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 53CHECK ?= sparse 54 55.PHONY: FORCE 56.PHONY: FORCE-GENSRC$(sm) 57FORCE: 58FORCE-GENSRC$(sm): 59 60 61define process_srcs 62objs += $2 63comp-dep-$2 := $$(dir $2).$$(notdir $2).d 64comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 65comp-sm-$2 := $(sm) 66comp-lib-$2 := $(libname)-$(sm) 67 68cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 69 70ifeq ($$(filter %.c,$1),$1) 71comp-q-$2 := CC 72comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 73 $$(cflags-remove-$$(comp-sm-$2)) \ 74 $$(cflags-remove-$2), \ 75 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS_WARNS) \ 76 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 77 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 78ifeq ($C,1) 79check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 80echo-check-$2 := $(cmd-echo-silent) 81echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 82endif 83 84else ifeq ($$(filter %.S,$1),$1) 85comp-q-$2 := AS 86comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 87 $$(aflags-remove-$$(comp-sm-$2)) \ 88 $$(aflags-remove-$2), \ 89 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 90 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 91 92else 93$$(error "Don't know what to do with $1") 94endif 95 96comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 97 $$(cppflags-remove-$$(comp-sm-$2)) \ 98 $$(cppflags-remove-$2), \ 99 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 100 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 101 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 102 $$(addprefix -I,$$(incdirs-$2)) \ 103 $$(cppflags$$(comp-sm-$2)) \ 104 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 105 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$1))) 106 107comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 108comp-flags-$2 += $$(comp-cppflags-$2) 109 110comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 111comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 112 --rename-section .rodata=.rodata.$1 \ 113 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 114 $2 115 116# Assign defaults if unassigned 117echo-check-$2 ?= true 118echo-check-cmd-$2 ?= true 119check-cmd-$2 ?= true 120 121-include $$(comp-cmd-file-$2) 122-include $$(comp-dep-$2) 123 124 125$2: $1 FORCE-GENSRC$(sm) 126# Check if any prerequisites are newer than the target and 127# check if command line has changed 128 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 129 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 130 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 131 @set -e ;\ 132 mkdir -p $$(dir $2) ;\ 133 $$(echo-check-$2) ' CHECK $$<' ;\ 134 $$(echo-check-cmd-$2) ;\ 135 $$(check-cmd-$2) ;\ 136 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 137 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 138 $$(comp-cmd-$2) ;\ 139 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 140 $$(comp-objcpy-cmd-$2) ;\ 141 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 142 $$(comp-cmd-file-$2) ;\ 143 ) 144 145endef 146 147$(foreach f, $(srcs), $(eval $(call \ 148 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 149 150# Handle generated source files, that is, files that are compiled from out-dir 151$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 152 153# Handle specified source files, that is, files that have a specified path 154# but where the object file should go into a specified out directory 155$(foreach f, $(spec-srcs), $(eval $(call \ 156 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 157 158$(objs): $(conf-file) $(additional-compile-deps) 159 160define _gen-asm-defines-file 161# c-filename in $1 162# h-filename in $2 163# s-filename in $3 164 165FORCE-GENSRC$(sm): $(2) 166 167comp-dep-$3 := $$(dir $3)$$(notdir $3).d 168comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 169comp-sm-$3 := $(sm) 170 171cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 172 173comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 174 $$(cflags-remove-$$(comp-sm-$3)) \ 175 $$(cflags-remove-$3), \ 176 $$(CFLAGS) $$(CFLAGS_WARNS) \ 177 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 178 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 179 180comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 181 $$(cppflags-remove-$$(comp-sm-$3)) \ 182 $$(cppflags-remove-$3), \ 183 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 184 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 185 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 186 $$(addprefix -I,$$(incdirs-$3)) \ 187 $$(cppflags$$(comp-sm-$3)) \ 188 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 189 190comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 191comp-flags-$3 += $$(comp-cppflags-$3) 192 193comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 194 195 196-include $$(comp-cmd-file-$3) 197-include $$(comp-dep-$3) 198 199$3: $1 $(conf-file) FORCE 200# Check if any prerequisites are newer than the target and 201# check if command line has changed 202 $$(if $$(strip $$(filter-out FORCE, $$?) \ 203 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 204 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 205 @set -e ;\ 206 mkdir -p $$(dir $2) $$(dir $3) ;\ 207 $(cmd-echo-silent) ' CC $$@'; \ 208 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 209 $$(comp-cmd-$3) ;\ 210 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 211 $$(comp-cmd-file-$3) ;\ 212 ) 213 214guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$2))) 215 216$(2): $(3) 217 $(q)set -e; \ 218 $(cmd-echo-silent) ' CHK $$@'; \ 219 mkdir -p $$(dir $$@); \ 220 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 221 echo "#define $$(guard-$2)" >>$$@.tmp; \ 222 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 223 < $$< >>$$@.tmp; \ 224 echo "#endif" >>$$@.tmp; \ 225 $$(call mv-if-changed,$$@.tmp,$$@) 226 227endef 228 229define gen-asm-defines-file 230$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s))) 231endef 232 233$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 234 235# Device tree source file compilation 236DTC := dtc 237DTC_FLAGS += -I dts -O dtb 238DTC_FLAGS += -Wno-unit_address_vs_reg 239 240define gen-dtb-file 241# dts file path/name in $1 242# dtb file path/name in $2 243 244dtb-basename-$2 := $$(basename $$(notdir $2)) 245dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 246dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 247dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 248dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 249 250cleanfiles := $$(cleanfiles) $2 \ 251 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 252 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 253 254dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp \ 255 -E -ffreestanding $$(CPPFLAGS) \ 256 -MD -MF $$(dtb-predep-$2) -MT $2 257 258dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 259 260-include $$(dtb-dep-$2) 261-include $$(dtb-predep-$2) 262-include $$(dtb-cmd-file-$2) 263 264dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 265dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 266 267$2: $1 FORCE 268# Check if any prerequisites are newer than the target and 269# check if command line has changed 270 $$(if $$(strip $$(filter-out FORCE, $$?) \ 271 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 272 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2)) \ 273 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 274 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 275 @set -e; \ 276 mkdir -p $$(dir $2); \ 277 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 278 $$(dtb-precmd-$2); \ 279 $(cmd-echo-silent) ' DTC $$@'; \ 280 $$(dtb-cmd-$2); \ 281 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 282 $$(dtb-cmd-file-$2) ;\ 283 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 284 $$(dtb-cmd-file-$2) ;\ 285 ) 286 287endef 288 289additional-compile-deps := 290