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))) $$(CFLAGS_WARNS) \ 84 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 85 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 86ifeq ($C,1) 87check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 88echo-check-$2 := $(cmd-echo-silent) 89echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 90endif 91 92else ifeq ($$(filter %.S,$1),$1) 93comp-q-$2 := AS # one trailing space 94comp-compiler-$2 := $$(CC$(sm)) 95comp-flags-$2 = $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 96 $$(aflags-remove-$$(comp-sm-$2)) \ 97 $$(aflags-remove-$2), \ 98 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 99 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 100 101else ifeq ($$(filter %.cpp,$1),$1) 102comp-q-$2 := CXX 103comp-compiler-$2 := $$(CXX$(sm)) 104comp-flags-$2 = $$(filter-out $$(CXXFLAGS_REMOVE) $$(cxxflags-remove) \ 105 $$(cxxflags-remove-$$(comp-sm-$2)) \ 106 $$(cxxflags-remove-$2), \ 107 $$(CXXFLAGS) $$(comp-cxxflags$$(comp-sm-$2)) \ 108 $$(cxxflags$$(comp-sm-$2)) $$(cxxflags-$2)) 109 110else 111$$(error "Don't know what to do with $1") 112endif 113 114comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 115 $$(cppflags-remove-$$(comp-sm-$2)) \ 116 $$(cppflags-remove-$2), \ 117 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 118 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 119 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 120 $$(addprefix -I,$$(incdirs-$2)) \ 121 $$(cppflags$$(comp-sm-$2)) \ 122 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) \ 123 -D__FILE_ID__=$$(subst -,_,$$(subst /,_,$$(subst .,_,$1))) 124 125comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 126comp-flags-$2 += $$(comp-cppflags-$2) 127 128comp-cmd-$2 = $$(comp-compiler-$2) $$(comp-flags-$2) -c $$< -o $$@ 129comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 130 --rename-section .rodata=.rodata.$1 \ 131 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 132 $2 133 134# Assign defaults if unassigned 135echo-check-$2 ?= true 136echo-check-cmd-$2 ?= true 137check-cmd-$2 ?= true 138 139-include $$(comp-cmd-file-$2) 140-include $$(comp-dep-$2) 141 142 143$2: $1 FORCE-GENSRC$(sm) 144# Check if any prerequisites are newer than the target and 145# check if command line has changed 146 $$(if $$(strip $$(filter-out FORCE-GENSRC$(sm), $$?) \ 147 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 148 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 149 @set -e ;\ 150 mkdir -p $$(dir $2) ;\ 151 $$(echo-check-$2) ' CHECK $$<' ;\ 152 $$(echo-check-cmd-$2) ;\ 153 $$(check-cmd-$2) ;\ 154 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 155 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 156 $$(comp-cmd-$2) ;\ 157 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 158 $$(comp-objcpy-cmd-$2) ;\ 159 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 160 $$(comp-cmd-file-$2) ;\ 161 ) 162 163endef 164 165$(foreach f, $(srcs), $(eval $(call \ 166 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 167 168# Handle generated source files, that is, files that are compiled from out-dir 169$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 170 171# Handle specified source files, that is, files that have a specified path 172# but where the object file should go into a specified out directory 173$(foreach f, $(spec-srcs), $(eval $(call \ 174 process_srcs,$(f),$(spec-out-dir)/$$(notdir $$(basename $f)).o))) 175 176$(objs): $(conf-file) $(additional-compile-deps) 177 178define _gen-asm-defines-file 179# c-filename in $1 180# h-filename in $2 181# s-filename in $3 182# Dependencies in $4 183 184FORCE-GENSRC$(sm): $(2) 185 186comp-dep-$3 := $$(dir $3)$$(notdir $3).d 187comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 188comp-sm-$3 := $(sm) 189 190cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 191 192comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 193 $$(cflags-remove-$$(comp-sm-$3)) \ 194 $$(cflags-remove-$3), \ 195 $$(CFLAGS) $$(CFLAGS_WARNS) \ 196 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 197 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 198 199comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 200 $$(cppflags-remove-$$(comp-sm-$3)) \ 201 $$(cppflags-remove-$3), \ 202 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 203 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 204 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 205 $$(addprefix -I,$$(incdirs-$3)) \ 206 $$(cppflags$$(comp-sm-$3)) \ 207 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 208 209comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 210comp-flags-$3 += $$(comp-cppflags-$3) 211 212comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 213 214 215-include $$(comp-cmd-file-$3) 216-include $$(comp-dep-$3) 217 218$3: $1 $(conf-file) $(4) FORCE 219# Check if any prerequisites are newer than the target and 220# check if command line has changed 221 $$(if $$(strip $$(filter-out FORCE, $$?) \ 222 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 223 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 224 @set -e ;\ 225 mkdir -p $$(dir $2) $$(dir $3) ;\ 226 $(cmd-echo-silent) ' CC $$@'; \ 227 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 228 $$(comp-cmd-$3) ;\ 229 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 230 $$(comp-cmd-file-$3) ;\ 231 ) 232 233guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$$(subst +,_,$2)))) 234 235$(2): $(3) 236 $(q)set -e; \ 237 $(cmd-echo-silent) ' CHK $$@'; \ 238 mkdir -p $$(dir $$@); \ 239 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 240 echo "#define $$(guard-$2)" >>$$@.tmp; \ 241 sed -ne 's|^.*==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 242 < $$< >>$$@.tmp; \ 243 echo "#endif" >>$$@.tmp; \ 244 $$(call mv-if-changed,$$@.tmp,$$@) 245 246endef 247 248define gen-asm-defines-file 249$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s)),$(asm-defines-$(notdir $(1))-deps)) 250endef 251 252$(foreach f,$(asm-defines-files),$(eval $(call gen-asm-defines-file,$(f),$(out-dir)/$(sm)/include/generated/$(basename $(notdir $(f))).h))) 253 254# Device tree source file compilation 255DTC := dtc 256DTC_FLAGS += -I dts -O dtb 257DTC_FLAGS += -Wno-unit_address_vs_reg 258 259define gen-dtb-file 260# dts file path/name in $1 261# dtb file path/name in $2 262 263dtb-basename-$2 := $$(basename $$(notdir $2)) 264dtb-predts-$2 := $$(dir $2)$$(dtb-basename-$2).pre.dts 265dtb-predep-$2 := $$(dir $2).$$(dtb-basename-$2).pre.dts.d 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 $$(dtb-predep-$2) -MT $2 276 277dtb-dtcflags-$2 := $$(DTC_FLAGS) -d $$(dtb-dep-$2) 278 279-include $$(dtb-dep-$2) 280-include $$(dtb-predep-$2) 281-include $$(dtb-cmd-file-$2) 282 283dtb-precmd-$2 = $$(CPP$(sm)) $$(dtb-cppflags-$2) -o $$(dtb-predts-$2) $$< 284dtb-cmd-$2 = $$(DTC) $$(dtb-dtcflags-$2) -o $$@ $$(dtb-predts-$2) 285 286$2: $1 FORCE 287# Check if any prerequisites are newer than the target and 288# check if command line has changed 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 $$(filter-out $$(dtb-cmd-$2), $$(dtb-old-cmd-$2)) \ 293 $$(filter-out $$(dtb-old-cmd-$2), $$(dtb-cmd-$2))), \ 294 @set -e; \ 295 mkdir -p $$(dir $2); \ 296 $(cmd-echo-silent) ' CPP $$(dtb-predts-$2)'; \ 297 $$(dtb-precmd-$2); \ 298 $(cmd-echo-silent) ' DTC $$@'; \ 299 $$(dtb-cmd-$2); \ 300 echo "dtb-old-precmd-$2 := $$(subst \",\\\",$$(dtb-precmd-$2))" > \ 301 $$(dtb-cmd-file-$2) ;\ 302 echo "dtb-old-cmd-$2 := $$(subst \",\\\",$$(dtb-cmd-$2))" >> \ 303 $$(dtb-cmd-file-$2) ;\ 304 ) 305 306endef 307 308additional-compile-deps := 309