<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 - LLDB build with -DLLVM_ENABLE_MODULES=On fails with undefined reference to libstdc++'s std::__enable_shared_from_this_base"
href="https://bugs.llvm.org/show_bug.cgi?id=43819">43819</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>LLDB build with -DLLVM_ENABLE_MODULES=On fails with undefined reference to libstdc++'s std::__enable_shared_from_this_base
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>Modules
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>l.lunak@centrum.cz
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22736" name="attach_22736" title="full error message">attachment 22736</a> <a href="attachment.cgi?id=22736&action=edit" title="full error message">[details]</a></span>
full error message
Steps to reproduce:
- current LLVM checkout (9231e443445f0b8adb1a1b22d7d246c8bc337227)
$ cmake -GNinja -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_OPTIMIZED_TABLEGEN=On
-DBUILD_SHARED_LIBS=On -DCMAKE_BUILD_TYPE=RelWithDebInfo
-DLLVM_ENABLE_ASSERTIONS=On -DLLVM_ENABLE_LLD=On -DLLVM_USE_SPLIT_DWARF=On
-DLLVM_LIBDIR_SUFFIX=64 -DCMAKE_SKIP_RPATH:BOOL=OFF -DLLVM_ENABLE_MODULES=On
-DLLVM_ENABLE_PROJECTS=clang;lld;compiler-rt;lldb
$ ninja lldb
The build eventually fails with errors such as
ld.lld: error: undefined symbol:
std::__enable_shared_from_this_base(std::__shared_count<(__gnu_cxx::_Lock_policy)2>
const&, std::enable_shared_from_this<lldb_private::RecognizedStackFrame>
const*)
<span class="quote">>>> referenced by shared_ptr_base.h:1382 (/usr/bin/../lib64/gcc/x86_64-suse-linux/9/../../../../include/c++/9/bits/shared_ptr_base.h:1382)
>>> StackFrameRecognizer.cpp.o:(std::__shared_ptr<lldb_private::RecognizedStackFrame, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<ScriptedRecognizedStackFrame, void>(ScriptedRecognizedStackFrame*)) in archive lib64/liblldbTarget.a</span >
Removing -DLLVM_ENABLE_MODULES=On avoids the problem. Building with
-DLLVM_ENABLE_LIBCXX=On also avoids the problem.
The build is self-hosted (i.e. the compiler is from the same checkout). OS is
openSUSE Leap 15.1, libstdc++ is
libstdc++6-devel-gcc9-9.2.1+r275327-lp151.55.1.x86_64 .</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>