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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LLVM_DYLIB_COMPONENTS broken with multiple targets"
href="https://bugs.llvm.org/show_bug.cgi?id=48974">48974</a>
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<th>Summary</th>
<td>LLVM_DYLIB_COMPONENTS broken with multiple targets
</td>
</tr>
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<th>Product</th>
<td>Build scripts
</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>
</tr>
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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>cmake
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>nikita.ppv@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>When using LLVM_DYLIB_COMPONENTS and building multiple targets, cmake will fail
with:
Library 'x86' is a direct reference to a target library for an omitted
target.
Call Stack (most recent call first):
tools/llvm-shlib/CMakeLists.txt:18 (llvm_map_components_to_libnames)
This is despite the fact that X86 is included in LLVM_TARGETS_TO_BUILD.
The problem appears to be that
<a href="https://github.com/llvm/llvm-project/blob/7de711ecca99f81da3c2ae1705cefe0b4bda70b3/llvm/cmake/modules/LLVM-Config.cmake#L32">https://github.com/llvm/llvm-project/blob/7de711ecca99f81da3c2ae1705cefe0b4bda70b3/llvm/cmake/modules/LLVM-Config.cmake#L32</a>
uses REMOVE_LIST to remove a list from a list, while it can only remove an
element from a list. As such, if LLVM_TARGETS_TO_BUILD contains multiple
targets, this will leave omitted_targets to contain all targets and incorrectly
fail the build.</pre>
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</p>
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