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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang does not record command line options in objects built"
href="https://bugs.llvm.org/show_bug.cgi?id=32226">32226</a>
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<th>Summary</th>
<td>Clang does not record command line options in objects built
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</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>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>zhizhouy@google.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>This bug is originally from chromium.
Link: <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=669699">https://bugs.chromium.org/p/chromium/issues/detail?id=669699</a>
GCC records the command line options of how the object was built.
It takes -grecord-gcc-switches default as on, and record the options into
DW_AT_producer in DWARF as debug info.
While in clang, DW_AT_producer only records current version of the clang.
To reproduce:
Build a object with clang/gcc with option -g.
Then use "readelf --debug-dump=info" to check the object, search for
DW_AT_producer.</pre>
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