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<h1 class="unnumbered"> Index of Concepts: U &ndash; Y </h1>
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<tr><td></td><th align="left">Index Entry</th><th align="left"> Section</th></tr>
<tr><td colspan="3"> <hr></td></tr>
<tr><th><a name="INDEX5_0">U</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="make_9.html#IDX435">undefined variables, warning message</a></td><td valign="top"><a href="make_9.html#SEC112">9.7 Summary of Options</a></td></tr>
<tr><td></td><td valign="top"><a href="make_11.html#SEC131">updating archive symbol directories</a></td><td valign="top"><a href="make_11.html#SEC131">11.2.1 Updating Archive Symbol Directories</a></td></tr>
<tr><td></td><td valign="top"><a href="make_3.html#SEC20">updating makefiles</a></td><td valign="top"><a href="make_3.html#SEC20">3.7 How Makefiles Are Remade</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#SEC98">user defined functions</a></td><td valign="top"><a href="make_8.html#SEC98">8.6 The <code>call</code> Function</a></td></tr>
<tr><td colspan="3"> <hr></td></tr>
<tr><th><a name="INDEX5_1">V</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC74">value</a></td><td valign="top"><a href="make_6.html#SEC74">6. How to Use Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC80">value, how a variable gets it</a></td><td valign="top"><a href="make_6.html#SEC80">6.4 How Variables Get Their Values</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC74">variable</a></td><td valign="top"><a href="make_6.html#SEC74">6. How to Use Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_3.html#IDX34">variable definition</a></td><td valign="top"><a href="make_3.html#SEC14">3.1 What Makefiles Contain</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#SEC59">variable references in commands</a></td><td valign="top"><a href="make_5.html#SEC59">5.1.2 Using Variables in Commands</a></td></tr>
<tr><td></td><td valign="top"><a href="make_2.html#SEC9">variables</a></td><td valign="top"><a href="make_2.html#SEC9">2.4 Variables Make Makefiles Simpler</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC79">variables, &lsquo;<samp>$</samp>&rsquo; in name</a></td><td valign="top"><a href="make_6.html#SEC79">6.3.2 Computed Variable Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#SEC121">variables, and implicit rule</a></td><td valign="top"><a href="make_10.html#SEC121">10.5.3 Automatic Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC82">variables, appending to</a></td><td valign="top"><a href="make_6.html#SEC82">6.6 Appending More Text to Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#SEC121">variables, automatic</a></td><td valign="top"><a href="make_10.html#SEC121">10.5.3 Automatic Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_9.html#SEC110">variables, command line</a></td><td valign="top"><a href="make_9.html#SEC110">9.5 Overriding Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#IDX195">variables, command line, and recursion</a></td><td valign="top"><a href="make_5.html#SEC70">5.7.3 Communicating Options to a Sub-<code>make</code></a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC79">variables, computed names</a></td><td valign="top"><a href="make_6.html#SEC79">6.3.2 Computed Variable Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#IDX253">variables, conditional assignment</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC84">variables, defining verbatim</a></td><td valign="top"><a href="make_6.html#SEC84">6.8 Defining Variables Verbatim</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#SEC69">variables, environment</a></td><td valign="top"><a href="make_5.html#SEC69">5.7.2 Communicating Variables to a Sub-<code>make</code></a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC85">variables, environment</a></td><td valign="top"><a href="make_6.html#SEC85">6.9 Variables from the Environment</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#SEC69">variables, exporting</a></td><td valign="top"><a href="make_5.html#SEC69">5.7.2 Communicating Variables to a Sub-<code>make</code></a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#SEC102">variables, flavor of</a></td><td valign="top"><a href="make_8.html#SEC102">8.10 The <code>flavor</code> Function</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC76">variables, flavors</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC80">variables, how they get their values</a></td><td valign="top"><a href="make_6.html#SEC80">6.4 How Variables Get Their Values</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC75">variables, how to reference</a></td><td valign="top"><a href="make_6.html#SEC75">6.1 Basics of Variable References</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#IDX243">variables, loops in expansion</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC78">variables, modified reference</a></td><td valign="top"><a href="make_6.html#SEC78">6.3.1 Substitution References</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC79">variables, nested references</a></td><td valign="top"><a href="make_6.html#SEC79">6.3.2 Computed Variable Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#SEC101">variables, origin of</a></td><td valign="top"><a href="make_8.html#SEC101">8.9 The <code>origin</code> Function</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC83">variables, overriding</a></td><td valign="top"><a href="make_6.html#SEC83">6.7 The <code>override</code> Directive</a></td></tr>
<tr><td></td><td valign="top"><a href="make_9.html#SEC110">variables, overriding with arguments</a></td><td valign="top"><a href="make_9.html#SEC110">9.5 Overriding Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC87">variables, pattern-specific</a></td><td valign="top"><a href="make_6.html#SEC87">6.11 Pattern-specific Variable Values</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC76">variables, recursively expanded</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC81">variables, setting</a></td><td valign="top"><a href="make_6.html#SEC81">6.5 Setting Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#IDX245">variables, simply expanded</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#IDX251">variables, spaces in values</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC78">variables, substituting suffix in</a></td><td valign="top"><a href="make_6.html#SEC78">6.3.1 Substitution References</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC78">variables, substitution reference</a></td><td valign="top"><a href="make_6.html#SEC78">6.3.1 Substitution References</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC86">variables, target-specific</a></td><td valign="top"><a href="make_6.html#SEC86">6.10 Target-specific Variable Values</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#SEC99">variables, unexpanded value</a></td><td valign="top"><a href="make_8.html#SEC99">8.7 The <code>value</code> Function</a></td></tr>
<tr><td></td><td valign="top"><a href="make_9.html#IDX434">variables, warning for undefined</a></td><td valign="top"><a href="make_9.html#SEC112">9.7 Summary of Options</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC51">varying prerequisites</a></td><td valign="top"><a href="make_4.html#SEC51">4.12 Static Pattern Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#SEC84">verbatim variable definition</a></td><td valign="top"><a href="make_6.html#SEC84">6.8 Defining Variables Verbatim</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC38">vpath</a></td><td valign="top"><a href="make_4.html#SEC38">4.5 Searching Directories for Prerequisites</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC43"><code>VPATH</code>, and implicit rules</a></td><td valign="top"><a href="make_4.html#SEC43">4.5.5 Directory Search and Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC44"><code>VPATH</code>, and link libraries</a></td><td valign="top"><a href="make_4.html#SEC44">4.5.6 Directory Search for Link Libraries</a></td></tr>
<tr><td colspan="3"> <hr></td></tr>
<tr><th><a name="INDEX5_2">W</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX331">warnings, printing</a></td><td valign="top"><a href="make_8.html#SEC104">8.12 Functions That Control Make</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX480"><code>weave</code></a></td><td valign="top"><a href="make_10.html#SEC115">10.2 Catalogue of Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX538"><code>weave</code></a></td><td valign="top"><a href="make_10.html#SEC116">10.3 Variables Used by Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX477">Web, rule to run</a></td><td valign="top"><a href="make_10.html#SEC115">10.2 Catalogue of Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_9.html#IDX366">what if</a></td><td valign="top"><a href="make_9.html#SEC108">9.3 Instead of Executing the Commands</a></td></tr>
<tr><td></td><td valign="top"><a href="make_6.html#IDX250">whitespace, in variable values</a></td><td valign="top"><a href="make_6.html#SEC76">6.2 The Two Flavors of Variables</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX265">whitespace, stripping</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC34">wildcard</a></td><td valign="top"><a href="make_4.html#SEC34">4.4 Using Wildcard Characters in File Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC36">wildcard pitfalls</a></td><td valign="top"><a href="make_4.html#SEC36">4.4.2 Pitfalls of Using Wildcards</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX317">wildcard, function</a></td><td valign="top"><a href="make_8.html#SEC95">8.3 Functions for File Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_11.html#IDX629">wildcard, in archive member</a></td><td valign="top"><a href="make_11.html#SEC129">11.1 Archive Members as Targets</a></td></tr>
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<tr><td></td><td valign="top"><a href="make_4.html#IDX87">wildcards and MS-DOS/MS-Windows backslashes</a></td><td valign="top"><a href="make_4.html#SEC36">4.4.2 Pitfalls of Using Wildcards</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#SEC63">Windows, choosing a shell in</a></td><td valign="top"><a href="make_5.html#SEC63">Choosing a Shell in DOS and Windows</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX284">word, selecting a</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX292">words, extracting first</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX294">words, extracting last</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX274">words, filtering</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX277">words, filtering out</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX290">words, finding number</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#SEC97">words, iterating over</a></td><td valign="top"><a href="make_8.html#SEC97">8.5 The <code>foreach</code> Function</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX315">words, joining lists</a></td><td valign="top"><a href="make_8.html#SEC95">8.3 Functions for File Names</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX282">words, removing duplicates</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_8.html#IDX287">words, selecting lists of</a></td><td valign="top"><a href="make_8.html#SEC94">8.2 Functions for String Substitution and Analysis</a></td></tr>
<tr><td></td><td valign="top"><a href="make_5.html#SEC56">writing rule commands</a></td><td valign="top"><a href="make_5.html#SEC56">5. Writing the Commands in Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_4.html#SEC30">writing rules</a></td><td valign="top"><a href="make_4.html#SEC30">4. Writing Rules</a></td></tr>
<tr><td colspan="3"> <hr></td></tr>
<tr><th><a name="INDEX5_3">Y</a></th><td></td><td></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX467"><code>yacc</code></a></td><td valign="top"><a href="make_10.html#SEC115">10.2 Catalogue of Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX524"><code>yacc</code></a></td><td valign="top"><a href="make_10.html#SEC116">10.3 Variables Used by Implicit Rules</a></td></tr>
<tr><td></td><td valign="top"><a href="make_10.html#IDX468">Yacc, rule to run</a></td><td valign="top"><a href="make_10.html#SEC115">10.2 Catalogue of Implicit Rules</a></td></tr>
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