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#!@SH@
#
# opkhelper
# src/oh-strip.sh
# 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 2 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/>.
. '@pkgdatadir@/load.sm'
CR='
'
KEEP_DEBUG='false'
main()
{
dir='dest'
oh_init
while getopts 'd:k' opt; do
case "${opt}" in
d)
dir="${OPTARG}"
;;
k)
KEEP_DEBUG='true'
;;
?)
oh_error "$(oh_get_msg 'bad_opt')"
exit 1
;;
esac
done
find "${dir}" -type f -a ! -path '*/debug/*' -a -name '*.so*' | \
while IFS="${CR}" read file; do
if file "${file}" | grep 'ELF.*shared' \
>/dev/null 2>&1; then
file="${file#${dir}}"
file="/${file##/}"
strip_so "${file}"
fi
done
find "${dir}" -type f -a ! -path '*/debug/*' -a -perm '-a+x' | \
while IFS="${CR}" read file; do
if file "${file}" | grep -E 'ELF.*(executable|shared)' \
>/dev/null 2>&1; then
file="${file#${dir}}"
file="/${file##/}"
strip_exe "${file}"
fi
done
find "${dir}" -type f -a ! -path '*/debug/*' -a -name 'lib*.a' \
-a ! -name '*_g.a' | while IFS="{CR}" read file; do
file="${file#${dir}}"
file="/${file##/}"
strip_a "${file}"
done
}
strip_so()
{
file="${1}"
debug=''
oh_info "$(oh_get_msg 'strip_so')" "${file}"
if ${KEEP_DEBUG}; then
debug="$(keep_debug "${file}")"
fi
${STRIP} --remove-section=.comment --remove-section=.note \
--strip-unneeded "${dir}/${file}"
if [ -n "${debug}" ]; then
link_debug "${file}" "${debug}"
fi
}
strip_exe()
{
file="${1}"
debug=''
oh_info "$(oh_get_msg 'strip_exe')" "${file}"
if ${KEEP_DEBUG}; then
debug="$(keep_debug "${file}")"
fi
${STRIP} --remove-section=.comment --remove-section=.note \
"${dir}/${file}"
if [ -n "${debug}" ]; then
link_debug "${file}" "${debug}"
fi
}
strip_a()
{
file="${1}"
oh_info "$(oh_get_msg 'strip_a')" "${file}"
${STRIP} --strip-debug "${dir}/${file}"
}
keep_debug()
{
file="${1}"
build_id_parts=''
debug=''
if ! file "${dir}/${file}" | grep 'not stripped' >/dev/null 2>&1; then
return
fi
build_id_parts="$(${READELF} -n "${dir}/${file}" | sed -n \
's/^.*Build ID: \([0-9a-f][0-9a-f]\)\([0-9a-f]*\)$/\1 \2/p')"
if [ -z "${build_id_parts}" ]; then
return
fi
debug="/usr/lib/debug/.build-id/${build_id_parts% *}"
debug="${debug}/${build_id_parts#* }.debug"
mkdir -p "${dir}/${debug%/*}"
${OBJCOPY} --only-keep-debug --compress-debug-sections \
"${dir}/${file}" "${dir}/${debug}"
chmod 644 "${dir}/${debug}"
printf '%s\n' "${debug}"
}
link_debug()
{
file="${1}"
debug="${2}"
${OBJCOPY} --add-gnu-debuglink="${dir}/${debug}" "${dir}/${file}"
}
main "${@}"
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