1<html lang="en"> 2<head> 3<title>Visibility 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="Pragmas.html#Pragmas" title="Pragmas"> 9<link rel="prev" href="Diagnostic-Pragmas.html#Diagnostic-Pragmas" title="Diagnostic Pragmas"> 10<link rel="next" href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas" title="Push/Pop Macro Pragmas"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<!-- 13Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 141998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 152010 Free Software Foundation, Inc. 16 17Permission is granted to copy, distribute and/or modify this document 18under the terms of the GNU Free Documentation License, Version 1.3 or 19any later version published by the Free Software Foundation; with the 20Invariant Sections being ``Funding Free Software'', the Front-Cover 21Texts being (a) (see below), and with the Back-Cover Texts being (b) 22(see below). A copy of the license is included in the section entitled 23``GNU Free Documentation License''. 24 25(a) The FSF's Front-Cover Text is: 26 27 A GNU Manual 28 29(b) The FSF's Back-Cover Text is: 30 31 You have freedom to copy and modify this GNU Manual, like GNU 32 software. Copies published by the Free Software Foundation raise 33 funds for GNU development.--> 34<meta http-equiv="Content-Style-Type" content="text/css"> 35<style type="text/css"><!-- 36 pre.display { font-family:inherit } 37 pre.format { font-family:inherit } 38 pre.smalldisplay { font-family:inherit; font-size:smaller } 39 pre.smallformat { font-family:inherit; font-size:smaller } 40 pre.smallexample { font-size:smaller } 41 pre.smalllisp { font-size:smaller } 42 span.sc { font-variant:small-caps } 43 span.roman { font-family:serif; font-weight:normal; } 44 span.sansserif { font-family:sans-serif; font-weight:normal; } 45--></style> 46<link rel="stylesheet" type="text/css" href="../cs.css"> 47</head> 48<body> 49<div class="node"> 50<a name="Visibility-Pragmas"></a> 51<p> 52Next: <a rel="next" accesskey="n" href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas">Push/Pop Macro Pragmas</a>, 53Previous: <a rel="previous" accesskey="p" href="Diagnostic-Pragmas.html#Diagnostic-Pragmas">Diagnostic Pragmas</a>, 54Up: <a rel="up" accesskey="u" href="Pragmas.html#Pragmas">Pragmas</a> 55<hr> 56</div> 57 58<h4 class="subsection">6.56.11 Visibility Pragmas</h4> 59 60 <dl> 61<dt><code>#pragma GCC visibility push(</code><var>visibility</var><code>)</code><dt><code>#pragma GCC visibility pop</code><dd><a name="index-pragma_002c-visibility-3237"></a> 62This pragma allows the user to set the visibility for multiple 63declarations without having to give each a visibility attribute 64See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, for more information about visibility and 65the attribute syntax. 66 67 <p>In C++, ‘<samp><span class="samp">#pragma GCC visibility</span></samp>’ affects only namespace-scope 68declarations. Class members and template specializations are not 69affected; if you want to override the visibility for a particular 70member or instantiation, you must use an attribute. 71 72</dl> 73 74 </body></html> 75 76