mirror of
https://github.com/yasuhirokimura/db18
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Yasuhiro KIMURA
109 lines
4.8 KiB
HTML
109 lines
4.8 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Building a small memory footprint library</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB Installation and Build Guide" />
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<link rel="up" href="build_win.html" title="Chapter 4. Building Berkeley DB for Windows" />
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<link rel="prev" href="win_additional_options.html" title="Additional build options" />
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<link rel="next" href="build_win_test.html" title="Running the test suite under Windows" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 18.1.40</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Building a small memory
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footprint library</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="win_additional_options.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 4. Building Berkeley DB for Windows </th>
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<td width="20%" align="right"> <a accesskey="n" href="build_win_test.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="build_win_small"></a>Building a small memory
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footprint library</h2>
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</div>
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</div>
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</div>
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<p>
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For applications that don't require all of the
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functionality of the full Berkeley DB library, an option is
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provided to build a static library with certain functionality
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disabled. In particular, cryptography, hash, heap and queue
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access methods, replication and verification are all turned
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off. In addition, all message text is stripped from the
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library. This can reduce the memory footprint of Berkeley DB
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significantly.
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</p>
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<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
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<h3 class="title">Note</h3>
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<p>
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If your library has stripped messages, you can get an
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idea of what text should be issued for a given error
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message by using the <a href="../articles/mssgtxt/index.html" class="olink">Berkeley DB Message Reference Guide
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</a>.
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</p>
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</div>
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<p>
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In general on Windows systems, you will want to evaluate
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the size of the final application, not the library build. The
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Microsoft LIB file format (like UNIX archives) includes copies
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of all of the object files and additional information. The
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linker rearranges symbols and strips out the overhead, and the
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resulting application is much smaller than the library. There
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is also a Visual C++ optimization to "Minimize size" that will
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reduce the library size by a few percent.
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</p>
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<p>
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A Visual C++ project file called
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<code class="filename">db_small</code> is provided for this small
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memory configuration. During a build, static libraries are
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created in <code class="filename">Release</code> or
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<code class="filename">Debug</code>, respectively. The library name
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is <code class="filename">libdb_small181sd.lib</code>
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for the debug build, or
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<code class="filename">libdb_small181s.lib</code> for the
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release build.
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</p>
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<p>
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For assistance in further reducing the size of the Berkeley
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DB library, or in building small memory footprint libraries on
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other systems, please contact Berkeley DB support.
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</p>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="win_additional_options.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="build_win.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="build_win_test.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Additional build options </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> Running the test suite under
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Windows</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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