149 lines
7.0 KiB
HTML
149 lines
7.0 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: Files</title>
|
|
|
|
<meta name="description" content="GNU Compiler Collection (GCC) Internals: Files">
|
|
<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Files">
|
|
<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="Type-Information.html#Type-Information" rel="up" title="Type Information">
|
|
<link href="Invoking-the-garbage-collector.html#Invoking-the-garbage-collector" rel="next" title="Invoking the garbage collector">
|
|
<link href="GGC-Roots.html#GGC-Roots" rel="prev" title="GGC Roots">
|
|
<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="Files"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Invoking-the-garbage-collector.html#Invoking-the-garbage-collector" accesskey="n" rel="next">Invoking the garbage collector</a>, Previous: <a href="GGC-Roots.html#GGC-Roots" accesskey="p" rel="prev">GGC Roots</a>, Up: <a href="Type-Information.html#Type-Information" accesskey="u" rel="up">Type Information</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="Source-Files-Containing-Type-Information"></a>
|
|
<h3 class="section">22.5 Source Files Containing Type Information</h3>
|
|
<a name="index-generated-files"></a>
|
|
<a name="index-files_002c-generated"></a>
|
|
|
|
<p>Whenever you add <code>GTY</code> markers to a source file that previously
|
|
had none, or create a new source file containing <code>GTY</code> markers,
|
|
there are three things you need to do:
|
|
</p>
|
|
<ol>
|
|
<li> You need to add the file to the list of source files the type
|
|
machinery scans. There are four cases:
|
|
|
|
<ol>
|
|
<li> For a back-end file, this is usually done
|
|
automatically; if not, you should add it to <code>target_gtfiles</code> in
|
|
the appropriate port’s entries in <samp>config.gcc</samp>.
|
|
|
|
</li><li> For files shared by all front ends, add the filename to the
|
|
<code>GTFILES</code> variable in <samp>Makefile.in</samp>.
|
|
|
|
</li><li> For files that are part of one front end, add the filename to the
|
|
<code>gtfiles</code> variable defined in the appropriate
|
|
<samp>config-lang.in</samp>.
|
|
Headers should appear before non-headers in this list.
|
|
|
|
</li><li> For files that are part of some but not all front ends, add the
|
|
filename to the <code>gtfiles</code> variable of <em>all</em> the front ends
|
|
that use it.
|
|
</li></ol>
|
|
|
|
</li><li> If the file was a header file, you’ll need to check that it’s included
|
|
in the right place to be visible to the generated files. For a back-end
|
|
header file, this should be done automatically. For a front-end header
|
|
file, it needs to be included by the same file that includes
|
|
<samp>gtype-<var>lang</var>.h</samp>. For other header files, it needs to be
|
|
included in <samp>gtype-desc.c</samp>, which is a generated file, so add it to
|
|
<code>ifiles</code> in <code>open_base_file</code> in <samp>gengtype.c</samp>.
|
|
|
|
<p>For source files that aren’t header files, the machinery will generate a
|
|
header file that should be included in the source file you just changed.
|
|
The file will be called <samp>gt-<var>path</var>.h</samp> where <var>path</var> is the
|
|
pathname relative to the <samp>gcc</samp> directory with slashes replaced by
|
|
<tt>-</tt>, so for example the header file to be included in
|
|
<samp>cp/parser.c</samp> is called <samp>gt-cp-parser.c</samp>. The
|
|
generated header file should be included after everything else in the
|
|
source file. Don’t forget to mention this file as a dependency in the
|
|
<samp>Makefile</samp>!
|
|
</p>
|
|
</li></ol>
|
|
|
|
<p>For language frontends, there is another file that needs to be included
|
|
somewhere. It will be called <samp>gtype-<var>lang</var>.h</samp>, where
|
|
<var>lang</var> is the name of the subdirectory the language is contained in.
|
|
</p>
|
|
<p>Plugins can add additional root tables. Run the <code>gengtype</code>
|
|
utility in plugin mode as <code>gengtype -P pluginout.h <var>source-dir</var>
|
|
<var>file-list</var> <var>plugin*.c</var></code> with your plugin files
|
|
<var>plugin*.c</var> using <code>GTY</code> to generate the <var>pluginout.h</var> file.
|
|
The GCC build tree is needed to be present in that mode.
|
|
</p>
|
|
|
|
<hr>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Invoking-the-garbage-collector.html#Invoking-the-garbage-collector" accesskey="n" rel="next">Invoking the garbage collector</a>, Previous: <a href="GGC-Roots.html#GGC-Roots" accesskey="p" rel="prev">GGC Roots</a>, Up: <a href="Type-Information.html#Type-Information" accesskey="u" rel="up">Type Information</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>
|