^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) # ==========================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) # Building
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) # ==========================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) src := $(obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) PHONY := __build
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) __build:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) # Init all relevant variables used in kbuild files so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) # 1) they have correct type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) # 2) they do not inherit any value from the environment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) obj-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) obj-m :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) lib-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) lib-m :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) always :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) always-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) always-m :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) targets :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) subdir-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) subdir-m :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) EXTRA_AFLAGS :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) EXTRA_CFLAGS :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) EXTRA_CPPFLAGS :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) EXTRA_LDFLAGS :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) asflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ccflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) cppflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ldflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) subdir-asflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) subdir-ccflags-y :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) # Read auto.conf if it exists, otherwise ignore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) -include include/config/auto.conf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) include scripts/Kbuild.include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) # The filename Kbuild has precedence over Makefile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) include $(kbuild-file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) include scripts/Makefile.lib
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) # Do not include hostprogs rules unless needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) # $(sort ...) is used here to remove duplicated words and excessive spaces.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) hostprogs := $(sort $(hostprogs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ifneq ($(hostprogs),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) include scripts/Makefile.host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) # Do not include userprogs rules unless needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) # $(sort ...) is used here to remove duplicated words and excessive spaces.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) userprogs := $(sort $(userprogs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ifneq ($(userprogs),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) include scripts/Makefile.userprogs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) ifndef obj
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) $(warning kbuild: Makefile.build is included improperly)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ifeq ($(need-modorder),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ifneq ($(obj-m),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) $(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) $(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) # ===========================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) # subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) targets-for-builtin := $(extra-y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) targets-for-builtin += $(obj)/lib.a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ifdef need-builtin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) targets-for-builtin += $(obj)/built-in.a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) targets-for-modules := $(patsubst %.o, %.mod, $(filter %.o, $(obj-m)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ifdef need-modorder
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) targets-for-modules += $(obj)/modules.order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) targets += $(targets-for-builtin) $(targets-for-modules)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) # Linus' kernel sanity checking tool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ifeq ($(KBUILD_CHECKSRC),1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) quiet_cmd_checksrc = CHECK $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) cmd_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) else ifeq ($(KBUILD_CHECKSRC),2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) quiet_cmd_force_checksrc = CHECK $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ifneq ($(KBUILD_EXTRA_WARN),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) # Compile C sources (.c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) cmd_cc_s_c = $(CC) -fverbose-asm $(filter-out $(DEBUG_CFLAGS) $(CC_FLAGS_LTO), $(c_flags)) -S -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) $(obj)/%.s: $(src)/%.c FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) $(call if_changed_dep,cc_s_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) quiet_cmd_cpp_i_c = CPP $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) cmd_cpp_i_c = $(CPP) $(c_flags) -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) $(obj)/%.i: $(src)/%.c FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) $(call if_changed_dep,cpp_i_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) # These mirror gensymtypes_S and co below, keep them in synch.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) cmd_gensymtypes_c = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) $(CPP) -D__GENKSYMS__ $(c_flags) $< | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) scripts/genksyms/genksyms $(if $(1), -T $(2)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) $(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) $(if $(KBUILD_PRESERVE),-p) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) cmd_cc_symtypes_c = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) $(call cmd_gensymtypes_c,true,$@) >/dev/null; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) test -s $@ || rm -f $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) $(obj)/%.symtypes : $(src)/%.c FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) $(call cmd,cc_symtypes_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) # LLVM assembly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) # Generate .ll files from .c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) quiet_cmd_cc_ll_c = CC $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) cmd_cc_ll_c = $(CC) $(c_flags) -emit-llvm -S -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) $(obj)/%.ll: $(src)/%.c FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) $(call if_changed_dep,cc_ll_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) # C (.c) files
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) # The C file is compiled and updated dependency information is generated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) # (See cmd_cc_o_c + relevant part of rule_cc_o_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) quiet_cmd_cc_o_c = CC $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ifdef CONFIG_MODVERSIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) # When module versioning is enabled the following steps are executed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) # o compile a <file>.o from <file>.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) # o if <file>.o doesn't contain a __ksymtab version, i.e. does
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) # not export symbols, it's done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) # o otherwise, we calculate symbol versions using the good old
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) # genksyms on the preprocessed source and postprocess them in a way
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) # that they are usable as a linker script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) # o generate .tmp_<file>.o from <file>.o using the linker to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) # replace the unresolved symbols __crc_exported_symbol with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) # the actual value of the checksum generated by genksyms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) # o remove .tmp_<file>.o to <file>.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ifdef CONFIG_LTO_CLANG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) # Generate .o.symversions files for each .o with exported symbols, and link these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) # to the kernel and/or modules at the end.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) cmd_modversions_c = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if $(NM) $@ 2>/dev/null | grep -q __ksymtab; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) > $@.symversions; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) fi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) cmd_modversions_c = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if $(OBJDUMP) -h $@ | grep -q __ksymtab; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) > $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) $(LD) $(KBUILD_LDFLAGS) -r -o $(@D)/.tmp_$(@F) $@ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) -T $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) mv -f $(@D)/.tmp_$(@F) $@; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) rm -f $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) # compiler will not generate __mcount_loc use recordmcount or recordmcount.pl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ifdef BUILD_C_RECORDMCOUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) ifeq ("$(origin RECORDMCOUNT_WARN)", "command line")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) RECORDMCOUNT_FLAGS = -w
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) # Due to recursion, we must skip empty.o.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) # The empty.o file is created in the make process in order to determine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) # the target endianness and word size. It is made before all other C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) # files, including recordmcount.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) sub_cmd_record_mcount = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if [ $(@) != "scripts/mod/empty.o" ]; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) "$(@)"; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) fi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) recordmcount_source := $(srctree)/scripts/recordmcount.c \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) $(srctree)/scripts/recordmcount.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) sub_cmd_record_mcount = perl $(srctree)/scripts/recordmcount.pl "$(ARCH)" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) "$(if $(CONFIG_CPU_BIG_ENDIAN),big,little)" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) "$(if $(CONFIG_64BIT),64,32)" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS)" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) "$(LD) $(KBUILD_LDFLAGS)" "$(NM)" "$(RM)" "$(MV)" \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) "$(if $(part-of-module),1,0)" "$(@)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) recordmcount_source := $(srctree)/scripts/recordmcount.pl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) endif # BUILD_C_RECORDMCOUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) $(sub_cmd_record_mcount))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ifdef CONFIG_STACK_VALIDATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ifndef CONFIG_LTO_CLANG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) ifneq ($(SKIP_STACK_VALIDATION),1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) __objtool_obj := $(objtree)/tools/objtool/objtool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) cmd_objtool = $(if $(patsubst y%,, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) $(__objtool_obj) $(objtool_args) $@)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) objtool_obj = $(if $(patsubst y%,, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) $(__objtool_obj))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) endif # SKIP_STACK_VALIDATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) endif # CONFIG_LTO_CLANG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) endif # CONFIG_STACK_VALIDATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) # Rebuild all objects when objtool changes, or is enabled/disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) objtool_dep = $(objtool_obj) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) $(wildcard include/config/orc/unwinder.h \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) include/config/stack/validation.h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) ifdef CONFIG_TRIM_UNUSED_KSYMS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) cmd_gen_ksymdeps = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) $(CONFIG_SHELL) $(srctree)/scripts/gen_ksymdeps.sh $@ >> $(dot-target).cmd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) # List module undefined symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) undefined_syms = $(NM) $< | $(AWK) '$$1 == "U" { printf("%s%s", x++ ? " " : "", $$2) }';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) define rule_cc_o_c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) $(call cmd_and_fixdep,cc_o_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) $(call cmd,gen_ksymdeps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) $(call cmd,checksrc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) $(call cmd,checkdoc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) $(call cmd,objtool)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) $(call cmd,modversions_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) $(call cmd,record_mcount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) endef
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) define rule_as_o_S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) $(call cmd_and_fixdep,as_o_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) $(call cmd,gen_ksymdeps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) $(call cmd,objtool)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) $(call cmd,modversions_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) endef
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) # Built-in and composite module parts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) .SECONDEXPANSION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) $(obj)/%.o: $(src)/%.c $(recordmcount_source) $$(objtool_dep) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) $(call if_changed_rule,cc_o_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) $(call cmd,force_checksrc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) cmd_mod = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) echo $(if $($*-objs)$($*-y)$($*-m), $(addprefix $(obj)/, $($*-objs) $($*-y) $($*-m)), $(@:.mod=.o)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) $(undefined_syms) echo; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) } > $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) $(obj)/%.mod: $(obj)/%.o FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) $(call if_changed,mod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) quiet_cmd_cc_lst_c = MKLST $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) System.map $(OBJDUMP) > $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) $(obj)/%.lst: $(src)/%.c FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) $(call if_changed_dep,cc_lst_c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) # Compile assembler sources (.S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) # .S file exports must have their C prototypes defined in asm/asm-prototypes.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) # or a file that it includes, in order to get versioned symbols. We build a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) # dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) # the .S file (with trailing ';'), and run genksyms on that, to extract vers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) # This is convoluted. The .S file must first be preprocessed to run guards and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) # expand names, then the resulting exports must be constructed into plain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) # EXPORT_SYMBOL(symbol); to build our dummy C file, and that gets preprocessed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) # to make the genksyms input.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) # These mirror gensymtypes_c and co above, keep them in synch.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) cmd_gensymtypes_S = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) { echo "\#include <linux/kernel.h>" ; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) echo "\#include <asm/asm-prototypes.h>" ; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) $(CPP) $(a_flags) $< | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) grep "\<___EXPORT_SYMBOL\>" | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ; } | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) scripts/genksyms/genksyms $(if $(1), -T $(2)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) $(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) $(if $(KBUILD_PRESERVE),-p) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) cmd_cc_symtypes_S = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) $(call cmd_gensymtypes_S,true,$@) >/dev/null; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) test -s $@ || rm -f $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) $(obj)/%.symtypes : $(src)/%.S FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) $(call cmd,cc_symtypes_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) cmd_cpp_s_S = $(CPP) $(a_flags) -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) $(obj)/%.s: $(src)/%.S FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) $(call if_changed_dep,cpp_s_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) quiet_cmd_as_o_S = AS $(quiet_modtag) $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) ifdef CONFIG_ASM_MODVERSIONS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) # versioning matches the C process described above, with difference that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) # we parse asm-prototypes.h C header to get function definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) cmd_modversions_S = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if $(OBJDUMP) -h $@ | grep -q __ksymtab; then \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) $(call cmd_gensymtypes_S,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) > $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) $(LD) $(KBUILD_LDFLAGS) -r -o $(@D)/.tmp_$(@F) $@ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) -T $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) mv -f $(@D)/.tmp_$(@F) $@; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) rm -f $(@D)/.tmp_$(@F:.o=.ver); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) $(obj)/%.o: $(src)/%.S $$(objtool_dep) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) $(call if_changed_rule,as_o_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) targets += $(filter-out $(subdir-builtin), $(real-obj-y))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) targets += $(filter-out $(subdir-modorder), $(real-obj-m))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) targets += $(lib-y) $(always-y) $(MAKECMDGOALS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) # Linker scripts preprocessor (.lds.S -> .lds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) quiet_cmd_cpp_lds_S = LDS $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -U$(ARCH) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) $(obj)/%.lds: $(src)/%.lds.S FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) $(call if_changed_dep,cpp_lds_S)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) # ASN.1 grammar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) quiet_cmd_asn1_compiler = ASN.1 $(basename $@).[ch]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) $(basename $@).c $(basename $@).h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) $(call cmd,asn1_compiler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) # Build the compiled-in targets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) # To build objects in subdirs, we need to descend into the directories
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) $(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) # combine symversions for later processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) quiet_cmd_update_lto_symversions = SYMVER $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) ifeq ($(CONFIG_LTO_CLANG) $(CONFIG_MODVERSIONS),y y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) cmd_update_lto_symversions = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) rm -f $@.symversions \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) $(foreach n, $(filter-out FORCE,$^), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) $(if $(wildcard $(n).symversions), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ; cat $(n).symversions >> $@.symversions))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) cmd_update_lto_symversions = echo >/dev/null
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) # Rule to compile a set of .o files into one .a file (without symbol table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) quiet_cmd_ar_builtin = AR $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) cmd_ar_builtin = rm -f $@; $(AR) cDPrST $@ $(real-prereqs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) quiet_cmd_ar_and_symver = AR $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) cmd_ar_and_symver = $(cmd_update_lto_symversions); $(cmd_ar_builtin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) $(obj)/built-in.a: $(real-obj-y) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) $(call if_changed,ar_and_symver)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) # Rule to create modules.order file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) # Create commands to either record .ko file or cat modules.order from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) # a subdirectory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) # Add $(obj-m) as the prerequisite to avoid updating the timestamp of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) # modules.order unless contained modules are updated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) cmd_modules_order = { $(foreach m, $(real-prereqs), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) $(if $(filter %/modules.order, $m), cat $m, echo $(patsubst %.o,%.ko,$m));) :; } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) | $(AWK) '!x[$$0]++' - > $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) $(obj)/modules.order: $(obj-m) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) $(call if_changed,modules_order)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) # Rule to compile a set of .o files into one .a file (with symbol table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) quiet_cmd_ar_lib = AR $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) cmd_ar_lib = $(cmd_update_lto_symversions); $(cmd_ar)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) $(obj)/lib.a: $(lib-y) FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) $(call if_changed,ar_lib)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) # NOTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) # Do not replace $(filter %.o,^) with $(real-prereqs). When a single object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) # module is turned into a multi object module, $^ will contain header file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) # dependencies recorded in the .*.cmd file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ifdef CONFIG_LTO_CLANG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) quiet_cmd_link_multi-m = AR [M] $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) cmd_link_multi-m = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) $(cmd_update_lto_symversions); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) rm -f $@; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) $(AR) cDPrsT $@ $(filter %.o %.a,$^)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) quiet_cmd_link_multi-m = LD [M] $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) cmd_link_multi-m = $(LD) $(ld_flags) -r -o $@ $(filter %.o,$^)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) $(multi-used-m): FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) $(call if_changed,link_multi-m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) $(call multi_depend, $(multi-used-m), .o, -objs -y -m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) targets += $(multi-used-m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) targets := $(filter-out $(PHONY), $(targets))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) # Add intermediate targets:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) # When building objects with specific suffix patterns, add intermediate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) # targets that the final targets are derived from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) intermediate_targets = $(foreach sfx, $(2), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) $(patsubst %$(strip $(1)),%$(sfx), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) $(filter %$(strip $(1)), $(targets))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) # %.asn1.o <- %.asn1.[ch] <- %.asn1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) # %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) # %.lex.o <- %.lex.c <- %.l
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) # %.tab.o <- %.tab.[ch] <- %.y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) $(call intermediate_targets, .lex.o, .lex.c) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) $(call intermediate_targets, .tab.o, .tab.c .tab.h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) # Build
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ifdef single-build
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) KBUILD_SINGLE_TARGETS := $(filter $(obj)/%, $(KBUILD_SINGLE_TARGETS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) curdir-single := $(sort $(foreach x, $(KBUILD_SINGLE_TARGETS), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) $(if $(filter $(x) $(basename $(x)).o, $(targets)), $(x))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) # Handle single targets without any rule: show "Nothing to be done for ..." or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) # "No rule to make target ..." depending on whether the target exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) unknown-single := $(filter-out $(addsuffix /%, $(subdir-ym)), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) $(filter-out $(curdir-single), $(KBUILD_SINGLE_TARGETS)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) single-subdirs := $(foreach d, $(subdir-ym), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) __build: $(curdir-single) $(single-subdirs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ifneq ($(unknown-single),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) $(Q)$(MAKE) -f /dev/null $(unknown-single)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) @:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) ifeq ($(curdir-single),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) # Nothing to do in this directory. Do not include any .*.cmd file for speed-up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) targets :=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) targets += $(curdir-single)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) __build: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) $(if $(KBUILD_MODULES), $(targets-for-modules)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) $(subdir-ym) $(always-y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) @:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) # Descending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) PHONY += $(subdir-ym)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) $(subdir-ym):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) $(Q)$(MAKE) $(build)=$@ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) $(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) # Add FORCE to the prequisites of a target to force it to be always rebuilt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) # ---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) PHONY += FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) FORCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) # Read all saved command lines and dependencies for the $(targets) we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) # may be building above, using $(if_changed{,_dep}). As an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) # optimization, we don't need to read them if the target does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) # exist, we will rebuild anyway in that case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) existing-targets := $(wildcard $(sort $(targets)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) # Create directories for object files if they do not exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) obj-dirs := $(sort $(patsubst %/,%, $(dir $(targets))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) # If targets exist, their directories apparently exist. Skip mkdir.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) existing-dirs := $(sort $(patsubst %/,%, $(dir $(existing-targets))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) obj-dirs := $(strip $(filter-out $(existing-dirs), $(obj-dirs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ifneq ($(obj-dirs),)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) $(shell mkdir -p $(obj-dirs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) .PHONY: $(PHONY)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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