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<h1 class="title">Qt for Embedded Linux Requirements<br /><span class="subtitle"></span>
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<a name="building-qt-for-embedded-linux-with-uclibc"></a>
<h3>Building Qt for Embedded Linux with uclibc</h3>
<p>If you intend to include the <a href="qtwebkit.html">QtWebKit</a> module in your Qt build then you should use version <b>uClibc 0.9.29 or greater</b> as that is the earliest version with sufficient pthread support.</p>
<a name="memory-requirements"></a>
<h3>Memory Requirements</h3>
<p>The memory and storage requirements for Qt for Embedded Linux depend on a an variety of different factors, including the target architecture and the features enabled in the Qt build.</p>
<p>The following table shows typical library sizes for the most common Qt libraries on different architectures, built in release mode with different feature profiles.</p>
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<thead><tr valign="top" class="qt-style"><th rowspan="2">Architecture</th><th rowspan="2">Compiler</th><th colspan="2"><a href="qtcore.html">QtCore</a></th><th colspan="2"><a href="qtgui.html">QtGui</a></th><th colspan="2"><a href="qtnetwork.html">QtNetwork</a></th><th colspan="2"><a href="qtwebkit.html">QtWebKit</a></th></tr>
<tr valign="top" class="qt-style"><th>Minimal</th><th>Normal</th><th>Minimal</th><th>Normal</th><th>Minimal</th><th>Normal</th><th>Minimal</th><th>Normal</th></tr></thead>
<tr valign="top" class="odd"><td>linux-x86-g++</td><td>GCC 4.2.4</td><td>1.7M</td><td>2.7M</td><td>3.3M</td><td>9.9M</td><td>653K</td><td>1.1M</td><td>N/A</td><td>17M</td></tr>
<tr valign="top" class="even"><td>linux-arm-g++</td><td>GCC 4.1.1</td><td>1.9M</td><td>3.2M</td><td>4.1M</td><td>11M</td><td>507K</td><td>1.0M</td><td>N/A</td><td>17M</td></tr>
<tr valign="top" class="odd"><td>linux-mips-g++ (MIPS32)</td><td>GCC 4.2.4</td><td>2.0M</td><td>3.2M</td><td>4.5M</td><td>12M</td><td>505K</td><td>1003K</td><td>N/A</td><td>21M</td></tr>
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<p>Library sizes are given in the following units: K = 1024 bytes; M = 1024K. <a href="qtwebkit.html">QtWebKit</a> is excluded from the minimal configuration.</p>
<p>The <a href="fine-tuning-features.html">Fine-Tuning Features in Qt</a> document covers the process of configuring Qt builds to avoid the inclusion of unnecessary features.</p>
<a name="additional-x11-libraries-for-qvfb"></a>
<h3>Additional X11 Libraries for QVFb</h3>
<p>The Virtual Framebuffer (QVFb) application requires the <tt>libxtst</tt> library in addition to the libraries used to build Qt for X11. This library enables the use of the Record extension to the X protocol to be used in applications.</p>
<p>See also <a href="known-issues.html">Known Issues in 4.6.3</a>.</p>
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