kbuild: error out if targets prefixed with '__' are directly run

# Comments in this file are targeted only to the developer, do not

# expect to learn how to build the kernel reading this file.

$(if $(filter __%, $(MAKECMDGOALS)), \

	$(error targets prefixed with '__' are only for internal use))

# That's our default target when none is given on the command line

PHONY := _all

_all:

PHONY := __all

__all:

# We are using a recursive build, so we need to do a little thinking

# to get the ordering right.

ifeq ($(need-sub-make),1)

PHONY += $(MAKECMDGOALS) sub-make

PHONY += $(MAKECMDGOALS) __sub-make

$(filter-out _all sub-make $(this-makefile), $(MAKECMDGOALS)) _all: sub-make

$(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make

	@:

# Invoke a second make in the output directory, passing relevant variables

sub-make:

__sub-make:

	$(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS)

endif # need-sub-make

PHONY += $(MAKECMDGOALS) __build_one_by_one

$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one

$(MAKECMDGOALS): __build_one_by_one

	@:

__build_one_by_one:

# targets and others. In general all targets except *config targets.

# If building an external module we do not care about the all: rule

# but instead _all depend on modules

# but instead __all depend on modules

PHONY += all

ifeq ($(KBUILD_EXTMOD),)

_all: all

__all: all

else

_all: modules

__all: modules

endif

# Decide whether to build built-in, modular, or both.

# in addition to whatever we do anyway.

# Just "make" or "make all" shall build modules as well

ifneq ($(filter all _all modules nsdeps,$(MAKECMDGOALS)),)

ifneq ($(filter all modules nsdeps,$(MAKECMDGOALS)),)

  KBUILD_MODULES := 1

endif