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 56FORCE: 57 58 59define process_srcs 60objs += $2 61comp-dep-$2 := $$(dir $2).$$(notdir $2).d 62comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 63comp-sm-$2 := $(sm) 64comp-lib-$2 := $(libname) 65 66cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 67 68ifeq ($$(filter %.c,$1),$1) 69comp-q-$2 := CC 70comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 71 $$(cflags-remove-$2), \ 72 $$(CFLAGS) $$(CFLAGS_WARNS) \ 73 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 74 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 75ifeq ($C,1) 76check-cmd-$2 = $(CHECK) $$(comp-cppflags-$2) $$< 77echo-check-$2 := $(cmd-echo-silent) 78echo-check-cmd-$2 = $(cmd-echo) $$(subst \",\\\",$$(check-cmd-$2)) 79endif 80 81else ifeq ($$(filter %.S,$1),$1) 82comp-q-$2 := AS 83comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 84 $$(aflags-remove-$2), \ 85 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 86 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 87 88else 89$$(error "Don't know what to do with $1") 90endif 91 92comp-cppflags-$2 = $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 93 $$(cppflags-remove-$2), \ 94 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 95 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 96 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 97 $$(addprefix -I,$$(incdirs-$2)) \ 98 $$(cppflags$$(comp-sm-$2)) \ 99 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) 100 101comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ 102comp-flags-$2 += $$(comp-cppflags-$2) 103 104comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 105comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 106 --rename-section .rodata=.rodata.$1 \ 107 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 108 $2 109 110# Assign defaults if unassigned 111echo-check-$2 ?= true 112echo-check-cmd-$2 ?= true 113check-cmd-$2 ?= true 114 115-include $$(comp-cmd-file-$2) 116-include $$(comp-dep-$2) 117 118 119$2: $1 FORCE 120# Check if any prerequisites are newer than the target and 121# check if command line has changed 122 $$(if $$(strip $$(filter-out FORCE, $$?) \ 123 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 124 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 125 @set -e ;\ 126 mkdir -p $$(dir $2) ;\ 127 $$(echo-check-$2) ' CHECK $$<' ;\ 128 $$(echo-check-cmd-$2) ;\ 129 $$(check-cmd-$2) ;\ 130 $(cmd-echo-silent) ' $$(comp-q-$2) $$@' ;\ 131 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 132 $$(comp-cmd-$2) ;\ 133 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 134 $$(comp-objcpy-cmd-$2) ;\ 135 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 136 $$(comp-cmd-file-$2) ;\ 137 ) 138 139endef 140 141$(foreach f, $(srcs), $(eval $(call \ 142 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 143 144$(objs): $(conf-file) 145