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 53.PHONY: FORCE 54FORCE: 55 56define process_srcs 57objs += $2 58comp-dep-$2 := $$(dir $2).$$(notdir $2).d 59comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 60comp-sm-$2 := $(sm) 61comp-lib-$2 := $(libname) 62 63cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 64 65ifeq ($$(filter %.c,$1),$1) 66comp-q-$2 := CC 67comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 68 $$(cflags-remove-$2), \ 69 $$(CFLAGS) $$(CFLAGS_WARNS) \ 70 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 71 $$(cflags-lib$$(comp-lib-$2)) $$(cflags-$2)) 72else ifeq ($$(filter %.S,$1),$1) 73comp-q-$2 := AS 74comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 75 $$(aflags-remove-$2), \ 76 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 77 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 78else 79$$(error "Don't know what to do with $1") 80endif 81 82comp-flags-$2 += -MD -MF $$(comp-dep-$2) -MT $$@ \ 83 $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 84 $$(cppflags-remove-$2), \ 85 $$(nostdinc$$(comp-sm-$2)) $$(CPPFLAGS) \ 86 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 87 $$(addprefix -I,$$(incdirs-lib$$(comp-lib-$2))) \ 88 $$(addprefix -I,$$(incdirs-$2)) \ 89 $$(cppflags$$(comp-sm-$2)) \ 90 $$(cppflags-lib$$(comp-lib-$2)) $$(cppflags-$2)) 91 92comp-cmd-$2 = $$(CC$(sm)) $$(comp-flags-$2) -c $$< -o $$@ 93comp-objcpy-cmd-$2 = $$(OBJCOPY$(sm)) \ 94 --rename-section .rodata=.rodata.$1 \ 95 --rename-section .rodata.str1.1=.rodata.str1.1.$1 \ 96 $2 97 98-include $$(comp-cmd-file-$2) 99-include $$(comp-dep-$2) 100 101 102$2: $1 FORCE 103# Check if any prerequisites are newer than the target and 104# check if command line has changed 105 $$(if $$(strip $$(filter-out FORCE, $$?) \ 106 $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 107 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 108 @set -e ;\ 109 mkdir -p $$(dir $2) ;\ 110 echo ' $$(comp-q-$2) $$@' ;\ 111 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 112 $$(comp-cmd-$2) ;\ 113 $(cmd-echo) $$(comp-objcpy-cmd-$2) ;\ 114 $$(comp-objcpy-cmd-$2) ;\ 115 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 116 $$(comp-cmd-file-$2) ;\ 117 ) 118 119endef 120 121$(foreach f, $(srcs), $(eval $(call \ 122 process_srcs,$(f),$(out-dir)/$(base-prefix)$$(basename $f).o))) 123 124$(objs): $(conf-file) 125