1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# Generates a small Makefile used in the root of the output 4# directory, to allow make to be started from there. 5# The Makefile also allow for more convinient build of external modules 6 7# Usage 8# $1 - Kernel src directory 9 10# Only overwrite automatically generated Makefiles 11# (so we do not overwrite kernel Makefile) 12if test -e Makefile && ! grep -q Automatically Makefile 13then 14 exit 0 15fi 16if [ "${quiet}" != "silent_" ]; then 17 echo " GEN Makefile" 18fi 19 20cat << EOF > Makefile 21# Automatically generated by $0: don't edit 22 23ifeq ("\$(origin V)", "command line") 24VERBOSE := \$(V) 25endif 26ifneq (\$(VERBOSE),1) 27Q := @ 28endif 29 30MAKEFLAGS += --no-print-directory 31 32.PHONY: __sub-make \$(MAKECMDGOALS) 33 34__sub-make: 35 \$(Q)\$(MAKE) -C $1 O=\$(CURDIR) \$(MAKECMDGOALS) 36 37\$(filter-out __sub-make, \$(MAKECMDGOALS)): __sub-make 38 @: 39EOF 40