1# Input 2# 3# The output from mk/sub.mk 4# base-prefix 5# 6# Output 7# 8# set objs 9# update cleanfiles 10# 11# Generates explicit rules for all objs 12 13objs := 14 15# Disable all builtin rules 16.SUFFIXES: 17 18comp-cflags$(sm) = -std=gnu99 19comp-aflags$(sm) = 20comp-cppflags$(sm) = 21 22ifndef NOWERROR 23comp-cflags$(sm) += -Werror 24endif 25comp-cflags$(sm) += -fdiagnostics-show-option 26 27comp-cflags-warns-high = \ 28 -Wall -Wcast-align \ 29 -Werror-implicit-function-declaration -Wextra -Wfloat-equal \ 30 -Wformat-nonliteral -Wformat-security -Wformat=2 -Winit-self \ 31 -Wmissing-declarations -Wmissing-format-attribute \ 32 -Wmissing-include-dirs -Wmissing-noreturn \ 33 -Wmissing-prototypes -Wnested-externs -Wpointer-arith \ 34 -Wshadow -Wstrict-prototypes -Wswitch-default \ 35 -Wwrite-strings \ 36 -Wno-missing-field-initializers -Wno-format-zero-length 37comp-cflags-warns-medium = \ 38 -Waggregate-return -Wredundant-decls 39comp-cflags-warns-low = \ 40 -Winline \ 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-temp-dep-$2:= $$(comp-dep-$2).tmp 60comp-cmd-file-$2:= $$(dir $2).$$(notdir $2).cmd 61comp-sm-$2 := $(sm) 62 63cleanfiles := $$(cleanfiles) $$(comp-dep-$2) $$(comp-cmd-file-$2) $2 64 65ifeq ($$(filter %.c,$1),$1) 66comp-flags-$2 = $$(filter-out $$(CFLAGS_REMOVE) $$(cflags-remove) \ 67 $$(cflags-remove-$2), \ 68 $$(CFLAGS) $$(CFLAGS_WARNS) \ 69 $$(comp-cflags$$(comp-sm-$2)) $$(cflags$$(comp-sm-$2)) \ 70 $$(cflags-$2)) 71else ifeq ($$(filter %.S,$1),$1) 72comp-flags-$2 = -DASM=1 $$(filter-out $$(AFLAGS_REMOVE) $$(aflags-remove) \ 73 $$(aflags-remove-$2), \ 74 $$(AFLAGS) $$(comp-aflags$$(comp-sm-$2)) \ 75 $$(aflags$$(comp-sm-$2)) $$(aflags-$2)) 76else 77$$(error "Don't know what to do with $1") 78endif 79 80 81comp-flags-$2 += -Wp,-MD,$$(comp-temp-dep-$2) \ 82 $$(filter-out $$(CPPFLAGS_REMOVE) $$(cppflags-remove) \ 83 $$(cppflags-remove-$2), \ 84 $$(nostdinc) $$(CPPFLAGS) \ 85 $$(addprefix -I,$$(incdirs$$(comp-sm-$2))) \ 86 $$(cppflags$$(comp-sm-$2)) $$(cppflags-$2)) 87 88comp-cmd-$2 = $$(CC) $$(comp-flags-$2) -c $$< -o $$@ 89 90-include $$(comp-cmd-file-$2) 91-include $$(comp-dep-$2) 92 93 94$2: $1 FORCE 95# Check if any prerequisites are newer than the target and 96# check if command line has changed 97 $$(if $$(strip $$? $$(filter-out $$(comp-cmd-$2), $$(old-cmd-$2)) \ 98 $$(filter-out $$(old-cmd-$2), $$(comp-cmd-$2))), \ 99 @set -e ;\ 100 mkdir -p $$(dir $2) ;\ 101 echo [$$(comp-sm-$2)] CC $1 ;\ 102 $(cmd-echo) $$(subst \",\\\",$$(comp-cmd-$2)) ;\ 103 $$(comp-cmd-$2) ;\ 104 $(cmd-fixdep) $$(dir $2) < $$(comp-temp-dep-$2) > \ 105 $$(comp-dep-$2) ;\ 106 rm -f $$(comp-temp-dep-$2) ;\ 107 echo "old-cmd-$2 := $$(subst \",\\\",$$(comp-cmd-$2))" > \ 108 $$(comp-cmd-file-$2) ;\ 109 ) 110 111endef 112 113$(foreach f, $(srcs), $(eval $(call \ 114 process_srcs,$(f),$(out-dir)$(base-prefix)$$(basename $f).o))) 115