0 "ˆl–Ü4ý()¨‰P@ŠÛ‚À…LZ7ÿË ƒh¹ÀÈ0 ˆÌË „¿ÀÈ(¬# SPDX-License-Identifier: GPL-2.0 #### # kbuild: Generic definitions # Convenient variables comma := , quote := " squote := ' empty := space := $(empty) $(empty) space_escape := _-_SPACE_-_ pound := \# ### # Comparison macros. # Usage: $(call test-lt, $(CONFIG_LLD_VERSION), 150000) # # Use $(intcmp ...) if supported. (Make >= 4.4) # Otherwise, fall back to the 'test' shell command. ifeq ($(intcmp 1,0,,,y),y) test-ge = $(intcmp $(strip $1)0, $(strip $2)0,,y,y) test-gt = $(intcmp $(strip $1)0, $(strip $2)0,,,y) else test-ge = $(shell test $(strip $1)0 -ge $(strip $2)0 && echo y) test-gt = $(shell test $(strip $1)0 -gt $(strip $2)0 && echo y) endif test-le = $(call test-ge, $2, $1) test-lt = $(call test-gt, $2, $1) ### # Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o dot-target = $(dir $@).$(notdir $@) ### # Name of target with a '.tmp_' as filename prefix. foo/bar.o => foo/.tmp_bar.o tmp-target = $(dir $@).tmp_$(notdir $@) ### # The temporary file to save gcc -MMD generated dependencies must not # contain a comma depfile = $(subst $(comma),_,$(dot-target).d) ### # filename of target with directory and extension stripped basetarget = $(basename $(notdir $@)) ### # real prerequisites without phony targets real-prereqs = $(filter-out $(PHONY), $^) ### # Escape single quote for use in echo statements escsq = $(subst $(squote),'\$(squote)',$1) ### # Quote a string to pass it to C files. foo => '"foo"' stringify = $(squote)$(quote)$1$(quote)$(squote) ### # The path to Kbuild or Makefile. Kbuild has precedence over Makefile. kbuild-file = $(or $(wildcard $(src)/Kbuild),$(src)/Makefile) ### # Easy method for doing a status message kecho := : quiet_kecho := echo silent_kecho := : kecho := $($(quiet)kecho) ### # filechk is used to check if the content of a generated file is updated. # Sample usage: # # filechk_sample = echo $(KERNELRELEASE) # version.h: FORCE # $(call filechk,sample) # # The rule defined shall write to stdout the content of the new file. # The existing file will be compared with the new one. # - If no file exist it is created # - If the content differ the new file is used # - If they are equal no change, and no timestamp update define filechk $(check-FORCE) $(Q)set -e; \ mkdir -p $(dir $@); \ trap "rm -f $(dot-target).tmp" EXIT; \ { $(filechk_$(1)); } > $(dot-target).tmp; \ if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then \ $(kecho) ' UPD $@'; \ mv -f $(dot-target).tmp $@; \ fi endef ### # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= # Usage: # $(Q)$(MAKE) $(build)=dir build := -f $(srctree)/scripts/Makefile.build obj ### # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.dtbinst obj= # Usage: # $(Q)$(MAKE) $(dtbinst)=dir dtbinst := -f $(srctree)/scripts/Makefile.dtbinst obj ### # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj= # Usage: # $(Q)$(MAKE) $(clean)=dir clean := -f $(srctree)/scripts/Makefile.clean obj # echo command. # Short version is used, if $(quiet) equals `quiet_', otherwise full one. echo-cmd = $(if $($(quiet)cmd_$(1)),\ echo ' $(call escsq,$($(quiet)cmd_$(1)))$(echo-why)';) # sink stdout for 'make -s' redirect := quiet_redirect := silent_redirect := exec >/dev/null; # printing commands cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(cmd_$(1)) ### # if_changed - execute command if any prerequisite is newer than # target, or command line has changed # if_changed_dep - as if_changed, but uses fixdep to reveal dependencies # including used config symbols # if_changed_rule - as if_changed but execute rule instead # See Documentation/kbuild/makefiles.rst for more info ifneq ($(KBUILD_NOCMDDEP),1) # Check if both commands are the same including their order. Result is empty # string if equal. User may override this check using make KBUILD_NOCMDDEP=1 cmd-check = $(filter-out $(subst $(space),$(space_escape),$(strip $(cmd_$@))), \ $(