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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ASTMatchers.h imposes link-dependency on LLVMFrontendOpenMP"
href="https://bugs.llvm.org/show_bug.cgi?id=48191">48191</a>
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<th>Summary</th>
<td>ASTMatchers.h imposes link-dependency on LLVMFrontendOpenMP
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>11.0
</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>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Tooling
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>anton.kreuzkamp@kdab.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24165" name="attach_24165" title="CMakeLists.txt used to setup compilation for minimal example">attachment 24165</a> <a href="attachment.cgi?id=24165&action=edit" title="CMakeLists.txt used to setup compilation for minimal example">[details]</a></span>
CMakeLists.txt used to setup compilation for minimal example
One could argue whether this is a bug, but it seems at least unintended that
since clang 11.0 ASTMatchers.h imposes a dependency on libLLVMFrontendOpenMP.
I.e. apparently any clang tool that uses AST matchers must link against
libLLVMFrontendOpenMP.
Attached is a minimal example to reproduce the bug. It's an empty program,
doing nothing but #include "ASTMatchers.h". It's then linked against clang-cpp
and LLVMCore, which should be enough and was enough with clang 10. Now it gives
a linker error.
This can be worked around, by adding `LLVMFrontendOpenMP` to the list of linked
libraries.</pre>
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</p>
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