blob: 0cc04426074403458583b73339754c2a588bfa13 [file] [log] [blame]
Masahiro Yamada22433fc2014-02-04 17:24:27 +09001#!/bin/sh
2# Generates a small Makefile used in the root of the output
3# directory, to allow make to be started from there.
4# The Makefile also allow for more convinient build of external modules
5
6# Usage
7# $1 - Kernel src directory
8# $2 - Output directory
9# $3 - version
10# $4 - patchlevel
11
12
13test ! -r $2/Makefile -o -O $2/Makefile || exit 0
14# Only overwrite automatically generated Makefiles
15# (so we do not overwrite kernel Makefile)
16if test -e $2/Makefile && ! grep -q Automatically $2/Makefile
17then
18 exit 0
19fi
20if [ "${quiet}" != "silent_" ]; then
21 echo " GEN $2/Makefile"
22fi
23
24cat << EOF > $2/Makefile
25# Automatically generated by $0: don't edit
26
27VERSION = $3
28PATCHLEVEL = $4
29
30lastword = \$(word \$(words \$(1)),\$(1))
31makedir := \$(dir \$(call lastword,\$(MAKEFILE_LIST)))
32
33ifeq ("\$(origin V)", "command line")
34VERBOSE := \$(V)
35endif
36ifneq (\$(VERBOSE),1)
37Q := @
38endif
39
40MAKEARGS := -C $1
41MAKEARGS += O=\$(if \$(patsubst /%,,\$(makedir)),\$(CURDIR)/)\$(patsubst %/,%,\$(makedir))
42
43MAKEFLAGS += --no-print-directory
44
45.PHONY: all \$(MAKECMDGOALS)
46
47all := \$(filter-out all Makefile,\$(MAKECMDGOALS))
48
49all:
50 \$(Q)\$(MAKE) \$(MAKEARGS) \$(all)
51
52Makefile:;
53
54\$(all): all
55 @:
56
57%/: all
58 @:
59EOF