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<h2 class="title" style="clear: both"><a id="build_win_small"></a>Building a small memory
footprint library</h2>
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<p>
For applications that don't require all of the
functionality of the full Berkeley DB library, an option is
provided to build a static library with certain functionality
disabled. In particular, cryptography, hash, heap and queue
access methods, replication and verification are all turned
off. In addition, all message text is stripped from the
library. This can reduce the memory footprint of Berkeley DB
significantly.
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<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
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If your library has stripped messages, you can get an
idea of what text should be issued for a given error
message by using the <a href="../articles/mssgtxt/index.html" class="olink">Berkeley DB Message Reference Guide
</a>.
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<p>
In general on Windows systems, you will want to evaluate
the size of the final application, not the library build. The
Microsoft LIB file format (like UNIX archives) includes copies
of all of the object files and additional information. The
linker rearranges symbols and strips out the overhead, and the
resulting application is much smaller than the library. There
is also a Visual C++ optimization to "Minimize size" that will
reduce the library size by a few percent.
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A Visual C++ project file called
<code class="filename">db_small</code> is provided for this small
memory configuration. During a build, static libraries are
created in <code class="filename">Release</code> or
<code class="filename">Debug</code>, respectively. The library name
is <code class="filename">libdb_small60sd.lib</code> for the debug
build, or <code class="filename">libdb_small60s.lib</code> for the
release build.
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For assistance in further reducing the size of the Berkeley
DB library, or in building small memory footprint libraries on
other systems, please contact Berkeley DB support.
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