<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/109328>109328</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang][Unittests] - Linker failure in clang unittests for Clang driver
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          bhandarkar-pranav
      </td>
    </tr>
</table>

<pre>
    I am getting the following build error
```
FAILED: tools/clang/unittests/Driver/ClangDriverTests
: && /usr/bin/c++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG -Wl,--gc-sections tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/DistroTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/DXCModeTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/GCCVersionTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/ToolChainTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/ModuleCacheTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/MultilibBuilderTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/MultilibTest.cpp.o tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/SanitizerArgsTest.cpp.o -o tools/clang/unittests/Driver/ClangDriverTests -Wl,-rpath,/home/prbhanda/git/bhandarkar-pranav/build/build-12Sep24/lib lib/libLLVMX86CodeGen.so.20.0git  lib/libLLVMX86AsmParser.so.20.0git lib/libLLVMX86Desc.so.20.0git  lib/libLLVMX86Disassembler.so.20.0git lib/libLLVMX86Info.so.20.0git  lib/libLLVMAMDGPUCodeGen.so.20.0git lib/libLLVMAMDGPUAsmParser.so.20.0git lib/libLLVMAMDGPUDisassembler.so.20.0git  lib/libLLVMNVPTXCodeGen.so.20.0git lib/libLLVMNVPTXDesc.so.20.0git  lib/libLLVMNVPTXInfo.so.20.0git lib/libllvm_gtest_main.so.20.0git  lib/libllvm_gtest.so.20.0git lib/libclangFrontend.so.20.0git  lib/libLLVMAMDGPUDesc.so.20.0git lib/libLLVMAMDGPUInfo.so.20.0git  lib/libLLVMAMDGPUUtils.so.20.0git lib/libclangDriver.so.20.0git  lib/libLLVMOption.so.20.0git lib/libclangBasic.so.20.0git  lib/libLLVMMC.so.20.0git lib/libLLVMTargetParser.so.20.0git  lib/libLLVMSupport.so.20.0git -Wl,-rpath-link,/home/prbhanda/git/bhandarkar-pranav/build/build-12Sep24/lib && :
/usr/bin/ld: tools/clang/unittests/Driver/CMakeFiles/ClangDriverTests.dir/ToolChainTest.cpp.o: undefined reference to symbol '_ZN5clang22PCHContainerOperationsC1Ev'
/usr/bin/ld: /home/prbhanda/git/bhandarkar-pranav/build/build-12Sep24/lib/libclangSerialization.so.20.0git: error adding symbols: DSO missing from command line
```
I build with `BUILD_SHARED_LIBS=ON`.  It started with this commit https://github.com/llvm/llvm-project/commit/d1335fb86466221b0499db5fc8f158f1f64d9542

</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy0V1tv2zwS_TX0C0FDpnx98IMtxamB3LBJ6mJfAkocSbOhSC1JuU1__YKSc2kap9kPDRBE5ujMmYuG4pFwDksNsCSTNZmkA9H6ythlVgkthb0XljVWaLEfZEY-LLdU1LQE71GX1FdAC6OU-R5WWYtKUrDWWBKlJFqRaXT465ab1fbsJCXxinpjlCN8kyuhS8I3rUbvwflgSy3uwRK-ScLNfnXT3es54xUlfEr4lAZHF5AZ6kBG-JrwNWXF1TahrNCGOaiF9pgz1B5sYxx6NJqyYo8OM1ToHxhqhRocq1BK0JTt-gLiVAoPzGMNPZfCAsKKSQeU7YRSAfvDW0HZThvW6taBZI2wogYPlrLdd4semPMWdeko2-XCefbfVqjeo0bnUJesQFCSoUaPQuFPsI6yBmSXeY9URpfdP8p2WDcKc_SsEEr5ypq2rB4zeOaQvUkbrVt1iJcr4RyroRZ5Ds71Rguy1SEWq80eelsDzmGNP0Nyz1Zt4EcOjWf-oQkmCQo8hBBsj9a3QjHpTajbtWUJzjOzB2tRHvxzU9eg_VPtCoQMEVBL0F70T2aXeyFZLR4yYK12bdMY60M1hURRauM85o7lRoVARdHqPPgxB93VBZzw4uX6ELkjDwkpIyTIx5QPc-It5p4JhSI8EcouY8rSi_RkfXtK2U4RnjBW5s-0Hxvgc3EPG1Tg3pjmocSASdF5a4JlmDfN0PxF5m_JuZHwGdSnSfIVrEOjP4P9xhiVVAI_hfzcyFZBIvLqUzpz3iqPCrN1eBX2tz4rxGdwX4vwAvkJdmVL9yIA-2iMV7SPe8c2wleEJ4RvKlMD4ZvG9ucL4ZsSfXiHvz5ugi108fHKRvwaGj4mfKMwowqz_tfZ2dfzb_NpYiScgh46M-TRMCrR098wK1dfCevAvkS9BqXg8ndZUnTCOagz9T7RVhfmONHqPD29un0j6zdQf867xx3L7Ffsxderm29_CtyB3m9FB3ld5BNCqX19V4YJuasFHnkuz6A3ObpZ21ijPWj5p1a-TvYNyEeeyK1H5Y5n0w_3cZLLJhwQx_3XwuE7PT1PjpZwI2wJ_vc5-BV13Z-YLwEv9yBTqO__7kZ8FGPx6iDQflVlSn5c8P2zwyHwt1pCgRoktVCABZ0D9Ya6hzozihI-u_v3xaQLzvlV8iUx2gvUYC8bsJ3ycMnoZE_47J0a_l7PXszDNdhOsIlXYxMCdkKUChlU0qEUF-zp9SU9aEdaWFPToG-EljQI2TeV9_agzb-jryiZRuvb7Vl6d_1l9a-T9O5su74mcXp5QabRkNKtp86LTnR1cF-h6yKgp5X3TUiB8E1fe9Vmw9zUoSC1f7ywxpr_QB4a0_sRvpGjOJ4U2Xw6nk45H2XReLGQ2aTI58VoMi9GxXQsF5Mx7_MdyGUsF_FCDGA5mvHpbDad8_GgWi4mQorFRIg5n87m83jM48UiW0DBIZ9HUznAJY_4OFqMFjwaxePxcCaKcZxleSZgHMWjGRlHUAtUw5Dp0NhygM61sBxFi5jPB0pkoFz3KcT5YVp5-Cqyy660rC0dGUcKw0g-UXj0qvt-6qaWTFIyWd8-jfgkpYyeob4HSwuBqrVAUdOOnT7tBFoYSzt_KruxH7RWLf_vjnfVhA10KGi_5P8LAAD__wN2rrQ">