1# Input 2# 3# The output from mk/sub.mk 4# base-prefix 5# conf-file [optional] if set, all objects will depend on $(conf-file) 6# additional-compile-deps [optional] additional dependencies 7# 8# Output 9# 10# set objs 11# update cleanfiles 12# 13# Generates explicit rules for all objs 14 15objs := 16 17# Disable all builtin rules 18.SUFFIXES: 19 20comp-cflags$(sm) = -std=gnu99 21comp-aflags$(sm) = 22comp-cppflags$(sm) = 23 24ifeq ($(CFG_WERROR),y) 25comp-cflags$(sm) += -Werror 26endif 27comp-cflags$(sm) += -fdiagnostics-show-option 28 29comp-cflags-warns-high = \ 30 -Wall -Wcast-align \ 31 -Werror-implicit-function-declaration -Wextra -Wfloat-equal \ 32 -Wformat-nonliteral -Wformat-security -Wformat=2 -Winit-self \ 33 -Wmissing-declarations -Wmissing-format-attribute \ 34 -Wmissing-include-dirs -Wmissing-noreturn \ 35 -Wmissing-prototypes -Wnested-externs -Wpointer-arith \ 36 -Wshadow -Wstrict-prototypes -Wswitch-default \ 37 -Wwrite-strings \ 38 -Wno-missing-field-initializers -Wno-format-zero-length 39comp-cflags-warns-medium = \ 40 -Waggregate-return -Wredundant-decls 41comp-cflags-warns-low = \ 42 -Wold-style-definition -Wstrict-aliasing=2 \ 43 -Wundef 44 45comp-cflags-warns-1:= $(comp-cflags-warns-high) 46comp-cflags-warns-2:= $(comp-cflags-warns-1) $(comp-cflags-warns-medium) 47comp-cflags-warns-3:= $(comp-cflags-warns-2) $(comp-cflags-warns-low) 48 49WARNS ?= 3 50 51comp-cflags$(sm) += $(comp-cflags-warns-$(WARNS)) \ 52 $(comp-cflags-warns-$(COMPILER_$(sm))) 53 54CHECK ?= sparse 55 56.PHONY: FORCE 57.PHONY: FORCE-GENSRC$(sm) 58FORCE: 59FORCE-GENSRC$(sm): 60 61 62define process_srcs 63objs += $2 64comp-dep-$2 := $$(dir $2).$$(notdir $2).d 65comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 66comp-sm-$2 := $(sm) 67comp-lib-$2 := $(libname)-$(sm) 68 69cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 70 71ifeq ($$(filter %.c,$1),$1) 72comp-q-$2 := CC 73comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 74 $$(cflags-remove-$$(comp-sm-$2)) \ 75 $$(cflags-remove-$2), \ 76 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS_WARNS) \ 77 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 78 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 79ifeq ($C,1) 80check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 81echo-check-$2 := $(cmd-echo-silent) 82echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 83endif 84 85else ifeq ($$(filter %.S,$1),$1) 86comp-q-$2 := AS 87comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 88 $$(aflags-remove-$$(comp-sm-$2)) \ 89 $$(aflags-remove-$2), \ 90 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 91 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 92 93else 94$$(error "Don't know what to do with $1") 95endif 96 97comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 98 $$(cppflags-remove-$$(comp-sm-$2)) \ 99 $$(cppflags-remove-$2), \ 100 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 101 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 102 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 103 $$(addprefix -I,$$(incdirs-$2)) \ 104 $$(cppflags$$(comp-sm-$2)) \ 105 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 106 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$1))) 107 108comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 109comp-flags-$2 += $$(comp-cppflags-$2) 110 111comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 112comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 113 --rename-section .rodata=.rodata.$1 \ 114 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 115 $2 116 117# Assign defaults if unassigned 118echo-check-$2 ?= true 119echo-check-cmd-$2 ?= true 120check-cmd-$2 ?= true 121 122-include $$(comp-cmd-file-$2) 123-include $$(comp-dep-$2) 124 125 126$2: $1 FORCE-GENSRC$(sm) 127# Check if any prerequisites are newer than the target and 128# check if command line has changed 129 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 130 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 131 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 132 @set -e ;\ 133 mkdir -p $$(dir $2) ;\ 134 $$(echo-check-$2) ' CHECK $$<' ;\ 135 $$(echo-check-cmd-$2) ;\ 136 $$(check-cmd-$2) ;\ 137 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 138 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 139 $$(comp-cmd-$2) ;\ 140 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 141 $$(comp-objcpy-cmd-$2) ;\ 142 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 143 $$(comp-cmd-file-$2) ;\ 144 ) 145 146endef 147 148$(foreach f, $(srcs), $(eval $(call \ 149 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 150 151# Handle generated source files, that is, files that are compiled from out-dir 152$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 153 154# Handle specified source files, that is, files that have a specified path 155# but where the object file should go into a specified out directory 156$(foreach f, $(spec-srcs), $(eval $(call \ 157 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 158 159$(objs): $(conf-file) $(additional-compile-deps) 160 161define _gen-asm-defines-file 162# c-filename in $1 163# h-filename in $2 164# s-filename in $3 165 166FORCE-GENSRC$(sm): $(2) 167 168comp-dep-$3 := $$(dir $3)$$(notdir $3).d 169comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 170comp-sm-$3 := $(sm) 171 172cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 173 174comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 175 $$(cflags-remove-$$(comp-sm-$3)) \ 176 $$(cflags-remove-$3), \ 177 $$(CFLAGS) $$(CFLAGS_WARNS) \ 178 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 179 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 180 181comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 182 $$(cppflags-remove-$$(comp-sm-$3)) \ 183 $$(cppflags-remove-$3), \ 184 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 185 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 186 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 187 $$(addprefix -I,$$(incdirs-$3)) \ 188 $$(cppflags$$(comp-sm-$3)) \ 189 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 190 191comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 192comp-flags-$3 += $$(comp-cppflags-$3) 193 194comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 195 196 197-include $$(comp-cmd-file-$3) 198-include $$(comp-dep-$3) 199 200$3: $1 $(conf-file) FORCE 201# Check if any prerequisites are newer than the target and 202# check if command line has changed 203 $$(if $$(strip $$(filter-out FORCE, $$?) \ 204 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 205 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 206 @set -e ;\ 207 mkdir -p $$(dir $2) $$(dir $3) ;\ 208 $(cmd-echo-silent) ' CC $$@'; \ 209 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 210 $$(comp-cmd-$3) ;\ 211 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 212 $$(comp-cmd-file-$3) ;\ 213 ) 214 215guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$2))) 216 217$(2): $(3) 218 $(q)set -e; \ 219 $(cmd-echo-silent) ' CHK $$@'; \ 220 mkdir -p $$(dir $$@); \ 221 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 222 echo "#define $$(guard-$2)" >>$$@.tmp; \ 223 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 224 < $$< >>$$@.tmp; \ 225 echo "#endif" >>$$@.tmp; \ 226 $$(call mv-if-changed,$$@.tmp,$$@) 227 228endef 229 230define gen-asm-defines-file 231$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s))) 232endef 233 234$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 235 236# Device tree source file compilation 237DTC := dtc 238DTC_FLAGS += -I dts -O dtb 239DTC_FLAGS += -Wno-unit_address_vs_reg 240 241define gen-dtb-file 242# dts file path/name in $1 243# dtb file path/name in $2 244 245dtb-basename-$2 := $$(basename $$(notdir $2)) 246dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 247dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 248dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 249dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 250 251cleanfiles := $$(cleanfiles) $2 \ 252 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 253 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 254 255dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp \ 256 -E -ffreestanding $$(CPPFLAGS) \ 257 -MD -MF $$(dtb-predep-$2) -MT $2 258 259dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 260 261-include $$(dtb-dep-$2) 262-include $$(dtb-predep-$2) 263-include $$(dtb-cmd-file-$2) 264 265dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 266dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 267 268$2: $1 FORCE 269# Check if any prerequisites are newer than the target and 270# check if command line has changed 271 $$(if $$(strip $$(filter-out FORCE, $$?) \ 272 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 273 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2)) \ 274 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 275 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 276 @set -e; \ 277 mkdir -p $$(dir $2); \ 278 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 279 $$(dtb-precmd-$2); \ 280 $(cmd-echo-silent) ' DTC $$@'; \ 281 $$(dtb-cmd-$2); \ 282 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 283 $$(dtb-cmd-file-$2) ;\ 284 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 285 $$(dtb-cmd-file-$2) ;\ 286 ) 287 288endef 289 290additional-compile-deps := 291