| # Input |
| # |
| # subdirs tells the subdirectories to descend |
| # |
| # Output |
| # |
| # set srcs |
| # set cflags-$(oname) cflags-remove-$(oname) |
| # aflags-$(oname) aflags-remove-$(oname) |
| # cppflags-$(oname) cppflags-remove-$(oname) |
| # incdirs-$(oname) |
| # incdirs-lib$(libname) [if libname is defined] |
| # cppflags-lib$(libname) [if libname is defined] |
| # cflags-lib$(libname) [if libname is defined] |
| # for each file found, oname is the name of the object file for corresponding |
| # source file |
| |
| srcs := |
| |
| 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 |
| sub-dir := $1 |
| include $1/sub.mk |
| sub-subdirs := $$(addprefix $1/,$$(subdirs-y)) |
| incdirs$(sm) := $(incdirs$(sm)) $$(addprefix $1/,$$(global-incdirs-y)) |
| thissubdir-incdirs := $$(addprefix $1/,$$(incdirs-y)) |
| ifneq ($$(libname),) |
| incdirs-lib$$(libname) := $$(incdirs-lib$$(libname)) $$(addprefix $1/,$$(incdirs-lib-y)) |
| cflags-lib$$(libname) := $$(cflags-lib$$(libname)) $$(cflags-lib-y) |
| cppflags-lib$$(libname) := $$(cppflags-lib$$(libname)) $$(cppflags-lib-y) |
| endif |
| |
| # Process files in current directory |
| $$(foreach s, $$(srcs-y), $$(eval $$(call process-subdir-srcs-y,$$(s)))) |
| # Clear flags used when processing current directory |
| srcs-y := |
| cflags-y := |
| cflags-lib-y := |
| cppflags-y := |
| cppflags-lib-y := |
| aflags-y := |
| cflags-remove-y := |
| subdirs-y := |
| global-incdirs-y := |
| incdirs-lib-y := |
| incdirs-y := |
| |
| # Process subdirectories in current directory |
| $$(foreach sd, $$(sub-subdirs), $$(eval $$(call process-subdir,$$(sd)))) |
| endef #process-subdir |
| |
| # Top subdirectories |
| $(foreach sd, $(subdirs), $(eval $(call process-subdir,$(sd)))) |