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116 lines
5.6 KiB
HTML
116 lines
5.6 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>Invoking G++ (Using the GNU Compiler Collection (GCC))</title>
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<meta name="description" content="Invoking G++ (Using the GNU Compiler Collection (GCC))">
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<meta name="keywords" content="Invoking G++ (Using the GNU Compiler Collection (GCC))">
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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="Invoking-GCC.html#Invoking-GCC" rel="up" title="Invoking GCC">
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<link href="C-Dialect-Options.html#C-Dialect-Options" rel="next" title="C Dialect Options">
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<link href="Overall-Options.html#Overall-Options" rel="prev" title="Overall Options">
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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="Invoking-G_002b_002b"></a>
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<div class="header">
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<p>
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Next: <a href="C-Dialect-Options.html#C-Dialect-Options" accesskey="n" rel="next">C Dialect Options</a>, Previous: <a href="Overall-Options.html#Overall-Options" accesskey="p" rel="prev">Overall Options</a>, Up: <a href="Invoking-GCC.html#Invoking-GCC" accesskey="u" rel="up">Invoking GCC</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="Compiling-C_002b_002b-Programs"></a>
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<h3 class="section">3.3 Compiling C++ Programs</h3>
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<a name="index-suffixes-for-C_002b_002b-source"></a>
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<a name="index-C_002b_002b-source-file-suffixes"></a>
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<p>C++ source files conventionally use one of the suffixes ‘<samp>.C</samp>’,
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‘<samp>.cc</samp>’, ‘<samp>.cpp</samp>’, ‘<samp>.CPP</samp>’, ‘<samp>.c++</samp>’, ‘<samp>.cp</samp>’, or
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‘<samp>.cxx</samp>’; C++ header files often use ‘<samp>.hh</samp>’, ‘<samp>.hpp</samp>’,
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‘<samp>.H</samp>’, or (for shared template code) ‘<samp>.tcc</samp>’; and
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preprocessed C++ files use the suffix ‘<samp>.ii</samp>’. GCC recognizes
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files with these names and compiles them as C++ programs even if you
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call the compiler the same way as for compiling C programs (usually
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with the name <code>gcc</code>).
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</p>
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<a name="index-g_002b_002b"></a>
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<a name="index-c_002b_002b"></a>
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<p>However, the use of <code>gcc</code> does not add the C++ library.
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<code>g++</code> is a program that calls GCC and automatically specifies linking
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against the C++ library. It treats ‘<samp>.c</samp>’,
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‘<samp>.h</samp>’ and ‘<samp>.i</samp>’ files as C++ source files instead of C source
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files unless <samp>-x</samp> is used. This program is also useful when
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precompiling a C header file with a ‘<samp>.h</samp>’ extension for use in C++
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compilations. On many systems, <code>g++</code> is also installed with
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the name <code>c++</code>.
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</p>
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<a name="index-invoking-g_002b_002b"></a>
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<p>When you compile C++ programs, you may specify many of the same
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command-line options that you use for compiling programs in any
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language; or command-line options meaningful for C and related
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languages; or options that are meaningful only for C++ programs.
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See <a href="C-Dialect-Options.html#C-Dialect-Options">Options Controlling C Dialect</a>, for
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explanations of options for languages related to C.
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See <a href="C_002b_002b-Dialect-Options.html#C_002b_002b-Dialect-Options">Options Controlling C++ Dialect</a>, for
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explanations of options that are meaningful only for C++ programs.
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</p>
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</body>
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</html>
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