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<td ><a href="index.html">Qt 5.9</a></td><td >Qt for Linux/X11 - Specific Issues</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#linux">Linux</a></li>
<li class="level2"><a href="#installation-problems">Installation problems</a></li>
<li class="level2"><a href="#intel-c-compiler-for-linux">Intel C++ Compiler for Linux</a></li>
<li class="level2"><a href="#known-issues-with-intel-c-compiler-for-linux">Known Issues with Intel C++ Compiler for Linux</a></li>
<li class="level2"><a href="#known-issues-with-gcc-compilers">Known Issues with GCC Compilers</a></li>
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<h1 class="title">Qt for Linux/X11 - Specific Issues</h1>
<span class="subtitle"></span>
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<div class="descr"> <a name="details"></a>
<p>This page contains information about the X11 platforms Qt is currently known to run on, with links to platform-specific notes.</p>
<a name="linux"></a>
<h2 id="linux">Linux</h2>
<p>There are no known problems with using Qt on production versions of Linux/x86, Linux/ppc, Linux/amd64 and Linux/ia64 (including Altix(R)).</p>
<p>For information about the specific compilers supported, visit the <a href="supported-platforms.html#reference-configurations">supported platforms</a> page.</p>
<a name="installation-problems"></a>
<h3 >Installation problems</h3>
<p>Installing the source (<i>.tgz</i>) will likely conflict with the Qt version from your Linux distribution. This can result in link errors, such as:</p>
<pre class="cpp">

  undefined reference to <span class="char">'_vt.11QPushButton'</span>

</pre>
<p>This is solved by removing the older version of the library.</p>
<p>If you have problems installing open source versions of Qt provided by your Linux distribution, for example, from RPM or APT repositories, please consult the maintainers of the distribution.</p>
<p>Some RPM versions have problems installing some of the Qt RPM archives where installation stops with an error message warning about a <b>Failed Dependency</b>. Use the <code>--nodeps</code> option of <code>rpm</code> as workaround this problem.</p>
<a name="intel-c-compiler-for-linux"></a>
<h3 >Intel C++ Compiler for Linux</h3>
<p>Qt can be compiled with the Intel C++ compile for Linux, though, this configuration is not tested on a regular basis.</p>
<a name="known-issues-with-intel-c-compiler-for-linux"></a>
<h3 >Known Issues with Intel C++ Compiler for Linux</h3>
<ul>
<li>Precompiled header support does not work in version 10.0&#x2e;025 and older. For these compilers, you should configure Qt with -no-pch. Precompiled header support works properly in version 10.0&#x2e;026 and later.</li>
<li>Version 10.0&#x2e;026 for Intel 64 is known to miscompile qmake when building in release mode. For now, configure Qt with -debug. Version 10.1&#x2e;008 and later can compile qmake in release mode.</li>
<li>Versions 10.1&#x2e;008 to 10.1&#x2e;015 for both IA-32 and Intel 64 are known crash with &quot;(0): internal error: 0_47021&quot; when compiling Qt XML Patterns and <a href="../qtdesigner/qtdesigner-manual.html">Qt Designer</a> in release mode. Version 10.1&#x2e;017 compiles these modules correctly in release mode.</li>
</ul>
<a name="known-issues-with-gcc-compilers"></a>
<h3 >Known Issues with GCC Compilers</h3>
<p>Building Qt with certain versions of GCC has the following known issues:</p>
<ul>
<li>GCC 4.9&#x2e;2 fails to build Qt:<ul>
<li><a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65309">Related bug</a> in GCC's bug tracker</li>
<li><a href="http://lists.qt-project.org/pipermail/development/2015-March/020632.html">Discussion</a> on <a href="mailto://development@qt-project.org">development@qt-project.org</a> mailing list</li>
</ul>
</li>
<li>GCC 5.2&#x2e;1: Nested structs do not get their constructors called under some circumstances:<ul>
<li><a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67550">Related bug</a> in GCC's bug tracker</li>
<li><a href="https://codereview.qt-project.org/161071">A possible workaround</a></li>
</ul>
</li>
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