<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 - -DLLVM_ENABLE_LTO="Thin" fails with gcc-9"
href="https://bugs.llvm.org/show_bug.cgi?id=43193">43193</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>-DLLVM_ENABLE_LTO="Thin" fails with gcc-9
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Tooling
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sylvestre@debian.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>% /usr/bin/gcc-8 -flto=thin -c c.c
% /usr/bin/gcc-9 -flto=thin -c c.c
cc1: error: unrecognized argument to ‘-flto=’ option: ‘thin’
This is causing the cmake start to fail with:
-- Performing Test HAS_ATTRIBUTE_WARN_UNUSED_RESULT
-- Performing Test HAS_ATTRIBUTE_WARN_UNUSED_RESULT - Failed
-- Performing Test HAVE___ATTRIBUTE__
-- Performing Test HAVE___ATTRIBUTE__ - Failed
-- Performing Test HAVE_DECL_FFS
-- Performing Test HAVE_DECL_FFS - Failed
-- Performing Test HAVE_DECL___BUILTIN_FFS
-- Performing Test HAVE_DECL___BUILTIN_FFS - Failed
-- Performing Test HAVE_DECL__BITSCANFORWARD
-- Performing Test HAVE_DECL__BITSCANFORWARD - Failed
CMake Error at tools/polly/lib/External/CMakeLists.txt:91 (message):
No ffs implementation found</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>