| # Input |
| # |
| # subdirs tells the subdirectories to descend |
| # |
| # Output |
| # |
| # set srcs gen-srcs |
| # set cflags-$(oname) cflags-remove-$(oname) |
| # aflags-$(oname) aflags-remove-$(oname) |
| # cppflags-$(oname) cppflags-remove-$(oname) |
| # incdirs-$(oname) |
| # incdirs-lib$(libname)-$(sm) [if libname is defined] |
| # cppflags-lib$(libname)-$(sm) [if libname is defined] |
| # cflags-lib$(libname)-$(sm) [if libname is defined] |
| # for each file found, oname is the name of the object file for corresponding |
| # source file |
| |
| srcs := |
| gen-srcs := |
| asm-defines-files := |
| |
| define process-subdir-srcs-y |
| ifeq ($$(sub-dir),.) |
| srcs += $1 |
| oname := $(out-dir)/$(base-prefix)$(basename $1).o |
| else |
| ifneq ($(filter /%,$(1)),) |
| # $1 is an absolute path - start with "/" |
| srcs += $1 |
| oname := $(out-dir)/$(base-prefix)$(basename $1).o |
| else |
| srcs += $(sub-dir)/$1 |
| oname := $(out-dir)/$(base-prefix)$(basename $$(sub-dir)/$1).o |
| endif |
| endif |
| cflags-$$(oname) := $$(cflags-y) $$(cflags-$(1)-y) |
| cflags-remove-$$(oname) := $$(cflags-remove-y) \ |
| $$(cflags-remove-$(1)-y) |
| cppflags-$$(oname) := $$(cppflags-y) $$(cppflags-$(1)-y) |
| cppflags-remove-$$(oname) := $$(cppflags-remove-y) \ |
| $$(cppflags-remove-$(1)-y) |
| aflags-$$(oname) := $$(aflags-y) $$(aflags-$(1)-y) |
| aflags-remove-$$(oname) := $$(aflags-remove-y) \ |
| $$(aflags-remove-$(1)-y) |
| incdirs-$$(oname) := $$(thissubdir-incdirs) $$(addprefix $(sub-dir)/,$$(incdirs-$(1)-y)) |
| # Clear local filename specific variables to avoid accidental reuse |
| # in another subdirectory |
| cflags-$(1)-y := |
| cflags-remove-$(1)-y := |
| cflags-lib-y := |
| cppflags-$(1)-y := |
| cppflags-remove-$(1)-y := |
| cppflags-lib-y := |
| aflags-$(1)-y := |
| aflags-remove-$(1)-y := |
| incdirs-$(1)-y := |
| fname := |
| oname := |
| endef #process-subdir-srcs-y |
| |
| define process-subdir-gensrcs-helper |
| # $1 gensrc-y element |
| # $2 full path and name of generated source file |
| # $3 full path and name of object file compiled from source file |
| # $4 full path to out directory |
| # $5 y if $2 must be generated before $(sm) starts building (e.g., .h file) |
| |
| gen-srcs += $2 |
| cleanfiles += $2 |
| oname := $3 |
| |
| FORCE-GENSRC$(sm): $(if $(filter y,$5),$2,) |
| |
| $$(addprefix $4,$$(produce-additional-$1)): $2 |
| |
| subdir-$2 := $$(sub-dir) |
| recipe-$2 := $$(recipe-$1) |
| $2: $$(depends-$1) |
| @$(cmd-echo-silent) ' GEN $2' |
| $(q)mkdir -p $4 |
| $(q)$$(recipe-$2) |
| |
| cflags-$$(oname) := $$(cflags-y) $$(cflags-$(1)-y) |
| cflags-remove-$$(oname) := $$(cflags-remove-y) \ |
| $$(cflags-remove-$(1)-y) |
| cppflags-$$(oname) := $$(cppflags-y) $$(cppflags-$(1)-y) |
| cppflags-remove-$$(oname) := $$(cppflags-remove-y) \ |
| $$(cppflags-remove-$(1)-y) |
| aflags-$$(oname) := $$(aflags-y) $$(aflags-$(1)-y) |
| aflags-remove-$$(oname) := $$(aflags-remove-y) \ |
| $$(aflags-remove-$(1)-y) |
| incdirs-$$(oname) := $$(thissubdir-incdirs) $$(addprefix $(sub-dir)/,$$(incdirs-$(1)-y)) |
| # Clear local filename specific variables to avoid accidental reuse |
| # in another subdirectory |
| cflags-$(1)-y := |
| cflags-remove-$(1)-y := |
| cflags-lib-y := |
| cppflags-$(1)-y := |
| cppflags-remove-$(1)-y := |
| cppflags-lib-y := |
| aflags-$(1)-y := |
| aflags-remove-$(1)-y := |
| incdirs-$(1)-y := |
| fname := |
| oname := |
| |
| endef #process-subdir-gensrcs-helper |
| |
| define process-subdir-gensrcs-y |
| $$(eval $$(call process-subdir-gensrcs-helper,$1,$(sub-dir-out)/$$(produce-$1),$(sub-dir-out)/$(basename $(produce-$1)).o,$(sub-dir-out),$(force-gensrc-$1))) |
| endef #process-subdir-gensrcs-y |
| |
| define process-subdir-asm-defines-y |
| asm-defines-files += $(sub-dir)/$1 |
| endef #process-subdir-asm-defines-y |
| |
| define process-subdir |
| sub-dir := $1 |
| ifeq ($1,.) |
| sub-dir-out := $(out-dir)/$(base-prefix) |
| else |
| sub-dir-out := $(out-dir)/$(base-prefix)$1 |
| endif |
| |
| include $1/sub.mk |
| sub-subdirs := $$(addprefix $1/,$$(subdirs-y)) |
| incdirs$(sm) := $(incdirs$(sm)) $$(addprefix $1/,$$(global-incdirs-y)) |
| thissubdir-incdirs := $(out-dir)/$(base-prefix)$1 $$(addprefix $1/,$$(incdirs-y)) |
| ifneq ($$(libname),) |
| incdirs-lib$$(libname)-$$(sm) := $$(incdirs-lib$$(libname)-$$(sm)) $$(addprefix $1/,$$(incdirs-lib-y)) |
| cflags-lib$$(libname)-$$(sm) := $$(cflags-lib$$(libname)-$$(sm)) $$(cflags-lib-y) |
| cppflags-lib$$(libname)-$$(sm) := $$(cppflags-lib$$(libname)-$$(sm)) $$(cppflags-lib-y) |
| endif |
| |
| # Process files in current directory |
| $$(foreach g, $$(gensrcs-y), $$(eval $$(call process-subdir-gensrcs-y,$$(g)))) |
| $$(foreach s, $$(srcs-y), $$(eval $$(call process-subdir-srcs-y,$$(s)))) |
| $$(foreach a, $$(asm-defines-y), $$(eval $$(call process-subdir-asm-defines-y,$$(a)))) |
| # Clear flags used when processing current directory |
| srcs-y := |
| cflags-y := |
| cflags-lib-y := |
| cppflags-y := |
| cppflags-lib-y := |
| aflags-y := |
| cflags-remove-y := |
| subdirs-y := |
| global-incdirs-y := |
| incdirs-lib-y := |
| incdirs-y := |
| gensrcs-y := |
| this-out-dir := |
| asm-defines-y := |
| |
| # Process subdirectories in current directory |
| $$(foreach sd, $$(sub-subdirs), $$(eval $$(call process-subdir,$$(sd)))) |
| endef #process-subdir |
| |
| # Top subdirectories |
| $(foreach sd, $(subdirs), $(eval $(call process-subdir,$(sd)))) |
