#!/bin/bash

mklibs() {
	local HOST_TOOLS_DIR="${FREETZ_BASE_DIR}/tools/build"
	local TARGET_TOOLCHAIN_STAGING_DIR="${FREETZ_BASE_DIR}/toolchain/target"
	local GNU_TARGET_NAME=${FREETZ_TARGET_ARCH_ENDIANNESS_DEPENDENT}-linux
	local REAL_GNU_TARGET_NAME=${GNU_TARGET_NAME}-uclibc
	local UCLIBC_DIR
	[ "$FREETZ_SEPARATE_AVM_UCLIBC" == "y" ] && UCLIBC_DIR="$FREETZ_LIBRARY_DIR" || UCLIBC_DIR="/lib"

	# replace all absolute symlinks with relative ones to make mklibs happy
	symlinks-abs2rel -r "${FILESYSTEM_MOD_DIR}" / "*.so*"

	rm -rf "${MOD_DIR}/mklibs-progs" "${MOD_DIR}/mklibs-out"
	mkdir -p "${MOD_DIR}/mklibs-out"
	# first find all programs and add them to the mklibs list
	find "${FILESYSTEM_MOD_DIR}" -type f -perm /100 -exec \
		file -r -N -F '' {} + | \
		awk ' /executable.*dynamically/ { print $1 }' > "${MOD_DIR}/mklibs-progs"
	# find all loadable objects that are not regular libraries and add them to the list as well
	find "${FILESYSTEM_MOD_DIR}" -type f -name "*.so*" -exec \
		file -r -N -F '' {} + | \
		awk ' /shared object/ { print $1 }' >> "${MOD_DIR}/mklibs-progs"
	# Run mklibs script, needs path to mklibs-readelf and objcopy
	PATH="${HOST_TOOLS_DIR}/bin:${HOST_TOOLS_DIR}/usr/bin:${TARGET_TOOLCHAIN_STAGING_DIR}/bin:${PATH}" \
		"${HOST_TOOLS_DIR}/bin/mklibs" \
		-vvv \
		-D \
		-d "${MOD_DIR}/mklibs-out" \
		--sysroot "${FREETZ_BASE_DIR}/" \
		-P toolchain/target/lib \
		-L "${FILESYSTEM_MOD_DIR}${FREETZ_LIBRARY_DIR}" \
		-L "${FILESYSTEM_MOD_DIR}/lib" \
		-L "${FILESYSTEM_MOD_DIR}/usr/lib" \
		--ldlib "${FILESYSTEM_MOD_DIR}${UCLIBC_DIR}/ld-uClibc.so.0" \
		--target ${REAL_GNU_TARGET_NAME} \
		$(cat "${MOD_DIR}/mklibs-progs") \
		> "${MOD_DIR}/mklibs.log" 2>&1
	local rv=$?
	# Copy stripped libs to their destination directory
	local LIB DEST DEST_DIR
	for LIB in $(find "${MOD_DIR}/mklibs-out" -type f -name "*.so.*"); do
		for DEST_DIR in ${FREETZ_LIBRARY_DIR#/} lib usr/lib; do
			DEST=$(ls "${FILESYSTEM_MOD_DIR}/${DEST_DIR}/${LIB##*/}" 2>/dev/null)
			[ -n "$DEST" ] && break
		done
		[ -n "$DEST" ] || error 1 "${FUNCNAME}: failed to determine the destination of ${LIB##*/}"
		if cp "$LIB" "$DEST"; then
			echo2 "Successfully copied mklibs-processed version of ${LIB##*/} to ${DEST#${FILESYSTEM_MOD_DIR}}"
		else
			error 1 "${FUNCNAME}: failed to copy ${LIB##*/} to the destination directory"
		fi
	done
	rm -rf "${MOD_DIR}/mklibs-progs" "${MOD_DIR}/mklibs-out"

	return $rv
}