On Mon, 24 Nov 2003, Noel Yap wrote:
> The usual way to do what you want /is/ to make all a prereq of gzip. I
> don't understand your reasoning as to why this wouldn't work. Can you
> elaborate with an example?
Sure. I've attached a stripped down version of my makefile to the end of
this message. Notice that I get different output depending on whether I
use targets of basic, standard, or emacs. If gzip is specified as a
target on the command line, I want it to execute last no matter what other
targets have been specifed, if any. But gzip should be optional.
- .\\
archive = config-$(shell date +%Y%m%d).tar
emacsarc = emacs-$(archive)
basic = .bash_logout .bash_profile .bashrc .exrc .vimrc
standard = .cvsrc .mailcap .screenrc .slrnrc .wgetrc .ytalkrc
emacs = .emacs elisp
.NOTPARALLEL:
.PHONY: dummy clean
dummy:
@echo "Usage: make <target>"
basic:
tar -rf $(archive) $(basic)
standard: basic emacs
tar -rf $(archive) $(standard)
tar -Af $(archive) $(emacsarc)
rm -f $(emacsarc)
emacs:
tar -rf $(emacsarc) $(emacs)
gzip:
for file in $(archive) $(emacsarc) ; do \
if [ -f $$file ]; then \
gzip $$file ; \
fi ; \
done
clean:
$(RM) $(archive) $(emacsarc)
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