From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001
From: Craig Jennings <c@cjennings.net>
Date: Sun, 7 Apr 2024 13:41:34 -0500
Subject: new repository

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+  <h1 class="chapter">An Introduction to Makefiles</h1> <p>You need a file called a <em>makefile</em> to tell <code>make</code> what to do. Most often, the makefile tells <code>make</code> how to compile and link a program.  </p> <p>In this chapter, we will discuss a simple makefile that describes how to compile and link a text editor which consists of eight C source files and three header files. The makefile can also tell <code>make</code> how to run miscellaneous commands when explicitly asked (for example, to remove certain files as a clean-up operation). To see a more complex example of a makefile, see <a href="complex-makefile">Complex Makefile</a>. </p> <p>When <code>make</code> recompiles the editor, each changed C source file must be recompiled. If a header file has changed, each C source file that includes the header file must be recompiled to be safe. Each compilation produces an object file corresponding to the source file. Finally, if any source file has been recompiled, all the object files, whether newly made or saved from previous compilations, must be linked together to produce the new executable editor.   </p> <table class="menu" border="0" cellspacing="0"> <tr>
+<td align="left" valign="top">• <a href="rule-introduction" accesskey="1">Rule Introduction</a>
+</td>
+<td> </td>
+<td align="left" valign="top">What a rule looks like. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="simple-makefile" accesskey="2">Simple Makefile</a>
+</td>
+<td> </td>
+<td align="left" valign="top">A simple makefile. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="how-make-works" accesskey="3">How Make Works</a>
+</td>
+<td> </td>
+<td align="left" valign="top">How <code>make</code> processes this makefile. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="variables-simplify" accesskey="4">Variables Simplify</a>
+</td>
+<td> </td>
+<td align="left" valign="top">Variables make makefiles simpler. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="make-deduces" accesskey="5">make Deduces</a>
+</td>
+<td> </td>
+<td align="left" valign="top">Letting <code>make</code> deduce the recipes. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="combine-by-prerequisite" accesskey="6">Combine By Prerequisite</a>
+</td>
+<td> </td>
+<td align="left" valign="top">Another style of makefile. </td>
+</tr> <tr>
+<td align="left" valign="top">• <a href="cleanup" accesskey="7">Cleanup</a>
+</td>
+<td> </td>
+<td align="left" valign="top">Rules for cleaning the directory. </td>
+</tr> </table><div class="_attribution">
+  <p class="_attribution-p">
+    Copyright © 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Free Software Foundation, Inc. <br>Licensed under the GNU Free Documentation License.<br>
+    <a href="https://www.gnu.org/software/make/manual/html_node/Introduction.html" class="_attribution-link">https://www.gnu.org/software/make/manual/html_node/Introduction.html</a>
+  </p>
+</div>
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