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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Visual Studio LLVM toolset uses "lib.exe" instead of "llvm-lib.exe""
href="https://bugs.llvm.org/show_bug.cgi?id=41147">41147</a>
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<th>Summary</th>
<td>Visual Studio LLVM toolset uses "lib.exe" instead of "llvm-lib.exe"
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>7.0
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>steven@uplinklabs.net
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<div>
<pre>This affects at least LLVM 7.0 onwards, through trunk.
I noticed that when I compiled objects with "clang-cl -flto", it wasn't able to
create a static library with them. It was apparently using the Visual Studio
provided "lib.exe", which doesn't understand these objects and just spits out
an error message:
foo.obj : fatal error LNK1107: invalid or corrupt file: cannot read at 0x1A4C
It looks like the LLVM.Cpp.Common.{props,targets} files are missing a tool
executable definition for llvm-lib.exe:
diff --git a/tools/msbuild/LLVM.Cpp.Common.props
b/tools/msbuild/LLVM.Cpp.Common.props
index 3420b77cfff..bc021b3b9e1 100644
--- a/tools/msbuild/LLVM.Cpp.Common.props
+++ b/tools/msbuild/LLVM.Cpp.Common.props
@@ -42,8 +42,10 @@
<LLVMInstallDir Condition="'$(LLVMInstallDir)' !=
''">$(LLVMInstallDir)\</LLVMInstallDir>
<ClangClExecutable>$(LLVMInstallDir)bin\clang-cl.exe</ClangClExecutable>
<LldLinkExecutable>$(LLVMInstallDir)bin\lld-link.exe</LldLinkExecutable>
+ <LlvmLibExecutable>$(LLVMInstallDir)bin\llvm-lib.exe</LlvmLibExecutable>
<UseClangCl>true</UseClangCl>
<UseLldLink>true</UseLldLink>
+ <UseLlvmLib>true</UseLlvmLib>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.WindowsSDK.props"
Condition="Exists('$(VCTargetsPath)\Microsoft.Cpp.WindowsSDK.props')"/>
diff --git a/tools/msbuild/LLVM.Cpp.Common.targets
b/tools/msbuild/LLVM.Cpp.Common.targets
index 5870a3d4c59..74a98d6439b 100644
--- a/tools/msbuild/LLVM.Cpp.Common.targets
+++ b/tools/msbuild/LLVM.Cpp.Common.targets
@@ -9,6 +9,7 @@
that the user may have overridden in the UI. -->
<CLToolExe Condition="$(UseClangCl)">$(ClangClExecutable)</CLToolExe>
<LinkToolExe Condition="$(UseLldLink)">$(LldLinkExecutable)</LinkToolExe>
+ <LIBToolExe Condition="$(UseLlvmLib)">$(LlvmLibExecutable)</LIBToolExe>
</PropertyGroup>
<ItemGroup>
Adding the above allowed my .lib with LTO objects to be created properly.</pre>
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