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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Pass arch-specific library name to the linker instead of just '-lomp', '-lgomp' etc."
href="https://llvm.org/bugs/show_bug.cgi?id=31300">31300</a>
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<th>Summary</th>
<td>Pass arch-specific library name to the linker instead of just '-lomp', '-lgomp' etc.
</td>
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<th>Product</th>
<td>OpenMP
</td>
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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>
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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>Clang Compiler Support
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>pirama@google.com
</td>
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<th>CC</th>
<td>danalbert@google.com, llvm-bugs@lists.llvm.org, srhines@google.com
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Currently, '-fopenmp' just gets translated to the corresponding runtime library
(-lomp, -lgomp, -lipmp5) during the link step. However, this precludes a
multilib toolchain from finding the right library based on the target
architecture without extra support from the build system. The sanitizers, for
instance, use libclang_rt.<sanitizer>-<arch>.{so,a}.
To do something similar for OpenMP, we need to
1. change the driver to pass the extended name to the linker.
2. change the CMake build rules to use the extended name instead of libomp.so.
My questions:
1. What is the preferred "full" name? libomp-<arch>.so sounds reasonable to
me.
2. Is the existing behavior preferable to avoid breaking existing code or to
support OpenMP runtimes from outside of this project? If so, I can make the
above changes fire only for Android triples. In this case, we don't need to
immediately update CMake build rules.</pre>
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