Root/scripts/mkmakefile

Source at commit cdde9cf73945d547acd3e96f9508c79e84ad0bf1 created 9 years 4 months ago.
By Maarten ter Huurne, MMC: JZ4740: Added support for CPU frequency changing
1#!/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
60

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