I have the following Makefile to extract tar files. However, it will
always extract all the tar files. I could add touch $@ after tar xzvf
$<. But I prefer not to do so. Because I don't want change the date of
the extracted package.
I'm wondering if there is any walkaround to not to update these rules
as long as the targets exist.
.PHONY: all
TAR_GZ_FILES:=$(wildcard *.tar.gz)
DIRS:=$(patsubst %.tar.gz,%,$(TAR_GZ_FILES))
all: $(DIRS)
$(DIRS): %: %.tar.gz
tar xzvf $<
--
Regards,
Peng
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