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) 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-$2), \ 74 $$(CFLAGS) $$(CFLAGS_WARNS) \ 75 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 76 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 77ifeq ($C,1) 78check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 79echo-check-$2 := $(cmd-echo-silent) 80echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 81endif 82 83else ifeq ($$(filter %.S,$1),$1) 84comp-q-$2 := AS 85comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 86 $$(aflags-remove-$2), \ 87 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 88 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 89 90else 91$$(error "Don't know what to do with $1") 92endif 93 94comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 95 $$(cppflags-remove-$2), \ 96 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 97 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 98 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 99 $$(addprefix -I,$$(incdirs-$2)) \ 100 $$(cppflags$$(comp-sm-$2)) \ 101 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) 102 103comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 104comp-flags-$2 += $$(comp-cppflags-$2) 105 106comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 107comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 108 --rename-section .rodata=.rodata.$1 \ 109 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 110 $2 111 112# Assign defaults if unassigned 113echo-check-$2 ?= true 114echo-check-cmd-$2 ?= true 115check-cmd-$2 ?= true 116 117-include $$(comp-cmd-file-$2) 118-include $$(comp-dep-$2) 119 120 121$2: $1 FORCE-GENSRC 122# Check if any prerequisites are newer than the target and 123# check if command line has changed 124 $$(if $$(strip $$(filter-out FORCE-GENSRC, $$?) \ 125 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 126 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 127 @set -e ;\ 128 mkdir -p $$(dir $2) ;\ 129 $$(echo-check-$2) ' CHECK $$<' ;\ 130 $$(echo-check-cmd-$2) ;\ 131 $$(check-cmd-$2) ;\ 132 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 133 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 134 $$(comp-cmd-$2) ;\ 135 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 136 $$(comp-objcpy-cmd-$2) ;\ 137 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 138 $$(comp-cmd-file-$2) ;\ 139 ) 140 141endef 142 143$(foreach f, $(srcs), $(eval $(call \ 144 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 145 146# Handle generated source files, that is, files that are compiled from out-dir 147$(foreach f, $(gen-srcs), $(eval $(call \ 148 process_srcs,$(out-dir)/$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 149 150$(objs): $(conf-file) 151 152define _gen-asm-defines-file 153# c-filename in $1 154# h-filename in $2 155# s-filename in $3 156 157FORCE-GENSRC: $(2) 158 159comp-dep-$3 := $$(dir $3)$$(notdir $3).d 160comp-cmd-file-$3:= $$(dir $3)$$(notdir $3).cmd 161comp-sm-$3 := $(sm) 162 163cleanfiles := $$(cleanfiles) $$(comp-dep-$3) $$(comp-cmd-file-$3) $3 $2 164 165comp-flags-$3 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 166 $$(cflags-remove-$3), \ 167 $$(CFLAGS) $$(CFLAGS_WARNS) \ 168 $$(comp-cflags$$(comp-sm-$3)) $$(cflags$$(comp-sm-$3)) \ 169 $$(cflags-lib$$(comp-lib-$3)) $$(cflags-$3)) 170 171comp-cppflags-$3 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 172 $$(cppflags-remove-$3), \ 173 $$(nostdinc$$(comp-sm-$3)) $$(CPPFLAGS) \ 174 $$(addprefix -I,$$(incdirs$$(comp-sm-$3))) \ 175 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$3))) \ 176 $$(addprefix -I,$$(incdirs-$3)) \ 177 $$(cppflags$$(comp-sm-$3)) \ 178 $$(cppflags-lib$$(comp-lib-$3)) $$(cppflags-$3)) 179 180comp-flags-$3 += -MD -MF $$(comp-dep-$3) -MT $$@ 181comp-flags-$3 += $$(comp-cppflags-$3) 182 183comp-cmd-$3 = $$(CC$(sm)) $$(comp-flags-$3) -fverbose-asm -S $$< -o $$@ 184 185 186-include $$(comp-cmd-file-$3) 187-include $$(comp-dep-$3) 188 189$3: $1 $(conf-file) FORCE 190# Check if any prerequisites are newer than the target and 191# check if command line has changed 192 $$(if $$(strip $$(filter-out FORCE, $$?) \ 193 $$(filter-out $$(comp-cmd-$3), $$(old-cmd-$3)) \ 194 $$(filter-out $$(old-cmd-$3), $$(comp-cmd-$3))), \ 195 @set -e ;\ 196 mkdir -p $$(dir $2) $$(dir $3) ;\ 197 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$3)) ;\ 198 $$(comp-cmd-$3) ;\ 199 echo "old-cmd-$3 := $$(subst \",\\\",$$(comp-cmd-$3))" > \ 200 $$(comp-cmd-file-$3) ;\ 201 ) 202 203guard-$2 := $$(subst -,_,$$(subst .,_,$$(subst /,_,$2))) 204 205$(2): $(3) 206 $(q)set -e; \ 207 $(cmd-echo-silent) ' CHK $$@'; \ 208 mkdir -p $$(dir $$@); \ 209 echo "#ifndef $$(guard-$2)" >$$@.tmp; \ 210 echo "#define $$(guard-$2)" >>$$@.tmp; \ 211 sed -ne 's|^==>\([^ ]*\) [\$$$$#]*\([-0-9]*\) \([^@/]*\).*|#define \1\t\2\t/* \3*/|p' \ 212 < $$< >>$$@.tmp; \ 213 echo "#endif" >>$$@.tmp; \ 214 $$(call mv-if-changed,$$@.tmp,$$@) 215 216endef 217 218define gen-asm-defines-file 219$(call _gen-asm-defines-file,$1,$2,$(dir $2).$(notdir $(2:.h=.s))) 220endef 221 222ifneq ($(asm-defines-file),) 223h-file-$(asm-defines-file) := $(out-dir)/$(sm)/include/generated/$(basename $(notdir $(asm-defines-file))).h 224$(eval $(call gen-asm-defines-file,$(asm-defines-file),$(h-file-$(asm-defines-file)))) 225asm-defines-file := 226endif 227