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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"><html><head><title>The SQLite Amalgamation</title><style type="text/css">body { margin: auto; font-family: "Verdana" "sans-serif"; padding: 8px 1%;}a { color: #45735f }a:visited { color: #734559 }.logo { position:absolute; margin:3px; }.tagline { float:right; text-align:right; font-style:italic; width:240px; margin:12px; margin-top:58px;}.toolbar { font-variant: small-caps; text-align: center; line-height: 1.6em; margin: 0; padding:1px 8px;}.toolbar a { color: white; text-decoration: none; padding: 6px 12px; }.toolbar a:visited { color: white; }.toolbar a:hover { color: #80a796; background: white; }.content { margin: 5%; }.content dt { font-weight:bold; }.content dd { margin-bottom: 25px; margin-left:20%; }.content ul { padding:0px; padding-left: 15px; margin:0px; }/* rounded corners */.se { background: url(images/se.png) 100% 100% no-repeat #80a796}.sw { background: url(images/sw.png) 0% 100% no-repeat }.ne { background: url(images/ne.png) 100% 0% no-repeat }.nw { background: url(images/nw.png) 0% 0% no-repeat }</style><meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head><body><div><!-- container div to satisfy validator --><a href="index.html"><img class="logo" src="images/SQLite.gif" alt="SQLite Logo" border="0"></a><div><!-- IE hack to prevent disappearing logo--></div><div class="tagline">Small. Fast. Reliable.<br>Choose any three.</div><table width=100% style="clear:both"><tr><td> <div class="se"><div class="sw"><div class="ne"><div class="nw"> <div class="toolbar"> <a href="about.html">About</a> <a href="sitemap.html">Sitemap</a> <a href="docs.html">Documentation</a> <a href="download.html">Download</a> <a href="copyright.html">License</a> <a href="news.html">News</a> <a href="http://www.sqlite.org/cvstrac/index">Developers</a> <a href="support.html">Support</a> </div></div></div></div></div></td></tr></table> <h2>The SQLite Amalgamation</h2><p>The core SQLite library consists of about 74 files of C code(as of version 3.5.5) in the core with 9 additional filesin the FTS3 extension.Most of these are "source" files in the sense that they are stored in the configuration management system and are maintained directly. But 6 of the core C files are generated automatically during the compilation process. Of the 83 code files, 64 are C code and 19 are C header files.</p><p>The standard makefiles for SQLite have a target for buildingan object we call the "amalgamation". The amalgamation is a single C code file, named "sqlite3.c",that contains all C code for the core SQLite library and the FTS3 extension.This file contains about 73K lines of code (51K if you omit blank lines and comments) and is nearly 2.7MiB in size.</p><p>The amalgamation contains everything you need to integrate SQLite into a larger project. Just copy the amalgamation into your source directory and compile it along with the other C code files in your project.You may also want to make use of the "sqlite3.h" header file that defines the programming API for SQLite. The sqlite3.h header file is available separately. The sqlite3.h file is also contained within the amalgamation, inthe first couple of thousand lines. So if you have a copy of sqlite3.c but cannot seem to locate sqlite3.h, you can always regenerate the sqlite3.h by copying and pasting from the amalgamation.</p><p>In addition to making SQLite easier to incorporate into otherprojects, the amalgamation also makes it run faster. Manycompilers are able to do additional optimizations on code when it is contained with in a single translation unit such as it is in the amalgamation. We have measured performance improvementsof between 5 and 10% when we use the amalgamation to compile SQLite rather than individual source files. The downside of thisis that the additional optimizations often take the form of function inlining which tends to make the size of the resultingbinary image larger.</p><p>The amalgamation andthe sqlite3.h header file are available onthe <a href="download.html">download page</a> as a file named sqlite-amalgamation-X_X_X.zip where the X's are replaced by the appropriate version number.</p><hr><small><i>This page last modified 2008/01/31 18:22:01 UTC</i></small></div></body></html>⌨️ 快捷键说明
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