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 40comp-cflags-warns-high += $(call cc-option,-Wpacked-not-aligned) 41comp-cflags-warns-high += $(call cc-option,-Waddress-of-packed-member) 42ifeq ($(CFG_WARN_DECL_AFTER_STATEMENT),y) 43comp-cflags-warns-high += $(call cc-option,-Wdeclaration-after-statement) 44endif 45comp-cflags-warns-medium = \ 46 -Wredundant-decls 47comp-cflags-warns-low = \ 48 -Wold-style-definition -Wstrict-aliasing=2 \ 49 -Wundef 50 51comp-cflags-warns-1:= $(comp-cflags-warns-high) 52comp-cflags-warns-2:= $(comp-cflags-warns-1) $(comp-cflags-warns-medium) 53comp-cflags-warns-3:= $(comp-cflags-warns-2) $(comp-cflags-warns-low) 54 55WARNS ?= 3 56 57comp-cflags$(sm) += $(comp-cflags-warns-$(WARNS)) \ 58 $(comp-cflags-warns-$(COMPILER_$(sm))) 59 60CHECK ?= sparse 61 62.PHONY: FORCE 63.PHONY: FORCE-GENSRC$(sm) 64FORCE: 65FORCE-GENSRC$(sm): 66 67 68define process_srcs 69objs += $2 70comp-dep-$2 := $$(dir $2).$$(notdir $2).d 71comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 72comp-sm-$2 := $(sm) 73comp-lib-$2 := $(libname)-$(sm) 74 75cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 76 77ifeq ($$(filter %.c,$1),$1) 78comp-q-$2 := CC # one trailing space 79comp-compiler-$2 := $$(CC$(sm)) 80comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 81 $$(cflags-remove-$$(comp-sm-$2)) \ 82 $$(cflags-remove-$2), \ 83 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS) \ 84 $$(CFLAGS_WARNS) \ 85 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 86 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 87ifeq ($C,1) 88check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 89echo-check-$2 := $(cmd-echo-silent) 90echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 91endif 92 93else ifeq ($$(filter %.S,$1),$1) 94comp-q-$2 := AS # one trailing space 95comp-compiler-$2 := $$(CC$(sm)) 96comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 97 $$(aflags-remove-$$(comp-sm-$2)) \ 98 $$(aflags-remove-$2), \ 99 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 100 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 101 102else ifeq ($$(filter %.cpp,$1),$1) 103comp-q-$2 := CXX 104comp-compiler-$2 := $$(CXX$(sm)) 105comp-flags-$2 = $$(filter-out $$(CXXFLAGS_REMOVE) $$(cxxflags-remove) \ 106 $$(cxxflags-remove-$$(comp-sm-$2)) \ 107 $$(cxxflags-remove-$2), \ 108 $$(CXXFLAGS) $$(comp-cxxflags$$(comp-sm-$2)) \ 109 $$(cxxflags$$(comp-sm-$2)) $$(cxxflags-$2)) 110 111else 112$$(error "Don't know what to do with $1") 113endif 114 115comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 116 $$(cppflags-remove-$$(comp-sm-$2)) \ 117 $$(cppflags-remove-$2), \ 118 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 119 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 120 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 121 $$(addprefix -I,$$(incdirs-$2)) \ 122 $$(cppflags$$(comp-sm-$2)) \ 123 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 124 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$$(patsubst $$(out-dir)/%,%,$1)))) 125 126comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 127comp-flags-$2 += $$(comp-cppflags-$2) 128 129comp-cmd-$2 = $$(comp-compiler-$2) $$(comp-flags-$2) -c $$< -o $$@ 130comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 131 --rename-section .rodata=.rodata.$1 \ 132 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 133 $2 134 135# Assign defaults if unassigned 136echo-check-$2 ?= true 137echo-check-cmd-$2 ?= true 138check-cmd-$2 ?= true 139 140-include $$(comp-cmd-file-$2) 141-include $$(comp-dep-$2) 142 143 144$2: $1 FORCE-GENSRC$(sm) 145# Check if any prerequisites are newer than the target and 146# check if command line has changed 147 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 148 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 149 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 150 @set -e ;\ 151 mkdir -p $$(dir $2) ;\ 152 $$(echo-check-$2) ' CHECK $$<' ;\ 153 $$(echo-check-cmd-$2) ;\ 154 $$(check-cmd-$2) ;\ 155 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 156 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 157 $$(comp-cmd-$2) ;\ 158 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 159 $$(comp-objcpy-cmd-$2) ;\ 160 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 161 $$(comp-cmd-file-$2) ;\ 162 ) 163 164endef 165 166$(foreach f, $(srcs), $(eval $(call \ 167 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 168 169# Handle generated source files, that is, files that are compiled from out-dir 170$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 171 172# Handle specified source files, that is, files that have a specified path 173# but where the object file should go into a specified out directory 174$(foreach f, $(spec-srcs), $(eval $(call \ 175 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 176 177$(objs): $(conf-file) $(additional-compile-deps) 178 179define _gen-asm-defines-file 180# c-filename in $1 181# h-filename in $2 182# s-filename in $3 183# Dependencies in $4 184 185FORCE-GENSRC$(sm): $(2) 186 187comp-dep-$3 := $$(dir $3)$$(notdir $3).d 188comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 189comp-sm-$3 := $(sm) 190 191cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 192 193comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 194 $$(cflags-remove-$$(comp-sm-$3)) \ 195 $$(cflags-remove-$3), \ 196 $$(CFLAGS) $$(CFLAGS_WARNS) \ 197 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 198 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 199 200comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 201 $$(cppflags-remove-$$(comp-sm-$3)) \ 202 $$(cppflags-remove-$3), \ 203 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 204 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 205 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 206 $$(addprefix -I,$$(incdirs-$3)) \ 207 $$(cppflags$$(comp-sm-$3)) \ 208 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 209 210comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 211comp-flags-$3 += $$(comp-cppflags-$3) 212 213comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 214 215 216-include $$(comp-cmd-file-$3) 217-include $$(comp-dep-$3) 218 219$3: $1 $(conf-file) $(4) FORCE 220# Check if any prerequisites are newer than the target and 221# check if command line has changed 222 $$(if $$(strip $$(filter-out FORCE, $$?) \ 223 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 224 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 225 @set -e ;\ 226 mkdir -p $$(dir $2) $$(dir $3) ;\ 227 $(cmd-echo-silent) ' CC $$@'; \ 228 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 229 $$(comp-cmd-$3) ;\ 230 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 231 $$(comp-cmd-file-$3) ;\ 232 ) 233 234guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$$(subst +,_,$2)))) 235 236$(2): $(3) 237 $(q)set -e; \ 238 $(cmd-echo-silent) ' CHK $$@'; \ 239 mkdir -p $$(dir $$@); \ 240 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 241 echo "#define $$(guard-$2)" >>$$@.tmp; \ 242 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 243 < $$< >>$$@.tmp; \ 244 echo "#endif" >>$$@.tmp; \ 245 $$(call mv-if-changed,$$@.tmp,$$@) 246 247endef 248 249define gen-asm-defines-file 250$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s)),$(asm-defines-$(notdir $(1))-deps)) 251endef 252 253$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 254 255# Device tree source file compilation 256DTC := dtc 257 258define gen-dtb-file 259# dts file path/name in $1 260# dtb file path/name in $2 261 262dtb-basename-$2 := $$(basename $$(notdir $2)) 263dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 264dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 265dtb-precmd-file-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.cmd 266dtb-dep-$2 := $$(dir $2).$$(notdir $2).d 267dtb-cmd-file-$2 := $$(dir $2).$$(notdir $2).cmd 268 269cleanfiles := $$(cleanfiles) $2 \ 270 $$(dtb-predts-$2) $$(dtb-predep-$2) \ 271 $$(dtb-dep-$2) $$(dtb-cmd-file-$2) 272 273dtb-cppflags-$2 := -Icore/include/ -x assembler-with-cpp -Ulinux -Uunix \ 274 -E -ffreestanding $$(CPPFLAGS) \ 275 -MD -MF $$(dtb-predep-$2) -MT $$(dtb-predts-$2) 276 277dtb-dtcflags-$2 := $$(DTC_FLAGS) -I dts -O dtb -Wno-unit_address_vs_reg \ 278 -d $$(dtb-dep-$2) 279 280-include $$(dtb-dep-$2) 281-include $$(dtb-predep-$2) 282-include $$(dtb-cmd-file-$2) 283-include $$(dtb-precmd-file-$2) 284 285dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 286dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 287 288$$(dtb-predts-$2): $1 FORCE 289 $$(if $$(strip $$(filter-out FORCE, $$?) \ 290 $$(filter-out $$(dtb-precmd-$2), $$(dtb-old-precmd-$2)) \ 291 $$(filter-out $$(dtb-old-precmd-$2), $$(dtb-precmd-$2))), \ 292 $(q)set -e; \ 293 mkdir -p $$(dir $2); \ 294 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 295 $$(dtb-precmd-$2); \ 296 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 297 $$(dtb-precmd-file-$2) ;\ 298 ) 299 300$2: $$(dtb-predts-$2) FORCE 301 $$(if $$(strip $$(filter-out FORCE, $$?) \ 302 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 303 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 304 $(q)set -e; \ 305 mkdir -p $$(dir $2); \ 306 $(cmd-echo-silent) ' DTC $$@'; \ 307 $$(dtb-cmd-$2); \ 308 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" > \ 309 $$(dtb-cmd-file-$2) ;\ 310 ) 311 312endef 313 314additional-compile-deps := 315