Re: target variable ($@) as prerequisite

[ulugutz]

Oleksandr Gavenko-2 wrote:
> 
> On 27.01.2011 17:04, ulugutz wrote:
>>
>> Ahh ok i get it. Yes in your example it works fine. Maybe it's my bad
>> skill
>> in writing makefiles but it looks different from my stuff. As i create
>> pdf
>> file not only from png but also svg and so on i did not use a pattern (i
>> mean like %.pdf) as a rule. Instead i did something like this :
>>
>> PNG_FILES := $(wildcard *.png)
>> SVG_FILES := $(wildcard *.svg)
>> PDFfrompng_FILES := $(PNG_FILES:.png=.pdf)
>> PDFfromsvg_FILES := $(PNG_FILES:.svg=.pdf)
>>
>> .PHONY: all
>> all: $(PDF_FILES)
>>
>> PDFfrompng_FILES : PNG_FILES
>>       cp $*.png $@
>> ...
>> ...
> Please provide real command for PDFfrompng_FILES.
> Because there is place where I don't understand you.
> 
> I suggest to append these lines to your example to make you need:
> 
> PDF_FILES = $(PDFfrompng_FILES) $(PDFfromsvg_FILES)
> 
> $(PDFfrompng_FILES) : %.pdf: %.png
>       cp $*.png $@
> 
> $(PDFfromsvg_FILES) : %.pdf: %.svg
>       cp $*.svg $@
> 
> and so on for any other file type.
> 

yes the commands are somewhat different for each file types. png are
actually just getting linked (ln -s) but eps (eps2pdf) and svg (inkscape
export as pdf) will be transfromed into pdfs.
now in your example I see something new taget: prerequ : whatisthis?
is will check what is does and come back to you...

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