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Kbuild.include is a placeholder for definitions originally present in both the top-level Makefile and scripts/Makefile.build. There were a slight difference in the filechk definition, so the most videly used version was kept and usr/Makefile was adopted for this syntax. Signed-off-by: Sam Ravnborg <[email protected]> ---
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Sam Ravnborg
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Jul 25, 2005
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| #### | ||
| # kbuild: Generic definitions | ||
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| # Convinient variables | ||
| comma := , | ||
| empty := | ||
| space := $(empty) $(empty) | ||
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| ### | ||
| # The temporary file to save gcc -MD generated dependencies must not | ||
| # contain a comma | ||
| depfile = $(subst $(comma),_,$(@D)/.$(@F).d) | ||
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| ### | ||
| # filechk is used to check if the content of a generated file is updated. | ||
| # Sample usage: | ||
| # define filechk_sample | ||
| # echo $KERNELRELEASE | ||
| # endef | ||
| # version.h : Makefile | ||
| # $(call filechk,sample) | ||
| # The rule defined shall write to stdout the content of the new file. | ||
| # The existing file will be compared with the new one. | ||
| # - If no file exist it is created | ||
| # - If the content differ the new file is used | ||
| # - If they are equal no change, and no timestamp update | ||
| # - stdin is piped in from the first prerequisite ($<) so one has | ||
| # to specify a valid file as first prerequisite (often the kbuild file) | ||
| define filechk | ||
| $(Q)set -e; \ | ||
| echo ' CHK $@'; \ | ||
| mkdir -p $(dir $@); \ | ||
| $(filechk_$(1)) < $< > [email protected]; \ | ||
| if [ -r $@ ] && cmp -s $@ [email protected]; then \ | ||
| rm -f [email protected]; \ | ||
| else \ | ||
| echo ' UPD $@'; \ | ||
| mv -f [email protected] $@; \ | ||
| fi | ||
| endef | ||
|
|
||
| ### | ||
| # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= | ||
| # Usage: | ||
| # $(Q)$(MAKE) $(build)=dir | ||
| build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj | ||
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| # If quiet is set, only print short version of command | ||
| cmd = @$(if $($(quiet)cmd_$(1)),\ | ||
| echo ' $(subst ','\'',$($(quiet)cmd_$(1)))' &&) $(cmd_$(1)) | ||
|
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| ### | ||
| # 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.txt for more info | ||
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| ifneq ($(KBUILD_NOCMDDEP),1) | ||
| # Check if both arguments has same arguments. Result in empty string if equal | ||
| # User may override this check using make KBUILD_NOCMDDEP=1 | ||
| arg-check = $(strip $(filter-out $(1), $(2)) $(filter-out $(2), $(1)) ) | ||
| endif | ||
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||
| # echo command. Short version is $(quiet) equals quiet, otherwise full command | ||
| echo-cmd = $(if $($(quiet)cmd_$(1)), \ | ||
| echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) | ||
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| # function to only execute the passed command if necessary | ||
| # >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file | ||
| # note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars | ||
| # | ||
| if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| @set -e; \ | ||
| $(echo-cmd) \ | ||
| $(cmd_$(1)); \ | ||
| echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd) | ||
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| # execute the command and also postprocess generated .d dependencies | ||
| # file | ||
| if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\ | ||
| $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| @set -e; \ | ||
| $(echo-cmd) \ | ||
| $(cmd_$(1)); \ | ||
| scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \ | ||
| rm -f $(depfile); \ | ||
| mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd) | ||
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| # Usage: $(call if_changed_rule,foo) | ||
| # will check if $(cmd_foo) changed, or any of the prequisites changed, | ||
| # and if so will execute $(rule_foo) | ||
| if_changed_rule = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\ | ||
| @set -e; \ | ||
| $(rule_$(1))) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,13 +1,3 @@ | ||
| # =========================================================================== | ||
| # kbuild: Generic definitions | ||
| # =========================================================================== | ||
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| # Standard vars | ||
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| comma := , | ||
| empty := | ||
| space := $(empty) $(empty) | ||
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| # Backward compatibility - to be removed... | ||
| extra-y += $(EXTRA_TARGETS) | ||
| # Figure out what we need to build from the various variables | ||
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@@ -84,10 +74,6 @@ multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) | |
| subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) | ||
| obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) | ||
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| # The temporary file to save gcc -MD generated dependencies must not | ||
| # contain a comma | ||
| depfile = $(subst $(comma),_,$(@D)/.$(@F).d) | ||
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| # These flags are needed for modversions and compiling, so we define them here | ||
| # already | ||
| # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will | ||
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@@ -179,84 +165,4 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
| quiet_cmd_gzip = GZIP $@ | ||
| cmd_gzip = gzip -f -9 < $< > $@ | ||
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| # =========================================================================== | ||
| # Generic stuff | ||
| # =========================================================================== | ||
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| ifneq ($(KBUILD_NOCMDDEP),1) | ||
| # Check if both arguments has same arguments. Result in empty string if equal | ||
| # User may override this check using make KBUILD_NOCMDDEP=1 | ||
| arg-check = $(strip $(filter-out $(1), $(2)) $(filter-out $(2), $(1)) ) | ||
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| endif | ||
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| # echo command. Short version is $(quiet) equals quiet, otherwise full command | ||
| echo-cmd = $(if $($(quiet)cmd_$(1)), \ | ||
| echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) | ||
|
|
||
| # function to only execute the passed command if necessary | ||
| # >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file | ||
| # note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars | ||
| # | ||
| if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| @set -e; \ | ||
| $(echo-cmd) \ | ||
| $(cmd_$(1)); \ | ||
| echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd) | ||
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||
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| # execute the command and also postprocess generated .d dependencies | ||
| # file | ||
|
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| if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\ | ||
| $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \ | ||
| @set -e; \ | ||
| $(echo-cmd) \ | ||
| $(cmd_$(1)); \ | ||
| scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \ | ||
| rm -f $(depfile); \ | ||
| mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd) | ||
|
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| # Usage: $(call if_changed_rule,foo) | ||
| # will check if $(cmd_foo) changed, or any of the prequisites changed, | ||
| # and if so will execute $(rule_foo) | ||
|
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||
| if_changed_rule = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\ | ||
| @set -e; \ | ||
| $(rule_$(1))) | ||
|
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| # If quiet is set, only print short version of command | ||
|
|
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| cmd = @$(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))' &&) $(cmd_$(1)) | ||
|
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| # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj= | ||
| # Usage: | ||
| # $(Q)$(MAKE) $(build)=dir | ||
| build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj | ||
|
|
||
| # filechk is used to check if the content of a generated file is updated. | ||
| # Sample usage: | ||
| # define filechk_sample | ||
| # echo $KERNELRELEASE | ||
| # endef | ||
| # version.h : Makefile | ||
| # $(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 | ||
| $(Q)set -e; \ | ||
| echo ' CHK $@'; \ | ||
| mkdir -p $(dir $@); \ | ||
| $(filechk_$(1)) $(2) > [email protected]; \ | ||
| if [ -r $@ ] && cmp -s $@ [email protected]; then \ | ||
| rm -f [email protected]; \ | ||
| else \ | ||
| echo ' UPD $@'; \ | ||
| mv -f [email protected] $@; \ | ||
| fi | ||
| endef | ||
|
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||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -5,7 +5,7 @@ | |
| .PHONY: __modinst | ||
| __modinst: | ||
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| include scripts/Makefile.lib | ||
| include scripts/Kbuild.include | ||
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| # | ||
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