Commit ad71fa99 authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Tom Rini add a new script to refactor tools

This commit adds scripts/ which will
be used in the next commit to convert makefiles
under tools/ directory to Kbuild style.

Notice this script, scripts/
is temporary.

When switching over to real Kbuild,
it will be replaced with scripts/ of Linux Kernel.
Signed-off-by: default avatarMasahiro Yamada <>
parent ea531e3a
......@@ -7,15 +7,23 @@ include $(TOPDIR)/
LIB := $(obj)built-in.o
LIBGCC = $(obj)libgcc.o
subdir-y :=
obj-dirs :=
include Makefile
# Do not include host rules unless needed
ifneq ($(hostprogs-y)$(hostprogs-m),)
include $(SRCTREE)/scripts/
# Going forward use the following
obj-y := $(sort $(obj-y))
extra-y := $(sort $(extra-y))
always := $(sort $(always))
lib-y := $(sort $(lib-y))
subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(patsubst %/,%,$(filter %/, $(obj-y)))
obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
subdir-obj-y := $(filter %/built-in.o, $(obj-y))
subdir-obj-y := $(addprefix $(obj),$(subdir-obj-y))
......@@ -25,7 +33,8 @@ SRCS += $(wildcard $(obj-y:.o=.c) $(obj-y:.o=.S) $(lib-y:.o=.c) \
OBJS := $(addprefix $(obj),$(obj-y))
# $(obj-dirs) is a list of directories that contain object files
obj-dirs := $(dir $(OBJS))
obj-dirs += $(dir $(OBJS))
# Create directories for object files if directory does not exist
# Needed when obj-y := dir/file.o syntax is used
......@@ -33,7 +42,7 @@ _dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d)))
LGOBJS := $(addprefix $(obj),$(sort $(lib-y)))
all: $(LIB) $(addprefix $(obj),$(extra-y))
all: $(LIB) $(addprefix $(obj),$(extra-y) $(always)) $(subdir-y)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
......@@ -48,7 +57,9 @@ endif
ifneq ($(subdir-obj-y),)
# Descending
$(subdir-obj-y): $(subdir-y)
ifneq ($(subdir-y),)
$(subdir-y): FORCE
$(MAKE) -C $@ -f $(TOPDIR)/scripts/
__hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
# C code
# Executables compiled from a single .c file
host-csingle := $(foreach m,$(__hostprogs),$(if $($(m)-objs),,$(m)))
# C executables linked based on several .o files
host-cmulti := $(foreach m,$(__hostprogs),$(if $($(m)-objs),$(m)))
# Object (.o) files compiled from .c files
host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
# output directory for programs/.o files
# hostprogs-y := tools/build may have been specified. Retrieve directory
host-objdirs := $(foreach f,$(__hostprogs), $(if $(dir $(f)),$(dir $(f))))
# directory of .o files from prog-objs notation
host-objdirs += $(foreach f,$(host-cmulti), \
$(foreach m,$($(f)-objs), \
$(if $(dir $(m)),$(dir $(m)))))
host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
__hostprogs := $(addprefix $(obj),$(__hostprogs))
host-csingle := $(addprefix $(obj),$(host-csingle))
host-cmulti := $(addprefix $(obj),$(host-cmulti))
host-cobjs := $(addprefix $(obj),$(host-cobjs))
host-objdirs := $(addprefix $(obj),$(host-objdirs))
obj-dirs += $(host-objdirs)
# Handle options to gcc. Support building with separate output directory
_hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
# Find all -I options and call addtree
flags = $(foreach o,$($(1)),$(if $(filter -I%,$(o)),$(call addtree,$(o)),$(o)))
ifeq ($(OBJTREE),$(SRCTREE))
__hostc_flags = $(_hostc_flags)
__hostc_flags = -I$(obj) $(call flags,_hostc_flags)
hostc_flags = $(__hostc_flags)
# Compile programs on the host
$(host-csingle): $(obj)%: %.c
$(host-cmulti): $(obj)%: $(host-cobjs)
$(HOSTCC) $(HOSTLDFLAGS) -o $@ $(addprefix $(obj),$($(@F)-objs)) $(HOSTLOADLIBES_$(@F))
$(host-cobjs): $(obj)%.o: %.c
targets += $(host-csingle) $(host-cmulti) $(host-cobjs)
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