<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/99767>99767</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            stage2 compiler-rt build fails on X86_64 MacOS GitHub runners
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          tstellar
      </td>
    </tr>
</table>

<pre>
    I'm trying to do release builds on the x86_64 MacOS GitHub runners, and the stage2 compiler-rt build is failing with errors like:

`fatal error: /Applications/Xcode_15.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo: /var/folders/80/7d6cd1d13n9by5z92zm5q2mr0000gn/T/lsan_common-429870/lsan_common-x86_64.out and /var/folders/80/7d6cd1d13n9by5z92zm5q2mr0000gn/T/lsan_common-f0ff7a/lsan_common-x86_64h.out have the same architectures (x86_64) and can't be in the same fat output file`

The full log can be found [here](https://github.com/tstellar/llvm-project/actions/runs/10016041098/job/27693684826).

I am able to work around this by passing the following CMake options:

```
-DBOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF 
-DBOOTSTRAP_DARWIN_osx_ARCHS=x86_64 
-DBOOTSTRAP_DARWIN_osx_BUILTIN_ARCHS=x86_64
```

### How to Reproduce

```
cmake -G Ninja -S llvm -B build \
 -DLLVM_RELEASE_ENABLE_PGO=OFF 
 -DLLVM_RELEASE_ENABLE_PROJECTS="clang;lld;lldb;clang-tools-extra;bolt;polly;mlir" \
    -C clang/cmake/caches/Release.cmake

ninja -C build stage2-package
```

</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJysVUuPozgQ_jXOxSIyBeFx4JAXM1mlO6N0dndukYEieNpg1jb9mF-_MqQ1vdOP00rIgP25qr5yfWVujLh0iBlZrMhiM-ODbZTOrLEoJdezQlXP2Y5A3FKrn0V3oVbRSlGNErlBWgxCVoaqjtoG6VMSnaOQ3vDycEe_CPt1KKgeug61IbCmvKtGmLH8gkBL1fZCova0nexQYWjNhXRuHoVtKGqttKFS3CMJloRtCHsZI1Zzy-UEIcGSEsiXfS9Fya1QnSGQfy9VhWd_MYc573sC-Vp1Fjvr1jb4gFL1qAnkJ6Vk2XDxa9MGaz5IO38q7csagXwwDl2M31L06ur1gbvpWslqpJknjEAeV1FZ-ZUfdGnxvPiZws928Q-0mjHGLs7AyRkxvDuXqm1V54WQJjH7bXLK51wNdszd_-asZnUd83edNaO3hj_gdFS8Rcp12QiLpR00GkogmaAE0jGskncEYksLpKL7tavmlqrB9oOltZBIIvb6AE8N0nqQkkp1cRbc7loNjuVi1aBGstgQSBpre-POHnIC-UXYZijmpWoJ5C816mjIh9brtfqBpSWQ8_KlBPQwvnzG_IiFPksTAvkPVRDIIY7SIErCBCIC6fx1bDvKW8oLia7YH5W-p1yPodlGGFo8097JxmnBkVBSqkf3t77h90hVPzl_U6_XZ_z1NqvD4XR3Oi6_ndeHm2-7_fZ4Pp7O29vlar897w53JNgc8py-hW-Wx793t2dlns7L4_qrA15l9yl29eduf9rd_rbn3eCuIwTTQ7-qR5eII_ZaVUOJn_AqW5cC7wu9Fd0PTr076o6GequrwMliPQGpt9nv_7o5H7f77fJu-0L825fDf4h_BDse_tiuT44HASgl7y4kWElZTWNBgtU46Tn5Gg-frOYkWBVKWhKseiXlMwlWrRSaALwKilLqrelkD_KRjHvzskFXRsep6c2nhVdZ6Ca26yvLqb95PS_v-QXfTdSsyoIqDVI-w8yPwQ-TNE79WZP5SVgDBnUMSZKkYZgiS9Iaw9j3F0UcJTORAYOQxcD8RRAF_jwIgNVl5IcLZCEESEKGLRdy7lI_V_oyE8YMmKVpHMUzyQuUZmz3AB0-0nGRALjur7NRScVwMSRkUhhrflmxwkrMPuzdrnGPF8H3jy-B2aBl9omkna-3ch4jdPmfGDxk8G8AAAD__7gmEQA">