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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Build breaks on OpenBSD when linking shared libs"
href="https://llvm.org/bugs/show_bug.cgi?id=25534">25534</a>
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<th>Summary</th>
<td>Build breaks on OpenBSD when linking shared libs
</td>
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<th>Product</th>
<td>Build scripts
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>OpenBSD
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>cmake
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>sisnkemp@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When linking libLTO.so, the build aborts, complaining about undefined
references to assert2, cxa_exit, etc.
The solution is not not use the -z,defs option when building a shared library
on OpenBSD. This is option is also avoided on FreeBSD, Darwin, Win32 or Cygwin.
A diff to make the build go through on OpenBSD is given at:
<a href="http://reviews.llvm.org/D14236">http://reviews.llvm.org/D14236</a>
Linking explictly against libc does not work for the reasons described here:
<a href="http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151102/309783.html">http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151102/309783.html</a></pre>
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</p>
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