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POMakefile pattern rule either ignores phony rule or spontaneously deletes output file
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  1. POMakefile pattern rule either ignores phony rule or spontaneously deletes output file
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    copied!<p>I'm trying to write a makefile to produce several output files for each of several sources, using pattern rules.</p> <p>I have the following <code>Makefile</code> (GNU Make 3.8.1):</p> <pre><code>all : foo.all bar.all %.all : %.pdf %.svg @echo Made $* %.pdf : touch $@ %.svg : touch $@ .PHONY: foo.all bar.all </code></pre> <p>Since <code>*.all</code> do not represent real output files, I tried marking them as <a href="https://stackoverflow.com/questions/2145590/what-is-the-purpose-of-phony-in-a-makefile"><code>.PHONY</code></a>. However, running <code>make</code> then doesn't work:</p> <pre><code>$ ls Makefile $ make make: Nothing to be done for `all'. </code></pre> <p>According to <code>make -d</code>:</p> <pre><code> No implicit rule found for `all'. Considering target file `foo.all'. File `foo.all' does not exist. Finished prerequisites of target file `foo.all'. Must remake target `foo.all'. Successfully remade target file `foo.all'. Considering target file `bar.all'. File `bar.all' does not exist. Finished prerequisites of target file `bar.all'. Must remake target `bar.all'. Successfully remade target file `bar.all'. Finished prerequisites of target file `all'. Must remake target `all'. Successfully remade target file `all'. make: Nothing to be done for `all'. </code></pre> <p>which seems to be pretending to run the <code>%.all</code> rules, but skipping the bodies.</p> <p>But with the <code>.PHONY</code> line commented out, Make runs the targets, but then spontaneously decides to delete the output files:</p> <pre><code>$ make touch foo.pdf touch foo.svg Made foo touch bar.pdf touch bar.svg Made bar rm foo.pdf foo.svg bar.pdf bar.svg </code></pre> <p>According to <code>make -d</code>, it says:</p> <pre><code>Removing intermediate files... </code></pre> <h1>Minimal example</h1> <p>A minimal example giving anomalous behavior:</p> <pre><code>%.all: %.out @echo Made $* %.out: touch $@ </code></pre> <p>I expect running <code>make somefile.all</code> to cause it to create the file <code>somefile.out</code>, but it gets deleted:</p> <pre><code>$ make somefile.all touch somefile.out Made somefile rm somefile.out </code></pre>
 

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