47 lines
1.0 KiB
Makefile
47 lines
1.0 KiB
Makefile
define ACTION.COPY
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@mkdir -p $(@D)
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cp $< $@
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endef
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define ACTION.TOUCH
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@mkdir -p $(@D)
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touch $@
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endef
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# This macros is to make targets dependent on variables
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# It writes variable value into temporary file varname.tmp,
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# then it compares temporary file with the varname.dep file.
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# If there is a difference between them, varname.dep will be updated
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# and the target which depends on it will be rebuilt.
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# Example:
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# target: $(call depv,varname)
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DEPV_DIR:=$(BUILD_DIR)/depv
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define depv
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$(shell mkdir -p $(DEPV_DIR))
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$(shell echo "$($1)" > $(DEPV_DIR)/$1.tmp)
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$(shell diff >/dev/null 2>&1 $(DEPV_DIR)/$1.tmp $(DEPV_DIR)/$1.dep \
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|| mv $(DEPV_DIR)/$1.tmp $(DEPV_DIR)/$1.dep)
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$(DEPV_DIR)/$1.dep
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endef
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define NEWLINE
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endef
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$(BUILD_DIR)/%/.dir:
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mkdir -p $(@D)
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@touch $@
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assert-variable=$(if $($1),,$(error Variable $1 need to be defined))
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find-files=$(shell test -e $1 && find $1 -type f 2> /dev/null)
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# uppercase conversion routine
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# usage: UPPER_VAR = $(call uc,$(VAR))
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uc = $(shell echo $(1) | tr a-z A-Z)
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comma:=,
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space:=
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space+=
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