codeblocks-ep/help/html/programmerHelp/make/Rule-Example.html at master · maifeeulasad/codeblocks-ep · GitHub

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Node:<a name="Rule%20Example">Rule Example</a>,
Next:<a rel="next" accesskey="n" href="Rule-Syntax.html#Rule%20Syntax">Rule Syntax</a>,
Previous:<a rel="previous" accesskey="p" href="Rules.html#Rules">Rules</a>,
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<h3 class="section">Rule Example</h3>

   <p>Here is an example of a rule:

<pre class="example">     foo.o : foo.c defs.h       # module for twiddling the frobs
             cc -c -g foo.c
     </pre>

   <p>Its target is <code>foo.o</code> and its prerequisites are <code>foo.c</code> and
<code>defs.h</code>.  It has one command, which is <code>cc -c -g foo.c</code>.
The command line starts with a tab to identify it as a command.

   <p>This rule says two things:

     <ul>
<li>How to decide whether <code>foo.o</code> is out of date: it is out of date
if it does not exist, or if either <code>foo.c</code> or <code>defs.h</code> is
more recent than it.

     <li>How to update the file <code>foo.o</code>: by running <code>cc</code> as stated.
The command does not explicitly mention <code>defs.h</code>, but we presume
that <code>foo.c</code> includes it, and that that is why <code>defs.h</code> was
added to the prerequisites.
</ul>

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