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87 lines
3.9 KiB
HTML
87 lines
3.9 KiB
HTML
4 years ago
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<html lang="en">
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<head>
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<title>Header Dirs - GNU Compiler Collection (GCC) Internals</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="GNU Compiler Collection (GCC) Internals">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="prev" href="Collect2.html#Collect2" title="Collect2">
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<link rel="next" href="Type-Information.html#Type-Information" title="Type Information">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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Copyright (C) 1988-2015 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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--></style>
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</head>
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<body>
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<div class="node">
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<a name="Header-Dirs"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Type-Information.html#Type-Information">Type Information</a>,
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Previous: <a rel="previous" accesskey="p" href="Collect2.html#Collect2">Collect2</a>,
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Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a>
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<hr>
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</div>
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<h2 class="chapter">21 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><span class="file">$(tooldir)/include</span></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><code>GPLUSPLUS_INCLUDE_DIR</code> means the same thing for native and cross. It
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is where <samp><span class="command">g++</span></samp> 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><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><span class="file">/usr/local/include</span></samp>. This is where local additions to a packaged
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system should place header files.
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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><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><span class="file">/usr/include</span></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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<!-- Copyright (C) 2002-2015 Free Software Foundation, Inc. -->
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<!-- This is part of the GCC manual. -->
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<!-- For copying conditions, see the file gcc.texi. -->
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</body></html>
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