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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 - clang-cl /MT results in linker error unless /link /DEFAULTLIB:LIBCMT.lib is added"
href="https://bugs.llvm.org/show_bug.cgi?id=35120">35120</a>
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<th>Summary</th>
<td>clang-cl /MT results in linker error unless /link /DEFAULTLIB:LIBCMT.lib is added
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>5.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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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>Driver
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>andreas.haferburg@gmx.de
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr></table>
<p>
<div>
<pre>Input .ll file:
<span class="quote">> ; ModuleID = 'D:\dropbox\proj\dkmv\tests\test.dkf'
> source_filename = "D:\5Cdropbox\5Cproj\5Cdkmv\5Ctests\5Ctest.dkf"
> target triple = "x86_64-pc-windows-msvc19.0.23026"
> define i32 @main(i8*) {
> call i32 @puts(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @lit1, i32 0, i32 0))
> ret i32 0
> }
> @lit1 = internal constant [13 x i8] c"Hello World!\00"
> declare i32 @puts(i8*) nounwind</span >
Building with
<span class="quote">> clang-cl.exe /MT /o "%build_dir%\test.exe" "%build_dir%\test.ll"</span >
results in errors:
<span class="quote">> test-845194.obj : error LNK2019: unresolved external symbol puts referenced in function main
> LINK : error LNK2001: unresolved external symbol mainCRTStartup</span >
Looking at the output of -###, it does add "-D_MT" and
"--dependent-lib=libcmt". I believe the idea is that the dependency on libcmt
is written to the .obj file. But the linker doesn't seem to pick it up.
If I build with
<span class="quote">> clang-cl.exe /Z7 /MT /o "%build_dir%\test.exe" "%build_dir%\test.ll" /link /DEFAULTLIB:LIBCMT.lib</span >
it works fine.
link.exe says "Microsoft (R) Incremental Linker Version 14.00.23026.0".</pre>
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