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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 update-po-config \
7	localmodconfig localyesconfig
8
9# Added for U-Boot
10#  Linux has defconfig files in arch/$(SRCARCH)/configs/,
11#  on the other hand, U-Boot does in configs/.
12#  Set SRCARCH to .. fake this Makefile.
13SRCARCH := ..
14
15ifdef KBUILD_KCONFIG
16Kconfig := $(KBUILD_KCONFIG)
17else
18Kconfig := Kconfig
19endif
20
21ifeq ($(quiet),silent_)
22silent := -s
23endif
24
25# We need this, in case the user has it in its environment
26unexport CONFIG_
27
28xconfig: $(obj)/qconf
29	$< $(silent) $(Kconfig)
30
31gconfig: $(obj)/gconf
32	$< $(silent) $(Kconfig)
33
34menuconfig: $(obj)/mconf
35	$< $(silent) $(Kconfig)
36
37config: $(obj)/conf
38	$< $(silent) --oldaskconfig $(Kconfig)
39
40nconfig: $(obj)/nconf
41	$< $(silent) $(Kconfig)
42
43# This has become an internal implementation detail and is now deprecated
44# for external use.
45syncconfig: $(obj)/conf
46	$(Q)mkdir -p include/config include/generated
47	$< $(silent) --$@ $(Kconfig)
48
49localyesconfig localmodconfig: $(obj)/conf
50	$(Q)mkdir -p include/config include/generated
51	$(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
52	$(Q)if [ -f .config ]; then 					\
53			cmp -s .tmp.config .config ||			\
54			(mv -f .config .config.old.1;			\
55			 mv -f .tmp.config .config;			\
56			 $< $(silent) --oldconfig $(Kconfig);		\
57			 mv -f .config.old.1 .config.old)		\
58	else								\
59			mv -f .tmp.config .config;			\
60			$< $(silent) --oldconfig $(Kconfig);		\
61	fi
62	$(Q)rm -f .tmp.config
63
64# Create new linux.pot file
65# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
66update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
67	$(Q)$(kecho) "  GEN     config.pot"
68	$(Q)xgettext --default-domain=linux                         \
69	    --add-comments --keyword=_ --keyword=N_                 \
70	    --from-code=UTF-8                                       \
71	    --files-from=$(srctree)/scripts/kconfig/POTFILES.in     \
72	    --directory=$(srctree) --directory=$(objtree)           \
73	    --output $(obj)/config.pot
74	$(Q)sed -i s/CHARSET/UTF-8/ $(obj)/config.pot
75	$(Q)(for i in `ls $(srctree)/arch/*/Kconfig      \
76	    $(srctree)/arch/*/um/Kconfig`;               \
77	    do                                           \
78		$(kecho) "  GEN     $$i";                    \
79		$(obj)/kxgettext $$i                     \
80		     >> $(obj)/config.pot;               \
81	    done )
82	$(Q)$(kecho) "  GEN     linux.pot"
83	$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
84	    --output $(obj)/linux.pot
85	$(Q)rm -f $(obj)/config.pot
86
87# These targets map 1:1 to the commandline options of 'conf'
88simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
89	alldefconfig randconfig listnewconfig olddefconfig
90PHONY += $(simple-targets)
91
92$(simple-targets): $(obj)/conf
93	$< $(silent) --$@ $(Kconfig)
94
95PHONY += oldnoconfig silentoldconfig savedefconfig defconfig
96
97# oldnoconfig is an alias of olddefconfig, because people already are dependent
98# on its behavior (sets new symbols to their default value but not 'n') with the
99# counter-intuitive name.
100oldnoconfig: olddefconfig
101	@echo "  WARNING: \"oldnoconfig\" target will be removed after Linux 4.19"
102	@echo "            Please use \"olddefconfig\" instead, which is an alias."
103
104# We do not expect manual invokcation of "silentoldcofig" (or "syncconfig").
105silentoldconfig: syncconfig
106	@echo "  WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\""
107	@echo "            and is now an internal implementation detail."
108	@echo "            What you want is probably \"oldconfig\"."
109	@echo "            \"silentoldconfig\" will be removed after Linux 4.19"
110
111savedefconfig: $(obj)/conf
112	$< $(silent) --$@=defconfig $(Kconfig)
113
114defconfig: $(obj)/conf
115ifeq ($(KBUILD_DEFCONFIG),)
116	$< $(silent) --defconfig $(Kconfig)
117else
118ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
119	@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
120	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
121else
122	@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
123	$(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
124endif
125endif
126
127%_defconfig: $(obj)/conf
128	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
129
130# Added for U-Boot (backward compatibility)
131%_config: %_defconfig
132	@:
133
134configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
135
136%.config: $(obj)/conf
137	$(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
138	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
139	+$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
140
141PHONY += kvmconfig
142kvmconfig: kvm_guest.config
143	@:
144
145PHONY += xenconfig
146xenconfig: xen.config
147	@:
148
149PHONY += tinyconfig
150tinyconfig:
151	$(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
152
153# CHECK: -o cache_dir=<path> working?
154PHONY += testconfig
155testconfig: $(obj)/conf
156	$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
157	-o cache_dir=$(abspath $(obj)/tests/.cache) \
158	$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
159clean-dirs += tests/.cache
160
161# Help text used by make help
162help:
163	@echo  '  config	  - Update current config utilising a line-oriented program'
164	@echo  '  nconfig         - Update current config utilising a ncurses menu based'
165	@echo  '                    program'
166	@echo  '  menuconfig	  - Update current config utilising a menu based program'
167	@echo  '  xconfig	  - Update current config utilising a Qt based front-end'
168	@echo  '  gconfig	  - Update current config utilising a GTK+ based front-end'
169	@echo  '  oldconfig	  - Update current config utilising a provided .config as base'
170	@echo  '  localmodconfig  - Update current config disabling modules not loaded'
171	@echo  '  localyesconfig  - Update current config converting local mods to core'
172	@echo  '  defconfig	  - New config with default from ARCH supplied defconfig'
173	@echo  '  savedefconfig   - Save current config as ./defconfig (minimal config)'
174	@echo  '  allnoconfig	  - New config where all options are answered with no'
175	@echo  '  allyesconfig	  - New config where all options are accepted with yes'
176	@echo  '  allmodconfig	  - New config selecting modules when possible'
177	@echo  '  alldefconfig    - New config with all symbols set to default'
178	@echo  '  randconfig	  - New config with random answer to all options'
179	@echo  '  listnewconfig   - List new options'
180	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'
181	@echo  '                    default value without prompting'
182#	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
183#	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
184#	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
185
186# lxdialog stuff
187check-lxdialog  := $(srctree)/$(src)/lxdialog/check-lxdialog.sh
188
189# Use recursively expanded variables so we do not call gcc unless
190# we really need to do so. (Do not call gcc as part of make mrproper)
191HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
192                    -DLOCALE
193
194# ===========================================================================
195# Shared Makefile for the various kconfig executables:
196# conf:	  Used for defconfig, oldconfig and related targets
197# nconf:  Used for the nconfig target.
198#         Utilizes ncurses
199# mconf:  Used for the menuconfig target
200#         Utilizes the lxdialog package
201# qconf:  Used for the xconfig target
202#         Based on Qt which needs to be installed to compile it
203# gconf:  Used for the gconfig target
204#         Based on GTK+ which needs to be installed to compile it
205# object files used by all kconfig flavours
206
207lxdialog := lxdialog/checklist.o lxdialog/util.o lxdialog/inputbox.o
208lxdialog += lxdialog/textbox.o lxdialog/yesno.o lxdialog/menubox.o
209
210conf-objs	:= conf.o  zconf.tab.o
211mconf-objs     := mconf.o zconf.tab.o $(lxdialog)
212nconf-objs     := nconf.o zconf.tab.o nconf.gui.o
213kxgettext-objs	:= kxgettext.o zconf.tab.o
214qconf-cxxobjs	:= qconf.o
215qconf-objs	:= zconf.tab.o
216gconf-objs	:= gconf.o zconf.tab.o
217
218hostprogs-y := conf nconf mconf kxgettext qconf gconf
219
220targets		+= zconf.lex.c
221clean-files	:= qconf.moc .tmp_qtcheck .tmp_gtkcheck
222clean-files	+= gconf.glade.h
223clean-files     += config.pot linux.pot
224
225# Check that we have the required ncurses stuff installed for lxdialog (menuconfig)
226PHONY += $(obj)/dochecklxdialog
227$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/dochecklxdialog
228$(obj)/dochecklxdialog:
229	$(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_EXTRACFLAGS) $(HOSTLOADLIBES_mconf)
230
231always := dochecklxdialog
232
233# Add environment specific flags
234HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC) $(HOSTCFLAGS))
235HOST_EXTRACXXFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCXX) $(HOSTCXXFLAGS))
236
237# generated files seem to need this to find local include files
238HOSTCFLAGS_zconf.lex.o	:= -I$(src)
239HOSTCFLAGS_zconf.tab.o	:= -I$(src)
240
241HOSTLOADLIBES_qconf	= $(KC_QT_LIBS)
242HOSTCXXFLAGS_qconf.o	= $(KC_QT_CFLAGS)
243
244HOSTLOADLIBES_gconf	= `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0`
245HOSTCFLAGS_gconf.o	= `pkg-config --cflags gtk+-2.0 gmodule-2.0 libglade-2.0` \
246                          -Wno-missing-prototypes
247
248HOSTLOADLIBES_mconf   = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
249
250HOSTLOADLIBES_nconf	= $(shell \
251				pkg-config --libs menuw panelw ncursesw 2>/dev/null \
252				|| pkg-config --libs menu panel ncurses 2>/dev/null \
253				|| echo "-lmenu -lpanel -lncurses"  )
254$(obj)/qconf.o: $(obj)/.tmp_qtcheck
255
256ifeq ($(MAKECMDGOALS),xconfig)
257$(obj)/.tmp_qtcheck: $(src)/Makefile
258-include $(obj)/.tmp_qtcheck
259
260# Qt needs some extra effort...
261$(obj)/.tmp_qtcheck:
262	@set -e; $(kecho) "  CHECK   qt"; \
263	if pkg-config --exists Qt5Core; then \
264	    cflags="-std=c++11 -fPIC `pkg-config --cflags Qt5Core Qt5Gui Qt5Widgets`"; \
265	    libs=`pkg-config --libs Qt5Core Qt5Gui Qt5Widgets`; \
266	    moc=`pkg-config --variable=host_bins Qt5Core`/moc; \
267	elif pkg-config --exists QtCore; then \
268	    cflags=`pkg-config --cflags QtCore QtGui`; \
269	    libs=`pkg-config --libs QtCore QtGui`; \
270	    moc=`pkg-config --variable=moc_location QtCore`; \
271	else \
272	    echo >&2 "*"; \
273	    echo >&2 "* Could not find Qt via pkg-config."; \
274	    echo >&2 "* Please install either Qt 4.8 or 5.x. and make sure it's in PKG_CONFIG_PATH"; \
275	    echo >&2 "*"; \
276	    exit 1; \
277	fi; \
278	echo "KC_QT_CFLAGS=$$cflags" > $@; \
279	echo "KC_QT_LIBS=$$libs" >> $@; \
280	echo "KC_QT_MOC=$$moc" >> $@
281endif
282
283$(obj)/gconf.o: $(obj)/.tmp_gtkcheck
284
285ifeq ($(MAKECMDGOALS),gconfig)
286-include $(obj)/.tmp_gtkcheck
287
288# GTK+ needs some extra effort, too...
289$(obj)/.tmp_gtkcheck:
290	@if `pkg-config --exists gtk+-2.0 gmodule-2.0 libglade-2.0`; then		\
291		if `pkg-config --atleast-version=2.0.0 gtk+-2.0`; then			\
292			touch $@;								\
293		else									\
294			echo >&2 "*"; 							\
295			echo >&2 "* GTK+ is present but version >= 2.0.0 is required.";	\
296			echo >&2 "*";							\
297			false;								\
298		fi									\
299	else										\
300		echo >&2 "*"; 								\
301		echo >&2 "* Unable to find the GTK+ installation. Please make sure that"; 	\
302		echo >&2 "* the GTK+ 2.0 development package is correctly installed..."; 	\
303		echo >&2 "* You need gtk+-2.0, glib-2.0 and libglade-2.0."; 		\
304		echo >&2 "*"; 								\
305		false;									\
306	fi
307endif
308
309$(obj)/zconf.tab.o: $(obj)/zconf.lex.c
310
311$(obj)/qconf.o: $(obj)/qconf.moc
312
313quiet_cmd_moc = MOC     $@
314      cmd_moc = $(KC_QT_MOC) -i $< -o $@
315
316$(obj)/%.moc: $(src)/%.h $(obj)/.tmp_qtcheck
317	$(call cmd,moc)
318
319# Extract gconf menu items for i18n support
320$(obj)/gconf.glade.h: $(obj)/gconf.glade
321	$(Q)intltool-extract --type=gettext/glade --srcdir=$(srctree) \
322	$(obj)/gconf.glade
323