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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [lld] Support -pie"
href="https://llvm.org/bugs/show_bug.cgi?id=26923">26923</a>
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<th>Summary</th>
<td>[lld] Support -pie
</td>
</tr>
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<th>Product</th>
<td>lld
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>All Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>chisophugis@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>I ran into this with LTO. In:
<a href="http://llvm.org/klaus/lld/blob/master/ELF/SymbolTable.cpp#L-125">http://llvm.org/klaus/lld/blob/master/ELF/SymbolTable.cpp#L-125</a>
We set the reloc model to PIC or Static depending just on Config->Shared. On
platforms requiring pie, we will incorrectly codegen the combined LTO object as
static, resulting in failures during dynamic linking.
I haven't looked at where else in the linker needs to be updated for -pie, but
at the very least LTO needs to be aware of it.
-pie
--pic-executable
Create a position independent executable. This is currently only
supported on ELF platforms. Position independent executables are
similar to shared libraries in that they are relocated by the
dynamic linker to the virtual address the OS chooses for them
(which can vary between invocations). Like normal dynamically
linked executables they can be executed and symbols defined in the
executable cannot be overridden by shared libraries.</pre>
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</p>
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