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=gnu11 21comp-aflags$(sm) = 22comp-cppflags$(sm) = 23 24ifeq ($(CFG_WERROR),y) 25comp-cflags$(sm) += -Werror 26endif 27comp-cflags$(sm) += -fdiagnostics-show-option 28 29comp-cflags-warns-high = \ 30 -Wall -Wcast-align \ 31 -Werror-implicit-function-declaration -Wextra -Wfloat-equal \ 32 -Wformat-nonliteral -Wformat-security -Wformat=2 -Winit-self \ 33 -Wmissing-declarations -Wmissing-format-attribute \ 34 -Wmissing-include-dirs -Wmissing-noreturn \ 35 -Wmissing-prototypes -Wnested-externs -Wpointer-arith \ 36 -Wshadow -Wstrict-prototypes -Wswitch-default \ 37 -Wwrite-strings \ 38 -Wno-missing-field-initializers -Wno-format-zero-length \ 39 -Wno-c2x-extensions 40ifeq ($(CFG_WARN_DECL_AFTER_STATEMENT),y) 41comp-cflags-warns-high += $(call cc-option,-Wdeclaration-after-statement) 42endif 43comp-cflags-warns-medium = \ 44 -Wredundant-decls 45comp-cflags-warns-low = \ 46 -Wold-style-definition -Wstrict-aliasing=2 \ 47 -Wundef 48 49comp-cflags-warns-1:= $(comp-cflags-warns-high) 50comp-cflags-warns-2:= $(comp-cflags-warns-1) $(comp-cflags-warns-medium) 51comp-cflags-warns-3:= $(comp-cflags-warns-2) $(comp-cflags-warns-low) 52 53WARNS ?= 3 54 55comp-cflags$(sm) += $(comp-cflags-warns-$(WARNS)) \ 56 $(comp-cflags-warns-$(COMPILER_$(sm))) 57 58CHECK ?= sparse 59 60.PHONY: FORCE 61.PHONY: FORCE-GENSRC$(sm) 62FORCE: 63FORCE-GENSRC$(sm): 64 65 66define process_srcs 67objs += $2 68comp-dep-$2 := $$(dir $2).$$(notdir $2).d 69comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 70comp-sm-$2 := $(sm) 71comp-lib-$2 := $(libname)-$(sm) 72 73cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 74 75ifeq ($$(filter %.c,$1),$1) 76comp-q-$2 := CC # one trailing space 77comp-compiler-$2 := $$(CC$(sm)) 78comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 79 $$(cflags-remove-$$(comp-sm-$2)) \ 80 $$(cflags-remove-$2), \ 81 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS_WARNS) \ 82 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 83 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 84ifeq ($C,1) 85check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 86echo-check-$2 := $(cmd-echo-silent) 87echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 88endif 89 90else ifeq ($$(filter %.S,$1),$1) 91comp-q-$2 := AS # one trailing space 92comp-compiler-$2 := $$(CC$(sm)) 93comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 94 $$(aflags-remove-$$(comp-sm-$2)) \ 95 $$(aflags-remove-$2), \ 96 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 97 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 98 99else ifeq ($$(filter %.cpp,$1),$1) 100comp-q-$2 := CXX 101comp-compiler-$2 := $$(CXX$(sm)) 102comp-flags-$2 = $$(filter-out $$(CXXFLAGS_REMOVE) $$(cxxflags-remove) \ 103 $$(cxxflags-remove-$$(comp-sm-$2)) \ 104 $$(cxxflags-remove-$2), \ 105 $$(CXXFLAGS) $$(comp-cxxflags$$(comp-sm-$2)) \ 106 $$(cxxflags$$(comp-sm-$2)) $$(cxxflags-$2)) 107 108else 109$$(error "Don't know what to do with $1") 110endif 111 112comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 113 $$(cppflags-remove-$$(comp-sm-$2)) \ 114 $$(cppflags-remove-$2), \ 115 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 116 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 117 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 118 $$(addprefix -I,$$(incdirs-$2)) \ 119 $$(cppflags$$(comp-sm-$2)) \ 120 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 121 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$1))) 122 123comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 124comp-flags-$2 += $$(comp-cppflags-$2) 125 126comp-cmd-$2 = $$(comp-compiler-$2) $$(comp-flags-$2) -c $$< -o $$@ 127comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 128 --rename-section .rodata=.rodata.$1 \ 129 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 130 $2 131 132# Assign defaults if unassigned 133echo-check-$2 ?= true 134echo-check-cmd-$2 ?= true 135check-cmd-$2 ?= true 136 137-include $$(comp-cmd-file-$2) 138-include $$(comp-dep-$2) 139 140 141$2: $1 FORCE-GENSRC$(sm) 142# Check if any prerequisites are newer than the target and 143# check if command line has changed 144 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 145 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 146 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 147 @set -e ;\ 148 mkdir -p $$(dir $2) ;\ 149 $$(echo-check-$2) ' CHECK $$<' ;\ 150 $$(echo-check-cmd-$2) ;\ 151 $$(check-cmd-$2) ;\ 152 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 153 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 154 $$(comp-cmd-$2) ;\ 155 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 156 $$(comp-objcpy-cmd-$2) ;\ 157 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 158 $$(comp-cmd-file-$2) ;\ 159 ) 160 161endef 162 163$(foreach f, $(srcs), $(eval $(call \ 164 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 165 166# Handle generated source files, that is, files that are compiled from out-dir 167$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 168 169# Handle specified source files, that is, files that have a specified path 170# but where the object file should go into a specified out directory 171$(foreach f, $(spec-srcs), $(eval $(call \ 172 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 173 174$(objs): $(conf-file) $(additional-compile-deps) 175 176define _gen-asm-defines-file 177# c-filename in $1 178# h-filename in $2 179# s-filename in $3 180# Dependencies in $4 181 182FORCE-GENSRC$(sm): $(2) 183 184comp-dep-$3 := $$(dir $3)$$(notdir $3).d 185comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 186comp-sm-$3 := $(sm) 187 188cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 189 190comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 191 $$(cflags-remove-$$(comp-sm-$3)) \ 192 $$(cflags-remove-$3), \ 193 $$(CFLAGS) $$(CFLAGS_WARNS) \ 194 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 195 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 196 197comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 198 $$(cppflags-remove-$$(comp-sm-$3)) \ 199 $$(cppflags-remove-$3), \ 200 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 201 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 202 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 203 $$(addprefix -I,$$(incdirs-$3)) \ 204 $$(cppflags$$(comp-sm-$3)) \ 205 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 206 207comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 208comp-flags-$3 += $$(comp-cppflags-$3) 209 210comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 211 212 213-include $$(comp-cmd-file-$3) 214-include $$(comp-dep-$3) 215 216$3: $1 $(conf-file) $(4) FORCE 217# Check if any prerequisites are newer than the target and 218# check if command line has changed 219 $$(if $$(strip $$(filter-out FORCE, $$?) \ 220 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 221 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 222 @set -e ;\ 223 mkdir -p $$(dir $2) $$(dir $3) ;\ 224 $(cmd-echo-silent) ' CC $$@'; \ 225 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 226 $$(comp-cmd-$3) ;\ 227 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 228 $$(comp-cmd-file-$3) ;\ 229 ) 230 231guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$$(subst +,_,$2)))) 232 233$(2): $(3) 234 $(q)set -e; \ 235 $(cmd-echo-silent) ' CHK $$@'; \ 236 mkdir -p $$(dir $$@); \ 237 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 238 echo "#define $$(guard-$2)" >>$$@.tmp; \ 239 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 240 < $$< >>$$@.tmp; \ 241 echo "#endif" >>$$@.tmp; \ 242 $$(call mv-if-changed,$$@.tmp,$$@) 243 244endef 245 246define gen-asm-defines-file 247$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s)),$(asm-defines-$(notdir $(1))-deps)) 248endef 249 250$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 251 252# Device tree source file compilation 253DTC := dtc 254DTC_FLAGS += -I dts -O dtb 255DTC_FLAGS += -Wno-unit_address_vs_reg 256 257define gen-dtb-file 258# dts file path/name in $1 259# dtb file path/name in $2 260 261dtb-basename-$2 := $$(basename $$(notdir $2)) 262dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 263dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 264dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 265dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 266 267cleanfiles := $$(cleanfiles) $2 \ 268 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 269 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 270 271dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp \ 272 -E -ffreestanding $$(CPPFLAGS) \ 273 -MD -MF $$(dtb-predep-$2) -MT $2 274 275dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 276 277-include $$(dtb-dep-$2) 278-include $$(dtb-predep-$2) 279-include $$(dtb-cmd-file-$2) 280 281dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 282dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 283 284$2: $1 FORCE 285# Check if any prerequisites are newer than the target and 286# check if command line has changed 287 $$(if $$(strip $$(filter-out FORCE, $$?) \ 288 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 289 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2)) \ 290 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 291 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 292 @set -e; \ 293 mkdir -p $$(dir $2); \ 294 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 295 $$(dtb-precmd-$2); \ 296 $(cmd-echo-silent) ' DTC $$@'; \ 297 $$(dtb-cmd-$2); \ 298 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 299 $$(dtb-cmd-file-$2) ;\ 300 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 301 $$(dtb-cmd-file-$2) ;\ 302 ) 303 304endef 305 306additional-compile-deps := 307