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 := $(KBUILD_KCONFIG)
11else
12Kconfig := Kconfig
13endif
14
15ifndef KBUILD_DEFCONFIG
16KBUILD_DEFCONFIG := defconfig
17endif
18
19ifeq ($(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