1# Input 2# 3# The output from mk/sub.mk 4# base-prefix 5# conf-file [optional] if set, all objects will depend on $(conf-file) 6# 7# Output 8# 9# set objs 10# update cleanfiles 11# 12# Generates explicit rules for all objs 13 14objs := 15 16# Disable all builtin rules 17.SUFFIXES: 18 19comp-cflags$(sm) = -std=gnu99 20comp-aflags$(sm) = 21comp-cppflags$(sm) = 22 23ifndef NOWERROR 24comp-cflags$(sm) += -Werror 25endif 26comp-cflags$(sm) += -fdiagnostics-show-option 27 28comp-cflags-warns-high = \ 29 -Wall -Wcast-align \ 30 -Werror-implicit-function-declaration -Wextra -Wfloat-equal \ 31 -Wformat-nonliteral -Wformat-security -Wformat=2 -Winit-self \ 32 -Wmissing-declarations -Wmissing-format-attribute \ 33 -Wmissing-include-dirs -Wmissing-noreturn \ 34 -Wmissing-prototypes -Wnested-externs -Wpointer-arith \ 35 -Wshadow -Wstrict-prototypes -Wswitch-default \ 36 -Wwrite-strings \ 37 -Wno-missing-field-initializers -Wno-format-zero-length 38comp-cflags-warns-medium = \ 39 -Waggregate-return -Wredundant-decls 40comp-cflags-warns-low = \ 41 -Wold-style-definition -Wstrict-aliasing=2 \ 42 -Wundef -pedantic \ 43 -Wdeclaration-after-statement 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 53CHECK ?= sparse 54 55.PHONY: FORCE 56.PHONY: FORCE-GENSRC 57FORCE: 58FORCE-GENSRC: 59 60 61define process_srcs 62objs += $2 63comp-dep-$2 := $$(dir $2).$$(notdir $2).d 64comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 65comp-sm-$2 := $(sm) 66comp-lib-$2 := $(libname)-$(sm) 67 68cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 69 70ifeq ($$(filter %.c,$1),$1) 71comp-q-$2 := CC 72comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 73 $$(cflags-remove-$$(comp-sm-$2)) \ 74 $$(cflags-remove-$2), \ 75 $$(CFLAGS$$(arch-bits-$$(comp-sm-$2))) $$(CFLAGS_WARNS) \ 76 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 77 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 78ifeq ($C,1) 79check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 80echo-check-$2 := $(cmd-echo-silent) 81echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 82endif 83 84else ifeq ($$(filter %.S,$1),$1) 85comp-q-$2 := AS 86comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 87 $$(aflags-remove-$$(comp-sm-$2)) \ 88 $$(aflags-remove-$2), \ 89 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 90 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 91 92else 93$$(error "Don't know what to do with $1") 94endif 95 96comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 97 $$(cppflags-remove-$$(comp-sm-$2)) \ 98 $$(cppflags-remove-$2), \ 99 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 100 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 101 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 102 $$(addprefix -I,$$(incdirs-$2)) \ 103 $$(cppflags$$(comp-sm-$2)) \ 104 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) 105 106comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 107comp-flags-$2 += $$(comp-cppflags-$2) 108 109comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 110comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 111 --rename-section .rodata=.rodata.$1 \ 112 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 113 $2 114 115# Assign defaults if unassigned 116echo-check-$2 ?= true 117echo-check-cmd-$2 ?= true 118check-cmd-$2 ?= true 119 120-include $$(comp-cmd-file-$2) 121-include $$(comp-dep-$2) 122 123 124$2: $1 FORCE-GENSRC 125# Check if any prerequisites are newer than the target and 126# check if command line has changed 127 $$(if $$(strip $$(filter-out FORCE-GENSRC, $$?) \ 128 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 129 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 130 @set -e ;\ 131 mkdir -p $$(dir $2) ;\ 132 $$(echo-check-$2) ' CHECK $$<' ;\ 133 $$(echo-check-cmd-$2) ;\ 134 $$(check-cmd-$2) ;\ 135 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 136 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 137 $$(comp-cmd-$2) ;\ 138 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 139 $$(comp-objcpy-cmd-$2) ;\ 140 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 141 $$(comp-cmd-file-$2) ;\ 142 ) 143 144endef 145 146$(foreach f, $(srcs), $(eval $(call \ 147 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 148 149# Handle generated source files, that is, files that are compiled from out-dir 150$(foreach f, $(gen-srcs), $(eval $(call process_srcs,$(f),$$(basename $f).o))) 151 152$(objs): $(conf-file) 153 154define _gen-asm-defines-file 155# c-filename in $1 156# h-filename in $2 157# s-filename in $3 158 159FORCE-GENSRC: $(2) 160 161comp-dep-$3 := $$(dir $3)$$(notdir $3).d 162comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 163comp-sm-$3 := $(sm) 164 165cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 166 167comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 168 $$(cflags-remove-$$(comp-sm-$3)) \ 169 $$(cflags-remove-$3), \ 170 $$(CFLAGS) $$(CFLAGS_WARNS) \ 171 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 172 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 173 174comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 175 $$(cppflags-remove-$$(comp-sm-$3)) \ 176 $$(cppflags-remove-$3), \ 177 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 178 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 179 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 180 $$(addprefix -I,$$(incdirs-$3)) \ 181 $$(cppflags$$(comp-sm-$3)) \ 182 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 183 184comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 185comp-flags-$3 += $$(comp-cppflags-$3) 186 187comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 188 189 190-include $$(comp-cmd-file-$3) 191-include $$(comp-dep-$3) 192 193$3: $1 $(conf-file) FORCE 194# Check if any prerequisites are newer than the target and 195# check if command line has changed 196 $$(if $$(strip $$(filter-out FORCE, $$?) \ 197 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 198 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 199 @set -e ;\ 200 mkdir -p $$(dir $2) $$(dir $3) ;\ 201 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 202 $$(comp-cmd-$3) ;\ 203 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 204 $$(comp-cmd-file-$3) ;\ 205 ) 206 207guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$2))) 208 209$(2): $(3) 210 $(q)set -e; \ 211 $(cmd-echo-silent) ' CHK $$@'; \ 212 mkdir -p $$(dir $$@); \ 213 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 214 echo "#define $$(guard-$2)" >>$$@.tmp; \ 215 sed -ne 's|^==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 216 < $$< >>$$@.tmp; \ 217 echo "#endif" >>$$@.tmp; \ 218 $$(call mv-if-changed,$$@.tmp,$$@) 219 220endef 221 222define gen-asm-defines-file 223$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s))) 224endef 225 226ifneq ($(asm-defines-file),) 227h-file-$(asm-defines-file) := $(out-dir)/$(sm)/include/generated/$(basename $(notdir $(asm-defines-file))).h 228$(eval $(call gen-asm-defines-file,$(asm-defines-file),$(h-file-$(asm-defines-file)))) 229asm-defines-file := 230endif 231