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diff --git a/share/doc/gdb/Compilation.html b/share/doc/gdb/Compilation.html new file mode 100644 index 0000000..0dbce55 --- /dev/null +++ b/share/doc/gdb/Compilation.html @@ -0,0 +1,122 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Free Software" and "Free Software Needs +Free Documentation", with the Front-Cover Texts being "A GNU Manual," +and with the Back-Cover Texts as in (a) below. + +(a) The FSF's Back-Cover Text is: "You are free to copy and modify +this GNU Manual. Buying copies from GNU Press supports the FSF in +developing GNU and promoting software freedom." --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: Compilation</title> + +<meta name="description" content="Debugging with GDB: Compilation"> +<meta name="keywords" content="Debugging with GDB: Compilation"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Running.html#Running" rel="up" title="Running"> +<link href="Starting.html#Starting" rel="next" title="Starting"> +<link href="Running.html#Running" rel="previous" title="Running"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Compilation"></a> +<div class="header"> +<p> +Next: <a href="Starting.html#Starting" accesskey="n" rel="next">Starting</a>, Up: <a href="Running.html#Running" accesskey="u" rel="up">Running</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Compiling-for-Debugging"></a> +<h3 class="section">4.1 Compiling for Debugging</h3> + +<p>In order to debug a program effectively, you need to generate +debugging information when you compile it. This debugging information +is stored in the object file; it describes the data type of each +variable or function and the correspondence between source line numbers +and addresses in the executable code. +</p> +<p>To request debugging information, specify the ‘<samp>-g</samp>’ option when you run +the compiler. +</p> +<p>Programs that are to be shipped to your customers are compiled with +optimizations, using the ‘<samp>-O</samp>’ compiler option. However, some +compilers are unable to handle the ‘<samp>-g</samp>’ and ‘<samp>-O</samp>’ options +together. Using those compilers, you cannot generate optimized +executables containing debugging information. +</p> +<p><small>GCC</small>, the <small>GNU</small> C/C<tt>++</tt> compiler, supports ‘<samp>-g</samp>’ with or +without ‘<samp>-O</samp>’, making it possible to debug optimized code. We +recommend that you <em>always</em> use ‘<samp>-g</samp>’ whenever you compile a +program. You may think your program is correct, but there is no sense +in pushing your luck. For more information, see <a href="Optimized-Code.html#Optimized-Code">Optimized Code</a>. +</p> +<p>Older versions of the <small>GNU</small> C compiler permitted a variant option +‘<samp><span class="nolinebreak">-gg</span></samp>’<!-- /@w --> for debugging information. <small>GDB</small> no longer supports this +format; if your <small>GNU</small> C compiler has this option, do not use it. +</p> +<p><small>GDB</small> knows about preprocessor macros and can show you their +expansion (see <a href="Macros.html#Macros">Macros</a>). Most compilers do not include information +about preprocessor macros in the debugging information if you specify +the <samp>-g</samp> flag alone. Version 3.1 and later of <small>GCC</small>, +the <small>GNU</small> C compiler, provides macro information if you are using +the DWARF debugging format, and specify the option <samp>-g3</samp>. +</p> +<p>See <a href="http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html#Debugging-Options">Options for Debugging Your Program or GCC</a> in <cite>Using the <small>GNU</small> Compiler Collection (GCC)</cite>, for more +information on <small>GCC</small> options affecting debug information. +</p> +<p>You will have the best debugging experience if you use the latest +version of the DWARF debugging format that your compiler supports. +DWARF is currently the most expressive and best supported debugging +format in <small>GDB</small>. +</p> +<hr> +<div class="header"> +<p> +Next: <a href="Starting.html#Starting" accesskey="n" rel="next">Starting</a>, Up: <a href="Running.html#Running" accesskey="u" rel="up">Running</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |