Re: VPATH/vpath and Pattern Rules

[Paul Smith]

On Sat, 2012-01-14 at 16:20 +0100, Michael Ludwig wrote:
> Now that's useful! Will keep this snippet handy from now on:
> 
>       @echo ==   $$@ $@
>       @echo ==   $$%% $%
>       @echo ==   $$^< $<
>       @echo ==   $$? $?
>       @echo ==   $$^^ $^
>       @echo ==   $$+ $+
>       @echo ==   $$^| $|
>       @echo ==   $$* $*
> 
> Can I define it as a function? To invoke it like: $(echoautovars)

Sure, but you really should quote these to protect them from the shell:

        define echoautovars
        echo ==   '$$@ $@'
        echo ==   '$$%% $%'
        echo ==   '$$^< $<'
        echo ==   '$$? $?'
        echo ==   '$$^^ $^'
        echo ==   '$$+ $+'
        echo ==   '$$^| $|'
        echo ==   '$$* $*'
        endef
        
        foo:
                @$(echoautovars)

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