Makefile.lib (6120681bdf1a1c648e8c555704b71e04abe2e899) Makefile.lib (dfd402a4c4baae42398ce9180ff424d589b8bffc)
1# SPDX-License-Identifier: GPL-2.0
2# Backward compatibility
3asflags-y += $(EXTRA_AFLAGS)
4ccflags-y += $(EXTRA_CFLAGS)
5cppflags-y += $(EXTRA_CPPFLAGS)
6ldflags-y += $(EXTRA_LDFLAGS)
1# SPDX-License-Identifier: GPL-2.0
2# Backward compatibility
3asflags-y += $(EXTRA_AFLAGS)
4ccflags-y += $(EXTRA_CFLAGS)
5cppflags-y += $(EXTRA_CPPFLAGS)
6ldflags-y += $(EXTRA_LDFLAGS)
7always-y += $(always)
8hostprogs += $(hostprogs-y) $(hostprogs-m)
9
10# flags that take effect in current and sub directories
11KBUILD_AFLAGS += $(subdir-asflags-y)
12KBUILD_CFLAGS += $(subdir-ccflags-y)
13
14# Figure out what we need to build from the various variables
15# ===========================================================================
16

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32# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a
33# and add the directory to the list of dirs to descend into: $(subdir-y)
34# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
35# and add the directory to the list of dirs to descend into: $(subdir-m)
36__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
37subdir-y += $(__subdir-y)
38__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
39subdir-m += $(__subdir-m)
7
8# flags that take effect in current and sub directories
9KBUILD_AFLAGS += $(subdir-asflags-y)
10KBUILD_CFLAGS += $(subdir-ccflags-y)
11
12# Figure out what we need to build from the various variables
13# ===========================================================================
14

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30# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a
31# and add the directory to the list of dirs to descend into: $(subdir-y)
32# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
33# and add the directory to the list of dirs to descend into: $(subdir-m)
34__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
35subdir-y += $(__subdir-y)
36__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
37subdir-m += $(__subdir-m)
40ifdef need-builtin
41obj-y := $(patsubst %/, %/built-in.a, $(obj-y))
38obj-y := $(patsubst %/, %/built-in.a, $(obj-y))
42else
43obj-y := $(filter-out %/, $(obj-y))
44endif
45obj-m := $(filter-out %/, $(obj-m))
46
47# Subdirectories we need to descend into
48subdir-ym := $(sort $(subdir-y) $(subdir-m))
49
50# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
51multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
52multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
53multi-used := $(multi-used-y) $(multi-used-m)
54
55# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
56# tell kbuild to descend
57subdir-obj-y := $(filter %/built-in.a, $(obj-y))
58
59# Replace multi-part objects by their individual parts,
60# including built-in.a from subdirectories
61real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
62real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
63
39obj-m := $(filter-out %/, $(obj-m))
40
41# Subdirectories we need to descend into
42subdir-ym := $(sort $(subdir-y) $(subdir-m))
43
44# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
45multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
46multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
47multi-used := $(multi-used-y) $(multi-used-m)
48
49# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
50# tell kbuild to descend
51subdir-obj-y := $(filter %/built-in.a, $(obj-y))
52
53# Replace multi-part objects by their individual parts,
54# including built-in.a from subdirectories
55real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
56real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
57
64always-y += $(always-m)
65
66# DTB
67# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
68extra-y += $(dtb-y)
69extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
70
71ifneq ($(CHECK_DTBS),)
72extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
73extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
74endif
75
58# DTB
59# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
60extra-y += $(dtb-y)
61extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
62
63ifneq ($(CHECK_DTBS),)
64extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
65extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
66endif
67
68# Test self-contained headers
69
70# Wildcard searches in $(srctree)/$(src)/, but not in $(objtree)/$(obj)/.
71# Stale generated headers are often left over, so pattern matching should
72# be avoided. Please notice $(srctree)/$(src)/ and $(objtree)/$(obj) point
73# to the same location for in-tree building. So, header-test-pattern-y should
74# be used with care.
75header-test-y += $(filter-out $(header-test-), \
76 $(patsubst $(srctree)/$(src)/%, %, \
77 $(wildcard $(addprefix $(srctree)/$(src)/, \
78 $(header-test-pattern-y)))))
79
80extra-$(CONFIG_HEADER_TEST) += $(addsuffix .s, $(header-test-y) $(header-test-m))
81
76# Add subdir path
77
78extra-y := $(addprefix $(obj)/,$(extra-y))
82# Add subdir path
83
84extra-y := $(addprefix $(obj)/,$(extra-y))
79always-y := $(addprefix $(obj)/,$(always-y))
85always := $(addprefix $(obj)/,$(always))
80targets := $(addprefix $(obj)/,$(targets))
81modorder := $(addprefix $(obj)/,$(modorder))
82obj-m := $(addprefix $(obj)/,$(obj-m))
83lib-y := $(addprefix $(obj)/,$(lib-y))
84subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
85real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
86real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
87multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
88subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
89
90# Finds the multi-part object the current object will be linked into.
86targets := $(addprefix $(obj)/,$(targets))
87modorder := $(addprefix $(obj)/,$(modorder))
88obj-m := $(addprefix $(obj)/,$(obj-m))
89lib-y := $(addprefix $(obj)/,$(lib-y))
90subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
91real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
92real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
93multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
94subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
95
96# Finds the multi-part object the current object will be linked into.
91# If the object belongs to two or more multi-part objects, list them all.
92modname-multi = $(sort $(foreach m,$(multi-used),\
93 $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))
97# If the object belongs to two or more multi-part objects, all of them are
98# concatenated with a colon separator.
99modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\
100 $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=)))))
94
101
95__modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
102modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
96
103
97modname = $(subst $(space),:,$(__modname))
98modfile = $(addprefix $(obj)/,$(__modname))
99
100# target with $(obj)/ and its suffix stripped
101target-stem = $(basename $(patsubst $(obj)/%,%,$@))
102
103# These flags are needed for modversions and compiling, so we define them here
104# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
105# end up in (or would, if it gets compiled in)
104# target with $(obj)/ and its suffix stripped
105target-stem = $(basename $(patsubst $(obj)/%,%,$@))
106
107# These flags are needed for modversions and compiling, so we define them here
108# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
109# end up in (or would, if it gets compiled in)
106name-fix = $(call stringify,$(subst $(comma),_,$(subst -,_,$1)))
110name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
107basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
108modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname))
111basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
112modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname))
109modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile))
110
111orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
112 $(ccflags-y) $(CFLAGS_$(target-stem).o)
113_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), $(orig_c_flags))
114orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
115 $(asflags-y) $(AFLAGS_$(target-stem).o)
116_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), $(orig_a_flags))
117_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)

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144endif
145
146ifeq ($(CONFIG_KCOV),y)
147_c_flags += $(if $(patsubst n%,, \
148 $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
149 $(CFLAGS_KCOV))
150endif
151
113
114orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
115 $(ccflags-y) $(CFLAGS_$(target-stem).o)
116_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), $(orig_c_flags))
117orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
118 $(asflags-y) $(AFLAGS_$(target-stem).o)
119_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), $(orig_a_flags))
120_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)

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147endif
148
149ifeq ($(CONFIG_KCOV),y)
150_c_flags += $(if $(patsubst n%,, \
151 $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
152 $(CFLAGS_KCOV))
153endif
154
155#
156# Enable KCSAN flags except some files or directories we don't want to check
157# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE)
158#
159ifeq ($(CONFIG_KCSAN),y)
160_c_flags += $(if $(patsubst n%,, \
161 $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \
162 $(CFLAGS_KCSAN))
163endif
164
152# $(srctree)/$(src) for including checkin headers from generated source files
153# $(objtree)/$(obj) for including generated headers from checkin source files
154ifeq ($(KBUILD_EXTMOD),)
155ifdef building_out_of_srctree
156_c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
157_a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
158_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
159endif
160endif
161
162part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)
163quiet_modtag = $(if $(part-of-module),[M], )
164
165modkern_cflags = \
166 $(if $(part-of-module), \
167 $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
165# $(srctree)/$(src) for including checkin headers from generated source files
166# $(objtree)/$(obj) for including generated headers from checkin source files
167ifeq ($(KBUILD_EXTMOD),)
168ifdef building_out_of_srctree
169_c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
170_a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
171_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
172endif
173endif
174
175part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)
176quiet_modtag = $(if $(part-of-module),[M], )
177
178modkern_cflags = \
179 $(if $(part-of-module), \
180 $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
168 $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags))
181 $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
169
170modkern_aflags = $(if $(part-of-module), \
171 $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \
172 $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
173
174c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
175 -include $(srctree)/include/linux/compiler_types.h \
176 $(_c_flags) $(modkern_cflags) \

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295$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
296 $(call if_changed_dep,dtc,dtb)
297
298DT_CHECKER ?= dt-validate
299DT_BINDING_DIR := Documentation/devicetree/bindings
300DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
301
302quiet_cmd_dtb_check = CHECK $@
182
183modkern_aflags = $(if $(part-of-module), \
184 $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \
185 $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
186
187c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
188 -include $(srctree)/include/linux/compiler_types.h \
189 $(_c_flags) $(modkern_cflags) \

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308$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
309 $(call if_changed_dep,dtc,dtb)
310
311DT_CHECKER ?= dt-validate
312DT_BINDING_DIR := Documentation/devicetree/bindings
313DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
314
315quiet_cmd_dtb_check = CHECK $@
303 cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
316 cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ ;
304
317
305define rule_dtc
318define rule_dtc_dt_yaml
306 $(call cmd_and_fixdep,dtc,yaml)
307 $(call cmd,dtb_check)
308endef
309
310$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
319 $(call cmd_and_fixdep,dtc,yaml)
320 $(call cmd,dtb_check)
321endef
322
323$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
311 $(call if_changed_rule,dtc)
324 $(call if_changed_rule,dtc_dt_yaml)
312
313dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
314
315# Bzip2
316# ---------------------------------------------------------------------------
317
318# Bzip2 and LZMA do not include size in file... so we have to fake that;
319# append the size as a 32-bit littleendian number as gzip does.

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326dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
327
328# Bzip2
329# ---------------------------------------------------------------------------
330
331# Bzip2 and LZMA do not include size in file... so we have to fake that;
332# append the size as a 32-bit littleendian number as gzip does.

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