# Unable to precompile any packages

**URL:** <https://discourse.julialang.org/t/unable-to-precompile-any-packages/114311>\
**Category:** General Usage\
**Tags:** question\
**Created:** [May 15, 2024, 5:10pm UTC](https://discourse.julialang.org/t/unable-to-precompile-any-packages/114311 "2024-05-15T17:10:07Z")\
**Posts on this page:** 1\
**Showing post:** 19

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**Author:** ![Palli](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/palli/32/3380_2.png) [@Palli](https://discourse.julialang.org/u/Palli)\
**Post date:** [May 16, 2024, 7:52pm UTC](https://discourse.julialang.org/t/unable-to-precompile-any-packages/114311/19 "2024-05-16T19:52:53Z")

</div>

I had no idea about \_ZSt14\_\_once\_functor, only libLLVM-15jl.dll and looking it up it seems to be a known problem (and solution):

> [@C/C++ embedding on Windows](https://discourse.julialang.org/t/c-c-embedding-on-windows/17828/2):
>
> Problem is solved… I had C:\Program Files\LLVM\bin\ in my PATH which somehow seemed to conflict with Julia’s LLVM files.

What exactly you did, to cause this, I would like to know. And since it’s a known problem, maybe Julia could do something to mitigate it, more than just explaining the error code or showing it just in hex, rather point to the fix.

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