#!@@SHELL@@
#
# 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/>.

. @@LIBDIR@@/opkhelper/messages

print_usage()
{
	printf 'Usage: %s [-g] [-l] binaryfile...\n' "${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 [ ${#} -gt 0 ]; do
	oh_info 'Stripping symbols from file "%s"...' "${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}")" || \
			oh_error 'Cannot make directory path to debugging object'
		${OBJCOPY:-objcopy} \
			--only-keep-debug --compress-debug-sections \
			"dest/${1}" "dest/usr/lib/debug/${1}" || \
			oh_error 'Cannot make debugging object'
		${OBJCOPY:-objcopy} \
			--add-gnu-debuglink="dest/usr/lib/debug/${1}" \
			"dest/${1}" || \
			oh_error 'Cannot add GDB link'
		chmod 644 "dest/usr/lib/debug/${1}" || \
			oh_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.
	${STRIP:-strip} -g "dest/${1}" || oh_error 'Cannot strip object'
	shift
done