#!/bin/bash

MKLIBS_DIR="${FREETZ_BASE_DIR}/tools/build/bin"
MKLIBS_SCRIPT="${MKLIBS_DIR}/mklibs"
TARGET_TOOLCHAIN_STAGING_DIR="${FREETZ_BASE_DIR}/toolchain/target"
GNU_TARGET_NAME=${FREETZ_TARGET_ARCH}-linux
REAL_GNU_TARGET_NAME=${GNU_TARGET_NAME}-uclibc

mklibs() {
	# replaces all absolute sym links to make mklibs happy
	for link in $(find "${FILESYSTEM_MOD_DIR}" -name "*.so*" -lname "/*"); do
		file="$(realpath ${FILESYSTEM_MOD_DIR}$(readlink $link) | sed  "s#.*$FILESYSTEM_MOD_DIR/##")"
		temp="${link#$FILESYSTEM_MOD_DIR/}"
		while [ "${temp#*/}" != "$temp" ]; do
			temp="${temp#*/}"
			file="../$file"
		done
		echo2 "replacing $link --> $file"
		ln -sf "$file" "$link"
	done
	#
	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 }' >> ${MOD_DIR}/mklibs-progs
	# Run mklibs script, needs path to mklibs-readelf and objcopy
	PATH=${MKLIBS_DIR}:${TARGET_TOOLCHAIN_STAGING_DIR}/bin:$PATH \
		${MKLIBS_SCRIPT} -D -vvv \
		-d ${MOD_DIR}/mklibs-out \
		--sysroot ${FREETZ_BASE_DIR}/ \
		-L toolchain/target/lib \
		-L ${FILESYSTEM_MOD_DIR}/usr/lib/freetz \
		-L ${FILESYSTEM_MOD_DIR}/lib \
		-L ${FILESYSTEM_MOD_DIR}/usr/lib \
		--ldlib ${FILESYSTEM_MOD_DIR}/lib/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
	for lib in $(ls ${MOD_DIR}/mklibs-out/*.so.* 2>/dev/null); do \
		LIB="${lib##*/}"; \
		DEST="$(ls "${FILESYSTEM_MOD_DIR}/usr/lib/freetz/$LIB" 2>/dev/null)"; \
		[ -n "$DEST" ] || DEST="$(ls "${FILESYSTEM_MOD_DIR}/lib/$LIB" 2>/dev/null)"; \
		[ -n "$DEST" ] || continue; \
		echo2 "$lib"; \
		cp "$lib" "$DEST" || exit 1; \
	done
	rm -rf ${MOD_DIR}/mklibs-progs ${MOD_DIR}/mklibs-out

	return $rv
}