Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 := $(KBUILD_KCONFIG)
11else
12Kconfig := Kconfig
13endif
14
15ifeq ($(quiet),silent_)
16silent := -s
17endif
18
19# We need this, in case the user has it in its environment
20unexport CONFIG_
21
22xconfig: $(obj)/qconf
23 $< $(silent) $(Kconfig)
24
25gconfig: $(obj)/gconf
26 $< $(silent) $(Kconfig)
27
28menuconfig: $(obj)/mconf
29 $< $(silent) $(Kconfig)
30
31config: $(obj)/conf
32 $< $(silent) --oldaskconfig $(Kconfig)
33
34nconfig: $(obj)/nconf
35 $< $(silent) $(Kconfig)
36
37build_menuconfig: $(obj)/mconf
38
39build_nconfig: $(obj)/nconf
40
41build_gconfig: $(obj)/gconf
42
43build_xconfig: $(obj)/qconf
44
45localyesconfig localmodconfig: $(obj)/conf
46 $(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
47 $(Q)if [ -f .config ]; then \
48 cmp -s .tmp.config .config || \
49 (mv -f .config .config.old.1; \
50 mv -f .tmp.config .config; \
51 $< $(silent) --oldconfig $(Kconfig); \
52 mv -f .config.old.1 .config.old) \
53 else \
54 mv -f .tmp.config .config; \
55 $< $(silent) --oldconfig $(Kconfig); \
56 fi
57 $(Q)rm -f .tmp.config
58
59# These targets map 1:1 to the commandline options of 'conf'
60#
61# Note:
62# syncconfig has become an internal implementation detail and is now
63# deprecated for external use
64simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
65 alldefconfig randconfig listnewconfig olddefconfig syncconfig \
66 helpnewconfig yes2modconfig mod2yesconfig
67
68PHONY += $(simple-targets)
69
70$(simple-targets): $(obj)/conf
71 $< $(silent) --$@ $(Kconfig)
72
73PHONY += savedefconfig defconfig
74
75savedefconfig: $(obj)/conf
76 $< $(silent) --$@=defconfig $(Kconfig)
77
78defconfig: $(obj)/conf
79ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
80 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
81 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
82else
83 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
84 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
85endif
86
87%_defconfig: $(obj)/conf
88 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
89
90configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
91
92%.config: $(obj)/conf
93 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
94 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
95 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
96
97PHONY += kvmconfig
98kvmconfig: kvm_guest.config
99 @:
100
101PHONY += xenconfig
102xenconfig: xen.config
103 @:
104
105PHONY += tinyconfig
106tinyconfig:
107 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
108
109# CHECK: -o cache_dir=<path> working?
110PHONY += testconfig
111testconfig: $(obj)/conf
112 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
113 -o cache_dir=$(abspath $(obj)/tests/.cache) \
114 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
115clean-files += tests/.cache
116
117# Help text used by make help
118help:
119 @echo ' config - Update current config utilising a line-oriented program'
120 @echo ' nconfig - Update current config utilising a ncurses menu based program'
121 @echo ' menuconfig - Update current config utilising a menu based program'
122 @echo ' xconfig - Update current config utilising a Qt based front-end'
123 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
124 @echo ' oldconfig - Update current config utilising a provided .config as base'
125 @echo ' localmodconfig - Update current config disabling modules not loaded'
126 @echo ' localyesconfig - Update current config converting local mods to core'
127 @echo ' defconfig - New config with default from ARCH supplied defconfig'
128 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
129 @echo ' allnoconfig - New config where all options are answered with no'
130 @echo ' allyesconfig - New config where all options are accepted with yes'
131 @echo ' allmodconfig - New config selecting modules when possible'
132 @echo ' alldefconfig - New config with all symbols set to default'
133 @echo ' randconfig - New config with random answer to all options'
134 @echo ' yes2modconfig - Change answers from yes to mod if possible'
135 @echo ' mod2yesconfig - Change answers from mod to yes if possible'
136 @echo ' listnewconfig - List new options'
137 @echo ' helpnewconfig - List new options and help text'
138 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
139 @echo ' default value without prompting'
140 @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
141 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel'
142 @echo ' support'
143 @echo ' tinyconfig - Configure the tiniest possible kernel'
144 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
145
146# ===========================================================================
147# object files used by all kconfig flavours
148common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
149 symbol.o util.o
150
151$(obj)/lexer.lex.o: $(obj)/parser.tab.h
152HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src)
153HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
154
155# conf: Used for defconfig, oldconfig and related targets
156hostprogs += conf
157conf-objs := conf.o $(common-objs)
158
159# nconf: Used for the nconfig target based on ncurses
160hostprogs += nconf
161nconf-objs := nconf.o nconf.gui.o $(common-objs)
162
163HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs)
164HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
165HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
166
167$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
168
169# mconf: Used for the menuconfig target based on lxdialog
170hostprogs += mconf
171lxdialog := $(addprefix lxdialog/, \
172 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
173mconf-objs := mconf.o $(lxdialog) $(common-objs)
174
175HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
176$(foreach f, mconf.o $(lxdialog), \
177 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
178
179$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
180
181# qconf: Used for the xconfig target based on Qt
182hostprogs += qconf
183qconf-cxxobjs := qconf.o
184qconf-objs := images.o $(common-objs)
185
186HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs)
187HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
188
189$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
190
191quiet_cmd_moc = MOC $@
192 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
193
194$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
195 $(call cmd,moc)
196
197# gconf: Used for the gconfig target based on GTK+
198hostprogs += gconf
199gconf-objs := gconf.o images.o $(common-objs)
200
201HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs)
202HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags)
203
204$(obj)/gconf.o: $(obj)/gconf-cfg
205
206# check if necessary packages are available, and configure build flags
207filechk_conf_cfg = $(CONFIG_SHELL) $<
208
209$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
210 $(call filechk,conf_cfg)
211
212clean-files += *conf-cfg