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 # one trailing space 73comp-compiler-$2 := $$(CC$(sm)) 74comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 75 $$(cflags-remove-$$(comp-sm-$2)) \ 76 $$(cflags-remove-$2), \ 77 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS_WARNS) \ 78 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 79 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 80ifeq ($C,1) 81check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 82echo-check-$2 := $(cmd-echo-silent) 83echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 84endif 85 86else ifeq ($$(filter %.S,$1),$1) 87comp-q-$2 := AS # one trailing space 88comp-compiler-$2 := $$(CC$(sm)) 89comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 90 $$(aflags-remove-$$(comp-sm-$2)) \ 91 $$(aflags-remove-$2), \ 92 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 93 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 94 95else ifeq ($$(filter %.cpp,$1),$1) 96comp-q-$2 := CXX 97comp-compiler-$2 := $$(CXX$(sm)) 98comp-flags-$2 = $$(filter-out $$(CXXFLAGS_REMOVE) $$(cxxflags-remove) \ 99 $$(cxxflags-remove-$$(comp-sm-$2)) \ 100 $$(cxxflags-remove-$2), \ 101 $$(CXXFLAGS) $$(comp-cxxflags$$(comp-sm-$2)) \ 102 $$(cxxflags$$(comp-sm-$2)) $$(cxxflags-$2)) 103 104else 105$$(error "Don't know what to do with $1") 106endif 107 108comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 109 $$(cppflags-remove-$$(comp-sm-$2)) \ 110 $$(cppflags-remove-$2), \ 111 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 112 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 113 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 114 $$(addprefix -I,$$(incdirs-$2)) \ 115 $$(cppflags$$(comp-sm-$2)) \ 116 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 117 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$1))) 118 119comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 120comp-flags-$2 += $$(comp-cppflags-$2) 121 122comp-cmd-$2 = $$(comp-compiler-$2) $$(comp-flags-$2) -c $$< -o $$@ 123comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 124 --rename-section .rodata=.rodata.$1 \ 125 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 126 $2 127 128# Assign defaults if unassigned 129echo-check-$2 ?= true 130echo-check-cmd-$2 ?= true 131check-cmd-$2 ?= true 132 133-include $$(comp-cmd-file-$2) 134-include $$(comp-dep-$2) 135 136 137$2: $1 FORCE-GENSRC$(sm) 138# Check if any prerequisites are newer than the target and 139# check if command line has changed 140 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 141 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 142 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 143 @set -e ;\ 144 mkdir -p $$(dir $2) ;\ 145 $$(echo-check-$2) ' CHECK $$<' ;\ 146 $$(echo-check-cmd-$2) ;\ 147 $$(check-cmd-$2) ;\ 148 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 149 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 150 $$(comp-cmd-$2) ;\ 151 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 152 $$(comp-objcpy-cmd-$2) ;\ 153 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 154 $$(comp-cmd-file-$2) ;\ 155 ) 156 157endef 158 159$(foreach f, $(srcs), $(eval $(call \ 160 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 161 162# Handle generated source files, that is, files that are compiled from out-dir 163$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 164 165# Handle specified source files, that is, files that have a specified path 166# but where the object file should go into a specified out directory 167$(foreach f, $(spec-srcs), $(eval $(call \ 168 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 169 170$(objs): $(conf-file) $(additional-compile-deps) 171 172define _gen-asm-defines-file 173# c-filename in $1 174# h-filename in $2 175# s-filename in $3 176 177FORCE-GENSRC$(sm): $(2) 178 179comp-dep-$3 := $$(dir $3)$$(notdir $3).d 180comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 181comp-sm-$3 := $(sm) 182 183cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 184 185comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 186 $$(cflags-remove-$$(comp-sm-$3)) \ 187 $$(cflags-remove-$3), \ 188 $$(CFLAGS) $$(CFLAGS_WARNS) \ 189 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 190 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 191 192comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 193 $$(cppflags-remove-$$(comp-sm-$3)) \ 194 $$(cppflags-remove-$3), \ 195 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 196 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 197 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 198 $$(addprefix -I,$$(incdirs-$3)) \ 199 $$(cppflags$$(comp-sm-$3)) \ 200 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 201 202comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 203comp-flags-$3 += $$(comp-cppflags-$3) 204 205comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 206 207 208-include $$(comp-cmd-file-$3) 209-include $$(comp-dep-$3) 210 211$3: $1 $(conf-file) FORCE 212# Check if any prerequisites are newer than the target and 213# check if command line has changed 214 $$(if $$(strip $$(filter-out FORCE, $$?) \ 215 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 216 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 217 @set -e ;\ 218 mkdir -p $$(dir $2) $$(dir $3) ;\ 219 $(cmd-echo-silent) ' CC $$@'; \ 220 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 221 $$(comp-cmd-$3) ;\ 222 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 223 $$(comp-cmd-file-$3) ;\ 224 ) 225 226guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$$(subst +,_,$2)))) 227 228$(2): $(3) 229 $(q)set -e; \ 230 $(cmd-echo-silent) ' CHK $$@'; \ 231 mkdir -p $$(dir $$@); \ 232 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 233 echo "#define $$(guard-$2)" >>$$@.tmp; \ 234 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 235 < $$< >>$$@.tmp; \ 236 echo "#endif" >>$$@.tmp; \ 237 $$(call mv-if-changed,$$@.tmp,$$@) 238 239endef 240 241define gen-asm-defines-file 242$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s))) 243endef 244 245$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 246 247# Device tree source file compilation 248DTC := dtc 249DTC_FLAGS += -I dts -O dtb 250DTC_FLAGS += -Wno-unit_address_vs_reg 251 252define gen-dtb-file 253# dts file path/name in $1 254# dtb file path/name in $2 255 256dtb-basename-$2 := $$(basename $$(notdir $2)) 257dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 258dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 259dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 260dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 261 262cleanfiles := $$(cleanfiles) $2 \ 263 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 264 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 265 266dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp \ 267 -E -ffreestanding $$(CPPFLAGS) \ 268 -MD -MF $$(dtb-predep-$2) -MT $2 269 270dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 271 272-include $$(dtb-dep-$2) 273-include $$(dtb-predep-$2) 274-include $$(dtb-cmd-file-$2) 275 276dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 277dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 278 279$2: $1 FORCE 280# Check if any prerequisites are newer than the target and 281# check if command line has changed 282 $$(if $$(strip $$(filter-out FORCE, $$?) \ 283 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 284 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2)) \ 285 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 286 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 287 @set -e; \ 288 mkdir -p $$(dir $2); \ 289 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 290 $$(dtb-precmd-$2); \ 291 $(cmd-echo-silent) ' DTC $$@'; \ 292 $$(dtb-cmd-$2); \ 293 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 294 $$(dtb-cmd-file-$2) ;\ 295 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 296 $$(dtb-cmd-file-$2) ;\ 297 ) 298 299endef 300 301additional-compile-deps := 302