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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang 13 bootstrap is failing on Debian i386 " Host compiler must support std::atomic!""
href="https://bugs.llvm.org/show_bug.cgi?id=49827">49827</a>
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<th>Summary</th>
<td>clang 13 bootstrap is failing on Debian i386 " Host compiler must support std::atomic!"
</td>
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<th>Product</th>
<td>clang
</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>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>release blocker
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>sylvestre@debian.org
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The cmake fails with:
-- Performing Test HAVE_CXX_ATOMICS_WITH_LIB - Failed
CMake Error at cmake/modules/CheckAtomic.cmake:56 (message):
Host compiler must support std::atomic!
Call Stack (most recent call first):
cmake/config-ix.cmake:367 (include)
CMakeLists.txt:670 (include)
/root/llvm-toolchain-snapshot-13~++20210403032730+89afec348dbd/build-llvm/./bin/clang++
-D_GNU_SOURCE -fuse-ld=gold -fPIC -DHAVE_CXX_ATOMICS_WITH_LIB -std=c++11
-std=c++14 -c foo.cpp
In file included from foo.cpp:1:
In file included from
/usr/lib/gcc/i686-linux-gnu/8/../../../../include/c++/8/atomic:41:
/usr/lib/gcc/i686-linux-gnu/8/../../../../include/c++/8/bits/atomic_base.h:35:10:
fatal error: 'bits/c++config.h' file not found
#include <bits/c++config.h>
^~~~~~~~~~~~~~~~~~
1 error generated.
testcase:
#include <atomic>
std::atomic<int> x;
std::atomic<short> y;
std::atomic<char> z;
int main() {
++z;
++y;
return ++x;
}</pre>
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