#!/bin/sh# SPDX-License-Identifier: GPL-2.0-only set -eu destdir=${1} is_enabled() {	grep -q "^$1=y" include/config/auto.conf} find_in_scripts() {	find scripts \		\( -name atomic -o -name dtc -o -name kconfig -o -name package \) -prune -o \		! -name unifdef -a ! -name mk_elfconfig -a \( -type f -o -type l \) -print} mkdir -p "${destdir}" (	cd "${srctree}"	echo Makefile	find "arch/${SRCARCH}" -maxdepth 1 -name 'Makefile*'	find "arch/${SRCARCH}" -name generated -prune -o -name include -type d -print	find "arch/${SRCARCH}" -name Kbuild.platforms -o -name Platform	find include \( -name config -o -name generated \) -prune -o \( -type f -o -type l \) -print	find_in_scripts) | tar -c -f - -C "${srctree}" -T - | tar -xf - -C "${destdir}" {	if is_enabled CONFIG_OBJTOOL; then		echo tools/objtool/objtool	fi 	echo Module.symvers	echo "arch/${SRCARCH}/include/generated"	echo include/config/auto.conf	echo include/config/kernel.release	echo include/generated	find_in_scripts 	if is_enabled CONFIG_GCC_PLUGINS; then		find scripts/gcc-plugins -name '*.so'	fi} | tar -c -f - -T - | tar -xf - -C "${destdir}" # When ${CC} and ${HOSTCC} differ, rebuild host programs using ${CC}.## This caters to host programs that participate in Kbuild. objtool and# resolve_btfids are out of scope.if [ "${CC}" != "${HOSTCC}" ]; then	cat "${destdir}/scripts/Makefile" - <<-'EOF' > "${destdir}/scripts/Kbuild"	subdir-y += basic	hostprogs-always-y += mod/modpost	mod/modpost-objs := $(addprefix mod/, modpost.o file2alias.o sumversion.o symsearch.o)	EOF 	# HOSTCXX is not overridden. The C++ compiler is used to build:	# - scripts/kconfig/qconf, which is unneeded for external module builds	# - GCC plugins, which will not work on the installed system even after	#   being rebuilt.	#	# Clear VPATH and srcroot because the source files reside in the output	# directory.	# shellcheck disable=SC2016 # $(MAKE) and $(build) will be expanded by Make	"${MAKE}" run-command KBUILD_RUN_COMMAND='+$(MAKE) HOSTCC='"${CC}"' VPATH= srcroot=. $(build)='"$(realpath --relative-base=. "${destdir}")"/scripts 	rm -f "${destdir}/scripts/Kbuild"fi find "${destdir}" \( -name '.*.cmd' -o -name '*.o' \) -delete