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 syncconfig \
7 localmodconfig localyesconfig
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
37# This has become an internal implementation detail and is now deprecated
38# for external use.
39syncconfig: $(obj)/conf
40 $(Q)mkdir -p include/config include/generated
41 $< $(silent) --$@ $(Kconfig)
42
43localyesconfig localmodconfig: $(obj)/conf
44 $(Q)mkdir -p include/config include/generated
45 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
46 $(Q)if [ -f .config ]; then \
47 cmp -s .tmp.config .config || \
48 (mv -f .config .config.old.1; \
49 mv -f .tmp.config .config; \
50 $< $(silent) --oldconfig $(Kconfig); \
51 mv -f .config.old.1 .config.old) \
52 else \
53 mv -f .tmp.config .config; \
54 $< $(silent) --oldconfig $(Kconfig); \
55 fi
56 $(Q)rm -f .tmp.config
57
58# These targets map 1:1 to the commandline options of 'conf'
59simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
60 alldefconfig randconfig listnewconfig olddefconfig
61PHONY += $(simple-targets)
62
63$(simple-targets): $(obj)/conf
64 $< $(silent) --$@ $(Kconfig)
65
66PHONY += oldnoconfig silentoldconfig savedefconfig defconfig
67
68# oldnoconfig is an alias of olddefconfig, because people already are dependent
69# on its behavior (sets new symbols to their default value but not 'n') with the
70# counter-intuitive name.
71oldnoconfig: olddefconfig
72 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19"
73 @echo " Please use \"olddefconfig\" instead, which is an alias."
74
75# We do not expect manual invokcation of "silentoldcofig" (or "syncconfig").
76silentoldconfig: syncconfig
77 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\""
78 @echo " and is now an internal implementation detail."
79 @echo " What you want is probably \"oldconfig\"."
80 @echo " \"silentoldconfig\" will be removed after Linux 4.19"
81
82savedefconfig: $(obj)/conf
83 $< $(silent) --$@=defconfig $(Kconfig)
84
85defconfig: $(obj)/conf
86ifeq ($(KBUILD_DEFCONFIG),)
87 $< $(silent) --defconfig $(Kconfig)
88else
89ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
90 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
91 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
92else
93 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
94 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
95endif
96endif
97
98%_defconfig: $(obj)/conf
99 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
100
101configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
102
103%.config: $(obj)/conf
104 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
105 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
106 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
107
108PHONY += kvmconfig
109kvmconfig: kvm_guest.config
110 @:
111
112PHONY += xenconfig
113xenconfig: xen.config
114 @:
115
116PHONY += tinyconfig
117tinyconfig:
118 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
119
120# CHECK: -o cache_dir=<path> working?
121PHONY += testconfig
122testconfig: $(obj)/conf
123 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
124 -o cache_dir=$(abspath $(obj)/tests/.cache) \
125 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
126clean-dirs += tests/.cache
127
128# Help text used by make help
129help:
130 @echo ' config - Update current config utilising a line-oriented program'
131 @echo ' nconfig - Update current config utilising a ncurses menu based program'
132 @echo ' menuconfig - Update current config utilising a menu based program'
133 @echo ' xconfig - Update current config utilising a Qt based front-end'
134 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
135 @echo ' oldconfig - Update current config utilising a provided .config as base'
136 @echo ' localmodconfig - Update current config disabling modules not loaded'
137 @echo ' localyesconfig - Update current config converting local mods to core'
138 @echo ' defconfig - New config with default from ARCH supplied defconfig'
139 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
140 @echo ' allnoconfig - New config where all options are answered with no'
141 @echo ' allyesconfig - New config where all options are accepted with yes'
142 @echo ' allmodconfig - New config selecting modules when possible'
143 @echo ' alldefconfig - New config with all symbols set to default'
144 @echo ' randconfig - New config with random answer to all options'
145 @echo ' listnewconfig - List new options'
146 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
147 @echo ' default value without prompting'
148 @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
149 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
150 @echo ' tinyconfig - Configure the tiniest possible kernel'
151 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
152
153# ===========================================================================
154# Shared Makefile for the various kconfig executables:
155# conf: Used for defconfig, oldconfig and related targets
156# object files used by all kconfig flavours
157
158conf-objs := conf.o zconf.tab.o
159
160hostprogs-y := conf
161
162targets += zconf.lex.c
163
164# generated files seem to need this to find local include files
165HOSTCFLAGS_zconf.lex.o := -I$(src)
166HOSTCFLAGS_zconf.tab.o := -I$(src)
167
168# nconf: Used for the nconfig target based on ncurses
169hostprogs-y += nconf
170nconf-objs := nconf.o zconf.tab.o nconf.gui.o
171
172HOSTLOADLIBES_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs)
173HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
174HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
175
176$(obj)/nconf.o: $(obj)/.nconf-cfg
177
178# mconf: Used for the menuconfig target based on lxdialog
179hostprogs-y += mconf
180lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
181mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))
182
183HOSTLOADLIBES_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
184$(foreach f, mconf.o $(lxdialog), \
185 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))
186
187$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/.mconf-cfg
188
189# qconf: Used for the xconfig target based on Qt
190hostprogs-y += qconf
191qconf-cxxobjs := qconf.o
192qconf-objs := zconf.tab.o
193
194HOSTLOADLIBES_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs)
195HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags)
196
197$(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
198
199quiet_cmd_moc = MOC $@
200 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@
201
202$(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
203 $(call cmd,moc)
204
205# gconf: Used for the gconfig target based on GTK+
206hostprogs-y += gconf
207gconf-objs := gconf.o zconf.tab.o
208
209HOSTLOADLIBES_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
210HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags)
211
212$(obj)/gconf.o: $(obj)/.gconf-cfg
213
214$(obj)/zconf.tab.o: $(obj)/zconf.lex.c
215
216# check if necessary packages are available, and configure build flags
217define filechk_conf_cfg
218 $(CONFIG_SHELL) $<
219endef
220
221$(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE
222 $(call filechk,conf_cfg)
223
224clean-files += .*conf-cfg