lib=true
shift
;;
--)
shift
break
;;
*)
print_usage "${0}" >&2
exit 1
;;
esac
done
if [ -z "${make_dbg_obj}" ]; then
make_dbg_obj=false
fi
if [ -z "${is_lib}" ]; then
is_lib=false
fi
if [ ${#} -eq 0 ]; then
print_usage ${0} >&2
exit 1
fi
# Iterate over object files.
while [ ${#} -gt 0 ]; do
printf 'oh-strip: Stripping symbols from file "%s"...\n' "${1}"
if ${make_dbg_obj}; then
# Copy debugging symbols into a debugging object file and add a GDB link
# from the original object file to the debugging object file.
mkdir -p "$(dirname "dest/usr/lib/debug/${1}")" || \
error 'Cannot make directory path to debugging object'
objcopy --only-keep-debug --compress-debug-sections "dest/${1}" \
"dest/usr/lib/debug/${1}" || error 'Cannot make debugging object'
objcopy --add-gnu-debuglink="dest/usr/lib/debug/${1}" "dest/${1}" || \
error 'Cannot add GDB link'
chmod 644 "dest/usr/lib/debug/${1}" || \
error 'Cannot set mode on debugging object'
fi
# Strip the object file of symbols.
# TODO: If the file is not a library, strip it of all symbols.
strip -g "dest/${1}" || error 'Cannot strip object'
shift
done
|
