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