1# Input 2# 3# subdirs tells the subdirectories to descend 4# 5# Output 6# 7# set srcs gen-srcs 8# set cflags-$(oname) cflags-remove-$(oname) 9# aflags-$(oname) aflags-remove-$(oname) 10# cppflags-$(oname) cppflags-remove-$(oname) 11# incdirs-$(oname) 12# incdirs-lib$(libname)-$(sm) [if libname is defined] 13# cppflags-lib$(libname)-$(sm) [if libname is defined] 14# cflags-lib$(libname)-$(sm) [if libname is defined] 15# for each file found, oname is the name of the object file for corresponding 16# source file 17 18srcs := 19gen-srcs := 20asm-defines-files := 21 22define process-subdir-srcs-y 23ifeq ($$(sub-dir),.) 24srcs += $1 25oname := $(out-dir)/$(base-prefix)$(basename $1).o 26else 27ifneq ($(filter /%,$(1)),) 28# $1 is an absolute path - start with "/" 29srcs += $1 30oname := $(out-dir)/$(base-prefix)$(basename $1).o 31else 32srcs += $(sub-dir)/$1 33oname := $(out-dir)/$(base-prefix)$(basename $$(sub-dir)/$1).o 34endif 35endif 36cflags-$$(oname) := $$(cflags-y) $$(cflags-$(1)-y) 37cflags-remove-$$(oname) := $$(cflags-remove-y) \ 38 $$(cflags-remove-$(1)-y) 39cppflags-$$(oname) := $$(cppflags-y) $$(cppflags-$(1)-y) 40cppflags-remove-$$(oname) := $$(cppflags-remove-y) \ 41 $$(cppflags-remove-$(1)-y) 42aflags-$$(oname) := $$(aflags-y) $$(aflags-$(1)-y) 43aflags-remove-$$(oname) := $$(aflags-remove-y) \ 44 $$(aflags-remove-$(1)-y) 45incdirs-$$(oname) := $$(thissubdir-incdirs) $$(addprefix $(sub-dir)/,$$(incdirs-$(1)-y)) 46# Clear local filename specific variables to avoid accidental reuse 47# in another subdirectory 48cflags-$(1)-y := 49cflags-remove-$(1)-y := 50cflags-lib-y := 51cppflags-$(1)-y := 52cppflags-remove-$(1)-y := 53cppflags-lib-y := 54aflags-$(1)-y := 55aflags-remove-$(1)-y := 56incdirs-$(1)-y := 57fname := 58oname := 59endef #process-subdir-srcs-y 60 61define process-subdir-gensrcs-helper 62# $1 gensrc-y element 63# $2 full path and name of generated source file 64# $3 full path and name of object file compiled from source file 65# $4 full path to out directory 66 67gen-srcs += $2 68oname := $3 69 70FORCE-GENSRC$(sm): $2 71 72$$(addprefix $4,$$(produce-additional-$1)): $2 73 74subdir-$2 := $$(sub-dir) 75recipe-$2 := $$(recipe-$1) 76$2: $$(depends-$1) 77 @$(cmd-echo-silent) ' GEN $2' 78 $(q)mkdir -p $4 79 $(q)$$(recipe-$2) 80 81cflags-$$(oname) := $$(cflags-y) $$(cflags-$(1)-y) 82cflags-remove-$$(oname) := $$(cflags-remove-y) \ 83 $$(cflags-remove-$(1)-y) 84cppflags-$$(oname) := $$(cppflags-y) $$(cppflags-$(1)-y) 85cppflags-remove-$$(oname) := $$(cppflags-remove-y) \ 86 $$(cppflags-remove-$(1)-y) 87aflags-$$(oname) := $$(aflags-y) $$(aflags-$(1)-y) 88aflags-remove-$$(oname) := $$(aflags-remove-y) \ 89 $$(aflags-remove-$(1)-y) 90incdirs-$$(oname) := $$(thissubdir-incdirs) $$(addprefix $(sub-dir)/,$$(incdirs-$(1)-y)) 91# Clear local filename specific variables to avoid accidental reuse 92# in another subdirectory 93cflags-$(1)-y := 94cflags-remove-$(1)-y := 95cflags-lib-y := 96cppflags-$(1)-y := 97cppflags-remove-$(1)-y := 98cppflags-lib-y := 99aflags-$(1)-y := 100aflags-remove-$(1)-y := 101incdirs-$(1)-y := 102fname := 103oname := 104 105endef #process-subdir-gensrcs-helper 106 107define process-subdir-gensrcs-y 108$$(eval $$(call process-subdir-gensrcs-helper,$1,$(sub-dir-out)/$$(produce-$1),$(sub-dir-out)/$(basename $(produce-$1)).o,$(sub-dir-out))) 109endef #process-subdir-gensrcs-y 110 111define process-subdir-asm-defines-y 112asm-defines-files += $(sub-dir)/$1 113endef #process-subdir-asm-defines-y 114 115define process-subdir 116sub-dir := $1 117ifeq ($1,.) 118sub-dir-out := $(out-dir)/$(base-prefix) 119else 120sub-dir-out := $(out-dir)/$(base-prefix)$1 121endif 122 123include $1/sub.mk 124sub-subdirs := $$(addprefix $1/,$$(subdirs-y)) 125incdirs$(sm) := $(incdirs$(sm)) $$(addprefix $1/,$$(global-incdirs-y)) 126thissubdir-incdirs := $(out-dir)/$(base-prefix)$1 $$(addprefix $1/,$$(incdirs-y)) 127ifneq ($$(libname),) 128incdirs-lib$$(libname)-$$(sm) := $$(incdirs-lib$$(libname)-$$(sm)) $$(addprefix $1/,$$(incdirs-lib-y)) 129cflags-lib$$(libname)-$$(sm) := $$(cflags-lib$$(libname)-$$(sm)) $$(cflags-lib-y) 130cppflags-lib$$(libname)-$$(sm) := $$(cppflags-lib$$(libname)-$$(sm)) $$(cppflags-lib-y) 131endif 132 133# Process files in current directory 134$$(foreach g, $$(gensrcs-y), $$(eval $$(call process-subdir-gensrcs-y,$$(g)))) 135$$(foreach s, $$(srcs-y), $$(eval $$(call process-subdir-srcs-y,$$(s)))) 136$$(foreach a, $$(asm-defines-y), $$(eval $$(call process-subdir-asm-defines-y,$$(a)))) 137# Clear flags used when processing current directory 138srcs-y := 139cflags-y := 140cflags-lib-y := 141cppflags-y := 142cppflags-lib-y := 143aflags-y := 144cflags-remove-y := 145subdirs-y := 146global-incdirs-y := 147incdirs-lib-y := 148incdirs-y := 149gensrcs-y := 150this-out-dir := 151asm-defines-y := 152 153# Process subdirectories in current directory 154$$(foreach sd, $$(sub-subdirs), $$(eval $$(call process-subdir,$$(sd)))) 155endef #process-subdir 156 157# Top subdirectories 158$(foreach sd, $(subdirs), $(eval $(call process-subdir,$(sd)))) 159