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[11.0-preview.2] Native AoT compilation fails on macOS due to missing .pcm files #124336

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[11.0-preview.2] Native AoT compilation fails on macOS due to missing .pcm files#124336
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area-NativeAOT-coreclr

Description

@martincostello
martincostello
opened on Feb 12, 2026

Description

I have a .NET 10 AoT application which I'm testing a .NET 11 upgrade with.

After upgrading to net11.0 and building with the .NET 11 preview 1 SDK, native compilation fails on the macos-latest GitHub Actions runner (Linux and Windows work as expected).

EXEC : error : /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm: No such file or directory [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
  note: while processing /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm
  note: Linking a static library that was built with -gmodules, but the module cache was not found.  Redistributable static libraries should never be built with module debugging enabled.  The debug experience will be degraded due to incomplete debug information.
EXEC : error : /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm: No such file or directory [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
  note: while processing /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073: The command " [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         dsymutil  "/Users/runner/work/alexa-london-travel/alexa-london-travel/artifacts/bin/LondonTravel.Skill/release/native/LondonTravel.Skill" && [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         strip -no_code_signature_warning -x "/Users/runner/work/alexa-london-travel/alexa-london-travel/artifacts/bin/LondonTravel.Skill/release/native/LondonTravel.Skill"" exited with code -1. [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]

Reproduction Steps

  1. Clone martincostello/alexa-london-travel@2b801b3 on a macOS machine.
  2. Run build.ps1 in the root of the repository

Expected behavior

Compilation succeeds.

Actual behavior

Compilation fails:

Publishing solution...
  Determining projects to restore...
  Restored /Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj (in 5.18 sec).
  LondonTravel.Skill -> /Users/runner/work/alexa-london-travel/alexa-london-travel/artifacts/bin/LondonTravel.Skill/release/LondonTravel.Skill.dll
  Generating native code
EXEC : error : /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm: No such file or directory [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
  note: while processing /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm
  note: Linking a static library that was built with -gmodules, but the module cache was not found.  Redistributable static libraries should never be built with module debugging enabled.  The debug experience will be degraded due to incomplete debug information.
EXEC : error : /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm: No such file or directory [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
  note: while processing /var/folders/yz/zr09txvs5dn18vt4cn21kzl40000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073: The command " [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         dsymutil  "/Users/runner/work/alexa-london-travel/alexa-london-travel/artifacts/bin/LondonTravel.Skill/release/native/LondonTravel.Skill" && [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.1.26104.118/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         strip -no_code_signature_warning -x "/Users/runner/work/alexa-london-travel/alexa-london-travel/artifacts/bin/LondonTravel.Skill/release/native/LondonTravel.Skill"" exited with code -1. [/Users/runner/work/alexa-london-travel/alexa-london-travel/src/LondonTravel.Skill/LondonTravel.Skill.csproj]
Exception: /Users/runner/work/alexa-london-travel/alexa-london-travel/build.ps1:108

Regression?

Yes.

Known Workarounds

None.

Configuration

.NET SDK 11.0.100-preview.1.26104.118

Other information

No response

Activity

  1. dotnet-policy-service
    added
    untriagedNew issue has not been triaged by the area owner
    on Feb 12, 2026
  2. github-actions
    added
    needs-area-labelAn area label is needed to ensure this gets routed to the appropriate area owners
    on Feb 12, 2026

  3. MihuBot commented on Feb 12, 2026

    @MihuBot
    MihuBot
    on Feb 12, 2026

    I'm a bot. Here is a possible duplicate issue (I may be wrong):

  4. martincostello commented on Feb 12, 2026

    @martincostello
    martincostello
    on Feb 12, 2026
    MemberAuthor

    Setting StripSymbols=false as noted in #123687 fixes the compilation.

  5. martincostello
    closed this as a duplicateof Remove StripSymbols workaround for macOS NativeAOT publish once Swift module debug fix is available #123687 on Feb 12, 2026
  6. dotnet-policy-service
    removed
    untriagedNew issue has not been triaged by the area owner
    on Feb 12, 2026
  7. martincostello
    added
    untriagedNew issue has not been triaged by the area owner
    area-NativeAOT-coreclr
    and removed
    needs-area-labelAn area label is needed to ensure this gets routed to the appropriate area owners
    on Feb 12, 2026

  8. martincostello commented on Feb 12, 2026

    @martincostello
    martincostello
    on Feb 12, 2026
    MemberAuthor

    Spoke too soon - the workaround didn't work. Might still be a duplicate, but re-opening just in case.

  9. martincostello
    reopened this on Feb 12, 2026

  10. martincostello commented on Mar 11, 2026

    @martincostello
    martincostello
    on Mar 11, 2026
    MemberAuthor

    Still an issue with .NET 11 preview 2 (11.0.100-preview.2.26159.112):

      Generating native code
  ld: warning: -ld_classic is deprecated and will be removed in a future release
EXEC : error : /var/folders/t5/f77_gwnj6p95qxy9py3fckx00000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm: No such file or directory [/Users/runner/work/website/website/src/Website/Website.csproj]
  note: while processing /var/folders/t5/f77_gwnj6p95qxy9py3fckx00000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/_SwiftConcurrencyShims-2EK7503T0009Z.pcm
  note: Linking a static library that was built with -gmodules, but the module cache was not found.  Redistributable static libraries should never be built with module debugging enabled.  The debug experience will be degraded due to incomplete debug information.
EXEC : error : /var/folders/t5/f77_gwnj6p95qxy9py3fckx00000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm: No such file or directory [/Users/runner/work/website/website/src/Website/Website.csproj]
  note: while processing /var/folders/t5/f77_gwnj6p95qxy9py3fckx00000gn/C/clang/ModuleCache/2NVTWR9HWT5FK/Foundation-3EJO22UA1F2B1.pcm
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.2.26159.112/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073: The command " [/Users/runner/work/website/website/src/Website/Website.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.2.26159.112/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         dsymutil  "/Users/runner/work/website/website/artifacts/bin/Website/release/native/Website" && [/Users/runner/work/website/website/src/Website/Website.csproj]
/Users/runner/.nuget/packages/microsoft.dotnet.ilcompiler/11.0.0-preview.2.26159.112/build/Microsoft.NETCore.Native.targets(415,5): error MSB3073:         strip -no_code_signature_warning -x "/Users/runner/work/website/website/artifacts/bin/Website/release/native/Website"" exited with code -1. [/Users/runner/work/website/website/src/Website/Website.csproj]
  11. martincostello
    changed the title [-][11.0-preview.1] Native AoT compilation fails on macOS due to missing .pcm files[/-] [+][11.0-preview.2] Native AoT compilation fails on macOS due to missing .pcm files[/+] on Mar 11, 2026

  12. MichalStrehovsky commented on Apr 9, 2026

    @MichalStrehovsky
    MichalStrehovsky
    on Apr 9, 2026
    Member

    I believe this is fixed. Not sure when but we no longer set StripSymbols to false after #124266 and things seem to work.

  13. MichalStrehovsky
    closed this as completedon Apr 9, 2026
  14. dotnet-policy-service
    removed
    untriagedNew issue has not been triaged by the area owner
    on Apr 9, 2026
  15. github-actions
    locked and limited conversation to collaborators on May 9, 2026
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