Re: Define a complete rule via autoconf (quoting issue, AC_SUBST)

[Steven R. Loomis]

Daniel Leidert wrote:
> Hi,
>
> I want to place a rule in several Makefiles. So I thought about putting
>
> @DESKTOP_DATA_RULE@
>
> into every Makefile.am and define the rule via configure.ac. However, I
> can't get it to work. The rule is:
>
> $(desktop_DATA): $(desktop_in_files:.desktop.in=.desktop)
>         @list='$<'; for p in $$list; do \
>            if test -f "$$p" ; then \
>                f=`echo "$$p" | sed 
> 's/.desktop$$//;$(transform);s/$$/.desktop/'`; \
>                if ! test -f "$$f" ; then \
>                    $(LN_S) "$$p" "$$f" ; \
>                    echo "$(LN_S) '$$p' '$$f'" ; \
>                fi ; \
>            fi ; \
>        done
>
> How can I connect this with AC_SUBST? I get errors and warnings with
> everything I do. So how do I have to quote/escape the rule/characters in
> the rule to get the desired result? Is there maybe some m4 macro to get
> a "verbatim" output?
>
> Thanks and regards, Daniel
>
>   

Daniel,
Unless this rule is dynamically calculated by configure, you might be 
better off putting it into a file and simply including it from several 
other makefiles.

-steven