xref: /openbmc/linux/scripts/kconfig/Makefile (revision 7b73a9c8) 
1# SPDX-License-Identifier: GPL-2.0
2# ===========================================================================
3# Kernel configuration targets
4# These targets are used from top-level makefile
5
6PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \
7	build_menuconfig build_nconfig build_gconfig build_xconfig
8
9ifdef KBUILD_KCONFIG
10Kconfig := $(KBUILD_KCONFIG)
11else
12Kconfig := Kconfig
13endif
14
15ifndef KBUILD_DEFCONFIG
16KBUILD_DEFCONFIG := defconfig
17endif
18
19ifeq ($(quiet),silent_)
20silent := -s
21endif
22
23# We need this, in case the user has it in its environment
24unexport CONFIG_
25
26xconfig: $(obj)/qconf
27	$< $(silent) $(Kconfig)
28
29gconfig: $(obj)/gconf
30	$< $(silent) $(Kconfig)
31
32menuconfig: $(obj)/mconf
33	$< $(silent) $(Kconfig)
34
35config: $(obj)/conf
36	$< $(silent) --oldaskconfig $(Kconfig)
37
38nconfig: $(obj)/nconf
39	$< $(silent) $(Kconfig)
40
41build_menuconfig: $(obj)/mconf
42
43build_nconfig: $(obj)/nconf
44
45build_gconfig: $(obj)/gconf
46
47build_xconfig: $(obj)/qconf
48
49localyesconfig localmodconfig: $(obj)/conf
50	$(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
51	$(Q)if [ -f .config ]; then 					\
52			cmp -s .tmp.config .config ||			\
53			(mv -f .config .config.old.1;			\
54			 mv -f .tmp.config .config;			\
55			 $< $(silent) --oldconfig $(Kconfig);		\
56			 mv -f .config.old.1 .config.old)		\
57	else								\
58			mv -f .tmp.config .config;			\
59			$< $(silent) --oldconfig $(Kconfig);		\
60	fi
61	$(Q)rm -f .tmp.config
62
63# These targets map 1:1 to the commandline options of 'conf'
64#
65# Note:
66#  syncconfig has become an internal implementation detail and is now
67#  deprecated for external use
68simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
69	alldefconfig randconfig listnewconfig olddefconfig syncconfig \
70	helpnewconfig
71
72PHONY += $(simple-targets)
73
74$(simple-targets): $(obj)/conf
75	$< $(silent) --$@ $(Kconfig)
76
77PHONY += savedefconfig defconfig
78
79savedefconfig: $(obj)/conf
80	$< $(silent) --$@=defconfig $(Kconfig)
81
82defconfig: $(obj)/conf
83ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
84	@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
85	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
86else
87	@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
88	$(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
89endif
90
91%_defconfig: $(obj)/conf
92	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
93
94configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
95
96%.config: $(obj)/conf
97	$(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
98	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
99	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
100
101PHONY += kvmconfig
102kvmconfig: kvm_guest.config
103	@:
104
105PHONY += xenconfig
106xenconfig: xen.config
107	@:
108
109PHONY += tinyconfig
110tinyconfig:
111	$(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
112
113# CHECK: -o cache_dir=<path> working?
114PHONY += testconfig
115testconfig: $(obj)/conf
116	$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
117	-o cache_dir=$(abspath $(obj)/tests/.cache) \
118	$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
119clean-files += tests/.cache
120
121# Help text used by make help
122help:
123	@echo  '  config	  - Update current config utilising a line-oriented program'
124	@echo  '  nconfig         - Update current config utilising a ncurses menu based program'
125	@echo  '  menuconfig	  - Update current config utilising a menu based program'
126	@echo  '  xconfig	  - Update current config utilising a Qt based front-end'
127	@echo  '  gconfig	  - Update current config utilising a GTK+ based front-end'
128	@echo  '  oldconfig	  - Update current config utilising a provided .config as base'
129	@echo  '  localmodconfig  - Update current config disabling modules not loaded'
130	@echo  '  localyesconfig  - Update current config converting local mods to core'
131	@echo  '  defconfig	  - New config with default from ARCH supplied defconfig'
132	@echo  '  savedefconfig   - Save current config as ./defconfig (minimal config)'
133	@echo  '  allnoconfig	  - New config where all options are answered with no'
134	@echo  '  allyesconfig	  - New config where all options are accepted with yes'
135	@echo  '  allmodconfig	  - New config selecting modules when possible'
136	@echo  '  alldefconfig    - New config with all symbols set to default'
137	@echo  '  randconfig	  - New config with random answer to all options'
138	@echo  '  listnewconfig   - List new options'
139	@echo  '  helpnewconfig   - List new options and help text'
140	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'
141	@echo  '                    default value without prompting'
142	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
143	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel'
144	@echo  '                    support'
145	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
146	@echo  '  testconfig	  - Run Kconfig unit tests (requires python3 and pytest)'
147
148# ===========================================================================
149# object files used by all kconfig flavours
150common-objs	:= confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
151		   symbol.o util.o
152
153$(obj)/lexer.lex.o: $(obj)/parser.tab.h
154HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)
155HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(src)
156
157# conf: Used for defconfig, oldconfig and related targets
158hostprogs-y	+= conf
159conf-objs	:= conf.o $(common-objs)
160
161# nconf: Used for the nconfig target based on ncurses
162hostprogs-y	+= nconf
163nconf-objs	:= nconf.o nconf.gui.o $(common-objs)
164
165HOSTLDLIBS_nconf	= $(shell . $(obj)/nconf-cfg && echo $$libs)
166HOSTCFLAGS_nconf.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)
167HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)
168
169$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
170
171# mconf: Used for the menuconfig target based on lxdialog
172hostprogs-y	+= mconf
173lxdialog	:= $(addprefix lxdialog/, \
174		     checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
175mconf-objs	:= mconf.o $(lxdialog) $(common-objs)
176
177HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
178$(foreach f, mconf.o $(lxdialog), \
179  $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
180
181$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
182
183# qconf: Used for the xconfig target based on Qt
184hostprogs-y	+= qconf
185qconf-cxxobjs	:= qconf.o
186qconf-objs	:= images.o $(common-objs)
187
188HOSTLDLIBS_qconf	= $(shell . $(obj)/qconf-cfg && echo $$libs)
189HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/qconf-cfg && echo $$cflags)
190
191$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
192
193quiet_cmd_moc = MOC     $@
194      cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
195
196$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
197	$(call cmd,moc)
198
199# gconf: Used for the gconfig target based on GTK+
200hostprogs-y	+= gconf
201gconf-objs	:= gconf.o images.o $(common-objs)
202
203HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)
204HOSTCFLAGS_gconf.o  = $(shell . $(obj)/gconf-cfg && echo $$cflags)
205
206$(obj)/gconf.o: $(obj)/gconf-cfg
207
208# check if necessary packages are available, and configure build flags
209filechk_conf_cfg = $(CONFIG_SHELL) $<
210
211$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
212	$(call filechk,conf_cfg)
213
214clean-files += *conf-cfg
215