<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - llvm-ranlib, llvm-nm, llvm-ar"
href="https://bugs.llvm.org/show_bug.cgi?id=36856">36856</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>llvm-ranlib, llvm-nm, llvm-ar
</td>
</tr>
<tr>
<th>Product</th>
<td>Documentation
</td>
</tr>
<tr>
<th>Version</th>
<td>6.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>General docs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dilyan.palauzov@aegee.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>gcc-ar/gcc-nm/gcc-ranlib compared to ar/nm/ranlib provide an implicit --plugin
argument, so that the former can work with LTO objects, even when the gcc-lto
plugin is not in {libdir}/bfd-plugins.
Do llvm-ar, llvm-ranlib and llvm-nm also imply a --plugin argument, compared to
ar/ranlib/nm concerning LTO?
How should libraries be portably build with LTO? Shall ./configure detect,
whether clang or gcc is used, and then substitute AR with llvm-ar or gcc-ar,
until llvm starts installing LLVMgold.so under {libdir}/bfd-plugins ?
Also <a href="https://llvm.org/docs/LinkTimeOptimization.html">https://llvm.org/docs/LinkTimeOptimization.html</a> does not say anything
about llvm-ar/llvm-nm/llvm-ranlib, only on
<a href="https://clang.llvm.org/docs/ThinLTO.html">https://clang.llvm.org/docs/ThinLTO.html</a> they are decently mentioned. At the
same time under <a href="https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html">https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html</a> gcc-ar
and gcc-ranlib are mentioned.
Finally, if two different versions of clang are installed on a system, lets'
say first clang5 is installed and then clang6. Then the install process creates
only one LLVMgold.so, which is overwriten by the second installation. Will
then llvm-ar use that newer LLVMgold.so, even if the object file was compiled
with clang-6.0. I do not know how gcc-ar acts in this regard, but at least the
different lto-plugins per gcc version coexist on the system in different
directories.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>