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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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2440387431
Infrastructure for building independent shared library targets. Based on work created by the PaX Team. Signed-off-by: Emese Revfy <re.emese@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Michal Marek <mmarek@suse.com>
93 lines
2.9 KiB
Text
93 lines
2.9 KiB
Text
# ==========================================================================
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# Cleaning up
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# ==========================================================================
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src := $(obj)
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PHONY := __clean
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__clean:
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include scripts/Kbuild.include
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# The filename Kbuild has precedence over Makefile
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kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
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include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
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# Figure out what we need to build from the various variables
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# ==========================================================================
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__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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subdir-y += $(__subdir-y)
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__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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subdir-m += $(__subdir-m)
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__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
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subdir- += $(__subdir-)
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# Subdirectories we need to descend into
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subdir-ym := $(sort $(subdir-y) $(subdir-m))
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subdir-ymn := $(sort $(subdir-ym) $(subdir-))
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# Add subdir path
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subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
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# build a list of files to remove, usually relative to the current
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# directory
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__clean-files := $(extra-y) $(extra-m) $(extra-) \
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$(always) $(targets) $(clean-files) \
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$(host-progs) \
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$(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
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$(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
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$(hostcxxlibs-y) $(hostcxxlibs-m)
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__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
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# clean-files is given relative to the current directory, unless it
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# starts with $(objtree)/ (which means "./", so do not add "./" unless
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# you want to delete a file from the toplevel object directory).
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__clean-files := $(wildcard \
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$(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
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$(filter $(objtree)/%, $(__clean-files)))
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# same as clean-files
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__clean-dirs := $(wildcard \
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$(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
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$(filter $(objtree)/%, $(clean-dirs)))
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# ==========================================================================
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quiet_cmd_clean = CLEAN $(obj)
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cmd_clean = rm -f $(__clean-files)
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quiet_cmd_cleandir = CLEAN $(__clean-dirs)
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cmd_cleandir = rm -rf $(__clean-dirs)
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__clean: $(subdir-ymn)
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ifneq ($(strip $(__clean-files)),)
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+$(call cmd,clean)
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endif
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ifneq ($(strip $(__clean-dirs)),)
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+$(call cmd,cleandir)
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endif
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@:
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# ===========================================================================
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# Generic stuff
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# ===========================================================================
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# Descending
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# ---------------------------------------------------------------------------
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PHONY += $(subdir-ymn)
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$(subdir-ymn):
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$(Q)$(MAKE) $(clean)=$@
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable se we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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