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[WIP] LLVM 20 llvmdev recipe #1226

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[WIP] LLVM 20 llvmdev recipe #1226

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@gmarkall gmarkall commented May 30, 2025 •
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Using this PR for development / notes.

Build / installation

I built for linux-64 with the GHA builder (https://github.com/numba/llvmlite/actions/runs/15325329108)

Installation requires:

  + liblzma-devel    5.8.1  hb9d3cd8_1          conda-forge                             442kB
  + xz-gpl-tools     5.8.1  hbcc6ac9_1          conda-forge                              34kB
  + xz-tools         5.8.1  hb9d3cd8_1          conda-forge                              96kB
  + libstdcxx-ng    15.1.0  h4852527_2          conda-forge                            Cached
  + zlib            1.2.13  h4ab18f5_6          conda-forge                            Cached
  + xz               5.8.1  hbcc6ac9_1          conda-forge                              24kB
  + zstd             1.5.6  ha6fb4c9_0          conda-forge                            Cached
  + llvmdev         20.1.5  hfc4b9b4_0          /home/gmarkall/numbadev/llvmdev-20      684MB

@gmarkall gmarkall mentioned this pull request May 30, 2025
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gmarkall commented Jun 3, 2025

Are the zlib and zstd dependencies a problem?

Yes, for wheels. Different recipe versions may be needed for wheels and conda packages.

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seibert commented Jun 3, 2025 •
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I think #1227 should fix the issue you saw when you ran the build with GitHub Actions. You might need to merge main into this branch to pick up the fix.

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gmarkall commented Jun 4, 2025 •
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Thanks, will give it a try!

@gmarkall gmarkall added this to the v0.45.0 milestone Jun 24, 2025
gmarkall added 2 commits July 4, 2025 15:35
@gmarkall
Use current compilers
0bca6bb 
- Remove `conda_build_config.yaml` that specified old compilers
- Don't build libunwind on Linux - it may no longer be necessary (it was
  added to ensure we had a compatible libunwind for the LLVM 14 build),
  and triggers a build issue due to a GCC bug, like:
  llvm/llvm-project#90332
@gmarkall
Merge remote-tracking branch 'numba/main' into llvmdev-20
2bbd641
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