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Re: target variable ($@) as prerequisite

From: Oleksandr Gavenko
Subject: Re: target variable ($@) as prerequisite
Date: Thu, 27 Jan 2011 18:11:25 +0200
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20101207 Thunderbird/3.1.7

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)

      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.

С уважением, Александр Гавенко.

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