172 lines
7.2 KiB
HTML
172 lines
7.2 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
"GNU Free Documentation License".
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development. -->
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>GNU Compiler Collection (GCC) Internals: Require Support</title>
|
|
|
|
<meta name="description" content="GNU Compiler Collection (GCC) Internals: Require Support">
|
|
<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Require Support">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="Test-Directives.html#Test-Directives" rel="up" title="Test Directives">
|
|
<link href="Final-Actions.html#Final-Actions" rel="next" title="Final Actions">
|
|
<link href="Add-Options.html#Add-Options" rel="prev" title="Add Options">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.indentedblock {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style:oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nocodebreak {white-space:nowrap}
|
|
span.nolinebreak {white-space:nowrap}
|
|
span.roman {font-family:serif; font-weight:normal}
|
|
span.sansserif {font-family:sans-serif; font-weight:normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
|
|
<a name="Require-Support"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Final-Actions.html#Final-Actions" accesskey="n" rel="next">Final Actions</a>, Previous: <a href="Add-Options.html#Add-Options" accesskey="p" rel="prev">Add Options</a>, Up: <a href="Test-Directives.html#Test-Directives" accesskey="u" rel="up">Test Directives</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="Variants-of-dg_002drequire_002dsupport"></a>
|
|
<h4 class="subsection">7.2.5 Variants of <code>dg-require-<var>support</var></code></h4>
|
|
|
|
<p>A few of the <code>dg-require</code> directives take arguments.
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>dg-require-iconv <var>codeset</var></code></dt>
|
|
<dd><p>Skip the test if the target does not support iconv. <var>codeset</var> is
|
|
the codeset to convert to.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-profiling <var>profopt</var></code></dt>
|
|
<dd><p>Skip the test if the target does not support profiling with option
|
|
<var>profopt</var>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-visibility <var>vis</var></code></dt>
|
|
<dd><p>Skip the test if the target does not support the <code>visibility</code> attribute.
|
|
If <var>vis</var> is <code>""</code>, support for <code>visibility("hidden")</code> is
|
|
checked, for <code>visibility("<var>vis</var>")</code> otherwise.
|
|
</p></dd>
|
|
</dl>
|
|
|
|
<p>The original <code>dg-require</code> directives were defined before there
|
|
was support for effective-target keywords. The directives that do not
|
|
take arguments could be replaced with effective-target keywords.
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>dg-require-alias ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support the ‘<samp>alias</samp>’ attribute.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-ascii-locale ""</code></dt>
|
|
<dd><p>Skip the test if the host does not support an ASCII locale.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-compat-dfp ""</code></dt>
|
|
<dd><p>Skip this test unless both compilers in a <samp>compat</samp> testsuite
|
|
support decimal floating point.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-cxa-atexit ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support <code>__cxa_atexit</code>.
|
|
This is equivalent to <code>dg-require-effective-target cxa_atexit</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-dll ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support DLL attributes.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-fork ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support <code>fork</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-gc-sections ""</code></dt>
|
|
<dd><p>Skip the test if the target’s linker does not support the
|
|
<code>--gc-sections</code> flags.
|
|
This is equivalent to <code>dg-require-effective-target gc-sections</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-host-local ""</code></dt>
|
|
<dd><p>Skip the test if the host is remote, rather than the same as the build
|
|
system. Some tests are incompatible with DejaGnu’s handling of remote
|
|
hosts, which involves copying the source file to the host and compiling
|
|
it with a relative path and "<code>-o a.out</code>".
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-mkfifo ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support <code>mkfifo</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-named-sections ""</code></dt>
|
|
<dd><p>Skip the test is the target does not support named sections.
|
|
This is equivalent to <code>dg-require-effective-target named_sections</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-weak ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support weak symbols.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dg-require-weak-override ""</code></dt>
|
|
<dd><p>Skip the test if the target does not support overriding weak symbols.
|
|
</p></dd>
|
|
</dl>
|
|
|
|
<hr>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Final-Actions.html#Final-Actions" accesskey="n" rel="next">Final Actions</a>, Previous: <a href="Add-Options.html#Add-Options" accesskey="p" rel="prev">Add Options</a>, Up: <a href="Test-Directives.html#Test-Directives" accesskey="u" rel="up">Test Directives</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|