1<html lang="en"> 2<head> 3<title>Pragmas - Using the GNU Compiler Collection (GCC)</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Using the GNU Compiler Collection (GCC)"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="C-Extensions.html#C-Extensions" title="C Extensions"> 9<link rel="prev" href="Target-Format-Checks.html#Target-Format-Checks" title="Target Format Checks"> 10<link rel="next" href="Unnamed-Fields.html#Unnamed-Fields" title="Unnamed Fields"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<!-- 13Copyright (C) 1988-2013 Free Software Foundation, Inc. 14 15Permission is granted to copy, distribute and/or modify this document 16under the terms of the GNU Free Documentation License, Version 1.3 or 17any later version published by the Free Software Foundation; with the 18Invariant Sections being ``Funding Free Software'', the Front-Cover 19Texts being (a) (see below), and with the Back-Cover Texts being (b) 20(see below). A copy of the license is included in the section entitled 21``GNU Free Documentation License''. 22 23(a) The FSF's Front-Cover Text is: 24 25 A GNU Manual 26 27(b) The FSF's Back-Cover Text is: 28 29 You have freedom to copy and modify this GNU Manual, like GNU 30 software. Copies published by the Free Software Foundation raise 31 funds for GNU development.--> 32<meta http-equiv="Content-Style-Type" content="text/css"> 33<style type="text/css"><!-- 34 pre.display { font-family:inherit } 35 pre.format { font-family:inherit } 36 pre.smalldisplay { font-family:inherit; font-size:smaller } 37 pre.smallformat { font-family:inherit; font-size:smaller } 38 pre.smallexample { font-size:smaller } 39 pre.smalllisp { font-size:smaller } 40 span.sc { font-variant:small-caps } 41 span.roman { font-family:serif; font-weight:normal; } 42 span.sansserif { font-family:sans-serif; font-weight:normal; } 43--></style> 44<link rel="stylesheet" type="text/css" href="../cs.css"> 45</head> 46<body> 47<div class="node"> 48<a name="Pragmas"></a> 49<p> 50Next: <a rel="next" accesskey="n" href="Unnamed-Fields.html#Unnamed-Fields">Unnamed Fields</a>, 51Previous: <a rel="previous" accesskey="p" href="Target-Format-Checks.html#Target-Format-Checks">Target Format Checks</a>, 52Up: <a rel="up" accesskey="u" href="C-Extensions.html#C-Extensions">C Extensions</a> 53<hr> 54</div> 55 56<h3 class="section">6.58 Pragmas Accepted by GCC</h3> 57 58<p><a name="index-pragmas-3458"></a><a name="index-g_t_0040code_007b_0023pragma_007d-3459"></a> 59GCC supports several types of pragmas, primarily in order to compile 60code originally written for other compilers. Note that in general 61we do not recommend the use of pragmas; See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, 62for further explanation. 63 64<ul class="menu"> 65<li><a accesskey="1" href="ARM-Pragmas.html#ARM-Pragmas">ARM Pragmas</a> 66<li><a accesskey="2" href="M32C-Pragmas.html#M32C-Pragmas">M32C Pragmas</a> 67<li><a accesskey="3" href="MeP-Pragmas.html#MeP-Pragmas">MeP Pragmas</a> 68<li><a accesskey="4" href="RS_002f6000-and-PowerPC-Pragmas.html#RS_002f6000-and-PowerPC-Pragmas">RS/6000 and PowerPC Pragmas</a> 69<li><a accesskey="5" href="Darwin-Pragmas.html#Darwin-Pragmas">Darwin Pragmas</a> 70<li><a accesskey="6" href="Solaris-Pragmas.html#Solaris-Pragmas">Solaris Pragmas</a> 71<li><a accesskey="7" href="Symbol_002dRenaming-Pragmas.html#Symbol_002dRenaming-Pragmas">Symbol-Renaming Pragmas</a> 72<li><a accesskey="8" href="Structure_002dPacking-Pragmas.html#Structure_002dPacking-Pragmas">Structure-Packing Pragmas</a> 73<li><a accesskey="9" href="Weak-Pragmas.html#Weak-Pragmas">Weak Pragmas</a> 74<li><a href="Diagnostic-Pragmas.html#Diagnostic-Pragmas">Diagnostic Pragmas</a> 75<li><a href="Visibility-Pragmas.html#Visibility-Pragmas">Visibility Pragmas</a> 76<li><a href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas">Push/Pop Macro Pragmas</a> 77<li><a href="Function-Specific-Option-Pragmas.html#Function-Specific-Option-Pragmas">Function Specific Option Pragmas</a> 78</ul> 79 80 </body></html> 81 82