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110 lines
4.8 KiB
HTML
110 lines
4.8 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Header Dirs (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="Header Dirs (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="Header Dirs (GNU Compiler Collection (GCC) Internals)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="index.html#Top" rel="up" title="Top">
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<link href="Type-Information.html#Type-Information" rel="next" title="Type Information">
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<link href="Collect2.html#Collect2" rel="prev" title="Collect2">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Header-Dirs"></a>
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<div class="header">
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<p>
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Next: <a href="Type-Information.html#Type-Information" accesskey="n" rel="next">Type Information</a>, Previous: <a href="Collect2.html#Collect2" accesskey="p" rel="prev">Collect2</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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>
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</div>
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<hr>
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<a name="Standard-Header-File-Directories"></a>
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<h2 class="chapter">22 Standard Header File Directories</h2>
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<p><code>GCC_INCLUDE_DIR</code> means the same thing for native and cross. It is
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where GCC stores its private include files, and also where GCC
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stores the fixed include files. A cross compiled GCC runs
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<code>fixincludes</code> on the header files in <samp>$(tooldir)/include</samp>.
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(If the cross compilation header files need to be fixed, they must be
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installed before GCC is built. If the cross compilation header files
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are already suitable for GCC, nothing special need be done).
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</p>
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<p><code>GPLUSPLUS_INCLUDE_DIR</code> means the same thing for native and cross. It
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is where <code>g++</code> looks first for header files. The C++ library
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installs only target independent header files in that directory.
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</p>
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<p><code>LOCAL_INCLUDE_DIR</code> is used only by native compilers. GCC
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doesn’t install anything there. It is normally
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<samp>/usr/local/include</samp>. This is where local additions to a packaged
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system should place header files.
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</p>
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<p><code>CROSS_INCLUDE_DIR</code> is used only by cross compilers. GCC
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doesn’t install anything there.
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</p>
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<p><code>TOOL_INCLUDE_DIR</code> is used for both native and cross compilers. It
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is the place for other packages to install header files that GCC will
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use. For a cross-compiler, this is the equivalent of
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<samp>/usr/include</samp>. When you build a cross-compiler,
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<code>fixincludes</code> processes any header files in this directory.
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</p>
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</body>
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</html>
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