summaryrefslogtreecommitdiff
path: root/Makefile
blob: ee7df4ba29ce969a0cb085f09b91be4a9d0dabc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#
# Makefile for the output source package
#

ifeq ($(KERNELRELEASE),)

MAKEFLAGS += --no-print-directory
SHELL := /bin/bash
BACKPORT_DIR := $(shell pwd)

KMODDIR ?= updates
ifneq ($(origin KLIB), undefined)
KMODPATH_ARG := "INSTALL_MOD_PATH=$(KLIB)"
else
KLIB := /lib/modules/$(shell uname -r)/
KMODPATH_ARG :=
endif
KLIB_BUILD ?= $(KLIB)/build/
KERNEL_CONFIG := $(KLIB_BUILD)/.config
KERNEL_MAKEFILE := $(KLIB_BUILD)/Makefile
CONFIG_MD5 := $(shell md5sum $(KERNEL_CONFIG) 2>/dev/null | sed 's/\s.*//')

export KLIB KLIB_BUILD BACKPORT_DIR KMODDIR KMODPATH_ARG

# disable built-in rules for this file
.SUFFIXES:

.PHONY: default
default:
	@$(MAKE) modules

.PHONY: mrproper
mrproper:
	@test -f .config && $(MAKE) clean || true
	@rm -f .config
	@rm -f .kernel_config_md5 Kconfig.versions Kconfig.kernel
	@rm -f backport-include/backport/autoconf.h

.DEFAULT:
	@set -e ; test -f local-symbols || (						\
	echo "/--------------"								;\
	echo "| You shouldn't run make in the backports tree, but only in"		;\
	echo "| the generated output. This here is only the skeleton code"		;\
	echo "| copied into the output directory. To use the backport system"		;\
	echo "| from scratch, go into the top-level directory and run"			;\
	echo "|	./gentree.py /path/to/linux-next/ /tmp/output"				;\
	echo "| and then make menuconfig/... in the output directory. See"		;\
	echo "|	./gentree.py --help"							;\
	echo "| for more options."							;\
	echo "\\--"									;\
	false)
	@set -e ; test -f $(KERNEL_CONFIG) || (						\
	echo "/--------------"								;\
	echo "| Your kernel headers are incomplete/not installed."			;\
	echo "| Please install kernel headers, including a .config"			;\
	echo "| file or use the KLIB/KLIB_BUILD make variables to"			;\
	echo "| set the kernel to build against, e.g."					;\
	echo "|   make KLIB=/lib/modules/3.1.7/"					;\
	echo "| to compile/install for the installed kernel 3.1.7"			;\
	echo "| (that isn't currently running.)"					;\
	echo "\\--"									;\
	false)
	@set -e ; if [ "$$(cat .kernel_config_md5 2>/dev/null)" != "$(CONFIG_MD5)" ]	;\
	then 										\
		echo -n "Generating local configuration database from kernel ..."	;\
		grep -v -f local-symbols $(KERNEL_CONFIG) | grep = | (			\
			while read l ; do						\
				if [ "$${l:0:7}" != "CONFIG_" ] ; then			\
					continue					;\
				fi							;\
				l=$${l:7}						;\
				n=$${l%%=*}						;\
				v=$${l#*=}						;\
				if [ "$$v" = "m" ] ; then				\
					echo config $$n					;\
					echo '    tristate' 				;\
				elif [ "$$v" = "y" ] ; then				\
					echo config $$n					;\
					echo '    bool'					;\
				else							\
					continue					;\
				fi							;\
				echo "    default $$v"					;\
				echo ""							;\
			done								\
		) > Kconfig.kernel							;\
		kver=$$($(MAKE) --no-print-directory -C $(KLIB_BUILD) kernelversion |	\
			sed 's/^\(\([3-5]\|2\.6\)\.[0-9]\+\).*/\1/;t;d')		;\
		test "$$kver" != "" || echo "Kernel version parse failed!"		;\
		test "$$kver" != ""							;\
		kvers="$$(seq 14 39 | sed 's/^/2.6./')"					;\
		kvers="$$kvers $$(seq 0 19 | sed 's/^/3./')"				;\
		kvers="$$kvers $$(seq 0 20 | sed 's/^/4./')"				;\
		kvers="$$kvers $$(seq 0 99 | sed 's/^/5./')"				;\
		print=0									;\
		for v in $$kvers ; do							\
			if [ "$$print" = "1" ] ; then					\
				echo config KERNEL_$$(echo $$v | tr . _)	;\
				echo "    def_bool y"					;\
			fi								;\
			if [ "$$v" = "$$kver" ] ; then print=1 ; fi			;\
		done > Kconfig.versions							;\
		# RHEL as well, sadly we need to grep for it				;\
		RHEL_MAJOR=$$(grep '^RHEL_MAJOR' $(KERNEL_MAKEFILE) | 			\
					sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
		RHEL_MINOR=$$(grep '^RHEL_MINOR' $(KERNEL_MAKEFILE) | 			\
					sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
		for v in $$(seq 0 $$RHEL_MINOR) ; do 					\
			echo config BACKPORT_RHEL_KERNEL_$${RHEL_MAJOR}_$$v		;\
			echo "    def_bool y"						;\
		done >> Kconfig.versions						;\
		echo " done."								;\
	fi										;\
	echo "$(CONFIG_MD5)" > .kernel_config_md5
	@$(MAKE) -f Makefile.real "$@"

.PHONY: defconfig-help
defconfig-help:
	@echo "Driver or subsystem configuration targets:"
	@set -e						;\
		bk_configs="$$(ls defconfigs/*)" 	;\
		for cfg in $$bk_configs; do		\
			echo "  defconfig-$${cfg##defconfigs/}"	;\
		done
	@echo ""

.PHONY: help
help: defconfig-help
	@echo "Cleaning targets:"
	@echo "  clean           - Remove most generated files but keep the config and"
	@echo "                    enough build support to build external modules"
	@echo "  mrproper        - Remove all generated files + config + various backup files"
	@echo ""
	@echo "Driver configuration help:"
	@echo "  defconfig-help  - List all prearranged defconfig-targets we have"
	@echo "                    designed for you. You can use this to find"
	@echo "                    driver specific configs in case all you really"
	@echo "                    need is to just compile one or a small group "
	@echo "                    of drivers."
	@echo ""
	@echo "Configuration targets:"
	@echo "  menuconfig      - Update current config utilising a menu based program"
	@echo "  oldconfig       - Update current config utilising a provided .config as base"
	@echo "  oldaskconfig    - ??"
	@echo "  silentoldconfig - Same as oldconfig, but quietly, additionally update deps"
	@echo "  allnoconfig     - New config where all options are answered with no"
	@echo "  allyesconfig    - New config where all options are accepted with yes"
	@echo "  allmodconfig    - New config selecting modules when possible"
	@echo "  alldefconfig    - New config with all symbols set to default"
	@echo "  randconfig      - New config with random answer to all options"
	@echo "  listnewconfig   - List new options"
	@echo "  olddefconfig    - Same as silentoldconfig but sets new symbols to their default value"
	@echo ""
	@echo "Other generic targets:"
	@echo "  all             - Build all targets marked with [*]"
	@echo "* modules         - Build all modules"
	@echo ""
	@echo "Architecture specific targets:"
	@echo "  install         - Install modules"
	@echo "  uninstall       - Uninstall modules"
	@echo ""
	@echo "Execute "make" or "make all" to build all targets marked with [*]"
else
include $(BACKPORT_DIR)/Makefile.kernel
endif