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 -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 $$(basename $f)).o))) 169 170$(objs): $(conf-file) $(additional-compile-deps) 171 172define _gen-asm-defines-file 173# c-filename in $1 174# h-filename in $2 175# s-filename in $3 176# Dependencies in $4 177 178FORCE-GENSRC$(sm): $(2) 179 180comp-dep-$3 := $$(dir $3)$$(notdir $3).d 181comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 182comp-sm-$3 := $(sm) 183 184cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 185 186comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 187 $$(cflags-remove-$$(comp-sm-$3)) \ 188 $$(cflags-remove-$3), \ 189 $$(CFLAGS) $$(CFLAGS_WARNS) \ 190 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 191 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 192 193comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 194 $$(cppflags-remove-$$(comp-sm-$3)) \ 195 $$(cppflags-remove-$3), \ 196 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 197 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 198 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 199 $$(addprefix -I,$$(incdirs-$3)) \ 200 $$(cppflags$$(comp-sm-$3)) \ 201 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 202 203comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 204comp-flags-$3 += $$(comp-cppflags-$3) 205 206comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 207 208 209-include $$(comp-cmd-file-$3) 210-include $$(comp-dep-$3) 211 212$3: $1 $(conf-file) $(4) FORCE 213# Check if any prerequisites are newer than the target and 214# check if command line has changed 215 $$(if $$(strip $$(filter-out FORCE, $$?) \ 216 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 217 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 218 @set -e ;\ 219 mkdir -p $$(dir $2) $$(dir $3) ;\ 220 $(cmd-echo-silent) ' CC $$@'; \ 221 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 222 $$(comp-cmd-$3) ;\ 223 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 224 $$(comp-cmd-file-$3) ;\ 225 ) 226 227guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$$(subst +,_,$2)))) 228 229$(2): $(3) 230 $(q)set -e; \ 231 $(cmd-echo-silent) ' CHK $$@'; \ 232 mkdir -p $$(dir $$@); \ 233 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 234 echo "#define $$(guard-$2)" >>$$@.tmp; \ 235 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 236 < $$< >>$$@.tmp; \ 237 echo "#endif" >>$$@.tmp; \ 238 $$(call mv-if-changed,$$@.tmp,$$@) 239 240endef 241 242define gen-asm-defines-file 243$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s)),$(asm-defines-$(notdir $(1))-deps)) 244endef 245 246$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 247 248# Device tree source file compilation 249DTC := dtc 250DTC_FLAGS += -I dts -O dtb 251DTC_FLAGS += -Wno-unit_address_vs_reg 252 253define gen-dtb-file 254# dts file path/name in $1 255# dtb file path/name in $2 256 257dtb-basename-$2 := $$(basename $$(notdir $2)) 258dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 259dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 260dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 261dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 262 263cleanfiles := $$(cleanfiles) $2 \ 264 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 265 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 266 267dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp \ 268 -E -ffreestanding $$(CPPFLAGS) \ 269 -MD -MF $$(dtb-predep-$2) -MT $2 270 271dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 272 273-include $$(dtb-dep-$2) 274-include $$(dtb-predep-$2) 275-include $$(dtb-cmd-file-$2) 276 277dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 278dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 279 280$2: $1 FORCE 281# Check if any prerequisites are newer than the target and 282# check if command line has changed 283 $$(if $$(strip $$(filter-out FORCE, $$?) \ 284 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 285 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2)) \ 286 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 287 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 288 @set -e; \ 289 mkdir -p $$(dir $2); \ 290 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 291 $$(dtb-precmd-$2); \ 292 $(cmd-echo-silent) ' DTC $$@'; \ 293 $$(dtb-cmd-$2); \ 294 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 295 $$(dtb-cmd-file-$2) ;\ 296 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 297 $$(dtb-cmd-file-$2) ;\ 298 ) 299 300endef 301 302additional-compile-deps := 303