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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - LLVM 3.7+ doesn't build on Illumos-based OSes (SmartOS, OpenIndiana, etc.)"
href="https://llvm.org/bugs/show_bug.cgi?id=25409">25409</a>
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<th>Summary</th>
<td>LLVM 3.7+ doesn't build on Illumos-based OSes (SmartOS, OpenIndiana, etc.)
</td>
</tr>
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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>Solaris
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Makefiles
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>nikita.baksalyar@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Hello,
Makefile.rules adds linker flags to strip dead symbols. For Solaris-like
operating systems it has the following code:
ifeq ($(HOST_OS),SunOS)
LD.Flags += -Wl,-z -Wl,discard-unused=sections
...
endif
According to an OpenIndiana developers mailing list [1] Illumos (the
OpenSolaris fork) doesn't support the linker flag "discard-unused=sections"
yet. It's available only on Oracle's Solaris 11.1 [2].
That makes it impossible to compile LLVM on Illumos derivatives, such as Joyent
SmartOS, OmniOS, and others.
Both Illumos and Oracle Solaris support `-z ignore` flag, though, that is
similar (but not equivalent) to `discard-unused=sections`. So this bug can be
easily fixed by replacing the "discard-unused=sections" with "ignore".
If maintainers are OK with such a fix, I can submit a patch.
Thanks!
[1] <a href="http://openindiana.org/pipermail/oi-dev/2015-June/003696.html">http://openindiana.org/pipermail/oi-dev/2015-June/003696.html</a>
[2] <a href="https://docs.oracle.com/cd/E26502_01/html/E26507/glmth.html">https://docs.oracle.com/cd/E26502_01/html/E26507/glmth.html</a></pre>
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